Thursday, January 16, 2020

Hazardous Weather Outlook for McHenry Co., IL

<pre>FLUS43 KLOT 160951
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
351 AM CST Thu Jan 16 2020


Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-Cook-
La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford-
Lake IN-Porter-Newton-Jasper-Benton-
351 AM CST Thu Jan 16 2020 /451 AM EST Thu Jan 16 2020/

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 Excessive Cold Risk.
Elevated Lakeshore Flood Risk Porter County Indiana.

DISCUSSION...

Wind chills of below zero will be seen this morning for parts of
northern Illinois.

Gusty northwest winds will continue at least minor lakeshore
flooding along the Porter County shore today.

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

Friday...
Elevated Snow and Sleet Risk.
Elevated Ice Accumulation Risk at night.
Limited Lakeshore Flood Risk northeast Illinois at night.
Saturday...
Limited Excessive Cold Risk.
Limited Non Thunderstorm Wind Risk.
Limited Ice Accumulation Risk.
Elevated Lakeshore Flood Risk northwest Indiana at night.
Sunday...
Elevated Excessive Cold Risk.
Elevated Lakeshore Flood Risk northwest Indiana.
Monday...
Elevated Excessive Cold Risk.
Tuesday...
Limited Excessive Cold Risk.

DISCUSSION:

A strong weather system will affect the area mid-late Friday
afternoon through Saturday, with the highest potential impacts
from winter weather being later Friday and Friday night. During
that time accumulating snow of several inches is presently
expected especially north of I-80. For along and south of I-80,
snow will transition to a period of sleet and freezing rain Friday
evening. Light icing along with snow of a couple inches are
forecast south of I-80.

On Saturday, strong west winds will gust to 40 to 45 mph. These
winds will lead to potential for blowing snow in open areas of
mainly north central Illinois, as well as lakeshore flooding for
portions of northwest Indiana. In addition, Saturday could have
some spotty wintry precipitation including freezing drizzle and
snow showers.

The coldest air mass of the season will move into the region
Saturday night and persist through Tuesday, with subzero wind
chills through much of the period, even possibly as cold as -15
to -20 Sunday and Monday mornings..

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.
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