Monday, August 11, 2014

Hazardous Weather Outlook for Mchenry Co., IL

FLUS43 KLOT 112022
HWOLOT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
322 PM CDT MON AUG 11 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-
322 PM CDT MON AUG 11 2014 /422 PM EDT MON AUG 11 2014/

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

.DAY ONE...TONIGHT.

WEATHER HAZARDS EXPECTED:

SCATTERED THUNDERSTORMS...SOME MAY PRODUCE:

OCCASIONAL CLOUD TO GROUND LIGHTNING.
BRIEF HEAVY DOWNPOURS.
A FEW SPORADIC WIND GUSTS TO 40 MPH.

AREAS AFFECTED AND TIMING:

NORTH CENTRAL ILLINOIS THIS AFTERNOON...NORTHEAST AND PARTS OF
EAST CENTRAL ILLINOIS LATE THIS AFTERNOON AND EARLY THIS EVENING
AND NORTHWEST INDIANA EARLY THIS EVENING.

DISCUSSION:

A COLD FRONT WAS PUSHING EAST OF THE MISSISSIPPI RIVER THIS
AFTERNOON...AND WILL CONTINUE TO MOVE EAST ACROSS THE OUTLOOK
AREA THROUGH THIS EVENING. DAYTIME HEATING HAS LED TO WEAK
DESTABILIZATION OF THE AIR MASS AHEAD OF THE COLD FRONT...AND AN
UPPER LEVEL DISTURBANCE WAS ALSO MOVING SOUTHEAST INTO THE AREA.
ISOLATED TO SCATTERED THUNDERSTORMS HAVE DEVELOPED JUST AHEAD OF
THE FRONT...AND WILL MOVE EAST WITH THE FRONT THROUGH EARLY THIS
EVENING. RELATIVELY LIGHT WINDS ALOFT SHOULD PRECLUDE ANY
SUBSTANTIAL SEVERE WEATHER THREAT...THOUGH THE STRONGEST STORMS
MAY PRODUCE SPORADIC BRIEF GUSTY WINDS TO PERHAPS 40 MPH MAINLY
ACROSS NORTH CENTRAL ILLINOIS THIS AFTERNOON. STORMS MAY ALSO
PRODUCE BRIEF DOWNPOURS. THUNDERSTORMS WILL LIKELY DECREASE IN
COVERAGE LATER THIS EVENING...THOUGH A FEW ISOLATED STORMS MAY
REMAIN POSSIBLE OVER FAR NORTHEAST ILLINOIS AND SOUTHERN LAKE
MICHIGAN INTO THE NIGHT.

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

HIGH WAVES AND STRONG WINDS WILL CREATE HAZARDOUS SWIMMING
CONDITIONS TUESDAY INTO TUESDAY NIGHT ALONG THE ILLINOIS SHORE OF
LAKE MICHIGAN...AND THROUGH WEDNESDAY MORNING FOR BEACHES ALONG THE
INDIANA SHORE.

THERE WILL BE PERIODIC CHANCES OF THUNDERSTORMS ACROSS THE AREA FROM
FRIDAY NIGHT INTO MONDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.

&&

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