Saturday, April 12, 2014

Hazardous Weather Outlook for Mchenry Co., IL

FLUS43 KLOT 120924
HWOLOT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
424 AM CDT SAT APR 12 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-
424 AM CDT SAT APR 12 2014 /524 AM EDT SAT APR 12 2014/

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

.DAY ONE...TODAY AND TONIGHT.

WEATHER HAZARDS EXPECTED:

THUNDERSTORMS...THE STRONGEST OF WHICH MAY PRODUCE:

WINDS TO 60 MPH.
HAIL TO THE SIZE OF QUARTERS.
FREQUENT CLOUD TO GROUND LIGHTNING.

AREAS AFFECTED AND TIMING:

THERE IS A CHANCE FOR SEVERE THUNDERSTORMS THIS AFTERNOON AND
EVENING...MAINLY ALONG AND NORTH OF A LINE FROM LASALLE TO GARY.
THUNDERSTORMS WILL THEN BECOME LIKELY OVERNIGHT THOUGH THE SEVERE
THREAT WILL DIMINISH WITH TIME.

DISCUSSION:

A WARM FRONT WILL LIFT NORTH ACROSS THE AREA TODAY. MOST OF THE
THUNDERSTORM ACTIVITY IS EXPECTED TO REMAIN ALONG AND NORTH OF
THE IL/WI STATE LINE...HOWEVER THERE IS A CHANCE THAT A FEW
THUNDERSTORMS MAY DEVELOP FARTHER SOUTH. IF THUNDERSTORMS DO
DEVELOP...THE ENVIRONMENT WOULD SUPPORT SEVERE WEATHER...
PRIMARILY STRONG WINDS AND LARGE HAIL. A SLOW MOVING COLD FRONT
WILL APPROACH THE AREA THIS EVENING AND THUNDERSTORMS WILL BECOME
LIKELY THIS EVENING OVERNIGHT ACROSS NORTH CENTRAL ILLINOIS...
HOWEVER THE THREAT FOR SEVERE WINDS AND HAIL WILL DIMINISH.

MINOR FLOODING WILL CONTINUE ALONG PORTIONS OF THE KANKAKEE RIVER
IN NORTHWEST INDIANA.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

SHOWERS AND THUNDERSTORMS WILL RE-INTENSIFY AND SPREAD SOUTHEAST
ACROSS NORTHERN ILLINOIS AND NORTHWEST INDIANA WITH PERIODS OF VERY
HEAVY RAINFALL POSSIBLE ESPECIALLY LATE SUNDAY AFTERNOON THROUGH
SUNDAY NIGHT. RISES ON AREA RIVERS AND STREAMS RESULTING IN
FLOODING WILL BE POSSIBLE.

MINOR FLOODING WILL CONTINUE ALONG PORTIONS OF THE KANKAKEE RIVER
IN NORTHWEST INDIANA.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS POSSIBLE THIS AFTERNOON AND EVENING.

&&

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