FLUS43 KLOT 101717
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1217 PM 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-
1217 PM CDT Mon Jul 10 2017 /117 PM EDT Mon Jul 10 2017/
THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
.DAY ONE...This Afternoon and Tonight.
WEATHER HAZARDS EXPECTED:
Elevated Thunderstorm Risk...with an associated:
Elevated Hail Risk...up to tennis ball size.
Elevated Thunderstorm Wind Damage Risk...up to 60 MPH.
Limited Tornado Risk.
Elevated Flooding Risk.
DISCUSSION:
Scattered thunderstorms are likely to redevelop this afternoon,
generally near 3 to 4 pm. The higher severe weather potential
is from roughly Dixon through the the south Chicago metro and far
northwest Indiana...and areas south of there. Storms that develop
will move slowly southeast into the early evening. These storms
will be capable of producing very large hail and gusty winds to 60
mph. The storms will begin to weaken during the mid to late
evening, likely ending the severe threat.
Very heavy rain can also be expected with any of these storms. This
may result in some localized flash 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 will likely be needed from mid-afternoon through mid-
evening for areas mainly south of Interstate 88.
GENERAL STORM MOTION OF THE DAY:
Moving to the east southeast at 30 mph.
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