Wednesday, August 24, 2016

Hazardous Weather Outlook for Mchenry Co., IL

FLUS43 KLOT 242122
HWOLOT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
422 PM CDT WED AUG 24 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-
422 PM CDT WED AUG 24 2016 /522 PM EDT WED AUG 24 2016/

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

.DAY ONE...TONIGHT.

WEATHER HAZARDS EXPECTED:
SIGNIFICANT THUNDERSTORM RISK...MAINLY LATE TONIGHT.
WITH AN ASSOCIATED:
LIMITED THUNDERSTORM WIND DAMAGE RISK SOUTH OF INTERSTATE 80.
LIMITED HAIL RISK SOUTH OF INTERSTATE 80.
ELEVATED FLOODING RISK...MAINLY SOUTH OF INTERSTATE 88.

DISCUSSION:

A LULL IN WIDESPREAD THUNDERSTORM ACTIVITY IS EXPECTED THROUGH
MUCH OF THE EVENING....WITH MORE WIDESPREAD ACTIVITY EXPECTED TO
MOVE ACROSS THE AREA OVERNIGHT INTO EARLY THURSDAY. THERE IS A LOW
RISK FOR STRONG TO SEVERE THUNDERSTORMS MAINLY SOUTH OF INTERSTATE
80. THE MAIN THREAT WILL BE HEAVY RAINFALL AND FLASH
FLOODING...ESPECIALLY ALONG AND SOUTH OF INTERSTATE 88 IN
ILLINOIS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

THURSDAY...
SIGNIFICANT THUNDERSTORM RISK IN THE EARLY MORNING DIMINISHING
TO A LIMITED RISK IN THE AFTERNOON WITH AN ASSOCIATED:
LIMITED SEVERE THUNDERSTORM RISK EAST OF INTERSTATE 57.
LIMITED FLOODING RISK.

FRIDAY NIGHT... LIMITED THUNDERSTORM RISK.
SATURDAY...LIMITED TO ELEVATED THUNDERSTORM RISK...HIGHEST NORTH
OF INTERSTATE 88.
SUNDAY THROUGH TUESDAY...LIMITED THUNDERSTORM RISK.

DISCUSSION:

AFTER MORNING ACTIVITY DIMINISHES ON THURSDAY...THERE IS A CHANCE
FOR SCATTERED THUNDERSTORMS THURSDAY AFTERNOON...ESPECIALLY EAST
OF INTERSTATE 55...WITH A LIMITED SEVERE RISK EAST OF INTERSTATE
57. HEAVY RAINFALL AND LOCALIZED FLOODING ARE A CONCERN AS
WELL...ESPECIALLY EARLY.

FLOODING IS EXPECTED TO CONTINUE ALONG PORTIONS
OF THE IROQUOIS AND KANKAKEE RIVERS.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS MAY BE NEEDED LATE TONIGHT...MAINLY FOR FLOODING REPORTS.

GENERAL STORM MOTION OF THE DAY:

TO THE EAST AROUND NORTHEAST AROUND 20 TO 30 MPH.

&&

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