Thursday, September 17, 2015

Hazardous Weather Outlook for Mchenry Co., IL

FLUS43 KLOT 171600
HWOLOT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1100 AM CDT THU SEP 17 2015


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 THU SEP 17 2015

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

WEATHER HAZARDS EXPECTED:

THUNDERSTORMS...SOME MAY PRODUCE:
HAIL TO THE SIZE OF QUARTERS.
WINDS GUSTING TO 60 MPH.
FREQUENT CLOUD TO GROUND LIGHTNING.

AREAS AFFECTED AND TIMING:
THERE IS A SMALL CHANCE FOR THUNDERSTORMS TO DEVELOP THIS
AFTERNOON WHICH SHOULD BE NON-SEVERE WITH LIGHTNING AND
WIND GUSTS UP TO 35 MPH POSSIBLE. THERE IS A LESSER THREAT
FOR THUNDERSTORMS DURING THE EVENING...BUT THEN ANOTHER ROUND
OF STORMS IS EXPECTED LATE TONIGHT. STORMS ARE EXPECTED TO
MOVE WEST TO EAST ACROSS THE OUTLOOK AREA TONIGHT. THE
GREATEST THREAT FOR SEVERE WEATHER WILL PRIMARILY BE ACROSS
NORTH CENTRAL ILLINOIS LATE TONIGHT.

DISCUSSION:

A STORM COMPLEX IS CURRENTLY MOVING EAST ACROSS IOWA AND WILL
PROVIDE A CHANCE FOR THUNDERSTORMS INTO THIS AFTERNOON. WHILE
THIS SYSTEM IS EXPECTED TO DIMINISH AS IT APPROACHES...A FEW
THUNDERSTORMS COULD CREATE GUSTY WINDS AND LIGHTNING. A SECOND
ROUND OF THUNDERSTORMS IS EXPECTED TO DEVELOP AHEAD OF A COLD
FRONT LATE TONIGHT.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE AGAIN FRIDAY AND
FRIDAY NIGHT. LOCALLY HEAVY RAINFALL IS POSSIBLE FRIDAY NIGHT.

HIGH WAVES MAY CREATE HAZARDOUS SWIMMING CONDITIONS FOR ILLINOIS
AND INDIANA BEACHES ON SATURDAY AND SATURDAY EVENING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.

&&

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