Monday, August 25, 2014

Hazardous Weather Outlook for Mchenry Co., IL

FLUS43 KLOT 251600
HWOLOT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1100 AM CDT MON AUG 25 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-
1100 AM CDT MON AUG 25 2014 /1200 PM EDT MON AUG 25 2014/

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THE HIGHEST HEAT INDEX VALUES OF THE SUMMER THUS FAR ARE
ANTICIPATED THIS AFTERNOON...ESPECIALLY ALONG AND SOUTH OF
INTERSTATE 80. HEAT INDEX READINGS OF 105 TO 109 ARE FORECAST
SOUTH OF AN AMBOY TO KANKAKEE LINE.

WEATHER HAZARDS EXPECTED:

SCATTERED THUNDERSTORMS...SOME COULD PRODUCE:
TORRENTIAL RAINFALL AND FLASH FLOODING.
FREQUENT CLOUD TO GROUND LIGHTNING.
WIND GUSTS OVER 40 MPH.

AREAS AFFECTED AND TIMING:

SCATTERED THUNDERSTORMS WILL BE SEEN ACROSS NORTHERN ILLINOIS
THIS AFTERNOON...WITH LIKELY THUNDERSTORMS IMMEDIATELY ADJACENT
TO THE WISCONSIN BORDER. CHANCES FOR STORMS WILL EXPAND ACROSS
THE AREA THROUGH TONIGHT.

DISCUSSION:

ONGOING THUNDERSTORMS ACROSS SOUTHERN WISCONSIN THROUGH EASTERN
IOWA ARE LIKELY TO SLOWLY DRIFT EAST. THEIR COVERAGE MAY
DIMINISH SOME...BUT AT LEAST SCATTERED STORMS ARE PROBABLE NORTH
OF INTERSTATE 80 THIS AFTERNOON. THE HUMID AND UNSTABLE AIR WILL
LINGER INTO TONIGHT CONTINUE THUNDERSTORM CHANCES AND EXPANDING
THEM AREAWIDE.

AN AIR QUALITY ACTION DAY IS IN EFFECT FOR FAR NORTHWEST INDIANA
THROUGH THIS EVENING.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

THERE IS A CHANCE OF THUNDERSTORMS TUESDAY THROUGH SUNDAY. HEAVY
RAIN AND FLASH FLOODING WILL BE POSSIBLE WITH ANY THUNDERSTORMS
THAT DEVELOP...ESPECIALLY TUESDAY THROUGH WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT.

&&

http://goo.gl/CGdhSQ
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