Wednesday, January 3, 2018

Hazardous Weather Outlook for McHenry Co., IL

FLUS43 KLOT 032145
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
345 PM CST Wed Jan 3 2018


Winnebago-Boone-McHenry-Lake Illinois-Ogle-Lee-De Kalb-Kane-
DuPage-Cook-La Salle-Kendall-Grundy-Will-Kankakee-Livingston-
Iroquois-Ford-Lake Indiana-Porter-Newton-Jasper-Benton-
345 PM CST Wed Jan 3 2018 /445 PM EST Wed Jan 3 2018/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.

.DAY ONE...Tonight.

WEATHER HAZARDS EXPECTED:

Significant Excessive Cold Risk.
Elevated Snow Risk.

DISCUSSION:

Lake effect snow showers are expected to develop tonight over
southern Lake Michigan. These showers are likely to move onshore
and impact portions of northeastern Porter County Indiana though
the night. Snow accumulations of a couple inches are possible by
early Thursday morning.

Elsewhere, dangerous wind chills of 20 below to 25 below are
expected across most of northern Illinois and northwestern
Indiana away from Lake Michigan tonight.

Localized ice jam flooding will remain a threat on area rivers.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Thursday...
Significant Excessive Cold Risk.
Elevated Snow Risk.
Friday and Saturday...
Significant Excessive Cold Risk.
Monday...
Limited Excessive Cold Risk.
Tuesday...
Elevated Excessive Cold Risk.

DISCUSSION:

Wind chills of 20 below to 30 below are expected across most of
northern Illinois and northwestern Indiana away from Lake Michigan
Thursday morning.

Periods of accumulating lake effect snow showers are likely over
northeastern portions of Porter county Indiana through Thursday
night.

Wind chills are likely to be 20 to 30 below zero again Thursday
night and Friday night.

Accumulating snow is possible over portions of the area Sunday
into Monday.

Localized ice jam flooding will remain a threat on area rivers.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.

&&



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