Thursday, August 11, 2016

Hazardous Weather Outlook for Mchenry Co., IL

FLUS43 KLOT 112046
HWOLOT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
346 PM CDT THU AUG 11 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-
346 PM CDT THU AUG 11 2016 /446 PM EDT THU AUG 11 2016/

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

.DAY ONE...TONIGHT.

WEATHER HAZARDS EXPECTED:
ELEVATED THUNDERSTORM RISK...WITH AN ASSOCIATED:
LIMITED HAIL RISK...UP TO QUARTER SIZE.
LIMITED THUNDERSTORM WIND DAMAGE RISK...UP TO 60 MPH.
ELEVATED FLOODING RISK.
ELEVATED EXCESSIVE HEAT RISK.

DISCUSSION:

SHOWERS AND THUNDERSTORMS WILL DEVELOP AHEAD OF A COLD FRONT THIS
EVENING AND TONIGHT ACROSS NORTHERN ILLINOIS AND NORTHWEST
INDIANA. SOME OF THESE THUNDERSTORMS MAY BE STRONG TO
SEVERE...MAINLY WEST OF THE FOX RIVER VALLEY. LOCALLY HEAVY
RAINFALL WILL BE POSSIBLE WITH STORMS AREAWIDE.

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

FRIDAY...
ELEVATED FLOODING RISK.
SIGNIFICANT THUNDERSTORM RISK.
LIMITED EXCESSIVE HEAT RISK.
SATURDAY...
LIMITED FLOODING RISK.
ELEVATED THUNDERSTORM RISK.
SUNDAY THROUGH WEDNESDAY...
LIMITED THUNDERSTORM RISK.

DISCUSSION:

A SLOW MOVING COLD FRONT WILL PRODUCE SHOWERS AND THUNDERSTORMS
ACROSS NORTHERN ILLINOIS AND NORTHWEST INDIANA THROUGH THE DAY
FRIDAY. LOCALLY HEAVY RAINFALL AMOUNTS IN EXCESS OF 1.5 INCHES
ARE POSSIBLE WITH THESE STORMS.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS MAY BE NEEDED LATE THIS EVENING AND OVERNIGHT.

GENERAL STORM MOTION OF THE DAY:

MOVING EAST AT 15 MPH.

&&

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