Thursday, June 11, 2015

Hazardous Weather Outlook for Mchenry Co., IL

FLUS43 KLOT 111624
HWOLOT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1124 AM CDT THU JUN 11 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-
1124 AM CDT THU JUN 11 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...THE STRONGEST OF WHICH MAY PRODUCE:
GOLF BALL SIZE HAIL.
WIND GUSTS IN EXCESS OF 60 MPH.
A TORNADO.
HEAVY RAINFALL AND LOCALIZED FLOODING.

AREAS AFFECTED AND TIMING:

SCATTERED TO NUMEROUS STORMS ARE EXPECTED TO DEVELOP DURING
THE MID TO LATE AFTERNOON INTO THE EVENING ALONG AND NORTH OF
INTERSTATE 80 AND GRADUALLY MOVE NORTHEAST. THIS IS THE MOST
FAVORED TIME FOR SEVERE WEATHER. MORE STORMS ARE LIKELY LATE
TONIGHT WITH A CHANCE FOR STRONG WINDS.

DISCUSSION:

AS DEEPER MOISTURE RETURNS TO THE AREA LATER TODAY...SCATTERED
STORMS ARE LIKELY WITH THE POSSIBILITY OF A FEW SEVERE STORMS. A
SURFACE WARM FRONT NEAR I-74 THIS MORNING WILL ADVANCE NORTHWARD
AND LIKELY BE NEAR I-80 DURING PEAK HEATING THIS AFTERNOON.
ALONG AND NORTH OF THIS FRONT WILL BE A FAVORED AREA FOR STRONG
STORMS...A FEW OF WHICH LIKELY WILL BE SEVERE IN THE REGION.
WHILE LARGE HAIL AND ISOLATED STRONG WINDS ARE THE PRIMARY THREATS
FROM MID AFTERNOON INTO THE EVENING...THE POSSIBILITY OF A COUPLE
TORNADOES EXISTS WITH STORMS ON THE WARM FRONTAL BOUNDARY.

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

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

THUNDERSTORMS ARE LIKELY ON FRIDAY. THERE IS A CHANCE FOR A FEW
OF THESE TO BE SEVERE. PERIODIC THUNDERSTORM CHANCES WILL EXIST
SATURDAY NIGHT THROUGH EARLY NEXT WEEK.

PORTIONS OF THE IROQUOIS AND KANKAKEE RIVERS WILL REMAIN IN FLOOD
STAGE THROUGH LATE THIS WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TODAY AND THIS EVENING.

&&

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