Monday, May 12, 2014

Hazardous Weather Outlook for Mchenry Co., IL

FLUS43 KLOT 120931
HWOLOT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
431 AM CDT MON MAY 12 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-
431 AM CDT MON MAY 12 2014 /531 AM EDT MON MAY 12 2014/

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

.DAY ONE...TODAY AND TONIGHT.

WEATHER HAZARDS EXPECTED:

THUNDERSTORMS...THE MOST INTENSE COULD PRODUCE:
WIND GUSTS OVER 60 MPH.
HAIL UP TO THE SIZE OF QUARTERS.
TORRENTIAL DOWNPOURS.
AND FREQUENT CLOUD TO GROUND LIGHTNING.

AREAS AFFECTED AND TIMING:

WIDELY SCATTERED THUNDERSTORMS ARE POSSIBLE AREA WIDE THROUGH
THE DAY TODAY. THUNDERSTORM CHANCES WILL INCREASE ACROSS NORTH
CENTRAL ILLINOIS AFTER 7 PM WITH HIGHER CHANCES SPREADING SLOWLY
EAST INTO NORTHEAST ILLINOIS AND NORTHWEST INDIANA LATE THIS
EVENING INTO THE OVERNIGHT.

DISCUSSION:

A WEAK UPPER LEVEL DISTURBANCE ALONG WITH THE PRESENCE OF A
MOIST AND UNSTABLE AIR MASS COULD ALLOW FOR ISOLATED
THUNDERSTORMS TO DEVELOP AT ANYTIME TODAY. THERE IS SOME LIMITED
POTENTIAL FOR ISOLATED SEVERE THUNDERSTORMS DURING THE DAY. MORE
ORGANIZED SEVERE THUNDERSTORMS COULD DEVELOP OVER EASTERN IOWA
LATER THIS AFTERNOON AND MOVE INTO NORTH CENTRAL ILLINOIS THIS
EVENING. WHILE THESE THUNDERSTORMS WILL LIKELY BEGIN TO WEAKEN
THIS EVENING...THESE IS A POTENTIAL THAT THEY COULD STILL POSE A
SEVERE THREAT AS THEY INTO NORTH CENTRAL ILLINOIS INTO THE MID
EVENING HOURS.

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

THERE IS A SLIGHT CHANCE OF LINGERING THUNDERSTORMS EARLY TUESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS MAY BE NEEDED TODAY AND INTO THIS EVENING.

&&

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