<pre>FLUS43 KLOT 181726 HWOLOT
Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 1226 PM CDT Mon Jun 18 2018
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook- La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford- Lake IN-Porter-Newton-Jasper-Benton- 1226 PM CDT Mon Jun 18 2018 /126 PM EDT Mon Jun 18 2018/
This Hazardous Weather Outlook is for portions of North Central Illinois…Northeast Illinois and Northwest Indiana.
.DAY ONE…This Afternoon and Tonight.
Weather hazards expected…
Elevated Thunderstorm Risk...with an associated: Limited damaging wind risk...up to 60 MPH. Limited Flooding Risk. Significant Excessive heat Risk.
DISCUSSION…
Temperatures will warm to the low to even some mid 90s today. This combined with dewpoints in the 70s will result in dangerous heat indices of 100 to 105 area wide being that this is the third consecutive day with high heat index values and lower recovery at night.
Thunderstorms are expected later this afternoon and evening. An isolated strong to severe thunderstorm is possible, with heavy rainfall also expected. Heavy rain from thunderstorms is also possible Monday night, mainly north of Interstate 80, that may lead to flash flooding.
.DAYS TWO THROUGH SEVEN…Tuesday through Sunday.
Tuesday…
Limited Severe Thunderstorm Risk. Limited Flooding Risk. Limited Excessive Heat Risk.
Wednesday…
Limited Thunderstorm Risk.
Thursday and Friday…
Elevated Thunderstorm Risk.
Saturday and Sunday…
Limited Thunderstorm Risk.
DISCUSSION:
Heavy rain from thunderstorms is also possible again Tuesday, mainly along and south of I-80. This may lead to flash flooding. A few stronger storms are also possible during the afternoon. Warm and muggy conditions will linger into Tuesday mainly south of I-80.
.SPOTTER INFORMATION STATEMENT…
Spotters may be needed this evening.
GENERAL STORM MOTION OF THE DAY:
Moving toward the east at 20 to 30 MPH.
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