Friday, June 27, 2014

Hazardous Weather Outlook for Mchenry Co., IL

FLUS43 KLOT 270929
HWOLOT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
429 AM CDT FRI JUN 27 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-
429 AM CDT FRI JUN 27 2014 /529 AM EDT FRI JUN 27 2014/

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

.DAY ONE...TODAY AND TONIGHT.

WEATHER HAZARDS EXPECTED:

SCATTERED THUNDERSTORMS...A FEW OF WHICH MAY PRODUCE:

LOCALLY HEAVY DOWNPOURS.
OCCASIONAL CLOUD TO GROUND LIGHTNING.
WIND GUSTS UP TO 40 MPH.

AREAS AFFECTED AND TIMING:

ISOLATED TO SCATTERED THUNDERSTORMS ARE POSSIBLE THIS
AFTERNOON AND EVENING. THE GREATEST POTENTIAL FOR STORMS
WILL BE ACROSS THE ILLINOIS PORTION OF THE OUTLOOK AREA...
THOUGH ISOLATED STORMS WILL BE POSSIBLE FOR ALL LOCATIONS
DURING THE LATE AFTERNOON AND EARLY EVENING HOURS.

DISCUSSION:

A SLOW MOVING UPPER LEVEL DISTURBANCE WILL MOVE ACROSS THE
REGION THIS AFTERNOON AND TONIGHT...AS A WARM FRONT LIFTS
INTO THE AREA TONIGHT. THE COMBINATION OF THIS DISTURBANCE
AND INCREASING LOW LEVEL MOISTURE AHEAD OF THE WARM FRONT
WILL RESULT IN THE ATMOSPHERE BECOMING UNSTABLE THIS
AFTERNOON...ALLOWING ISOLATED TO SCATTERED THUNDERSTORMS
TO DEVELOP. THE FOCUS FOR THUNDERSTORM DEVELOPMENT WILL
LIKELY BE AHEAD OF THE WARM FRONT BY EARLY TO MID AFTERNOON...
BUT WITH WEAK WINDS ALOFT STORMS WILL LIKELY BECOME
INCREASINGLY FOCUSED ALONG OUTFLOW BOUNDARIES OR ALONG THE
LAKE BREEZE. SEVERE WEATHER IS NOT ANTICIPATED...THOUGH HEAVY
DOWNPOURS AND GUSTY WINDS MAY OCCUR WITH SOME STORMS.

AREAS OF DENSE FOG WITH VISIBILITY AS LOW AS A QUARTER OF A MILE
WILL AFFECT AREAS WITHIN A FEW MILES OF THE LAKE MICHIGAN SHORE
THIS MORNING.

PORTIONS OF THE ILLINOIS...IROQUOIS...AND KANKAKEE RIVERS WILL
REMAIN IN FLOOD.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

THERE WILL BE PERIODIC CHANCES OF THUNDERSTORMS SATURDAY
THROUGH TUESDAY.

WATER LEVELS WILL REMAIN HIGH ALONG PORTIONS OF THE ILLINOIS...
IROQUOIS AND KANKAKEE RIVERS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.

&&

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