Thursday, May 8, 2014

Hazardous Weather Outlook for Mchenry Co., IL

FLUS43 KLOT 081330
HWOLOT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
830 AM CDT THU MAY 8 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-
830 AM CDT THU MAY 8 2014 /930 AM EDT THU MAY 8 2014/

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

.DAY ONE...TODAY AND TONIGHT.

WEATHER HAZARDS EXPECTED:

THUNDERSTORMS...A FEW MAY PRODUCE:
HAIL LARGER THAN ONE INCH IN DIAMETER.
STRONG DAMAGING WIND GUSTS IN EXCESS OF 60 MPH.
LOCALLY HEAVY RAINFALL.
AND FREQUENT CLOUD TO GROUND LIGHTNING.

AREAS AFFECTED AND TIMING:

THUNDERSTORMS ARE EXPECTED TO DEVELOP VERY LATE THIS AFTERNOON
OR MORE LIKELY THIS EVENING WEST OF LA SALLE TO ROCKFORD
LINE...WITH THUNDERSTORMS SPREADING EAST AND INCREASING IN
COVERAGE THIS EVENING THROUGH THE OVERNIGHT.

DISCUSSION:

A FEW THUNDERSTORMS MAY DEVELOP EARLY THIS MORNING ACROSS
NORTHEAST MISSOURI AND SLIDE NORTHEAST ACROSS NORTHERN ILLINOIS
BEFORE LIFTING NORTH INTO WISCONSIN. A LULL IN THE THUNDERSTORM
ACTIVITY IS EXPECTED AS THE ATMOSPHERE BECOMES CAPPED LATE THIS
MORNING THROUGH THIS AFTERNOON. THE CAP IS EXPECTED TO ERODE BY
3 PM CDT WITH THUNDERSTORMS STEADILY DEVELOPING WEST OF A
ROCKFORD TO LA SALLE LINE. AT THE ONSET...ISOLATED SUPERCELLS
ARE EXPECTED AND MAY EVOLVE INTO A LINEAR SEGMENT LATE THIS
EVENING. THIS LINE WILL THEN SLOWLY SLIDE EAST TONIGHT AND
LIKELY CONTINUE INTO THE PRE- DAWN HOURS FRIDAY ACROSS PORTIONS
OF NORTHEAST ILLINOIS AND NORTHWEST INDIANA.

THUNDERSTORMS WILL HAVE THE POTENTIAL TO PRODUCE LARGE HAIL
AND DAMAGING WINDS. HEAVY DOWNPOURS WILL ALSO BE POSSIBLE WITH
A CHANCE FOR LOCALIZED FLOODING.

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

LINGERING THUNDERSTORMS WILL BE POSSIBLE FRIDAY MORNING...WITH
THE POTENTIAL FOR A FEW OF THESE STORMS REACHING SEVERE LIMITS
OVER THE FAR SOUTHEASTERN PORTIONS OF THE AREA.

THERE IS ANOTHER CHANCE FOR THUNDERSTORMS SATURDAY NIGHT THROUGH
TUESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.

&&

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