Monday, July 14, 2014

Hazardous Weather Outlook for Mchenry Co., IL

FLUS43 KLOT 140947
HWOLOT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
447 AM CDT MON JUL 14 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-
447 AM CDT MON JUL 14 2014 /547 AM EDT MON JUL 14 2014/

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

.DAY ONE...TODAY AND TONIGHT.

WEATHER HAZARDS EXPECTED:

ISOLATED TO SCATTERED THUNDERSTORMS...WHICH MAY PRODUCE:

OCCASIONAL CLOUD TO GROUND LIGHTNING.
ISOLATED WIND GUSTS TO 40 MPH.
BRIEF DOWNPOURS.

AREAS AFFECTED AND TIMING:

ISOLATED THUNDERSTORMS ARE POSSIBLE ACROSS FAR NORTHWEST AND
NORTH CENTRAL ILLINOIS EARLY THIS MORNING. ISOLATED TO SCATTERED
THUNDERSTORMS WILL BE POSSIBLE MAINLY SOUTH OF INTERSTATE 80 THIS
AFTERNOON.

DISCUSSION:

A SMALL UPPER LEVEL DISTURBANCE WILL PASS ACROSS FAR NORTHERN
ILLINOIS THIS MORNING...AND WILL PRODUCE SHOWERS WITH AN ISOLATED
THUNDERSTORM OR TWO. DAYTIME HEATING...COMBINED WITH A COLD FRONTAL
BOUNDARY AND A STRONGER APPROACHING UPPER DISTURBANCE WILL RESULT IN
ISOLATED TO SCATTERED THUNDERSTORMS BY THIS AFTERNOON...MAINLY SOUTH
OF INTERSTATE 80 WHERE MORE ABUNDANT LOW LEVEL MOISTURE WILL SUPPORT
GREATER INSTABILITY. WHILE THESE ISOLATED TO SCATTERED THUNDERSTORMS
WILL BE CAPABLE OF PRODUCING CLOUD TO GROUND LIGHTNING...BRIEF
DOWNPOURS AND WIND GUSTS TO 40 MPH...NO SEVERE ORGANIZED SEVERE
WEATHER IS EXPECTED.

PORTIONS OF THE ILLINOIS RIVER WILL REMAIN IN FLOOD.

HIGH WAVES AND STRONG WINDS WILL CREATE HAZARDOUS SWIMMING CONDITIONS
FROM THIS EVENING THROUGH TONIGHT FOR BEACHES ALONG THE INDIANA LAKE
MICHIGAN SHORE.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

PORTIONS OF THE ILLINOIS RIVER WILL REMAIN IN FLOOD.

HIGH WAVES AND STRONG WINDS WILL CREATE HAZARDOUS SWIMMING
CONDITIONS THROUGH MIDDAY TUESDAY FOR INDIANA LAKE MICHIGAN BEACHES.

THERE IS A CHANCE OF THUNDERSTORMS SUNDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.

&&

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