Wednesday, April 8, 2015

Hazardous Weather Outlook for Mchenry Co., IL

FLUS43 KLOT 081313
HWOLOT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
813 AM CDT WED APR 8 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-
813 AM CDT WED APR 8 2015

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

.DAY ONE...TODAY AND TONIGHT.

WEATHER HAZARDS EXPECTED:

THUNDERSTORMS...SOME MAY PRODUCE:

LOCALLY HEAVY RAINFALL WHICH COULD RESULT IN LOCALIZED
FLOODING.
HAIL TO ONE INCH IN DIAMETER.
FREQUENT CLOUD TO GROUND LIGHTNING.

AREAS AFFECTED AND TIMING:

ADDITIONAL THUNDERSTORMS WILL DEVELOP LATE THIS AFTERNOON OR
EARLY THIS EVENING FROM THE SOUTHWEST...AND WILL AFFECT THE
ENTIRE AREA OVERNIGHT.

DISCUSSION:

ANOTHER ROUND OF THUNDERSTORMS IS EXPECTED TO DEVELOP LATER
TODAY AND SPREAD ACROSS THE REGION TONIGHT. SOME OF THESE
STORMS MAY BE CAPABLE OF PRODUCING HAIL UP TO QUARTER SIZE AND
HEAVY DOWNPOURS.

IN ADDITION...AREAS OF DENSE FOG ARE LIKELY.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

THE THREAT EXISTS FOR AN OUTBREAK OF SEVERE WEATHER
THUNDERSTORMS...INCLUDING THE POTENTIAL FOR TORNADOES...LATE
THURSDAY AFTERNOON INTO THURSDAY EVENING. ALL OF THE INGREDIENTS
NEED TO COME TOGETHER JUST RIGHT FOR A SIGNIFICANT SEVERE WEATHER
OUTBREAK...AND IF EVEN JUST ONE INGREDIENT FAILS TO MATERIALIZE
THE THREAT DECREASES SUBSTANTIALLY. EARLY INDICATIONS ARE THAT
MANY OF THE INGREDIENTS FOR A SIGNIFICANT OUTBREAK OF SEVERE
THUNDERSTORMS COULD BE IN PLACE THURSDAY AND LATER FORECASTS
AND OUTLOOKS SHOULD BE CLOSELY MONITORED.

THERE IS ANOTHER CHANCE OF THUNDERSTORMS SUNDAY NIGHT AND MONDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TONIGHT.

&&

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