Monday, December 12, 2016

Hazardous Weather Outlook for Mchenry Co., IL

FLUS43 KLOT 122207
HWOLOT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
407 PM CST MON DEC 12 2016


WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-OGLE-LEE-DE KALB-KANE-
DUPAGE-COOK-LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-
IROQUOIS-FORD-LAKE INDIANA-PORTER-NEWTON-JASPER-BENTON-
407 PM CST MON DEC 12 2016 /507 PM EST MON DEC 12 2016/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.

.DAY ONE...TONIGHT.

WEATHER HAZARDS EXPECTED:

LIMITED EXCESSIVE COLD RISK.
ELEVATED SNOW RISK.

DISCUSSION:

LIGHT SNOW IS EXPECTED TO SPREAD INTO NORTH CENTRAL ILLINOIS LATE
THIS EVENING...AND INTO NORTHEAST ILLINOIS AND NORTHWEST INDIANA
SHORTLY AFTER MIDNIGHT. SNOWFALL AMOUNTS ARE EXPECTED TO BE UP TO
AN INCH NORTH OF THE INTERSTATE 88 CORRIDOR ACROSS NORTHERN ILLINOIS
WITH LITTLE OR NO ACCUMULATION AS FAR SOUTH AS INTERSTATE 80. SNOW
SHOULD END BY SUNRISE IN MOST AREAS...OR VERY SHORTLY AFTERWARD IN
PARTS OF NORTHWEST INDIANA.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

TUESDAY...
ELEVATED EXCESSIVE COLD RISK.
WEDNESDAY AND THURSDAY...
SIGNIFICANT EXCESSIVE COLD RISK.
FRIDAY...
LIMITED EXCESSIVE COLD RISK.
LIMITED ICE ACCUMULATION RISK.
SATURDAY...
ELEVATED EXCESSIVE COLD RISK.
ELEVATED SNOW RISK.
LIMITED ICE ACCUMULATION RISK.
SUNDAY...
SIGNIFICANT EXCESSIVE COLD RISK.

DISCUSSION:

ARCTIC COLD WILL SPREAD ACROSS THE MIDWEST THROUGH THE MIDDLE OF
THE WEEK...WITH THE COLDEST AIR OVER THE REGION FROM LATE WEDNESDAY
THROUGH FRIDAY MORNING. BLUSTERY WEST WINDS WILL ACCOMPANY THE COLD
AND WILL PRODUCE DANGEROUS SUB-ZERO WIND CHILLS. THURSDAY NIGHT AND
THURSDAY MORNING WILL LIKELY SEE THE COLDEST WIND CHILLS TO AROUND
20 BELOW ZERO ACROSS PORTIONS OF THE OUTLOOK AREA.

A STORM COULD PRODUCE A SIGNIFICANT AMOUNT OF PRECIPITATION FROM
FRIDAY THROUGH THE DAY SATURDAY. DEPENDING UPON THE TRACK OF THIS
STORM...THE POTENTIAL APPEARS TO EXIST FOR ACCUMULATING SNOW...IN
ADDITION TO A SWATH OF MIXED SNOW...SLEET OR FREEZING RAIN.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.

&&

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