Thursday, July 7, 2016

Hazardous Weather Outlook for Mchenry Co., IL

FLUS43 KLOT 071611
HWOLOT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1111 AM CDT THU JUL 7 2016


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-
1111 AM CDT THU JUL 7 2016 /1211 PM EDT THU JUL 7 2016/

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

WEATHER HAZARDS EXPECTED:
ELEVATED THUNDERSTORM RISK...WITH AN ASSOCIATED:
ELEVATED THUNDERSTORM WIND DAMAGE RISK.
LIMITED HAIL RISK...UP TO QUARTER SIZE.
LIMITED FLOODING RISK.
LIMITED EXCESSIVE HEAT RISK.

DISCUSSION:

SCATTERED THUNDERSTORMS ARE EXPECTED THIS AFTERNOON ACROSS AT
LEAST PART OF THE AREA. A FEW OF THESE MAY BECOME SEVERE WITH THE
MAIN THREAT BEING STRONG WINDS AND HEAVY RAIN WITH A CHANCE FOR
SOME HAIL. THE MORE FAVORED POTENTIAL IS SOUTH OF INTERSTATE 80
AND EAST OF INTERSTATE 55.

THERE IS A CHANCE FOR STORMS THIS EVENING WITH THE POSSIBILITY OF
AN ORGANIZED LINE OF STORMS OVERNIGHT. CONFIDENCE IN THIS IS QUITE
LOW THOUGH AS THESE STORMS WOULD DEVELOP OVER MINNESOTA AND IOWA
AND MAY GRADUALLY WEAKEN BEFORE THEY ARRIVE. IF THESE STORMS CAN
MAINTAIN THEMSELVES THEY WOULD POSE A DAMAGING WIND THREAT.

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

FRIDAY...
LIMITED MORNING THUNDERSTORM RISK.
HIGH SWIM RISK FOR NORTHWEST INDIANA LAKE MICHIGAN BEACHES.
SATURDAY...
HIGH SWIM RISK FOR LAKE MICHIGAN BEACHES.
TUESDAY...
LIMITED THUNDERSTORM RISK.
WEDNESDAY...
LIMITED THUNDERSTORM RISK.
LIMITED EXCESSIVE HEAT RISK.

DISCUSSION:

THUNDERSTORMS WILL EXIT THE AREA EARLY FRIDAY MORNING AS A
WEAK COLD FRONT MOVES THROUGH THE AREA.

A PERIOD OF GUSTY NORTHERLY WINDS WILL PRODUCE HIGH WAVES AND
CREATE A HIGH SWIM RISK FOR LAKE MICHIGAN BEACHES SATURDAY INTO
SUNDAY.

THERE IS ANOTHER CHANCE OF THUNDERSTORMS TUESDAY AND WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS MAY BE NEEDED THIS AFTERNOON AND EVENING.

GENERAL STORM MOTION OF THE DAY:

MOVING FROM THE SOUTHWEST TO THE NORTHEAST AT 35 MPH.

&&


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