Saturday, December 23, 2017

Hazardous Weather Outlook for McHenry Co., IL

FLUS43 KLOT 230913
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
313 AM CST Sat Dec 23 2017


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-
313 AM CST Sat Dec 23 2017 /413 AM EST Sat Dec 23 2017/

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

.DAY ONE...Today and Tonight.

WEATHER HAZARDS EXPECTED:

Limited Snow Risk far southeast early this morning and again
southwest late tonight.

DISCUSSION:

A band of snow will shift into east central Illinois and northwest
Indiana. While heavier snows are expected south of the area, some
light snow may enter a few counties across these areas. Snow will
arrive from the west across Lasalle, Livingston, and possibly a few
other adjacent counties late tonight.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Sunday...
Elevated Snow Risk.
Monday through Wednesday...
Elevated Excessive Cold Risk.
Thursday and Friday...
Limited Excessive Cold Risk.

DISCUSSION:

A band of accumulating snow will shift into northeast Illinois
and northwest Indiana, with the more moderate intensity snowfall
expected between 8 am and 3 pm. Snowfall rates up to a half inch
per hour are possible for a few hours, with quarter inch per
hour rates more common outside of the heavier band. At this point areas
along and southeast of a Pontiac to Chicago line are favored for
more accumulation, but areas north to the Wisconsin border may
still see some accumulating snow. Small shifts in the storm
track will affect totals. Most of the snow will end by sunset,
maybe lasting a tad longer across northwest Indiana.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.

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