Friday, September 5, 2014

Hazardous Weather Outlook for Mchenry Co., IL

FLUS43 KLOT 050913
HWOLOT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
413 AM CDT FRI SEP 5 2014


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-
413 AM CDT FRI SEP 5 2014 /513 AM EDT FRI SEP 5 2014/

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

.DAY ONE...TODAY AND TONIGHT.

WEATHER HAZARDS EXPECTED:

SCATTERED THUNDERSTORMS...SOME OF WHICH MAY PRODUCE:
HAIL LARGER THAN HALF DOLLAR SIZE.
HEAVY RAINFALL AND LOCALIZED FLOODING.
WIND GUSTS IN EXCESS OF 45 MPH.

AREAS AFFECTED AND TIMING:

A FEW THUNDERSTORMS ARE POSSIBLE THIS MORNING. THE GREATER
CHANCE FOR STORMS IN MUCH OF THE REGION WILL BE THIS AFTERNOON.
SOME THUNDERSTORMS MAY BECOME SEVERE IN THE AREA ALONG AND EAST
OF INTERSTATE 55. THERE WILL REMAIN A CHANCE OF THUNDERSTORMS
TONIGHT SOUTH OF INTERSTATE 80.

DISCUSSION:

A COLD FRONT WILL SLOWLY MOVE SOUTH ACROSS THE AREA THROUGH
TODAY. VERY MOIST AND UNSTABLE AIR AHEAD OF THE FRONT WILL
SUPPORT SCATTERED STORMS DEVELOPING DURING THE EARLY TO MID
AFTERNOON. THESE STORMS WILL SLOWLY MOVE EAST. THIS AFTERNOON
PERIOD DURING PEAK HEATING IS MOST FAVORED FOR WHEN SOME SEVERE
STORMS MAY OCCUR. BECAUSE STORMS MAY BE SLOWLY MOVING AT
FIRST...THEY ALSO MAY PRESENT A HEAVY RAINFALL AND LOCALIZED
FLOODING THREAT.

WHILE RAIN MAY ACTUALLY INCREASE IN COVERAGE THIS
EVENING...THUNDERSTORM CHANCES SHOULD BE CONFINED TO AREAS SOUTH
OF INTERSTATE 80. SEVERE CHANCES SHOULD WANE BY MID-EVENING.

WARM AND HUMID WEATHER FOR LATE SUMMER WILL OCCUR TODAY...NAMELY
SOUTH OF THE KANKAKEE RIVER WHERE HEAT INDEX READINGS MAY REACH
100 DEGREES.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

DANGEROUS SWIMMING CONDITIONS ARE POSSIBLE AT LAKE MICHIGAN
BEACHES...NAMELY ALONG THE INDIANA SHORE...ON SATURDAY.

THE WILL BE PERIODIC CHANCES FOR THUNDERSTORMS FROM MONDAY NIGHT
THROUGH WEDNESDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS MAY BE NEEDED ACROSS EAST CENTRAL ILLINOIS AND NORTHWEST
INDIANA THIS AFTERNOON.

&&

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