Sunday, April 18, 2021

Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 181727
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1227 PM CDT Sun Apr 18 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-
1227 PM CDT Sun Apr 18 2021 /127 PM EDT Sun Apr 18 2021/

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

.DAY ONE...This Afternoon and Tonight.

Weather hazards expected...

Limited Thunderstorm Risk.
Elevated Fire Weather Risk.

DISCUSSION...

Isolated showers this afternoon may briefly become strong enough
to produce lightning, primarily south of I-80.

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

Tuesday afternoon and evening...
Limited Non Thunderstorm Wind Risk east of I-55.
Elevated Snow Risk east of I-55.
Tuesday night and Wednesday night...
Significant Freeze Risk.

DISCUSSION:

A late season storm system may bring accumulating wet snow to the
area late Monday night into Tuesday evening, with accumulations
primarily on non-paved surfaces. The greatest potential will be
east of I-55, especially into northwest Indiana, late Tuesday
afternoon and evening. Sub-freezing temperatures Tuesday night
and again Wednesday night will result in a significant freeze
risk.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.

GENERAL STORM MOTION OF THE DAY:

Moving toward the east southeast at 20 mph.
</pre>


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