Sunday, September 19, 2021

Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 190837
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
337 AM CDT Sun Sep 19 2021


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-
337 AM CDT Sun Sep 19 2021 /437 AM EDT Sun Sep 19 2021/

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 late tonight.

DISCUSSION...

Isolated thunderstorms are possible late tonight as showers spread
northward. Severe weather is not expected.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Monday through Tuesday Morning...
Limited Flooding Risk.
Limited Thunderstorm Risk at times.
Tuesday Afternoon through Thursday...
High Swim Risk.

DISCUSSION:

Periods of showers and some thunderstorms are forecast Monday into
Tuesday until a strong cold front moves across the area. Any
thunderstorms will produce heavy downpours that may cause ponding
on some roads.

A long duration of gusty onshore winds behind the front through
Thursday will cause a life threatening combination of large waves
and strong currents on southern Lake Michigan.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.

GENERAL STORM MOTION OF THE DAY:

Moving toward the north at 20 to 25 mph.
</pre>


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