FLUS43 KLOT 112140
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
340 PM CST Thu Jan 11 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-
340 PM CST Thu Jan 11 2018 /440 PM EST Thu Jan 11 2018/
THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
.DAY ONE...Tonight.
WEATHER HAZARDS EXPECTED:
Elevated Ice Accumulation Risk.
Elevated Sleet and Snow Risk.
Limited Non Thunderstorm Wind Risk.
DISCUSSION:
Temperatures will continue a dramatic fall late this afternoon
and early evening behind a powerful cold front. As temperatures
drop rapidly below freezing... a flash freeze of wet surfaces is
likely... causing any untreated surface to become very slick.
Additionally... a brief period of freezing rain and sleet is
expected from west to east across the area late this afternoon
through this evening. For areas east of Interstate 57, a longer
period of snow and sleet is probable late this evening into
overnight. For this area... a snow and sleet accumulations up to
an inch and a glaze of ice accumulation is expected.
Given the above conditions... hazardous travel conditions on
untreated roads can be expected this evening.
Wind gusts of 30-40 mph through tonight behind the cold front.
Localized ice jam flooding will remain a threat on area rivers.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Friday...
Elevated Excessive Cold Risk.
Elevated Snow Risk Near Lake Michigan.
Limited Non Thunderstorm Wind Risk Near Lake Michigan.
Saturday...
Elevated Excessive Cold Risk.
Elevated Snow Risk Near Lake Michigan.
Sunday and Monday...
Elevated Excessive Cold Risk.
Limited Snow Risk Sunday Night.
Tuesday through Wednesday...
Elevated Excessive Cold Risk.
DISCUSSION:
Lake effect snow is likely into northeast Illinois and northwest
Indiana beginning Friday afternoon and persisting through
Saturday morning, and likely for northwest Indiana to persist
through Saturday evening. Accumulations of up to a few inches and
sharply reduced visibility conditions near the lake are probable.
Snow is likely across the area Sunday Night into Monday. Minor
accumulations are expected.
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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