Wednesday, September 7, 2016

Hazardous Weather Outlook for Mchenry Co., IL

FLUS43 KLOT 071751
HWOLOT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1251 PM CDT WED SEP 7 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-
1251 PM CDT WED SEP 7 2016 /151 PM EDT WED SEP 7 2016/

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

WEATHER HAZARDS EXPECTED:
SIGNIFICANT THUNDERSTORM RISK...WITH AN ASSOCIATED:
LIMITED TORNADO RISK.
LIMITED THUNDERSTORM WIND DAMAGE RISK...UP TO 60 MPH.
SIGNIFICANT FLOODING RISK.
ELEVATED EXCESSIVE HEAT RISK.

DISCUSSION:

A CLUSTER OF THUNDERSTORMS WAS LIFTING NORTHEAST ACROSS
CHICAGO LATE THIS MORNING...BUT EXPECTED TO PUSH OVER LAKE MICHIGAN
BY 1 PM CDT. LATE THIS AFTERNOON AND MORE SO THIS EVENING AND
OVERNIGHT...WIDESPREAD THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS
NORTH CENTRAL ILLINOIS AND EXPAND INTO NORTHEAST ILLINOIS AND
NORTHWEST INDIANA OVERNIGHT. HEAVY RAIN IS LIKELY WITH THESE STORMS
AND COULD RESULT IN FLOODING...ESPECIALLY OVER NORTH CENTRAL
ILLINOIS.

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

THURSDAY...
LIMITED THUNDERSTORM RISK.
FRIDAY...
ELEVATED FLOODING RISK.
LIMITED SEVERE THUNDERSTORM RISK.
SATURDAY...
LIMITED THUNDERSTORM RISK.
HIGH SWIM RISK.
MONDAY AND TUESDAY...
LIMITED THUNDERSTORM RISK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION CANNOT BE RULED OUT LATE THIS AFTERNOON AND
EVENING. IN ADDITION...RAINFALL REPORTS ARE APPRECIATED.

GENERAL STORM MOTION OF THE DAY:

MOVING TO THE EAST AT 15 MPH TODAY AND TO THE NORTHEAST AT
25 MPH TONIGHT.
&&

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