Sunday, July 12, 2015

Hazardous Weather Outlook for Mchenry Co., IL

FLUS43 KLOT 120952
HWOLOT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
452 AM CDT SUN JUL 12 2015


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-
452 AM CDT SUN JUL 12 2015

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

.DAY ONE...TODAY AND TONIGHT.

WEATHER HAZARDS EXPECTED:

THUNDERSTORMS...WHICH MAY PRODUCE:

OCCASIONAL CLOUD TO GROUND LIGHTNING.
LOCALLY HEAVY RAINFALL.
WIND GUSTS TO 60 MPH.

AREAS AFFECTED AND TIMING:

ISOLATED THUNDERSTORMS ARE POSSIBLE TODAY...BUT MAINLY IN THE
AFTERNOON. MORE WIDESPREAD THUNDERSTORM ACTIVITY IS EXPECTED
THIS EVENING BUT ESPECIALLY OVERNIGHT ACROSS THE ENTIRE AREA.

DISCUSSION:

ISOLATED THUNDERSTORMS ARE POSSIBLE TODAY...ESPECIALLY THIS
AFTERNOON AS A LAKE BREEZE BOUNDARY PUSHES INLAND AND ENCOUNTERS
INCREASINGLY WARMER AND MORE HUMID AIR. IT IS NOT CLEAR IF ANY
STORMS WILL FORM BUT THE MOST FAVORED AREA WOULD BE NORTHEAST
ILLINOIS. THUNDERSTORM ACTIVITY INCREASES TONIGHT. THE MAIN AREA
OF THUNDERSTORMS WILL DEVELOP FROM MINNESOTA TO NORTHERN IOWA
AND TRACK SOUTHEASTWARD TOWARD THE OUTLOOK AREA LATE THIS EVENING
AND TONIGHT. HEAVY RAINFALL WILL BE THE PRIMARY CONCERN BUT
DAMAGING WINDS ARE ALSO POSSIBLE.

PORTIONS OF THE ILLINOIS...IROQUOIS...VERMILLION AND KANKAKEE
RIVERS...AND SUGAR CREEK REMAIN IN FLOOD.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

THERE WILL BE PERIODIC CHANCES OF THUNDERSTORMS MONDAY THROUGH
SATURDAY. THERE IS INCREASING POTENTIAL FOR STRONG TO SEVERE
THUNDERSTORMS MONDAY AND MONDAY EVENING. DAMAGING WIND GUSTS AND
LARGE HAIL ARE THE MAIN THREATS...BUT A FEW TORNADOES ARE
POSSIBLE.

PORTIONS OF THE ILLINOIS...IROQUOIS...VERMILLION AND KANKAKEE
RIVERS...AND SUGAR CREEK REMAIN IN FLOOD.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED LATE THIS EVENING AND TONIGHT.

&&

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