Monday, May 18, 2020

Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 182032
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
332 PM CDT Mon May 18 2020


Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
332 PM CDT Mon May 18 2020 /432 PM EDT Mon May 18 2020/

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

.DAY ONE...Tonight.

Weather hazards expected...

Limited Flooding Risk
Limited Thunderstorm Risk well south of I-80.
Elevated Lakeshore Flood Risk.
Limited Fog Risk.

DISCUSSION...

Residual flooding, some significant, will continue tonight across
much of northeast Illinois. Area rivers will also continue to
rise, with many above flood stage. Several locations along the Des
Plaines river will be in major flood stage today.

High lake levels combined with a one foot storm surge and gusty
easterly winds will result in a threat for minor lakeshore
flooding into Tuesday.

There is a potential for cold air funnel clouds and even
a brief tornado touchdown this afternoon south and west of a
Rochelle to Joliet to DeMotte line. Isolated thunderstorms will
also be possible.

Fog will be possible tonight, some of which could become dense
reducing visibilities to under 1 mile at times.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Tuesday...
Elevated Lakeshore Flood Risk.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.

GENERAL STORM MOTION OF THE DAY:

Less than 5 mph.
</pre>


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