Monday, February 6, 2017

Hazardous Weather Outlook for Mchenry Co., IL

FLUS43 KLOT 061629
HWOLOT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1029 AM CST MON FEB 6 2017


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-
1029 AM CST MON FEB 6 2017 /1129 AM EST MON FEB 6 2017/

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

WEATHER HAZARDS EXPECTED:
LIMITED THUNDERSTORM RISK...WITH AN ASSOCIATED:
LIMITED HAIL RISK...UP TO QUARTER SIZE.
LIMITED THUNDERSTORM WIND DAMAGE RISK...UP TO 60 MPH.
SIGNIFICANT FOG RISK.

DISCUSSION:

SCATTERED THUNDERSTORMS CAPABLE OF PRODUCING LOCALLY HEAVY
RAINFALL RATES ARE POSSIBLE OVERNIGHT. A FEW STORMS HAVE THE POTENTIAL TO
PRODUCE GUSTY WINDS AND MARGINALLY SEVERE HAIL. THE MOST FAVORED
AREA WOULD BE SOUTH OF THE CHICAGO METRO AREA...AND ALONG AND SOUTHEAST OF
INTERSTATE 55.

FOG WILL LIKELY DEVELOP DURING THE EVENING AND BECOME WIDESPREAD BY THE
LATE EVENING...WITH AREAS OF DENSE FOG POSSIBLE.

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

TUESDAY...
LIMITED THUNDERSTORM RISK.
SIGNIFICANT FOG RISK.
WEDNESDAY...
LIMITED EXCESSIVE COLD RISK.
LIMITED SNOW RISK.
THURSDAY...
LIMITED EXCESSIVE COLD RISK.

DISCUSSION:

ISOLATED TO SCATTERED THUNDERSTORMS ARE POSSIBLE TUESDAY MORNING.
FOG WILL LIKELY CONTINUE THROUGH TUESDAY MORNING BEFORE
ERODING...WITH DENSE FOG POSSIBLE. A FAST MOVING SYSTEM COULD
THEN BRING LIGHT SNOW ACCUMULATIONS ON WEDNESDAY...WITH THE BEST CHANCES
ALONG AND SOUTH OF THE INTERSTATE 80 CORRIDOR. THIS WILL BE FOLLOWED BY
THE POTENTIAL FOR SUB-ZERO WIND CHILLS WEDNESDAY NIGHT INTO THURSDAY
MORNING.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS MAY BE NEEDED OVERNIGHT FOR REPORTS OF GUSTY WINDS OR MORE LIKELY
FOR HAIL.

GENERAL STORM MOTION OF THE DAY:

MOVING TO THE NORTHEAST AT 40 TO 45 MPH.

&&

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