FLUS43 KLOT 100854
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
354 AM CDT Mon Jul 10 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-
354 AM CDT Mon Jul 10 2017 /454 AM EDT Mon Jul 10 2017/
THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
.DAY ONE...Today and Tonight.
WEATHER HAZARDS EXPECTED:
Significant Thunderstorm Risk...with an associated:
Limited Hail Risk...up to golf ball size.
Elevated Thunderstorm Wind Damage Risk...up to 60 MPH.
Elevated Flooding Risk.
DISCUSSION:
Thunderstorms will move across the area through mid to late
morning. It appears the severe threat with these storms will
remain low. However, some isolated wind gusts of 40 to 50 mph and
some small hail cant be ruled out with this area of thunderstorms
early this morning.
Scattered thunderstorms are likely to redevelop this afternoon
along a surface frontal boundary, which should reside near the WI
state line early this afternoon before sagging southward late this
afternoon into this evening. These storms will be capable of
producing very large hail to the size of golf balls and gusty
winds to 60 mph. The storms will begin to weaken during the
evening, likely ending the severe threat.
Very heavy rain can also be expected with these storms, both this
morning and again this afternoon and evening. This may result in
some localized flooding concerns.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
Tuesday...
Elevated Flooding Risk.
Limited Severe Thunderstorm Risk.
Wednesday...
Limited Flooding Risk.
Elevated Severe Thunderstorm Risk.
Limited Excessive Heat Risk.
Thursday...
Limited Thunderstorm Risk.
Saturday...
Limited Thunderstorm Risk.
DISCUSSION:
Periodic chances for showers and thunderstorms are likely through
midweek. There will be a continued threat for severe thunderstorms
and heavy rainfall through Wednesday.
Heat index values may reach or slightly exceed 100 degrees
on Wednesday.
.SPOTTER INFORMATION STATEMENT...
Spotters may be needed this afternoon into the early evening.
GENERAL STORM MOTION OF THE DAY:
Moving to the east southeast at 25 to 35 mph.
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