Radar Outage Notification 11:41:41.4167999

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Message Date: Jan 31 2012 17:41:26KLOT DUAL POL RADAR IS BACK ONLINE. KCM

Radar Outage Notification 10:15:00.3653099

NOUS63 KLOT 311614
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Message Date: Jan 31 2012 16:14:44KLOT DUAL POL RADAR IS GOING OFFLINE FOR 2 HOURS FOR PM'S. KCM

Earthquake Report 22:36:17.8056323

AN EARTHQUAKE HAS BEEN FELT WEAKLY BY NUMEROUS PERSONS NEAR THE
ILLINOIS AND WISCONSIN STATE LINE IN NORTHEASTERN ILLINOIS. THE
EPICENTER OF THE EARTHQUAKE WAS 4 MILES NORTHEAST OF ANTIOCH
ILLINOIS AND HAD A PRELIMINARY MAGNITUDE OF 2.4 ON THE RICHTER
SCALE. NO DAMAGE HAS BEEN REPORTED.

INFORMATION RELEASED IN THIS STATEMENT IS PRELIMINARY. UPDATES
WILL BE PROVIDED AS MORE INFORMATION BECOMES AVAILABLE FROM THE
NATIONAL EARTHQUAKE INFORMATION CENTER IN GOLDEN COLORADO.

Special Weather Statement 05:08:06.1830114

...SECONDARY ROADWAYS MAY BE SLICK THIS MORNING...

SNOW HAS OR WILL END SHORTLY FOR ALL OF NORTHEASTERN ILLINOIS AND
NORTHWESTERN INDIANA. INCREASING WESTERLY WINDS AND CLEARING
SKIES WILL ALLOW TEMPERATURES TO QUICKLY FALL BELOW FREEZING THIS
MORNING. ROADWAYS THAT WERE WET FROM THE EARLIER SNOW AND MELT
OFF...RUN THE RISK OF FREEZING...AND MANY REPORTS OF VEHICLES IN
DITCHES HAVE BEEN NOTED THIS MORNING ON UNTREATED ROADWAYS AS WELL
AS OTHER SURFACES THAT MAY BE PRONE TO QUICK FREEZING...SUCH AS
BRIDGES AND OVERPASSES. TEMPERATURES WILL WARM BY EARLY
AFTERNOON...ENDING THE SLICK ROADWAY THREAT.

Flood Potential Outlook 10:18:24.3673296

...ADVANCED HYDROLOGIC PREDICTION SERVICE...AHPS...ENABLES
THE NATIONAL WEATHER SERVICE...NWS...TO PROVIDE LONG-RANGE
PROBABILISTIC RIVER OUTLOOKS...

THE VALUES IN THE TABLE BELOW ARE VALID 1/30/2012 TO 4/29/2012

IN THE TABLE BELOW...THE 90 THROUGH 10 PERCENT COLUMNS INDICATE
THE CHANCE THAT A LOCATION ON A RIVER COULD RISE ABOVE THE LISTED
STAGE LEVELS IN THE NEXT 90 DAYS.

FOR EXAMPLE: THE KANKAKEE RIVER AT DUNNS BRIDGE HAS A FLOOD STAGE OF
10 FEET. WITHIN THE NEXT 90 DAYS...THERE IS A 50 PERCENT CHANCE
THE RIVER WILL RISE ABOVE 9.3 FT.

LOCATION FS (FT) 90% 80% 70% 60% 50% 40% 30% 20% 10%
-------- ------- --- --- --- --- --- --- --- --- ---
KANKAKEE RIVER
DUNNS BRIDGE 10.0 8.1 8.5 8.7 9.0 9.3 9.7 10.2 10.7 11.4
KOUTS 11.0 9.2 9.6 9.8 10.1 10.4 10.8 11.4 11.9 12.6
SHELBY 9.0 9.2 9.5 9.9 10.4 10.7 11.3 11.5 12.6 13.5
MOMENCE 5.0 3.4 3.8 4.0 4.2 4.5 4.7 5.0 5.8 6.4
WILMINGTON 6.5 3.6 4.4 4.7 5.0 5.3 5.6 5.9 6.1 6.9

SUGAR CREEK
MILFORD 18.0 12.8 15.8 16.9 17.4 17.7 18.2 19.1 20.0 21.3

IROQUOIS RIVER
RENSSELAER 12.0 9.3 10.1 10.5 11.3 11.6 12.0 12.2 13.1 13.6
FORESMAN 18.0 13.6 14.8 15.7 16.3 16.6 17.1 17.7 18.2 19.1
IROQUOIS 18.0 14.2 16.3 17.4 18.3 19.1 20.2 21.0 21.6 22.2
CHEBANSE 16.0 9.4 10.7 11.2 12.0 12.5 13.7 14.6 15.0 17.1

DES PLAINES RIVER
RUSSELL 7.0 6.0 6.5 6.8 7.1 7.2 7.3 7.5 7.7 8.4
GURNEE 7.0 4.1 5.0 5.3 5.6 6.0 6.7 6.9 7.5 8.8
DES PLAINES 5.0 1.7 2.1 2.2 2.5 2.7 3.0 4.2 4.9 6.3
LINCOLNSHIRE 12.5 8.8 9.8 10.0 10.2 10.7 11.1 11.5 12.3 13.7
RIVERSIDE 7.0 4.8 5.3 5.8 6.1 6.3 6.5 7.3 7.6 8.4

FOX RIVER
ALGONQUIN TAILW 9.5 7.8 8.2 8.6 9.1 9.4 9.6 10.4 11.2 12.1
MONTGOMERY 13.0 12.4 12.7 12.8 12.9 13.0 13.2 13.5 13.7 14.1
DAYTON 12.0 8.8 9.9 10.4 10.6 10.9 11.7 12.2 12.7 14.5

EAST BR DU PAGE RIVER
BOLINGBROOK 19.5 17.8 18.5 18.7 18.9 19.1 19.5 19.7 20.1 20.6

DU PAGE RIVER
SHOREWOOD 6.5 4.4 4.6 4.8 5.0 5.1 5.3 5.6 6.0 6.5

MAZON RIVER
COAL CITY 12.0 5.2 5.7 6.2 7.0 7.7 8.8 9.7 10.0 10.7

VERMILION RIVER
PONTIAC 14.0 6.1 6.6 7.6 8.7 9.2 9.7 10.7 12.5 14.3
LEONORE 16.0 9.9 11.0 12.0 13.0 14.0 15.6 16.6 18.1 19.8

THORN CREEK
THORNTON 10.0 5.5 6.4 6.6 6.9 7.2 7.5 8.4 9.2 10.1

HART DITCH
DYER 12.0 4.1 4.5 4.8 5.1 5.4 5.7 6.0 6.4 7.1

LITTLE CALUMET RIVER
MUNSTER 12.0 9.5 10.0 10.2 10.6 10.9 11.2 11.6 12.2 13.0
SOUTH HOLLAND 16.5 10.2 11.3 11.4 11.7 11.9 12.2 12.8 13.6 14.1

ILLINOIS RIVER
MORRIS 16.0 9.2 10.8 12.4 13.3 14.4 15.3 16.8 17.7 19.9
OTTAWA 463.0

LA SALLE 20.0 16.7 18.8 20.2 22.0 22.9 23.4 24.4 25.4 28.3

KISHWAUKEE RIVER
BELVIDERE 9.0 4.3 5.0 6.1 6.4 6.8 7.4 7.7 8.9 9.2
PERRYVILLE 12.0 9.0 9.7 10.7 11.1 11.6 12.1 12.5 13.3 14.0

SOUTH BRANCH KISHWAUKEE RIVER
DE KALB 10.0 4.8 5.8 6.1 6.5 6.8 6.9 7.3 8.3 9.1

ROCK RIVER
ROCKTON 10.0 5.6 6.2 7.2 8.0 8.4 8.7 9.2 10.1 12.2
LATHAM PARK 10.0 5.9 6.3 7.2 7.9 8.2 8.5 8.9 9.5 11.6
ROCKFORD 9.0 3.2 3.3 3.4 3.6 3.7 3.8 3.9 4.1 5.4
BYRON 13.0 8.3 9.2 9.5 10.5 10.9 11.2 11.6 12.7 13.4

PECATONICA RIVER
SHIRLAND 12.0 8.2 8.5 9.4 10.5 10.9 11.2 12.0 12.7 13.6

...PROBABILITIES FOR MINOR...MODERATE AND MAJOR
FLOODING...AND DEPARTURES FROM NORMAL OF REACHING FLOOD STAGE...
VALID 1/30/2012 TO 4/29/2012

-----------FLOOD STAGE----------- DEPARTURE
LOCATION MINOR MODERATE MAJOR FROM NORMAL
STG PCT STG PCT STG PCT OF REACHING
FLOOD STAGE

PECATONICA RIVER
SHIRLAND IL 12.0 27% 15.0 --- 17.0 --- 14% LESS
ROCK RIVER
ROCKTON IL 10.0 19% 11.0 14% 14.0 1% NEAR NORMAL
LATHAM PARK IL 10.0 16% 11.0 11% 14.0 --- NEAR NORMAL
KISHWAUKEE RIVER
BELVIDERE IL 9.0 14% 11.0 3% 12.0 --- NEAR NORMAL
S BR KISHWAUKEE
DEKALB IL 10.0 1% 11.0 1% 12.5 --- NEAR NORMAL
KISHWAUKEE RIVER
PERRYVILLE IL 12.0 42% 18.0 --- 22.0 --- NEAR NORMAL
ROCK RIVER
BYRON IL 13.0 14% 16.0 1% 18.0 1% NEAR NORMAL
DIXON IL 16.0 6% 18.0 1% 20.0 1% NEAR NORMAL
KANKAKEE RIVER
DUNNS BRIDGE IN 10.0 31% 12.0 4% 13.0 --- NEAR NORMAL
KOUTS IN 11.0 32% 13.0 4% 14.0 1% NEAR NORMAL
SHELBY IN 9.0 93% 11.0 42% 12.5 19% 13% GREATER
MOMENCE IL 5.0 31% 6.5 6% 9.0 1% NEAR NORMAL
WILMINGTON IL 6.5 13% 8.0 3% 10.0 --- NEAR NORMAL
IROQUOIS RIVER
RENSSELAER IN 12.0 39% 14.0 3% 15.0 3% NEAR NORMAL
FORESMAN IN 18.0 24% 22.0 --- 24.0 --- 9% GREATER
IROQUOIS IL 18.0 62% 24.0 1% 25.0 1% 8% GREATER
CHEBANSE IL 16.0 13% 18.0 6% 20.0 1% NEAR NORMAL
SUGAR CREEK
MILFORD IL 18.0 45% 22.0 6% 26.0 3% NEAR NORMAL
DES PLAINES RIVER
RUSSELL IL 7.0 62% 9.0 4% 10.0 --- NEAR NORMAL
GURNEE IL 7.0 24% 9.0 6% 11.0 --- NEAR NORMAL
LINCOLNSHIRE IL 11.0 18% 14.0 3% 15.5 1% 1% GREATER
DES PLAINES IL 5.0 18% 8.0 1% 9.0 1% NEAR NORMAL
RIVERSIDE IL 7.0 34% 8.0 11% 9.0 4% NEAR NORMAL
E BR DUPAGE RIVER
BOLINGBROOK IL 19.5 39% 21.0 3% 23.0 --- NEAR NORMAL
DU PAGE RIVER
SHOREWOOD IL 6.5 8% 8.0 1% 10.0 --- NEAR NORMAL
MAZON RIVER
COAL CITY IL 12.0 4% 14.0 --- 17.0 --- NEAR NORMAL
FOX RIVER
ALGONQUIN FOOTBR 9.5 44% 10.5 26% 12.0 11% NEAR NORMAL
MONTGOMERY IL 13.0 54% 14.0 11% 15.0 --- NEAR NORMAL
DAYTON IL 12.0 32% 14.0 11% 24.0 --- NEAR NORMAL
VERMILION RIVER
PONTIAC IL 14.0 9% 15.0 6% 18.0 1% NEAR NORMAL
LEONORE IL 16.0 36% 21.0 4% 26.0 --- NEAR NORMAL
THORN CREEK
THORNTON IL 10.0 9% 15.0 --- 16.0 --- NEAR NORMAL
LITTLE CALUMET R
MUNSTER IN 12.0 23% 14.0 4% 17.0 4% NEAR NORMAL
SOUTH HOLLAND IL 16.5 --- 18.0 --- 20.0 --- NA
HART DITCH
DYER IN 12.0 1% 13.0 1% 14.0 1% NA
ILLINOIS RIVER
MORRIS IL 16.0 36% 18.0 16% 22.0 1% NEAR NORMAL
OTTAWA IL 463.0 26% 466.0 9% 469.0 --- NEAR NORMAL
LA SALLE IL 20.0 72% 27.0 9% 31.0 --- NEAR NORMAL

THE NATIONAL WEATHER SERVICE CHICAGO OFFICE IN ROMEOVILLE ISSUES LONG
RANGE AHPS OUTLOOKS FOR ALL RIVER FORECAST LOCATIONS. THIS PRODUCT IS
UPDATED MONTHLY AROUND MID-MONTH. THESE OUTLOOKS ARE ISSUED IN
ADDITION TO THE 5 DAY RIVER FORECASTS THAT ARE ISSUED WHEN RIVER
FORECAST LOCATIONS ARE IN FLOOD OR FORECAST TO RISE ABOVE FLOOD
STAGE.

THIS LONG-RANGE PROBABILISTIC OUTLOOK CONTAINS FORECAST VALUES THAT
ARE CALCULATED USING MULTIPLE SEASON SCENARIOS FROM 30 OR MORE YEARS
OF CLIMATOLOGICAL DATA INCLUDING CURRENT CONDITIONS OF THE RIVER...
SOIL MOISTURE...AND 30 TO 90 DAY LONG-RANGE OUTLOOKS OF TEMPERATURE
AND PRECIPITATION.

BY PROVIDING THE COMPLETE RANGE OF PROBABILISTIC NUMBERS...THE LEVEL
OF RISK ASSOCIATED WITH LONG-RANGE PLANNING DECISIONS CAN BE
DETERMINED. THESE PROBABILISTIC FORECASTS ARE PART OF THE NATIONAL
WEATHER SERVICE ADVANCED HYDROLOGIC PREDICTION SERVICE.

VISIT OUR WEB PAGE AT WEATHER.GOV/CHICAGO FOR MORE WEATHER AND RIVER
INFORMATION INCLUDING GRAPHS OF PROBABILISTIC RIVER OUTLOOKS.

Non-Precipitation Watch, Warning, Advisory 04:58:57.1775763

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CST THIS MORNING...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A DENSE FOG
ADVISORY...WHICH IS IN EFFECT UNTIL 10 AM CST THIS MORNING.

* TIMING...AREAS OF DENSE FOG HAVE DEVELOPED ACROSS MUCH OF NORTH
CENTRAL ILLINOIS THIS MORNING. EXPECT THIS DENSE FOG TO PERSIST
THROUGH MID MORNING BEFORE CONDITIONS BEGIN TO IMPROVE.

* VISIBILITY...AREAS OF DENSE FOG WILL REDUCE THE VISIBILITY UNDER
A QUARTER MILE AT TIMES THIS MORNING.

* IMPACTS...SUBFREEZING TEMPERATURES ACROSS THE AREA MAY ALLOW THE
FOG TO FREEZE ON CONTACT WITH THE GROUND. IN ADDITION...PATCHY
FREEZING DRIZZLE MAY ALSO OCCUR. AS A RESULT...AREA ROADS MAY
BECOME SLICK. LOW VISIBILITIES WITHIN THE FOG WILL ALSO MAKE
TRAVEL HAZARDOUS. MOTORISTS ARE URGED TO TAKE EXTRA TIME TO
REACH THEIR DESTINATIONS THIS MORNING...AND TO USE EXTRA CATION
AT UNCONTROLLED INTERSECTIONS AND AT RAIL ROAD CROSSINGS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A DENSE FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE
REDUCED TO LESS THAN ONE QUARTER MILE. IF DRIVING...SLOW DOWN...
USE YOUR HEADLIGHTS...AND LEAVE PLENTY OF DISTANCE AHEAD OF YOU.

&&

Test Message 11:00:24.3922776

THIS IS THE WEEKLY TEST OF THE WXWARN1 ALERT SYSTEM THIS IS ONLY A TEST

Radar Outage Notification 09:00:04.3207996

NOUS63 KLOT 241459
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Message Date: Jan 24 2012 14:59:55KLOT DUAL POL RADAR IS BACK ONLINE. KCM

Radar Outage Notification 08:34:04.3053556

NOUS63 KLOT 241432
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Message Date: Jan 24 2012 14:32:59KLOT DUAL POL RADAR WIL BE GOING OFF LINE FOR SUNCHECK. KCM

Radar Outage Notification 07:09:58.2554002

NOUS63 KLOT 241308
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MESSAGE DATE: JAN 24 2012 1307

TDR ORD WILL BE OTS FROM 1400 TO 2100Z.

Non-Precipitation Watch, Warning, Advisory 08:40:28.3091571

...DENSE FOG ADVISORY WILL EXPIRE AT 9 AM CST THIS MORNING...

THE DENSE FOG ADVISORY WILL EXPIRE AT 9 AM CST THIS MORNING.

AS WINDS FURTHER INCREASE AND DRIER AIR GRADUALLY WORKS INTO THE
REGION...FOG WILL CONTINUE TO GRADUALLY FADE. THUS THE DENSE FOG
ADVISORY WILL BE ALLOWED TO EXPIRE.

DURING THE ADVISORY EARLY THIS MORNING...MULTIPLE LOCATIONS
ACROSS NORTH CENTRAL ILLINOIS OBSERVED VISIBILITY AT OR BELOW ONE
QUARTER OF A MILE.

Special Weather Statement 04:57:46.1768734

...STRONG WEST TO SOUTHWEST WINDS EXPECTED TODAY...

A STRONG COLD FRONT WILL PUSH ACROSS THE AREA THIS MORNING. BEHIND
THIS FRONT...WINDS WILL BECOME WESTERLY AND INCREASE TO AROUND 25
MPH WITH GUSTS UP TO 40 MPH AT TIMES LATER THIS MORNING AND THIS
AFTERNOON. WINDS THIS STRONG WILL MAKE TRAVEL HAZARDOUS FOR HIGH
PROFILE VEHICLES...ESPECIALLY THOSE TRAVELING ALONG NORTH TO SOUTH
ORIENTED ROADWAYS. EXPECT THESE WINDS TO CONTINUE INTO THE EARLY
EVENING HOURS BEFORE THEY ABATE.

Non-Precipitation Watch, Warning, Advisory 03:16:01.1164339

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CST THIS MORNING...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A DENSE FOG
ADVISORY...WHICH IS IN EFFECT UNTIL 9 AM CST THIS MORNING.

* TIMING...AREAS OF DENSE FOG HAVE DEVELOPED ACROSS MUCH OF NORTH
CENTRAL AND NORTHEASTERN ILLINOIS THIS MORNING ALONG A WARM
FRONTAL BOUNDARY. EXPECT THIS DENSE FOG TO PERSIST THROUGH MID
MORNING BEFORE CONDITIONS IMPROVE.

* VISIBILITY...AREAS OF DENSE FOG WILL REDUCE THE VISIBILITY UNDER
A QUARTER MILE AT TIMES THIS MORNING.

* IMPACTS...THIS WILL MAKE TRAVEL HAZARDOUS. MOTORISTS ARE URGED
TO USE EXTRA CATION AT UNCONTROLLED INTERSECTIONS AND AT RAIL
ROAD CROSSINGS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A DENSE FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE
REDUCED TO LESS THAN ONE QUARTER MILE. IF DRIVING...SLOW DOWN...
USE YOUR HEADLIGHTS...AND LEAVE PLENTY OF DISTANCE AHEAD OF YOU.

&&

Mesoscale Discussion 20:26:03.7282737

AREAS AFFECTED...CNTRL/ERN IL AND WRN/CNTRL IND

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 230225Z - 230430Z

THUNDERSTORMS WILL INCREASE IN COVERAGE ACROSS CNTRL/ERN IL AND
WRN/CNTRL IND TONIGHT. MARGINAL SVR WEATHER THREAT WILL EXIST WITH
THIS ACTIVITY...ENVIRONMENTAL TRENDS WILL CONTINUE TO BE MONITORED
FOR A WW.

AT 02Z...A 996 MB SURFACE LOW WAS MOVING FROM ERN KS INTO WRN
MO...AND IS FORECAST TO TRACK NEWD INTO NRN IL DURING THE OVERNIGHT
HOURS. STRONG SLY LOW-LEVEL FLOW AHEAD OF THE CYCLONE WILL CONTINUE
TO AID IN THE NWD ADVECTION OF MOISTURE /AROUND 8-10 C AT 850 MB/
ABOVE A COOL STABLE SURFACE AIRMASS /TEMPERATURES RANGING FROM NEAR
40F OVER NRN IND TO AROUND 60F OVER SRN IL AND SRN IND/. AS STRONG
FORCING FOR ASCENT CONTINUES TO OVERSPREAD THE REGION THROUGH
06Z...HI-RES MODEL GUIDANCE SUGGESTS STORMS WILL EXPAND IN COVERAGE
NWD OUT OF SRN IL INTO PORTIONS OF CNTRL/ERN IL...AND THEN MOVE EWD
INTO WRN/CNTRL IND. IT IS QUESTIONABLE WHETHER ROBUST BOUNDARY LAYER
DESTABILIZATION WILL OCCUR OVER IL/IND...WHICH WOULD BE PROBLEMATIC
FOR AN APPRECIABLE SVR WEATHER RISK. HOWEVER...GIVEN THE
STRONG/DYNAMIC NATURE OF THE EJECTING CYCLONE...OBSERVATIONAL TRENDS
WILL BE MONITORED CLOSELY DURING THE NIGHT FOR SIGNS OF GREATER THAN
ANTICIPATED DESTABILIZATION.

..GARNER.. 01/23/2012

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...IWX...IND...PAH...LOT...ILX...LSX...

LAT...LON 40548549 39078586 38478717 38478912 39098966 40428917
41538734 40548549

Special Weather Statement 18:08:53.6467966

...SLICK ROADWAYS MAY CONTINUE THROUGH THE EARLY EVENING HOURS...

WARM AIR CONTINUES TO SURGE INTO THE REGION...WELL AHEAD OF AN
ADVANCING STORM SYSTEM ACROSS THE PLAINS. AIR TEMPERATURES WILL
CONTINUE TO WARM OVER THE NEXT FEW HOURS TO WELL ABOVE
FREEZING...BUT PAVEMENT TEMPERATURES HAVE BEEN SLOW TO RISE. THIS
WILL ALLOW UNTREATED ROADWAYS AND PARKING LOTS THAT ARE PRONE TO
ICING...TO CONTINUE TO BE HAZARDOUS TO TRAVELERS THROUGH THE EARLY
EVENING HOURS. USE CAUTION IF TRAVELING ACROSS FAR NORTHERN
ILLINOIS THIS EVENING...AND BE ALERT FOR POTENTIAL ICY SPOTS ON
UNTREATED OR LIGHTLY USED ROADS. ALSO...BE CAREFUL IF WALKING ON
UNTREATED SIDEWALKS AND PARKING LOTS.

Public Severe Weather Outlook 14:36:19.5205321

...WIDESPREAD SEVERE THUNDERSTORMS EXPECTED OVER PARTS OF THE LOWER
MISSISSIPPI...LOWER OHIO...AND TENNESSEE VALLEYS LATE THIS AFTERNOON
THROUGH EARLY MONDAY...

THE NWS STORM PREDICTION CENTER IN NORMAN OK IS FORECASTING THE
DEVELOPMENT OF TORNADOES...WIDESPREAD DAMAGING WINDS...AND HAIL OVER
PARTS OF THE LOWER MISSISSIPPI...LOWER OHIO...AND TENNESSEE VALLEYS
LATE THIS AFTERNOON THROUGH EARLY MONDAY.

THE AREAS MOST LIKELY TO EXPERIENCE THIS ACTIVITY INCLUDE

NORTHWEST ALABAMA
EASTERN ARKANSAS
SOUTHERN ILLINOIS
SOUTHERN INDIANA
WESTERN AND CENTRAL KENTUCKY
SOUTHEASTERN MISSOURI
NORTHERN AND CENTRAL MISSISSIPPI
WESTERN AND MIDDLE TENNESSEE

SURROUNDING THE GREATEST RISK AREA...SEVERE STORMS ARE ALSO POSSIBLE
FROM THE CENTRAL GULF COAST NORTH AND NORTHEAST INTO PARTS OF
MICHIGAN...OHIO...AND THE WESTERN SLOPES OF THE SOUTHERN AND CENTRAL
APPALACHIANS.

A POWERFUL JET STREAM DISTURBANCE OVER THE SOUTHERN PLAINS THIS
AFTERNOON WILL CONTINUE TO MOVE RAPIDLY EAST-NORTHEASTWARD TO THE
MISSISSIPPI AND OHIO VALLEYS TONIGHT AND EARLY MONDAY.

IN ASSOCIATION WITH THE JET STREAM IMPULSE...A STRONG SURFACE LOW
WILL TRACK EAST ACROSS EASTERN KANSAS THIS AFTERNOON...AND THEN
NORTHEAST ACROSS MISSOURI AND IOWA TONIGHT...BEFORE REACHING
WISCONSIN EARLY MONDAY. AHEAD OF THE LOW...A BROAD CURRENT OF FAST
SOUTHERLY WINDS WILL USHER UNSEASONABLY WARM AND MOIST AIR NORTHWARD
ACROSS THE LOWER MISSISSIPPI...LOWER OHIO AND TENNESSEE VALLEYS.

A COLD FRONT TRAILING SOUTH FROM THE LOW WILL SERVE AS A FOCUS FOR
INTENSE THUNDERSTORM DEVELOPMENT LATE THIS AFTERNOON THROUGH TONIGHT
OVER PARTS OF ILLINOIS...SOUTHEAST MISSOURI...ARKANSAS...AND
LOUISIANA AS THE FRONT ENCOUNTERS THE INCREASINGLY WARM AND HUMID
AIR.

AS THE STORMS BUILD AND INTERACT WITH THE JET STREAM WINDS...SOME OF
THEM LIKELY WILL BECOME LONG-LIVED SUPERCELLS...POSING A RISK FOR
STRONG TORNADOES IN ADDITION TO DAMAGING WIND AND HAIL. THE TORNADO
THREAT SHOULD BE GREATEST THIS EVENING AND EARLY TONIGHT OVER
EASTERN ARKANSAS...NORTHERN MISSISSIPPI...AND WESTERN TENNESSEE.
THE STORMS LIKELY WILL EVOLVE INTO AN EXTENSIVE LINE LATER
TONIGHT...EXTENDING THE RISK FOR DAMAGING WIND AND POSSIBLE
TORNADOES THROUGH DAWN MONDAY NORTHWARD AND EASTWARD TO THE WESTERN
SLOPES OF THE SOUTHERN AND CENTRAL APPALACHIANS.

STATE AND LOCAL EMERGENCY MANAGERS ARE MONITORING THIS DEVELOPING
SITUATION. THOSE IN THE THREATENED AREA ARE URGED TO REVIEW SEVERE
WEATHER SAFETY RULES AND TO LISTEN TO RADIO...TELEVISION...AND NOAA
WEATHER RADIO FOR POSSIBLE WATCHES...WARNINGS...AND STATEMENTS LATER
TODAY.

..GUYER/MEAD/CORFIDI.. 01/22/2012

Special Weather Statement 10:03:02.3582017

...PATCHY FREEZING DRIZZLE AND AREAS OF FOG DEVELOPING...

MOISTURE WILL CONTINUE TO INCREASE OVER EAST CENTRAL AND NORTHEAST
ILLINOIS...AS WELL AS NORTHWEST INDIANA...WITH CONDITIONS
BECOMING MORE FAVORABLE FOR PATCHY FREEZING DRIZZLE AND AREAS OF
FOG BY AFTERNOON. SOME OF THE FOG MAY BE DENSE IN
PLACES...INCLUDING ALONG THE LAKE MICHIGAN SHORE. WITH AIR AND
PAVEMENT TEMPERATURES BELOW FREEZING INTO EARLY
AFTERNOON...ISOLATED SLICK ROAD CONDITIONS ARE POSSIBLE. AIR
TEMPERATURES WILL SLOWLY MODERATE...LIKELY TOPPING FREEZING AREA
WIDE BY MID TO LATE AFTERNOON. PAVEMENT TEMPERATURES WILL LIKELY
NOT RISE AS QUICKLY...THUS ALLOWING FREEZING DRIZZLE AND FREEZING
FOG TO BE A THREAT THROUGH THE DAYLIGHT HOURS. IN
ADDITION...PATCHY BLOWING SNOW MAY BE SEEN IN OPEN AREAS AS
SOUTHERLY WINDS CONTINUE TO INCREASE INTO THE AFTERNOON...GUSTING
AT TIMES OVER 25 MPH. PREPARE FOR THE POTENTIAL FOR SLOWER TRAVEL
TIMES THROUGH THE REST OF TODAY.

Special Weather Statement 04:25:03.1574396

...SLICK SPOTS ON ROADS POSSIBLE EARLY THIS MORNING...

AREAS OF FOG AND PATCHY AREAS OF LIGHT FREEZING DRIZZLE ARE
EXPECTED THIS MORNING. THIS COULD CAUSE UNTREATED ROADWAYS AND
SIDEWALKS TO BECOME GLAZED WITH ICE...MAKING TRAVEL HAZARDOUS. IF
TRAVEL IS PLANED ACROSS THE REGION THIS MORNING USE EXTRA CAUTION
AS OVERPASSES AND UNTREATED SURFACES MAY BECOME SLICK. TEMPERATURES
ARE EXPECTED TO WARM THROUGH THE MORNING AS GUSTY SOUTHERLY WINDS
TRANSPORT A WARMER AIR MASS ACROSS THE REGION. AS TEMPERATURES
WARM ABOVE FREEZING BY EARLY THIS AFTERNOON CONDITIONS WILL IMPROVE.

Flood Potential Outlook 04:13:45.1507274

...PERIOD OF MODERATE TO HEAVY RAINFALL POSSIBLE ACROSS THE AREA
TONIGHT...

A STRONG STORM SYSTEM IS EXPECTED TO IMPACT THE AREA LATER TODAY
AND TONIGHT. MUCH WARMER AND UNSEASONABLY MOIST AIR IS EXPECTED TO
LIFT NORTHWARD ACROSS THE AREA THIS EVENING AHEAD OF THE SYSTEM.
THIS WILL LIKELY LEAD TO THE DEVELOPMENT OF RAIN WITH SOME
EMBEDDED THUNDERSTORMS LATER THIS EVENING AND OVERNIGHT. DUE TO
THE ABUNDANCE OF MOISTURE EXPECTED WITHIN THIS AIR MASS...SOME
MODERATE TO HEAVY RAINFALL WITH AMOUNTS AROUND AN INCH ARE
POSSIBLE. THIS RAINFALL...COMBINED WITH THE MELT WATER FROM THE
SNOW COVER...COULD RESULT IN SIGNIFICANT PONDING OF WATER IN
FLOOD PRONE AREAS...AS WELL AS THE FLOODING OF SMALL STREAMS.
THERE IS ALSO A POTENTIAL FOR SIGNIFICANT RISES AND ICE JAMS ON
AREA RIVERS WHICH COULD LEAD TO SOME RIVER FLOODING.

Public Severe Weather Outlook 03:59:48.1424412

...SEVERE THUNDERSTORMS EXPECTED OVER PARTS OF THE LOWER
MISSISSIPPI...LOWER OHIO...AND TENNESSEE VALLEYS LATE THIS AFTERNOON
THROUGH EARLY MONDAY...

THE NWS STORM PREDICTION CENTER IN NORMAN OK IS FORECASTING THE
DEVELOPMENT OF TORNADOES...WIDESPREAD DAMAGING WINDS...AND HAIL OVER
PARTS OF THE LOWER MISSISSIPPI...LOWER OHIO...AND TENNESSEE VALLEYS
LATE THIS AFTERNOON THROUGH EARLY MONDAY.

THE AREAS MOST LIKELY TO EXPERIENCE THIS ACTIVITY INCLUDE

NORTHERN AND CENTRAL ALABAMA
EASTERN AND SOUTHERN ARKANSAS
SOUTHERN ILLINOIS
SOUTHERN INDIANA
WESTERN AND CENTRAL KENTUCKY
SOUTHEASTERN MISSOURI
NORTHERN AND CENTRAL MISSISSIPPI
WESTERN AND MIDDLE TENNESSEE

SURROUNDING THE GREATEST RISK AREA...SEVERE STORMS ARE ALSO POSSIBLE
FROM THE CENTRAL GULF COAST NORTH AND NORTHEAST INTO PARTS OF
MICHIGAN...OHIO...AND THE WESTERN SLOPES OF THE SOUTHERN AND CENTRAL
APPALACHIANS.

A POWERFUL JET STREAM DISTURBANCE NOW OVER THE SOUTHERN ROCKIES WILL
MOVE RAPIDLY EASTWARD TODAY...REACHING THE EASTERN PORTIONS OF
KANSAS AND OKLAHOMA BY EVENING. THE SYSTEM WILL CONTINUE
EAST-NORTHEAST ACROSS THE MISSISSIPPI AND OHIO VALLEYS TONIGHT AND
EARLY MONDAY...FURTHER INTENSIFYING IN THE PROCESS.

IN ASSOCIATION WITH THE JET STREAM IMPULSE...A STRONG SURFACE LOW
WILL TRACK EAST ACROSS KANSAS TODAY...AND THEN NORTHEAST ACROSS
MISSOURI AND IOWA TONIGHT...BEFORE REACHING WISCONSIN EARLY MONDAY.
AHEAD OF THE LOW...A BROAD CURRENT OF FAST SOUTHERLY WINDS WILL
USHER UNSEASONABLY WARM AND MOIST AIR NORTHWARD ACROSS THE LOWER
MISSISSIPPI...LOWER OHIO AND TENNESSEE VALLEYS.

A COLD FRONT TRAILING SOUTH FROM THE LOW WILL SERVE AS A FOCUS FOR
INTENSE THUNDERSTORM DEVELOPMENT LATE THIS AFTERNOON THROUGH TONIGHT
OVER PARTS OF ILLINOIS...SOUTHEAST MISSOURI...ARKANSAS...AND
LOUISIANA AS THE FRONT ENCOUNTERS THE INCREASINGLY WARM AND HUMID
AIR.

AS THE STORMS BUILD AND INTERACT WITH THE JET STREAM WINDS...SOME OF
THEM LIKELY WILL BECOME LONG-LIVED SUPERCELLS...POSING A RISK FOR
STRONG TORNADOES IN ADDITION TO DAMAGING WIND AND HAIL. THE TORNADO
THREAT SHOULD BE GREATEST THIS EVENING AND EARLY TONIGHT OVER
EASTERN ARKANSAS...NORTHERN MISSISSIPPI...AND WESTERN TENNESSEE.
THE STORMS LIKELY WILL EVOLVE INTO AN EXTENSIVE LINE LATER
TONIGHT...EXTENDING THE RISK FOR DAMAGING WIND AND POSSIBLE
TORNADOES THROUGH DAWN MONDAY NORTHWARD AND EASTWARD TO THE WESTERN
SLOPES OF THE SOUTHERN AND CENTRAL APPALACHIANS.

STATE AND LOCAL EMERGENCY MANAGERS ARE MONITORING THIS DEVELOPING
SITUATION. THOSE IN THE THREATENED AREA ARE URGED TO REVIEW SEVERE
WEATHER SAFETY RULES AND TO LISTEN TO RADIO...TELEVISION...AND NOAA
WEATHER RADIO FOR POSSIBLE WATCHES...WARNINGS...AND STATEMENTS LATER
TODAY.

..CORFIDI.. 01/22/2012

Public Information Statement 11:17:04.4021775

...MORNING SNOWFALL ROUNDUP FOR ILLINOIS ONLY...

  THE FOLLOWING ARE SNOW AMOUNTS FOR THE PREVIOUS 24-HOURS.
  OBSERVATIONS ARE USUALLY TAKEN AT 7 AM.

  24-HOUR SNOWFALL AMOUNTS FOR SATURDAY(01/21/12)...


NORTHERN ILLINOIS                              SNOW
 LOCATION (COUNTY):                           FALL(INCHES)

 JOLIET LOCK/DAM (WILL)........................8.3
 PLAINFIELD 1SW (WILL).........................8.2
 DOWNERS GROVE 2SE (DU PAGE)...................8.0
 JOLIET 2N (WILL)..............................8.0
 PARK FOREST (COOK)............................8.0
 MONEE (WILL)..................................7.7
 CHICAGO RIDGE (COOK)..........................7.5
 BURR RIDGE 2SW (DU PAGE)......................7.5
 MANHATTAN 5ENE (WILL).........................7.4
 MANHATTAN (WILL)..............................7.4
 PARK FOREST 1NNE (COOK).......................7.3
 WESTMONT 1SSE (DU PAGE).......................7.3
 PEOTONE (WILL)................................7.3
 MIDWAY 3SW (COOK).............................7.3
 PEOTONE (WILL)................................7.3
 YORKVILLE 2SE (KENDALL).......................7.3
 AURORA (KANE).................................7.0
 WORTH (COOK)..................................7.0
 MARSEILLES 6WNW (LA SALLE)....................7.0
 PEOTONE (WILL)................................7.0
 NEW LENOX 2SE (WILL)..........................7.0
 LANSING (COOK)................................7.0
 PLAINFIELD (WILL).............................7.0
 COUNTRYSIDE 1ENE (COOK).......................6.9
 MONTGOMERY 1SSE (KENDALL).....................6.8
 BURNHAM-HEGEWISCH 2NNW (COOK).................6.7
 HOMER GLEN 1ENE (WILL)........................6.6
 ROMEOVILLE (WILL).............................6.6
 NAPERVILLE 3ESE (DU PAGE).....................6.5
 LISLE (DU PAGE)...............................6.5
 NAPERVILLE 1NW (DU PAGE)......................6.5
 LA GRANGE PARK 1SSW (COOK)....................6.4
 SUGAR GROVE 1NE (KANE)........................6.3
 OTTAWA 2N (LA SALLE)..........................6.1
 BARRINGTON (LAKE).............................6.0
 ELBURN (KANE).................................6.0
 CHICAGO 6ESE (COOK)...........................6.0
 OAK PARK 2S (COOK)............................6.0
 AURORA 4SE (DU PAGE)..........................6.0
 YORKVILLE 1NE (KENDALL).......................6.0
 GENEVA 2WSW (KANE)............................6.0
 GENEVA 1SSW (KANE)............................6.0
 SENECA 1NE (LA SALLE).........................6.0
 MENDOTA (LA SALLE)............................6.0
 PAW PAW (LEE).................................6.0
 LOMBARD 1NNW (DU PAGE)........................5.9
 OAK BROOK (DU PAGE)...........................5.9
 COAL CITY 4NNW (GRUNDY).......................5.8
 NEWARK (KENDALL)..............................5.8
 GENOA (DE KALB)...............................5.7
 INVERNESS 2S (COOK)...........................5.7
 NORTH AURORA 2NE (KANE).......................5.7
 HOFFMAN ESTATES 5W (COOK).....................5.6
 YORKVILLE 1W (KENDALL)........................5.6
 ELGIN (KANE)..................................5.5
 LINCOLNWOOD 2E (COOK).........................5.5
 RIVERWOODS (LAKE).............................5.5
 ROCKFORD 3NE (WINNEBAGO)......................5.5
 LAKE ZURICH (LAKE)............................5.5
 ST CHARLES 7NW (KANE).........................5.5
 SCHAUMBURG 3WSW (COOK)........................5.4
 SHERIDAN (LA SALLE)...........................5.4
 OHARE (COOK)..................................5.4
 WINFIELD (DU PAGE)............................5.4
 BOURBONNAIS (KANKAKEE)........................5.3
 BATAVIA 2WNW (KANE)...........................5.3
 ELGIN (KANE)..................................5.2
 ELMHURST (DU PAGE)............................5.2
 ELGIN 1S (KANE)...............................5.2
 BATAVIA (KANE)................................5.1
 ELK GROVE VILLAGE 1ESE (COOK).................5.1
 BUFFALO GROVE 2N (LAKE).......................5.1
 ROCKTON 1ESE (WINNEBAGO)......................5.1
 ROCKFORD (WINNEBAGO)..........................5.1
 STEWARD (LEE).................................5.1
 DE KALB (DE KALB).............................5.0
 LINCOLNSHIRE 1N (LAKE)........................5.0
 OTTAWA 1NW (LA SALLE).........................5.0
 OTTAWA (LA SALLE).............................5.0
 WAUCONDA (LAKE)...............................5.0
 SCHAUMBURG  2E (COOK).........................4.9
 BATAVIA 1WNW (KANE)...........................4.9
 DIXON 3NNW (LEE)..............................4.9
 ST. CHARLES 6NW (KANE)........................4.8
 HUNTLEY 4W (MCHENRY)..........................4.8
 MORRIS 1SW (GRUNDY)...........................4.7
 LA SALLE (LA SALLE)...........................4.7
 ASHTON (LEE)..................................4.6
 BULL VALLEY 2WNW (MCHENRY)....................4.6
 BYRON 3N (OGLE)...............................4.6
 ROSCOE 2ESE (WINNEBAGO).......................4.6
 ROSCOE 2SE (WINNEBAGO)........................4.6
 ELK GROVE VILLAGE 2WSW (COOK).................4.5
 WAUKEGAN 2N (LAKE)............................4.5
 MUNDELEIN (LAKE)..............................4.5
 ROCKFORD 4NW (WINNEBAGO)......................4.5
 COAL CITY (GRUNDY)............................4.4
 GENEVA 2ENE (KANE)............................4.4
 CORTLAND (DE KALB)............................4.3
 WOODSTOCK 5NW (MCHENRY).......................4.3
 ROCKFORD 1NW (WINNEBAGO)......................4.2
 DRESDEN LOCK/DAM (GRUNDY).....................4.0
 DWIGHT (LIVINGSTON)...........................4.0
 LAKE VILLA 1SSW (LAKE)........................4.0
 LAKEMOOR 2SE (LAKE)...........................4.0
 MARSEILLES (LA SALLE).........................4.0
 ROCHELLE (OGLE)...............................4.0
 ST ANNE (KANKAKEE)............................4.0
 WOODSTOCK (MCHENRY)...........................4.0
 BEACH PARK 1W (LAKE)..........................3.8
 EARLVILLE 3S (LA SALLE).......................3.7
 HERSCHER (KANKAKEE)...........................3.6
 HEBRON (MCHENRY)..............................3.5
 AMBOY (LEE)...................................3.5
 MENDOTA 1N (LA SALLE).........................3.5
 WATSEKA 5W (IROQUOIS).........................3.0
 SENECA 2SSW (LA SALLE)........................3.0
 SPRING GROVE 2N (MCHENRY).....................3.0
 SHABBONA (DE KALB)............................3.0
 PAXTON (FORD).................................2.0
 STREATOR (LIVINGSTON).........................2.0
 MILFORD (IROQUOIS)............................1.8
 CHATSWORTH (LIVINGSTON).......................1.0
 FAIRBURY (LIVINGSTON).........................1.0
 PAXTON (FORD).................................1.0
 CHATSWORTH (LIVINGSTON).......................1.0
 ORLAND HILLS 1S (COOK)......................TRACE

Winter Weather Watch, Warning, Advisory 20:56:57.7466283

...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS CANCELLED THE WINTER
STORM WARNING.

THE MAJORITY OF SNOWFALL HAS SHIFTED EAST. FLURRIES MAY PERSIST
OVER THE NEXT HOUR...BUT LITTLE TO NO FURTHER ACCUMULATION IS
EXPECTED.

Winter Storm Warning 20:14:55.7216605

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST
TONIGHT.

* TIMING...SNOW WILL CONTINUE INTO THE EARLY EVENING HOURS.

* ACCUMULATIONS...STORM TOTAL SNOWFALL OF 4 TO 7 INCHES CAN BE
EXPECTED.

* HAZARDS...SNOWFALL WILL CONTINUE TO TAPER OFF OVER THE NEXT FEW
HOURS...BUT LIGHT WINDS MAY CAUSE SOME BLOWING AND DRIFTING OF
THE FRESHLY FALLEN SNOW.

* IMPACTS...TRAVEL MAY REMAIN DIFFICULT UNTIL ROAD CREWS CAN CLEAR
ALL ROADWAYS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW
ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN
EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

&&

Winter Storm Warning 14:59:32.5343228

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST
TONIGHT.

* TIMING...SNOW WILL CONTINUE THROUGH TONIGHT. THE HEAVIEST
SNOWFALL WILL OCCUR THROUGH THE EARLY EVENING HOURS.

* ACCUMULATIONS...SNOWFALL TOTALS OF 4 TO 7 INCHES CAN BE
EXPECTED WITH LOCALLY HIGHER AMOUNTS POSSIBLE.

* HAZARDS...SNOW WILL FALL HEAVILY AT TIMES RESULTING IN REDUCED
VISIBILITIES AND SNOWFALL RATES OF AROUND ONE INCH PER HOUR AT
TIMES.

* IMPACTS...ACCUMULATING SNOW WILL CAUSE SIGNIFICANTLY INCREASED
TRAVEL TIMES...RESULTING IN A PARTICULARLY TREACHEROUS COMMUTE
THIS AFTERNOON. IN ADDITION...VERY COLD TEMPERATURES IN THE
TEENS WILL MAKE SALT LESS EFFECTIVE AND COMBINE WITH HEAVY
SNOWFALL RATES TO MAKE IT HARDER FOR ROAD CREWS TO KEEP ROADS
CLEAR OF SNOW AND ICE. THE SNOW WILL ALSO RESULT IN
SIGNIFICANT DISRUPTIONS TO AIR TRAVEL AS WELL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW
ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN
EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

&&

Winter Storm Warning 10:19:12.3678047

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST
TONIGHT.

* TIMING...SNOW WILL BEGIN TO FALL WITHIN THE NEXT HOUR OR TWO AND
CONTINUE THROUGH THIS AFTERNOON...ENDING TONIGHT. THE HEAVIEST
SNOWFALL WILL OCCUR DURING THE EARLY TO MID AFTERNOON HOURS.

* ACCUMULATIONS...SNOWFALL TOTALS OF 4 TO 7 INCHES CAN BE EXPECTED
WITH LOCALLY HIGHER AMOUNTS POSSIBLE.

* HAZARDS...SNOW WILL FALL HEAVILY AT TIMES RESULTING IN REDUCED
VISIBILITIES AND SNOWFALL RATES OF AROUND ONE INCH PER HOUR AT
TIMES.

* IMPACTS...ACCUMULATING SNOW WILL CAUSE SIGNIFICANTLY INCREASED
TRAVEL TIMES...RESULTING IN A PARTICULARLY TREACHEROUS COMMUTE
THIS AFTERNOON. IN ADDITION...VERY COLD TEMPERATURES IN THE
TEENS WILL MAKE SALT LESS EFFECTIVE AND COMBINE WITH HEAVY
SNOWFALL RATES TO MAKE IT HARDER FOR ROAD CREWS TO KEEP ROADS
CLEAR OF SNOW AND ICE. THE SNOW WILL ALSO RESULT IN
SIGNIFICANT DISRUPTIONS TO AIR TRAVEL AS WELL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW
ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN
EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

&&

Winter Storm Warning 03:52:51.1383129

...WINTER STORM WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING
TO MIDNIGHT CST TONIGHT...

A WINTER STORM WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING
TO MIDNIGHT CST TONIGHT.

* TIMING...SNOW WILL DEVELOP DURING THE MID TO LATE MORNING HOURS
AND CONTINUE THROUGH THIS AFTERNOON...ENDING TONIGHT. THE
HEAVIEST SNOWFALL WILL OCCUR THIS AFTERNOON.

* ACCUMULATIONS...SNOWFALL TOTALS OF 5 TO 8 INCHES CAN BE
EXPECTED.

* HAZARDS...SNOW WILL FALL HEAVILY AT TIMES RESULTING IN REDUCED
VISIBILITIES AND SNOWFALL RATES OF AROUND ONE INCH PER HOUR AT
TIMES.

* IMPACTS...ACCUMULATING SNOW WILL CAUSE SIGNIFICANTLY INCREASED
TRAVEL TIMES...RESULTING IN A PARTICULARLY TREACHEROUS COMMUTE
THIS AFTERNOON. IN ADDITION...VERY COLD TEMPERATURES IN THE
TEENS WILL MAKE SALT LESS EFFECTIVE AND COMBINE WITH HEAVY
SNOWFALL RATES TO MAKE IT HARDER FOR ROAD CREWS TO KEEP ROADS
CLEAR OF SNOW AND ICE. THE SNOW WILL ALSO RESULT IN SIGNIFICANT
DISRUPTIONS TO AIR TRAVEL AS WELL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW
ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN
EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

&&

Radar Scan Zone Alert

This is a severe weather alert from WXWARN1.

The alert occurred at 02:49 AM on Jan 20 2012.
The site being monitored is LOT in Chicago, IL.

The site is operating in VCP mode 31.

WXWARN1 triggered the alert because precipitation exceeded 50 dBZ (VIP level 10).
The maximum detected precipitation level is -30 dBZ (VIP level -6).

WXWARN1 precipitation sensitivity is set to 50.

The current radar product is Short Range Composite Reflectivity (NCR).

The text description for the maximum detected precipitation level is: "traces of snow or ice, or ground clutter".

Radar Scan Zone Alert

This is a severe weather alert from WXWARN1.

The alert occurred at 02:46 AM on Jan 20 2012.
The site being monitored is LOT in Chicago, IL.

The site is operating in VCP mode 31.

WXWARN1 triggered the alert because precipitation exceeded 50 dBZ (VIP level 10).
The maximum detected precipitation level is -30 dBZ (VIP level -6).

WXWARN1 precipitation sensitivity is set to 50.

The current radar product is Short Range Composite Reflectivity (NCR).

The text description for the maximum detected precipitation level is: "traces of snow or ice, or ground clutter".

Test Message 01:45:54.629045.7

THIS IS THE WEEKLY TEST OF THE WXWARN1 ALERT SYSTEM THIS IS ONLY A TEST

Winter Storm Warning 21:27:01.7644879

...WINTER STORM WARNING IN EFFECT FROM 9 AM FRIDAY TO MIDNIGHT
CST FRIDAY NIGHT...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A WINTER STORM
WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT FROM 9 AM FRIDAY TO
MIDNIGHT CST FRIDAY NIGHT. THE WINTER WEATHER ADVISORY IS NO
LONGER IN EFFECT.

* TIMING...SNOW WILL DEVELOP DURING THE MID TO LATE MORNING
HOURS FRIDAY AND CONTINUE THROUGH THE DAY ENDING FRIDAY NIGHT.
THE HEAVIEST SNOWFALL WILL OCCUR DURING THE AFTERNOON FRIDAY.

* ACCUMULATIONS...SNOWFALL TOTALS OF 5 TO 8 INCHES CAN BE EXPECTED.

* HAZARDS...SNOW COULD FALL RATHER HEAVILY AT TIMES RESULTING IN
REDUCED VISIBILITIES AND SNOWFALL RATES OF AROUND ONE INCH PER
HOUR AT TIMES.

* IMPACTS...ACCUMULATING SNOW WILL CAUSE SIGNIFICANTLY INCREASED
TRAVEL TIMES...RESULTING IN A PARTICULARLY TREACHEROUS AFTERNOON
COMMUTE FRIDAY. IN ADDITION...VERY COLD TEMPERATURES IN THE
TEENS WILL MAKE SALT LESS EFFECTIVE AND COMBINE WITH HEAVY
SNOWFALL RATES TO MAKE IT HARDER FOR ROAD CREWS TO KEEP ROADS
CLEAR OF SNOW AND ICE. THE SNOW WILL ALSO RESULT IN SIGNIFICANT
DISRUPTIONS TO AIR TRAVEL AS WELL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW
ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN
EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

&&

Winter Weather Watch, Warning, Advisory 14:41:24.5235515

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 AM FRIDAY TO MIDNIGHT
CST FRIDAY NIGHT...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 9 AM FRIDAY TO
MIDNIGHT CST FRIDAY NIGHT. THE WINTER STORM WATCH IS NO LONGER IN
EFFECT.

* TIMING...SNOW WILL DEVELOP DURING THE MID TO LATE MORNING HOURS
FRIDAY AND CONTINUE THROUGH THE DAY ENDING FRIDAY NIGHT. THE
HEAVIEST SNOWFALL WILL OCCUR DURING THE AFTERNOON FRIDAY.

* ACCUMULATIONS...SNOWFALL TOTALS OF 3 TO 6 INCHES CAN BE EXPECTED
WITH LOCALLY HEAVIER TOTALS POSSIBLE.

* HAZARDS...SNOW COULD FALL RATHER HEAVILY AT TIMES RESULTING IN
REDUCED VISIBILITIES AND SNOWFALL RATES OF A HALF INCH TO INCH
PER HOUR AT TIMES.

* IMPACTS...ACCUMULATING SNOW WILL CAUSE SIGNIFICANTLY INCREASED
TRAVEL TIMES...RESULTING IN A PARTICULARLY TREACHEROUS AFTERNOON
COMMUTE FRIDAY. IN ADDITION...VERY COLD TEMPERATURES IN THE
TEENS WILL MAKE SALT LESS EFFECTIVE MAKING IT HARDER FOR ROAD
CREWS TO KEEP ROADS CLEAR OF SNOW AND ICE. THE SNOW WILL ALSO
RESULT IN SIGNIFICANT DISRUPTIONS TO AIR TRAVEL AS WELL WITH
DELAYS AND CANCELLATIONS LIKELY AT O'HARE AND MIDWAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

Winter Storm Watch 10:09:08.3618252

...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY MORNING
THROUGH FRIDAY EVENING...

A WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY MORNING
THROUGH FRIDAY EVENING.

* TIMING...SNOW IS EXPECTED TO DEVELOP OVER NORTHWEST ILLINOIS
AROUND DAYBREAK FRIDAY AND QUICKLY SPREAD ACROSS NORTHERN
ILLINOIS...INCLUDING THE CHICAGO METRO AREA...BY LATE FRIDAY
MORNING. THE SNOW WILL CONTINUE THROUGH FRIDAY EVENING...
TAPERING OFF TO LIGHT SNOW OR FLURRIES BY EARLY SATURDAY
MORNING.

* ACCUMULATIONS...STORM TOTAL SNOW AMOUNTS IN EXCESS OF 6 INCHES
ARE POSSIBLE.

* HAZARDS...THE HEAVIEST SNOW IS LIKELY TO FALL FROM FRIDAY
AFTERNOON INTO EARLY FRIDAY EVENING...WHEN SNOWFALL RATES OF
UP TO ONE INCH PER HOUR ARE POSSIBLE. ROADS WILL BECOME SNOW
COVERED AND DIFFICULT TO MAINTAIN IF THESE SNOWFALL RATES
MATERIALIZE. TRAVEL ACROSS NORTHERN ILLINOIS WILL BECOME
DIFFICULT AND PERHAPS DANGEROUS.

* IMPACTS...ACCUMULATING SNOW WILL CAUSE SIGNIFICANTLY INCREASED
TRAVEL TIMES BY LATE FRIDAY MORNING THROUGH FRIDAY NIGHT. THE
HEAVIEST SNOW IS EXPECTED TO BE FALLING DURING THE FRIDAY
AFTERNOON AND FRIDAY EVENING RUSH HOUR COMMUTE. VERY COLD
TEMPERATURES IN THE TEENS MAY ALSO MAKE SALT LESS EFFECTIVE
MAKING IT HARDER FOR ROAD CREWS TO KEEP ROADS CLEAR OF SNOW AND
ICE. THE SNOW WILL RESULT IN SIGNIFICANT DELAYS AND
CANCELLATIONS AT CHICAGO AREA AIRPORTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

Winter Storm Watch 04:04:07.1450052

...WINTER STORM WATCH IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A WINTER STORM
WATCH...WHICH IS IN EFFECT FROM FRIDAY MORNING THROUGH FRIDAY
EVENING.

* TIMING...SNOW IS EXPECTED TO DEVELOP OVER NORTHWEST ILLINOIS
AROUND DAYBREAK FRIDAY AND QUICKLY SPREAD ACROSS NORTHERN
ILLINOIS...INCLUDING THE CHICAGO METRO AREA...BY LATE FRIDAY
MORNING. THE SNOW WILL CONTINUE THROUGH FRIDAY EVENING...
TAPERING OFF TO LIGHT SNOW OR FLURRIES BY EARLY SATURDAY
MORNING.

* ACCUMULATIONS...STORM TOTAL SNOW AMOUNTS IN EXCESS OF 6 INCHES
ARE POSSIBLE.

* HAZARDS...THE HEAVIEST SNOW IS LIKELY TO FALL FROM FRIDAY
AFTERNOON INTO EARLY FRIDAY EVENING...WHEN SNOWFALL RATES OF UP
TO ONE INCH PER HOUR ARE POSSIBLE. ROADS WILL BECOME SNOW
COVERED AND DIFFICULT TO MAINTAIN IF THESE SNOWFALL RATES
MATERIALIZE. TRAVEL ACROSS NORTHERN ILLINOIS WILL BECOME
DIFFICULT AND PERHAPS DANGEROUS.

* IMPACTS...ACCUMULATING SNOW WILL CAUSE SIGNIFICANTLY INCREASED
TRAVEL TIMES FRIDAY AND FRIDAY NIGHT. THE HEAVIEST SNOW IS
EXPECTED TO BE FALLING DURING THE FRIDAY AFTERNOON AND FRIDAY
EVENING RUSH HOUR COMMUTE. DELAYS AT CHICAGO AREA AIRPORTS ARE
ALSO POSSIBLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

Winter Storm Watch 03:23:48.1210572

...WINTER STORM WATCH IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A WINTER STORM
WATCH...WHICH IS IN EFFECT FROM FRIDAY MORNING THROUGH FRIDAY
EVENING.

* TIMING...SNOW IS EXPECTED TO DEVELOP OVER NORTHWEST ILLINOIS
AROUND DAYBREAK FRIDAY AND QUICKLY SPREAD ACROSS NORTHERN
ILLINOIS...INCLUDING THE CHICAGO METRO AREA...BY LATE FRIDAY
MORNING. THE SNOW WILL CONTINUE THROUGH FRIDAY EVENING...
TAPERING OFF TO LIGHT SNOW OR FLURRIES BY EARLY SATURDAY
MORNING.

* ACCUMULATIONS...STORM TOTAL SNOW AMOUNTS IN EXCESS OF 6 INCHES
ARE POSSIBLE.

* HAZARDS...THE HEAVIEST SNOW IS LIKELY TO FALL FROM FRIDAY
AFTERNOON INTO EARLY FRIDAY EVENING...WHEN SNOWFALL RATES OF UP
TO ONE INCH PER HOUR ARE POSSIBLE. ROADS WILL BECOME SNOW
COVERED AND DIFFICULT TO MAINTAIN IF THESE SNOWFALL RATES
MATERIALIZE. TRAVEL ACROSS NORTHERN ILLINOIS WILL BECOME
DIFFICULT AND PERHAPS DANGEROUS.

* IMPACTS...ACCUMULATING SNOW WILL CAUSE SIGNIFICANTLY INCREASED
TRAVEL TIMES FRIDAY AND FRIDAY NIGHT. THE HEAVIEST SNOW IS
EXPECTED TO BE FALLING DURING THE FRIDAY AFTERNOON AND FRIDAY
EVENING EVENING RUSH HOUR COMMUTE. DELAYS AT CHICAGO AREA
AIRPORTS ARE ALSO POSSIBLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

Special Weather Statement 21:57:39.7826840

...SNOW LIKELY THURSDAY MORNING AND AGAIN FRIDAY INTO FRIDAY
NIGHT...

A UPPER LEVEL DISTURBANCE WILL PRODUCE A PERIOD OF SNOW VERY LATE
TONIGHT INTO THURSDAY MORNING...ESPECIALLY SOUTH OF INTERSTATE 80.
WHILE SNOWFALL TOTALS ARE GENERALLY ONLY EXPECTED TO BE AN INCH OR
TWO...THE VERY COLD TEMPERATURES WILL RESULT IN ROADWAYS BECOMING
ICY AND POTENTIALLY BECOMING DIFFICULT TO TREAT AS TEMPERATURES
FALL INTO THE TEENS BY EARLY AFTERNOON.

ANOTHER STRONGER STORM SYSTEM WILL RESULT IN SNOW OVERSPREADING
MUCH OF THE AREA FRIDAY AND CONTINUING INTO FRIDAY NIGHT. THE MOST
RECENT NUMERICAL MODEL GUIDANCE CONTINUES TO INDICATE THAT SEVERAL
INCHES OF SNOW ACCUMULATION COULD OCCUR WITH THIS SYSTEM...
ESPECIALLY ACROSS AREAS NORTH OF INTERSTATE 80. IT IS IMPORTANT TO
NOTE HOWEVER THAT THIS WEATHER SYSTEM IS STILL OVER 1000 MILES
WEST OF CALIFORNIA AND ANY SLIGHT SHIFT IN THE FORECAST TRACK
COULD HAVE MAJOR IMPLICATIONS ON THE POTENTIAL FORECAST SNOWFALL
AMOUNTS. PERSONS WITH TRAVEL PLANS ACROSS THE AREA FRIDAY AND
FRIDAY NIGHT SHOULD MONITOR LATER FORECASTS ON THIS DEVELOPING
STORM SYSTEM.

Special Weather Statement 16:15:33.5794767

...SNOW LIKELY THURSDAY MORNING AND AGAIN FRIDAY INTO FRIDAY
NIGHT...

A UPPER LEVEL DISTURBANCE WILL PRODUCE A PERIOD OF SNOW VERY LATE
TONIGHT INTO THURSDAY MORNING...ESPECIALLY SOUTH OF INTERSTATE 80.
WHILE SNOWFALL TOTALS ARE GENERALLY ONLY EXPECTED TO BE AN INCH OR
TWO...THE VERY COLD TEMPERATURES WILL RESULT IN ROADWAYS BEING ICY
AND POTENTIALLY BECOMING DIFFICULT TO TREAT AS TEMPERATURES FALL
INTO THE TEENS BY EARLY AFTERNOON.

ANOTHER STRONGER STORM SYSTEM WILL RESULT IN SNOW OVERSPREADING
MUCH OF THE AREA FRIDAY AND CONTINUING INTO FRIDAY NIGHT. EARLY
INDICATIONS ARE THAT ACCUMULATIONS OF AT LEAST SEVERAL INCHES
COULD OCCUR WITH THIS SYSTEM...ESPECIALLY NORTH OF INTERSTATE 80.
THIS SYSTEM IS STILL WELL OVER 1000 MILES WEST OF CALIFORNIA AND
ANY SLIGHT SHIFT IN THE FORECAST TRACK COULD HAVE MAJOR IMPLICATIONS
ON THE POTENTIAL FORECAST SNOWFALL AMOUNTS. PERSONS WITH TRAVEL
PLANS ACROSS THE AREA FRIDAY AND FRIDAY NIGHT SHOULD MONITOR LATER
FORECASTS ON THIS DEVELOPING STORM SYSTEM.

Radar Outage Notification 15:50:11.5644089

NOUS63 KLOT 182148
FTMLOT
Message Date: Jan 18 2012 21:48:14KLOT DUAL POL RADAR IS BACK ONLINE. KCM _�?�{J

Test Message 11:00:48.3925151

THIS IS THE WEEKLY TEST OF THE WXWARN1 ALERT SYSTEM THIS IS ONLY A TEST

Radar Outage Notification 09:19:05.3320955

NOUS63 KLOT 181518
FTMLOT
Message Date: Jan 18 2012 15:18:45CORRECTION.... KLOT DUAL POL RADAR WILL BE DOWN SEVERAL HOURS FOR PM's MONTHLY AND QUARTERLY, YOU MIGHT SEE THE RADAR COME BACK UP AND GO BACK DOWN. THERE WILL BE A MESSAGE PUT OUT WHEN WE ARE DONE WORKING ON THE RADAR AND BROUGHT BACK ONLINE. KCM

Radar Outage Notification 08:44:52.3117708

NOUS63 KLOT 181444
FTMLOT
Message Date: Jan 18 2012 14:44:29KLOT DUAL POL RADAR WILL BE DOWN FOR A ABOUT 30 MINUTES.

Winter Weather Watch, Warning, Advisory 14:40:04.5227595

...WINTER WEATHER ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS CANCELLED THE WINTER
WEATHER ADVISORY.

ACCUMULATING SNOWFALL HAS ENDED ACROSS NORTHERN ILLINOIS THIS
AFTERNOON WITH ONLY LINGERING FLURRIES AND NON-ACCUMULATING LIGHT
SNOW POSSIBLE OVER THE NEXT FEW HOURS. WINDS WILL CONTINUE TO BE
BREEZY INTO THE EVENING AND MAY CAUSE BLOWING AND DRIFTING OVER
SOME AREAS BEFORE WINDS DIMINISH OVERNIGHT.

Radar Outage Notification 13:35:07.4841793

NOUS63 KLOT 171933
FTMLOT
Message Date: Jan 17 2012 19:33:08ELECTRONIC TECHNICIANS ARE CURRENTLY WORKING ON THE KLOT WSR-88D RADAR. THERE IS NO ESTIMATE ON WHEN THE RADAR WILL RETURN TO FULL SERVICE.

Winter Weather Watch, Warning, Advisory 11:28:02.4086918

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM CST THIS
EVENING...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM CST THIS
EVENING.

* TIMING...SNOW HAS OVERSPREAD THE AREA AND WILL CONTINUE THROUGH
MUCH OF THE AFTERNOON BEFORE ENDING THIS EVENING.

* ACCUMULATIONS...SNOWFALL TOTALS BETWEEN 2 AND 5 INCHES ARE
POSSIBLE.

* HAZARDS...IN ADDITION TO THE FALLING SNOW...WINDS OF 15 TO 25
MPH WITH GUSTS UP TO 35 MPH WILL CAUSE BLOWING AND DRIFTING
SNOW.

* IMPACTS...ACCUMULATING SNOW COULD RESULT IN HAZARDOUS TRAVEL
CONDITIONS FOR THE EVENING COMMUTE TODAY. VISIBILITIES COULD BE
REDUCED TO LESS THAN A MILE AT TIMES IN THE HEAVIER BANDS OF
SNOWFALL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW
AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

&&

Winter Weather Watch, Warning, Advisory 04:11:35.1494404

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 9 PM CST THIS
EVENING...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT
UNTIL 9 PM CST THIS EVENING.

* TIMING...SNOW WILL OVERSPREAD THE AREA EARLY THIS MORNING AND
CONTINUE THROUGH MUCH OF TODAY BEFORE ENDING LATER THIS
AFTERNOON AND EARLY THIS EVENING.

* ACCUMULATIONS...SNOWFALL TOTALS BETWEEN 3 AND 5 INCHES ARE
POSSIBLE.

* HAZARDS...IN ADDITION TO THE FALLING SNOW...WINDS WILL INCREASE
TO 15 TO 25 MPH WITH GUSTS UP TO 35 MPH BY LATE MORNING. THE
STRONG WINDS WILL CAUSE CONSIDERABLE BLOWING AND DRIFTING SNOW.

* IMPACTS...ACCUMULATING SNOW COULD BEGIN EARLY ENOUGH TO RESULT
IN HAZARDOUS TRAVEL CONDITIONS FOR THE MORNING COMMUTE
TODAY...WITH TRAVEL BECOMING MORE HAZARDOUS BY MID DAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW
AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

&&

Mesoscale Discussion 01:50:54.658745.1

AREAS AFFECTED...SW THRU E CNTRL MISSOURI...INTO CNTRL IL INTO NRN
AND CNTRL INDIANA

CONCERNING...TORNADO WATCH 1...

VALID 170750Z - 170915Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 1 CONTINUES.

SEVERE THREAT IS DIMINISHING ACROSS SOUTHWEST AND SOUTH CENTRAL
MISSOURI. TRENDS ARE BEING MONITORED FOR THE POSSIBILITY OF AN
ADDITIONAL WW EAST OF WW 0001.

VIGOROUS CONVECTIVE DEVELOPMENT APPEARS GENERALLY ASSOCIATED WITH
DEEP LAYER UPWARD VERTICAL MOTION...SUBSTANTIALLY FORCED BY A SHORT
WAVE IMPULSE/MID-LEVEL JET STREAK NOW TURNING EASTWARD ACROSS THE
CENTRAL PLAINS. THROUGH THE 09-12Z TIME FRAME...MODELS SUGGEST THAT
THIS STRONGER LIFT WILL RAPIDLY SHIFT EAST OF THE ST. LOUIS
AREA...ACROSS CENTRAL ILLINOIS...INTO NORTH CENTRAL INDIANA. EVEN
WITH A 40-60 KT WEST SOUTHWESTERLY 850 MB JET AIDING THE TRANSPORT
OF INCREASINGLY MOIST LOW-LEVEL AIR INTO THIS REGION...THE EVOLVING
MESOSCALE CONVECTIVE SYSTEM WILL PROBABLY BEGIN OUTRUNNING MORE
FAVORABLE WARM SECTOR NEAR SURFACE INSTABILITY. WHEN THIS
OCCURS...ACTIVITY SHOULD BECOME INCREASINGLY ELEVATED IN
NATURE...WITH A DIMINISHING SEVERE THREAT...ALTHOUGH MORE HIGHLY
LOCALIZED STRONG SURFACE GUSTS ASSOCIATED WITH THE DOWNWARD
TRANSPORT OF HIGHER MOMENTUM AIR MAY STILL NOT BE OUT OF THE
QUESTION. GIVEN THE CURRENT 50 KT STORM MOTION...AND UNCERTAIN
TIMING OF WEAKENING TRENDS...IT MAY BE THAT THE SEVERE THREAT
REMAINS HIGH ENOUGH TO REQUIRE AN ADDITIONAL WW ALONG THE INTERSTATE
70 CORRIDOR OF ILLINOIS AND INDIANA EARLY THIS MORNING.

..KERR.. 01/17/2012

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...ILN...LMK...IWX...IND...PAH...LOT...ILX...LSX...

LAT...LON 40168892 41098709 41028498 39768483 38228706 37559015
37979130 38948975 40168892

Special Weather Statement 21:00:57.7490042

...RAIN AND DRIZZLE TRANSITIONING TO SNOW TUESDAY MORNING WITH
MINOR ACCUMULATIONS LIKELY...

RAIN SHOWERS AND DRIZZLE WILL CONTINUE OVERNIGHT WITH TEMPERATURES
REMAINING SEVERAL DEGREES ABOVE FREEZING IN MOST PLACES. WHERE
TEMPERATURES MAY DROP TO OR JUST BELOW FREEZING WILL BE FAR NORTH
CENTRAL ILLINOIS...INCLUDING THE BELVIDERE...BYRON...DIXON...AND
ROCKFORD AREAS. FREEZING DRIZZLE OR EVEN LIGHT FREEZING RAIN IS
POSSIBLE THERE FROM 3 AM THROUGH THE BEGINNING OF THE MORNING
COMMUTE.

COOLER AIR MOVING INTO THE REGION TUESDAY MORNING WILL ALLOW
PRECIPITATION TO TRANSITION TO SNOW FROM WEST TO EAST. THE
LIKELIHOOD FOR SNOW ACROSS THE CHICAGO METROPOLITAN AREA WILL
INCREASE QUICKLY AFTER 9 AM. THERE WILL BE A PERIOD DURING THE
LATE MORNING AND INTO THE MID AFTERNOON WHERE BRIEF MODERATE SNOW
MAY OCCUR. SNOW SHOULD END BY OR JUST AFTER SUNSET. MINOR SNOW
ACCUMULATION BETWEEN ONE HALF AND TWO INCHES ARE LIKELY ACROSS
THE AREA...WITH THE HIGHER TOTALS FAVORED NEAR THE WISCONSIN STATE
LINE.

IN ADDITION...QUICKLY INCREASING NORTHWEST WINDS BY LATE TUESDAY
MORNING...GUSTING AT TIMES TO 35 MPH DURING THE AFTERNOON...WILL
CREATE AREAS OF BLOWING AND DRIFTING SNOW. THIS MAY LINGER INTO
THE EVENING. THESE WINDS WILL ALSO CAUSE TEMPERATURES TO
GRADUALLY FALL THROUGH THE 20S. THE COMBINATION OF THE
WINDS...FALLING TEMPERATURES...AND SNOWFALL WILL LIKELY PRESENT
SLOWER TRAVEL TIMES. ANYONE TRAVELING LATE TONIGHT THROUGH TUESDAY
AFTERNOON SHOULD BE PREPARED FOR THE POTENTIAL FOR ICY AND
POTENTIALLY SNOW COVERED ROADS AND REDUCED VISIBILITY.

Special Weather Statement 16:23:51.5844069

...LIQUID PRECIPITATION TRANSITIONS TO SNOW LATE TONIGHT AND
TUESDAY MORNING...SOME FREEZING RAIN POSSIBLE...

LOW PRESSURE WILL MOVE FROM MISSOURI ACROSS THE LOCAL AREA INTO
TUESDAY MORNING. CHANCES FOR LIGHT RAIN AND DRIZZLE WILL INCREASE
THROUGH THE EVENING ACROSS NORTHERN ILLINOIS AND NORTHWEST INDIANA
WITH AREAS OF FOG DEVELOPING. SOME OF THE FOG MAY BECOME DENSE IN
SPOTS. PRECIPITATION CHANCES WILL FURTHER INCREASE INTO THE
OVERNIGHT HOURS WITH THE MORE STEADY RAINFALL OCCURRING EAST OF A
GARY TO PONTIAC LINE.

A COOL FRONT WILL SETTLE INTO NORTH CENTRAL AND NORTHEAST
ILLINOIS THIS EVENING ALLOWING SLIGHTLY COOLER AIR TO BUILD INTO
THESE AREAS BEFORE A STRONGER PUSH OF MUCH COLDER AIR ARRIVES
EARLY TUESDAY. THERE IS A CHANCE THAT AREAS NORTHWEST OF A LINE
FROM NEAR LAKE FOREST IN LAKE COUNTY ILLINOIS TO NEAR MENDOTA IN
FAR NORTHERN LASALLE COUNTY...INCLUDING THE FAR NORTHERN AND
NORTHWESTERN CHICAGO SUBURBS...COULD SEE A PERIOD OF LIGHT
FREEZING RAIN OR FREEZING DRIZZLE AFTER MIDNIGHT BEFORE
TRANSITIONING TO ALL SNOW. AREAS TO THE SOUTHEAST WILL SEE RAIN
AND DRIZZLE TRANSITION TO SNOW FROM WEST TO EAST STARTING AROUND
DAYBREAK AND CONTINUE THROUGH LATE TUESDAY MORNING.

SNOW WILL THEN CONTINUE INTO TUESDAY AFTERNOON WITH TOTAL
ACCUMULATIONS OF UP TO 1 TO 2 INCHES POSSIBLE GENERALLY NORTH OF
INTERSTATE 80...WITH A CHANCE FOR SOME AREAS TO SEE 3 INCHES NEAR
THE WISCONSIN BORDER. AREAS ALONG AND SOUTH OF INTERSTATE 80 MAY
SEE UP TO AN INCH OF ACCUMULATION. STRONG NORTH TO NORTHWEST WINDS
WILL DEVELOP TUESDAY MORNING WITH GUSTS OF 30 TO 35 MPH AT TIMES.
THIS WILL CAUSE BLOWING SNOW AND MAY REDUCE VISIBILITIES TO A MILE
OR LESS WHERE HEAVIER SNOW FALLS. TEMPERATURES WILL PEAK IN THE
MORNING THEN FALL INTO THE LOW TO MID 20S THROUGH THE AFTERNOON.

ANYONE TRAVELING LATE TONIGHT THROUGH TUESDAY AFTERNOON SHOULD BE
PREPARED FOR THE POTENTIAL FOR ICY AND POTENTIALLY SNOW COVERED
ROADS AND REDUCED VISIBILITY. CONTINUE TO MONITOR UPDATED
FORECASTS AND STATEMENTS FOR ADDITIONAL INFORMATION.

Special Weather Statement 11:54:18.4242942

...WINTRY MIX AND SNOWFALL POSSIBLE LATE TONIGHT AND TUESDAY...

WITH MILD TEMPERATURES AND AN INCREASE IN MOISTURE OUT AHEAD OF
AN APPROACHING SURFACE LOW...LIGHT RAIN OR DRIZZLE...AND FOG WILL
DEVELOP ACROSS MUCH OF NORTHERN ILLINOIS AND NORTHWEST INDIANA
THIS EVENING. THIS SURFACE LOW WILL THEN MOVE EAST THROUGH THE
AREA OVERNIGHT TONIGHT WITH AN ASSOCIATED COLD FRONT USHERING IN
MUCH COLDER AIR...PROVIDING A TRANSITION TO A WINTRY MIX AND THEN
SNOW ON TUESDAY.

CURRENT INDICATIONS ARE THAT THIS LIGHT RAIN OR DRIZZLE MAY CHANGE
TO LIGHT FREEZING RAIN FOR FREEZING DRIZZLE FOR A SHORT TIME
TONIGHT AND VERY EARLY TUESDAY MORNING FOR AREAS NORTHWEST OF A
LINE FROM APPROXIMATELY LASALLE TO THE NORTHERN CHICAGO SUBURBS.
OTHERWISE A TRANSITION FROM RAIN TO ALL SNOW IS EXPECTED TO OCCUR
FROM NORTHWEST TO SOUTHEAST THROUGH MID MORNING TUESDAY FOR ALL
AREAS IN NORTHERN ILLINOIS AND NORTHWEST INDIANA. BEFORE THE SNOW
ENDS TUESDAY AFTERNOON...A FEW INCHES OF ACCUMULATION CAN BE
EXPECTED...ESPECIALLY NORTH OF INTERSTATE 80 WITH THE HIGHEST
AMOUNTS EXPECTED NEAR THE WISCONSIN BORDER. NORTHWEST WINDS WILL
INCREASE TUESDAY MORNING WITH GUSTS TO AROUND 30 MPH AT
TIMES...ESPECIALLY NEAR LAKE MICHIGAN...CAUSING BLOWING SNOW.

DETAILS REGARDING FREEZING RAIN POTENTIAL AND SNOWFALL AMOUNTS
WILL CONTINUE TO BE REFINED AND PERSONS PLANNING TRAVEL ACROSS THE
REGION LATE TONIGHT AND TUESDAY SHOULD CLOSELY MONITOR LATER
FORECASTS AND STATEMENTS.

Special Weather Statement 05:25:52.1935648

...WINTRY MIX AND SNOWFALL POSSIBLE LATE TONIGHT AND TUESDAY...

WITH RISING TEMPERATURES AND AN INCREASE IN MOISTURE OUT AHEAD OF
AN APPROACHING SURFACE LOW...LIGHT RAIN OR DRIZZLE...AND FOG WILL
DEVELOP ACROSS MUCH OF NORTHERN ILLINOIS AND NORTHWEST INDIANA
TODAY. THIS SURFACE LOW WILL THEN MOVE EAST THROUGH THE AREA
TONIGHT WITH AN ASSOCIATED COLD FRONT USHERING IN MUCH COLDER
AIR...PROVIDING A TRANSITION TO A WINTRY MIX AND THEN SNOW ON
TUESDAY.

CURRENT INDICATIONS ARE THAT THIS LIGHT RAIN WILL TRANSITION TO
LIGHT FREEZING RAIN LATE TONIGHT AND EARLY TUESDAY MORNING FOR
AREAS NORTHWEST OF A LINE FROM LA SALLE TO CHICAGO.
ALTHOUGH...THIS SHOULD BE A BRIEF WINDOW WITH NO ICE ACCUMULATION
EXPECTED. A TRANSITION TO ALL SNOW IS THEN EXPECTED TO OCCUR
THROUGH MID MORNING TUESDAY FOR ALL AREAS IN NORTHERN ILLINOIS AND
NORTHWEST INDIANA. BEFORE THE SNOW ENDS TUESDAY AFTERNOON...A FEW
INCHES OF SNOW CAN BE EXPECTED WITH LOCALLY HIGHER AMOUNTS
POSSIBLE.

DETAILS REGARDING FREEZING RAIN AND SNOWFALL POTENTIAL WILL LIKELY
NEED FURTHER REFINEMENTS AND PERSONS PLANNING TRAVEL ACROSS THE
REGION LATE TONIGHT AND TUESDAY SHOULD CLOSELY MONITOR LATER
FORECASTS AND STATEMENTS.

Special Weather Statement 21:42:04.7734276

...SLOW TRAVEL INTO OVERNIGHT...

TEMPERATURES WILL HOVER OVERNIGHT IN THE UPPER 20S TO POSSIBLY
RISING A DEGREE OR TWO DURING THE EARLY MORNING HOURS. WINDS
CONTINUE TO BE GUSTY FROM THE SOUTHEAST AT 20 TO 25 MPH. THIS HAS
RESULTED IN SOME MINOR BLOWING AND DRIFTING ON AREA ROADS...AND
CREATED SOME SLICK SPOTS. IF TRAVELING TONIGHT...MOTORISTS SHOULD
ALLOW EXTRA TIME IN REACHING THEIR DESTINATION DUE TO THE
POSSIBILITY OF SLICK ROADS ALONG WITH BRIDGES AND OVERPASSES.

Winter Weather Watch, Warning, Advisory 02:47:14.993365.1

...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS CANCELLED THE WINTER
STORM WARNING.

SNOWFALL HAS DECREASED IN INTENSITY EARLY THIS MORNING...AND
LITTLE TO NO ADDITIONAL ACCUMULATION IS EXPECTED. SOME BLOWING AND
DRIFTING SNOW WILL CONTINUE THIS MORNING AS WINDS REMAIN GUSTY
OUT OF THE NORTHWEST. HOWEVER...SIGNIFICANT RESTRICTIONS TO
VISIBILITIES ARE NO LONGER EXPECTED.

Winter Storm Warning 21:10:00.7543800

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 AM CST FRIDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 AM CST FRIDAY.

* TIMING...SNOW WILL CONTINUE INTO EARLY FRIDAY MORNING WITH THE
HEAVIEST OF SNOW FALLING THROUGH EARLY OVERNIGHT.

* ACCUMULATIONS...SNOWFALL TOTALS OF 4 TO 8 INCHES ARE LIKELY.
ISOLATED HIGHER AMOUNTS ARE POSSIBLE...ESPECIALLY NEAR LAKE
MICHIGAN. SNOWFALL ACCUMULATION RATES OF AROUND 1/2 TO 1 INCH
PER HOUR ARE POSSIBLE THROUGH THE EVENING.

* HAZARDS...IN ADDITION TO THE FALLING SNOW...WEST TO NORTHWEST
WINDS WILL CONTINUE AT 15 TO 25 MPH WITH GUSTS OF 30 TO 35 MPH
RESULTING IN BLOWING AND DRIFTING SNOW...ESPECIALLY IN OUTLYING
AND OPEN AREAS. WIND CHILLS ARE ALSO FORECAST TO DROP TO ZERO TO
10 BELOW BY FRIDAY MORNING.

* IMPACTS...ACCUMULATING SNOW AND REDUCED VISIBILITIES WILL LIKELY
MAKE TRAVEL TREACHEROUS TONIGHT INTO EARLY FRIDAY
MORNING...ESPECIALLY IN OPEN AREAS. HEAVIER SNOWFALL RATES AT
TIMES PRIOR TO MIDNIGHT MAY MAKE IT DIFFICULT FOR SNOW REMOVAL
OPERATIONS TO KEEP UP IN SOME AREAS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW
ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN
EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

&&

Winter Storm Warning 15:38:45.5576175

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 AM CST FRIDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 AM CST FRIDAY.

* TIMING...SNOW WILL CONTINUE INTO EARLY FRIDAY MORNING WITH THE
HEAVIEST OF SNOW FALLING THROUGH THE EVENING HOURS.

* ACCUMULATIONS...SNOWFALL TOTALS OF 4 TO 8 INCHES ARE LIKELY.
ISOLATED HIGHER AMOUNTS ARE POSSIBLE...ESPECIALLY NEAR LAKE
MICHIGAN. SNOWFALL ACCUMULATION RATES OF AROUND 1/2 TO 1 INCH
PER HOUR ARE POSSIBLE THROUGH THE EVENING.

* HAZARDS...IN ADDITION TO THE FALLING SNOW...WINDS WILL INCREASE
TO 15 TO 25 MPH WITH GUSTS UP TO 35 MPH EARLY THIS EVENING
RESULTING IN BLOWING AND DRIFTING SNOW...ESPECIALLY IN OUTLYING
AND OPEN AREAS. WIND CHILLS ARE ALSO FORECAST TO DROP TO ZERO TO
10 BELOW BY FRIDAY MORNING.

* IMPACTS...ACCUMULATING SNOW AND REDUCED VISIBILITIES WILL LIKELY
MAKE TRAVEL TREACHEROUS TONIGHT INTO EARLY FRIDAY
MORNING...ESPECIALLY IN OPEN AREAS. HEAVY SNOWFALL RATES MAY
MAKE IT DIFFICULT FOR SNOW REMOVAL OPERATIONS TO KEEP UP IN SOME
AREAS THROUGH THE EVENING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW
ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN
EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

&&

Winter Storm Warning 10:45:50.3836249

...WINTER STORM WARNING IN EFFECT UNTIL 9 AM CST FRIDAY...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A WINTER STORM
WARNING FOR MODERATE TO HEAVY SNOW AND BLOWING SNOW...WHICH IS IN
EFFECT UNTIL 9 AM CST FRIDAY. THE WINTER WEATHER ADVISORY IS NO
LONGER IN EFFECT FOR THESE AREAS.

* TIMING...SNOW WILL CONTINUE INTO EARLY FRIDAY MORNING WITH THE
HEAVIEST FALLING THIS AFTERNOON AND EARLY THIS EVENING.

* ACCUMULATIONS...SNOWFALL TOTALS OF 4 TO 8 INCHES ARE LIKELY
ACROSS THE AREA BY EARLY TONIGHT. ISOLATED HIGHER AMOUNTS ARE
POSSIBLE...ESPECIALLY NEAR LAKE MICHIGAN. SNOWFALL ACCUMULATION OF
AROUND 1 INCH PER HOUR IS POSSIBLE FROM MID AFTERNOON INTO EARLY
EVENING.

* HAZARDS...IN ADDITION TO THE FALLING SNOW...WINDS WILL INCREASE
TO 15 TO 25 MPH WITH GUSTS UP TO 35 MPH LATE THIS AFTERNOON RESULTING
IN BLOWING AND DRIFTING SNOW...ESPECIALLY IN OUTLYING AND OPEN
AREAS. WIND CHILLS ARE ALSO FORECAST TO DROP TO ZERO TO 10 BELOW
BY FRIDAY MORNING.

* IMPACTS...ACCUMULATING SNOW AND REDUCED VISIBILITIES WILL LIKELY
MAKE TRAVEL TREACHEROUS FOR THE AFTERNOON COMMUTE TODAY...WITH
TRAVEL CONDITIONS REMAINING DANGEROUS AND TREACHEROUS TONIGHT
INTO EARLY FRIDAY MORNING...ESPECIALLY IN OPEN AREAS. HEAVY
SNOWFALL RATES OF AROUND 1 INCH PER HOUR MAY MAKE IT DIFFICULT
FOR SNOW REMOVAL OPERATIONS TO KEEP UP IN SOME AREAS LATE THIS
AFTERNOON AND EARLY THIS EVENING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW
ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN
EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

&&

Winter Weather Watch, Warning, Advisory 03:32:25.1261755

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 9 AM CST /10 AM
EST/ THIS MORNING TO 9 AM CST /10 AM EST/ FRIDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 9 AM CST /10 AM
EST/ THIS MORNING TO 9 AM CST /10 AM EST/ FRIDAY.

* TIMING...SNOW WILL BEGIN BETWEEN 9 AM AND NOON AND CONTINUE
INTO FRIDAY MORNING.

* ACCUMULATIONS...SNOWFALL TOTALS OF 4 TO 8 INCHES ARE LIKELY WITH
LOCALLY HEAVIER TOTALS POSSIBLE.

* HAZARDS...IN ADDITION TO THE FALLING SNOW...WINDS WILL INCREASE
TO 15 TO 25 MPH WITH GUSTS UP TO 35 MPH BY AFTERNOON RESULTING
IN BLOWING AND DRIFTING SNOW...ESPECIALLY IN OUTLYING AND OPEN
AREAS. WIND CHILLS ARE ALSO FORECAST TO DROP TO ZERO TO 10 BELOW
BY FRIDAY MORNING.

* IMPACTS...ACCUMULATING SNOW AND REDUCED VISIBILITIES WILL LIKELY
MAKE TRAVEL DIFFICULT FOR THE AFTERNOON COMMUTE TODAY...WITH
TRAVEL CONDITIONS BECOMING TREACHEROUS AND EVEN DANGEROUS IN
OPEN AREAS TONIGHT INTO EARLY FRIDAY MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND
BLOWING SNOW. USE CAUTION WHEN TRAVELING... ESPECIALLY IN OPEN
AREAS.

&&

Winter Weather Watch, Warning, Advisory 14:06:15.5026724

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 AM THURSDAY TO 9 AM
CST FRIDAY...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND BLOWING SNOW AND BLOWING SNOW...WHICH
IS IN EFFECT FROM 9 AM THURSDAY TO 9 AM CST FRIDAY. THE WINTER
STORM WATCH IS NO LONGER IN EFFECT.

* TIMING...SNOW WILL DEVELOP BY MIDDAY THURSDAY AND CONTINUE
INTO FRIDAY MORNING.

* ACCUMULATIONS...SNOWFALL TOTALS OF 4 TO 8 INCHES ARE POSSIBLE.

* HAZARDS...IN ADDITION TO THE FALLING SNOW...WINDS WILL
INCREASE TO 15 TO 25 MPH WITH GUSTS UP TO 35 MPH BY THURSDAY
EVENING AND CONTINUE THROUGH THURSDAY NIGHT. THE STRONG WINDS
WILL CAUSE CONSIDERABLE BLOWING AND DRIFTING SNOW...ESPECIALLY
IN OUTLYING AND OPEN AREAS. WIND CHILLS ARE ALSO FORECAST TO
DROP TO NEAR ZERO.

* IMPACTS...ACCUMULATING SNOW WILL LIKELY MAKE TRAVEL DIFFICULT
FOR THE AFTERNOON COMMUTE THURSDAY...WITH TRAVEL CONDITIONS
POSSIBLY BECOMING TREACHEROUS AND EVEN DANGEROUS IN OPEN AREAS
THURSDAY NIGHT INTO EARLY FRIDAY MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND
BLOWING SNOW. USE CAUTION WHEN TRAVELING... ESPECIALLY IN OPEN
AREAS.

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

Test Message 11:00:44.3924756

THIS IS THE WEEKLY TEST OF THE WXWARN1 ALERT SYSTEM THIS IS ONLY A TEST

Winter Storm Watch 10:56:33.3899907

...WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY MORNING
THROUGH FRIDAY MORNING...

A WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY MORNING
THROUGH FRIDAY MORNING.

* TIMING...SNOW WILL DEVELOP BY MIDDAY THURSDAY AND CONTINUE
INTO FRIDAY MORNING.

* ACCUMULATIONS...SNOWFALL TOTALS IN EXCESS OF 6 INCHES ARE
POSSIBLE.

* HAZARDS...IN ADDITION TO THE FALLING SNOW...WINDS WILL
INCREASE TO 15 TO 25 MPH WITH GUSTS UP TO 35 MPH BY THURSDAY
EVENING AND CONTINUE THROUGH THURSDAY NIGHT. THE STRONG WINDS
WILL CAUSE CONSIDERABLE BLOWING AND DRIFTING SNOW...ESPECIALLY
IN OUTLYING AND OPEN AREAS. WIND CHILLS ARE ALSO FORECAST TO
DROP TO NEAR ZERO.

* IMPACTS...ACCUMULATING SNOW WILL LIKELY MAKE TRAVEL DIFFICULT
FOR THE AFTERNOON COMMUTE THURSDAY...WITH TRAVEL CONDITIONS
POSSIBLY BECOMING TREACHEROUS AND EVEN DANGEROUS IN OPEN AREAS
THURSDAY NIGHT INTO EARLY FRIDAY MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

Winter Storm Watch 03:13:21.1148499

...WINTER STORM WATCH IN EFFECT FROM THURSDAY MORNING THROUGH
FRIDAY MORNING...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A WINTER STORM
WATCH...WHICH IS IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY
MORNING.

* TIMING...SNOW WILL DEVELOP BY MIDDAY THURSDAY AND CONTINUE INTO
FRIDAY MORNING.

* ACCUMULATIONS...SNOWFALL TOTALS IN EXCESS OF 6 INCHES ARE
POSSIBLE.

* HAZARDS...IN ADDITION TO THE FALLING SNOW...WINDS WILL INCREASE
TO 15 TO 25 MPH WITH GUSTS UP TO 35 MPH BY THURSDAY EVENING AND
CONTINUE THROUGH THURSDAY NIGHT. THE STRONG WINDS WILL CAUSE
CONSIDERABLE BLOWING AND DRIFTING SNOW...ESPECIALLY IN OUTLYING
AND OPEN AREAS. WIND CHILLS ARE ALSO FORECAST TO DROP TO NEAR
ZERO.

* IMPACTS...ACCUMULATING SNOW WILL LIKELY MAKE TRAVEL DIFFICULT
FOR THE AFTERNOON COMMUTE THURSDAY...WITH TRAVEL CONDITIONS
POSSIBLY BECOMING TREACHEROUS AND EVEN DANGEROUS IN OPEN AREAS
THURSDAY NIGHT INTO EARLY FRIDAY MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

Special Weather Statement 21:13:26.7564193

...ACCUMULATING SNOWFALL EXPECTED ON THURSDAY AND THURSDAY NIGHT...

AFTER ONE MORE UNSEASONABLY MILD DAY ON WEDNESDAY...AN ARCTIC
FRONT WILL PUSH THROUGH THE REGION WEDNESDAY NIGHT AND BRING AN
ABRUPT END TO THE MILD AND DRY WEATHER.

PRECIPITATION MAY START AS EARLY AS OVERNIGHT WEDNESDAY ACROSS
NORTHWEST AND NORTH CENTRAL ILLINOIS. THIS PRECIPITATION WILL
EXPAND EAST NEAR OR SOON AFTER DAYBREAK...POSSIBLY BRIEFLY
STARTING AS A RAIN SNOW MIX BEFORE TRANSITIONING OVER TO ALL
SNOW.

BY THURSDAY MORNING...TEMPERATURES WILL BE FALLING THROUGH THE
20S...ALONG WITH INCREASING NORTHWEST WINDS. OCCASIONALLY
MODERATE TO HEAVY SNOW...IN TANDEM WITH THE GUSTY WINDS...MAY
REDUCE VISIBILITIES TO A HALF MILE OR LESS AT TIMES IN THE
MID TO LATE MORNING AND ESPECIALLY INTO THE AFTERNOON. THE AREA
OF SNOW WILL GRADUALLY SHIFT EAST THROUGH THURSDAY EVENING...WITH
THE THURSDAY EVENING COMMUTE LIKELY TO BE SIGNIFICANTLY IMPACTED.
CURRENT FORECAST SNOWFALL AMOUNTS ARE FOR A WIDESPREAD GREATER
THAN TWO INCH SNOWFALL...WITH THE HIGHEST AMOUNTS EXPECTED OVER
FAR NORTHEAST ILLINOIS...WHERE UP TO FIVE INCHES MAY ACCUMULATE.
SUCH SNOWFALL AMOUNTS WHEN COMBINED WITH THE WINDS AND FALLING
TEMPERATURES COULD RESULT IN SIGNIFICANT IMPACTS TO TRAVEL.

OVERNIGHT LOWS ON THURSDAY PLUMMETING TO BETWEEN 10 AND 15
DEGREES AND WESTERLY WINDS CONTINUING TO GUST TO 25 TO 30 MPH
WILL RESULT IN MINIMUM WIND CHILL VALUES OF ROUGHLY 0 TO 5 BELOW
ZERO.

FURTHER UPDATES AND REFINEMENTS TO THE FORECAST ARE LIKELY...SO
PERSONS PLANNING TRAVEL ACROSS THE REGION THURSDAY...INCLUDING
THROUGH AREA AIRPORTS...SHOULD CLOSELY MONITOR LATER FORECASTS
AND STATEMENTS.

Special Weather Statement 15:42:15.5596965

...ACCUMULATING SNOWFALL EXPECTED ON THURSDAY...

AFTER ANOTHER UNSEASONABLY MILD DAY ON WEDNESDAY...AN ARCTIC
FRONT WILL PUSH THROUGH THE REGION WEDNESDAY NIGHT AND BRING AN
ABRUPT END TO THE MILD AND DRY WEATHER.

PRECIPITATION WILL START WEDNESDAY NIGHT ACROSS NORTHWEST AND
NORTH CENTRAL ILLINOIS AND SPREAD EAST OVERNIGHT...POSSIBLY
STARTING AS A RAIN SNOW MIX BEFORE TRANSITIONING OVER TO ALL SNOW
AS TEMPERATURES FALL BELOW FREEZING.

BY THURSDAY MORNING...TEMPERATURES WILL BE FALLING THROUGH THE
20S...ALONG WITH INCREASING NORTHWEST WINDS. THE COMBINATION OF
FALLING SNOW AND WINDS GUSTING UP TO 30 MILES PER HOUR WILL
LIKELY LEAD TO A HAZARDOUS MORNING COMMUTE. OCCASIONALLY MODERATE
TO HEAVY SNOW...IN TANDEM WITH THE GUSTY WINDS...MAY REDUCE
VISIBILITIES TO A HALF MILE OR LESS AT TIMES. THE AREA OF SNOW
WILL GRADUALLY SHIFT EAST THROUGH THURSDAY EVENING...BUT THE
THURSDAY EVENING COMMUTE WILL LIKELY BE SIGNIFICANTLY IMPACTED AS
WELL. CURRENT FORECAST SNOWFALL AMOUNTS ARE FOR A WIDESPREAD
GREATER THAN 2 INCH SNOWFALL...WITH THE HIGHEST AMOUNTS EXPECTED
OVER FAR NORTHEAST ILLINOIS...WHERE UP TO 5 INCHES MAY ACCUMULATE.

OVERNIGHT LOWS PLUMMETING TO BETWEEN 10 AND 15 DEGREES ON THURSDAY
NIGHT AND WESTERLY WINDS CONTINUING TO GUST TO 25 TO 30 MPH WILL
RESULT IN MINIMUM WIND CHILL VALUES OF ROUGHLY 0 TO 5 BELOW ZERO.

FURTHER UPDATES AND REFINEMENTS TO THE FORECAST ARE LIKELY...SO
PERSONS PLANNING TRAVEL ACROSS THE REGION THURSDAY SHOULD CLOSELY
MONITOR LATER FORECASTS AND STATEMENTS.

Radar Outage Notification 11:39:01.4152158

NOUS63 KLOT 101738
FTMLOT
Message Date: Jan 10 2012 17:38:47WSR-88D RADAR WILL BE DOWN FOR MAINTENANCE. DETECTED

Special Weather Statement 07:18:27.2604392

...ACCUMULATING SNOWFALL EXPECTED THURSDAY...

AN ARCTIC COLD FRONT WILL SWEEP ACROSS THE REGION WEDNESDAY NIGHT
BRINGING AN END TO THE UNSEASONABLY MILD WEATHER ALONG WITH THE
POTENTIAL FOR THE FIRST SIGNIFICANT SNOW OF THE SEASON.

CURRENT INDICATIONS ARE THAT SNOW COULD DEVELOP AS EARLY AS LATE
WEDNESDAY NIGHT...PARTICULARLY OVER NORTH CENTRAL ILLINOIS...WITH
AN INCREASING THREAT FOR SNOW THURSDAY OVERSPREADING THE REMAINDER
OF NORTHERN AND CENTRAL ILLINOIS AND NORTHWEST INDIANA. SNOW MAY
FALL RATHER FORMIDABLY AT TIMES THURSDAY INTO THURSDAY EVENING WITH
TOTAL ACCUMULATIONS OF SEVERAL INCHES NOT OUT OF THE QUESTION.

IN ADDITION...TEMPERATURES ARE EXPECTED TO FALL THROUGH THE 20S
THURSDAY INTO THE TEENS THURSDAY NIGHT...AND MAY NOT CLIMB MUCH
ABOVE 20 DEGREES ON FRIDAY.

THIS STORM SYSTEM IS JUST NOW MOVING OFF THE PACIFIC INTO WESTERN
CANADA AND IS STILL IN THE DEVELOPING STAGES. DETAILS REGARDING
SNOWFALL POTENTIAL WILL LIKELY NEED FURTHER REFINEMENTS AND
PERSONS PLANNING TRAVEL ACROSS THE REGION THURSDAY SHOULD CLOSELY
MONITOR LATER FORECASTS AND STATEMENTS.

Special Weather Statement 03:03:38.1090782

...ACCUMULATING SNOWFALL EXPECTED THURSDAY...

AN ARCTIC COLD FRONT WILL SWEEP ACROSS THE REGION WEDNESDAY NIGHT
BRINGING AN END TO THE UNSEASONABLY MILD WEATHER ALONG WITH THE
POTENTIAL FOR THE FIRST SIGNIFICANT SNOW OF THE SEASON.

CURRENT INDICATIONS ARE THAT SNOW COULD DEVELOP AS EARLY AS LATE
WEDNESDAY NIGHT...PARTICULARLY OVER NORTH CENTRAL ILLINOIS...WITH
AN INCREASING THREAT FOR SNOW THURSDAY OVERSPREADING THE REMAINDER
OF NORTHERN AND CENTRAL ILLINOIS AND NORTHWEST INDIANA. SNOW MAY
FALL RATHER FORMIDABLY AT TIMES THURSDAY INTO THURSDAY EVENING WITH
TOTAL ACCUMULATIONS OF SEVERAL INCHES NOT OUT OF THE QUESTION.

IN ADDITION...TEMPERATURES ARE EXPECTED TO FALL THROUGH THE 20S
THURSDAY INTO THE TEENS THURSDAY NIGHT...AND MAY NOT CLIMB MUCH
ABOVE 20 DEGREES ON FRIDAY.

THIS STORM SYSTEM IS JUST NOW MOVING OFF THE PACIFIC INTO WESTERN
CANADA AND IS STILL IN THE DEVELOPING STAGES. DETAILS REGARDING
SNOWFALL POTENTIAL WILL LIKELY NEED FURTHER REFINEMENTS AND
PERSONS PLANNING TRAVEL ACROSS THE REGION THURSDAY SHOULD CLOSELY
MONITOR LATER FORECASTS AND STATEMENTS.

Test Message 11:00:55.3925845

THIS IS THE WEEKLY TEST OF THE WXWARN1 ALERT SYSTEM THIS IS ONLY A TEST

Radar Outage Notification 10:21:55.3694185

NOUS63 KLOT 031621
FTMLOT
Message Date: Jan 03 2012 16:21:42KLOT Dual Pol is back online.

Radar Outage Notification 09:02:50.3224429

NOUS63 KLOT 031502
FTMLOT
Message Date: Jan 03 2012 15:02:07Klot Dual Pol radar is going offline for about 30min. I will be doing a suncheck today.

Non-Precipitation Watch, Warning, Advisory 18:26:13.6570927

...WIND ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS CANCELLED THE WIND
ADVISORY.

Non-Precipitation Watch, Warning, Advisory 11:36:24.4136616

...WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST /1 AM EST/
TONIGHT...

A WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST /1 AM EST/
TONIGHT.

* TIMING...STRONG WINDS WILL CONTINUE THROUGH TONIGHT.

* WINDS...WEST WINDS AVERAGING AROUND 35 MPH WILL BE GUSTING UP TO
45 MPH. A FEW GUSTS AROUND 55 MPH ARE POSSIBLE.

* IMPACTS...SMALLER TREE LIMBS AND POWER LINES MAY BE BLOWN DOWN.
LIGHT WEIGHT OR UNSECURED OBJECTS CAN BE BLOWN AWAY. DRIVING
WILL BE DIFFICULT ESPECIALLY NORTH SOUTH ORIENTED ROADS. HIGH
PROFILE VEHICLES LIKE FULL SIZE VANS...BUSES AND SEMI
TRAILERS...ESPECIALLY IF EMPTY OR CARRYING A LIGHT LOAD... CAN
BE PRONE TO BEING TIPPED BY THE HIGHER WIND GUSTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT SUSTAINED WINDS OF 30 TO 39 MPH...OR
GUSTS BETWEEN 45 AND 57 MPH...ARE LIKELY. WINDS THIS STRONG CAN
CAUSE MINOR PROPERTY DAMAGE UNLESS PRECAUTIONS ARE TAKEN. DRIVING
MAY BE DIFFICULT...ESPECIALLY IN HIGH PROFILE VEHICLES. MOTORISTS
SHOULD BE ALERT AND USE CAUTION.

&&

Special Weather Statement 06:09:03.2192157

...BLAST OF WINTER WEATHER TO START THE NEW YEAR...

A STRONG COLD FRONT WAS SWEEPING THROUGH NORTHERN ILLINOIS THIS
MORNING. WINDS WILL TURN WEST-NORTHWEST AND RAPIDLY INCREASE BY
MID MORNING. SUSTAINED WINDS WILL BE AROUND 30 MPH WITH FREQUENT
GUSTS OF 40 TO 45 MPH TODAY. A FEW GUSTS TO 50 MPH ARE POSSIBLE.

AN AREA OF RAIN WILL MOVE THROUGH THE AREA...ENDING BY MID
MORNING. RAIN MAY MIX WITH OR CHANGE TO SNOW BRIEFLY BUT LITTLE OR
NO ACCUMULATION IS EXPECTED. SNOW FLURRIES ARE LIKELY LATER THIS
AFTERNOON AND TONIGHT.

TEMPERATURES WERE IN THE UPPER 30S TO MID 40S AT DAYBREAK BUT WILL
BE FALLING THROUGH THE DAY...DROPPING INTO THE MID 20S TO LOWER
30S BY LATE THIS AFTERNOON.

Non-Precipitation Watch, Warning, Advisory 04:27:31.1589048

...WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST /1 AM EST/
TONIGHT...

A WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST /1 AM EST/
TONIGHT.

* TIMING...WINDS WILL INCREASE EARLY THIS MORNING AND CONTINUE
INTO SUNDAY NIGHT.

* WINDS...WEST WINDS AVERAGING AROUND 35 MPH WILL BE GUSTING UP TO
45 MPH MPH. A FEW GUSTS AROUND 50 MPH ARE EXPECTED.

* IMPACTS...SMALLER TREE LIMBS AND POWER LINES MAY BE BLOWN DOWN.
LIGHT WEIGHT OR UNSECURED OBJECTS CAN BE BLOWN AWAY. DRIVING
WILL BECOME DIFFICULT ESPECIALLY NORTH SOUTH ORIENTED ROADS.
HIGH PROFILE VEHICLES LIKE FULL SIZE VANS...BUSES AND SEMI
TRAILERS...ESPECIALLY IF EMPTY OR CARRYING A LIGHT LOAD...CAN BE
PRONE TO BEING TIPPED BY THE HIGHER WIND GUSTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT SUSTAINED WINDS OF 30 TO 39 MPH...OR
GUSTS BETWEEN 45 AND 57 MPH...ARE LIKELY. WINDS THIS STRONG CAN
CAUSE MINOR PROPERTY DAMAGE UNLESS PRECAUTIONS ARE TAKEN. DRIVING
MAY BE DIFFICULT...ESPECIALLY IN HIGH PROFILE VEHICLES. MOTORISTS
SHOULD BE ALERT AND USE CAUTION.

&&