Monday, August 27, 2018

Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 270945 HWOLOT

Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 445 AM CDT Mon Aug 27 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- 445 AM CDT Mon Aug 27 2018 /545 AM EDT Mon Aug 27 2018/

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

.DAY ONE…Today and Tonight.

Weather hazards expected…

Limited Thunderstorm Risk  Limited Flooding Risk.  Elevated Excessive heat Risk.

DISCUSSION…

Isolated thunderstorms are possible along and northwest of a line from Dixon to Harvard Illinois through midday. Severe weather is not expected at this time. Additional thunderstorms are possible very late tonight mainly for far northern Illinois. A few stronger storms will be possible during this time.

Hot and humid conditions are likely today, with heat indices at or above 105 degrees expected for areas along and south of I-88.

.DAYS TWO THROUGH SEVEN…Tuesday through Sunday.

Tuesday…

Elevated Severe Thunderstorm Risk.  Elevated Flooding Risk.  Elevated Excessive Heat Risk.

Wednesday…

Limited Severe Thunderstorm Risk.

Friday and Saturday…

Elevated Thunderstorm Risk.

Sunday…

Limited Thunderstorm Risk.

DISCUSSION:

Hot and humid conditions are possible again Tuesday, with heat indices possibly reaching 100 to 105 degrees in some locations. In addition, there are periodic chances for thunderstorms with severe storms producing heavy rainfall possible, especially Tuesday into Wednesday.

.SPOTTER INFORMATION STATEMENT…

Spotters may be needed late tonight.

GENERAL STORM MOTION OF THE DAY:

Moving toward the east northeast at around 40 mph.

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