Tuesday, July 19, 2016

Hazardous Weather Outlook for Mchenry Co., IL

FLUS43 KLOT 192043
HWOLOT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
343 PM CDT TUE JUL 19 2016


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-
343 PM CDT TUE JUL 19 2016 /443 PM EDT TUE JUL 19 2016/

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

.DAY ONE...TONIGHT.

WEATHER HAZARDS EXPECTED:
LIMITED THUNDERSTORM RISK.

DISCUSSION:

SCATTERED THUNDERSTORMS ARE POSSIBLE AFTER LATE THIS AFTERNOON
AND EVENING MAINLY EAST OF INTERSTATE 39 AND ACROSS THE IROQUOIS
BASIN.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

WEDNESDAY...
LIMITED FLOODING RISK.
LIMITED SEVERE THUNDERSTORM RISK.
LIMITED EXCESSIVE HEAT RISK.
THURSDAY AND FRIDAY...
LIMITED THUNDERSTORM RISK.
SIGNIFICANT EXCESSIVE HEAT RISK.
SATURDAY...
LIMITED THUNDERSTORM RISK.
ELEVATED EXCESSIVE HEAT RISK.
SUNDAY...
LIMITED THUNDERSTORM RISK.

DISCUSSION:

SCATTERED THUNDERSTORMS...SOME MARGINALLY SEVERE...ARE POSSIBLE
WEDNESDAY MORNING THROUGH WEDNESDAY AFTERNOON.

POTENTIALLY DANGEROUS HEAT WILL ARRIVE THURSDAY AND FRIDAY WITH
SOME IMPROVEMENT POSSIBLE SATURDAY. MAXIMUM HEAT INDEX VALUES COULD PEAK
NEAR 115 DEGREES ON THURSDAY AND FRIDAY...AND 100 TO 110 ON SATURDAY.

AREAS NORTH AND CLOSE TO THE LAKE COULD HAVE SOME RELIEF ON FRIDAY DUE
TO POTENTIAL THUNDERSTORMS THURSDAY NIGHT INTO FRIDAY...BUT
CONFIDENCE ON THIS IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.

GENERAL STORM MOTION OF THE DAY:

MOVING SOUTHEAST AT 20 MPH.

&&

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