Thursday, January 21, 2021

Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 212150
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
350 PM CST Thu Jan 21 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-
350 PM CST Thu Jan 21 2021 /450 PM EST Thu Jan 21 2021/

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

.DAY ONE...Tonight.

Weather hazards expected...

Limited Excessive Cold Risk.
Limited Non thunderstorm wind Risk.

DISCUSSION...

Westerly winds will gust to up to 35 to 40 mph through around
sunset for areas along and north of I-80.

Minimum wind chills will dip to zero to five below zero for
portions of interior northern Illinois in the pre-dawn hours of
Friday.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Friday...
Limited Excessive Cold Risk.
Saturday...
Limited Excessive Cold Risk in the morning.
Limited Snow Risk at night.
Sunday...
Limited Snow Risk.
Limited Ice Accumulation Risk at night south of I-80.

Monday...
Limited Snow and or sleet Risk.
Limited Ice Accumulation Risk.
Limited Non Thunderstorm Wind Risk near Lake Michigan
Limited Lakeshore Flooding Risk.

DISCUSSION:

Sub-zero minimum wind chills are forecast in portions of northern
and central Illinois Friday morning and again late Friday night
into Saturday morning.

Light to moderate snow accumulations and travel impacts are
expected Saturday evening into early Sunday, especially along and
north of I-80.

A winter storm with a potentially significant plowable snowfall is
increasingly possible late Sunday night through Monday evening,
along with some threat for freezing rain south of I-80. The system
will likely be accompanied by gusty northeast winds, which could
also bring a risk for some Lake Michigan shoreline flooding.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.
</pre>


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