Friday, July 11, 2014

Hazardous Weather Outlook for Mchenry Co., IL

FLUS43 KLOT 110852
HWOLOT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
352 AM CDT FRI JUL 11 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-
352 AM CDT FRI JUL 11 2014 /452 AM EDT FRI JUL 11 2014/

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

.DAY ONE...TODAY AND TONIGHT.

WEATHER HAZARDS EXPECTED:

SCATTERED THUNDERSTORMS...A FEW MAY PRODUCE:
TORRENTIAL DOWNPOURS.
FREQUENT CLOUD TO GROUND LIGHTNING.
WIND GUSTS TO 40 MPH.

AREAS AFFECTED AND TIMING:

CHANCE OF THUNDERSTORMS BEGINNING LATE THIS EVENING WEST
OF ROCKFORD TO LASALLE LINE...THEN SPREADING EAST AND
INCREASING IN COVERAGE OVERNIGHT FOR ALL OF THE OUTLOOK AREA.

DISCUSSION:

HIGH PRESSURE WILL SLOWLY DEPART THE REGION TO THE EAST THIS
AFTERNOON...WITH LOW LEVEL MOISTURE STEADILY INCREASING.
WITH A VERY MOIST ENVIRONMENT ARRIVING LATE THIS EVENING ALONG
WITH AN UPPER LEVEL DISTURBANCE...THUNDERSTORMS WILL STEADILY
DEVELOP AND INCREASE IN COVERAGE THROUGH THE OVERNIGHT HOURS.
A FEW THUNDERSTORMS COULD EASILY PRODUCE VERY HEAVY RAINFALL
IN A SHORT DURATION...LEADING TO THE POTENTIAL FOR
ISOLATED FLOODING CONCERNS.


.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

SEVERAL PERIODS OF THUNDERSTORMS ARE LIKELY SATURDAY THROUGH
MONDAY. SOME OF THE STORMS COULD PRODUCE LOCALLY HEAVY RAINFALL
AMOUNTS...AND THERE IS SOME POTENTIAL FOR SEVERE THUNDERSTORMS
ESPECIALLY SATURDAY AND SATURDAY EVENING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.

&&

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