Tuesday, August 21, 2018

Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 212039 HWOLOT

Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 339 PM CDT Tue Aug 21 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- 339 PM CDT Tue Aug 21 2018 /439 PM EDT Tue Aug 21 2018/

This Hazardous Weather Outlook is for portions of North Central Illinois…Northeast Illinois and Northwest Indiana.

.DAY ONE…Tonight.

Weather hazards expected…

Limited Thunderstorm Risk  Limited Lakeshore Flood Risk  High Swim Risk

DISCUSSION…

Isolated to scattered thunderstorms are possible over the area this afternoon and this evening over the Chicago metropolitan area into northwest Indiana. Some of the storms will likely produce very heavy downpours.

Also, large, battering waves are likely on Lake Michigan through tonight. These large waves could result in some minor lakeshore flooding and will result in life threatening swim conditions at Lake Michigan beaches.

.DAYS TWO THROUGH SEVEN…Wednesday through Monday.

Wednesday…

High Swim Risk.

Thursday…

Limited Thunderstorm Risk.

Friday…

Elevated Thunderstorm Risk.

Saturday…

Limited Thunderstorm Risk.  Limited Excessive Heat Risk.

Sunday and Monday…

Limited Thunderstorm Risk.  Limited Excessive Heat Risk.

.SPOTTER INFORMATION STATEMENT…

Spotter activation will not be necessary through tonight.

GENERAL STORM MOTION OF THE DAY:

Moving toward southeast at 20 to 25 mph.

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