Thursday, June 21, 2018

Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 210910 HWOLOT

Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 410 AM CDT Thu Jun 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- 410 AM CDT Thu Jun 21 2018 /510 AM EDT Thu Jun 21 2018/

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

.DAY ONE…Today through Tonight.

Weather hazards expected…

Elevated Thunderstorm Risk...with an associated:     Limited damaging wind risk...up to 60 mph.  Significant Flooding Risk.  High Swim Risk

DISCUSSION…

Scattered thunderstorms are expected across the entire area today and tonight. These storms are expected to produce periods of moderate to heavy rain with the heaviest rains expected generally along and north of Interstate 80 in Illinois. This heavy rain may produce localized flash flooding…especially in areas that have already received heavy rain earlier this week.

Some of the thunderstorms that develop south of Interstate 80 this afternoon into this evening may produce strong gusty winds and an isolated severe thunderstorm is possible.

Strong easterly winds will produce high waves along the Illinois and Lake County Indiana Lake Michigan shore tonight.

.DAYS TWO THROUGH SEVEN…Friday through Wednesday.

Friday…

Elevated Thunderstorm Risk.  High Swim Risk

Sunday…

Limited Thunderstorm Risk.

Tuesday…

Limited Thunderstorm Risk.

Wednesday…

Limited Thunderstorm Risk.  Limited Excessive Heat Risk.

.SPOTTER INFORMATION STATEMENT…

Spotters will likely be needed for rainfall reports and possible flooding.

GENERAL STORM MOTION OF THE DAY:

Moving toward the northeast at 20 mph. </pre>

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