Hazardous Weather Outlook
Issued by NWS Chicago, IL

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FLUS43 KLOT 112140
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
340 PM CST Thu Jan 11 2018

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
122145-
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.

&&

$$

LMZ740>745-122145-
Winthrop Harbor to Wilmette Harbor-
Wilmette Harbor to Northerly Island-
Northerly Island to Calumet Harbor-Calumet Harbor to Gary-
Gary to Burns Harbor-Burns Harbor to Michigan City-
340 PM CST Thu Jan 11 2018

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS NEARSHORE
WATERS OF LAKE MICHIGAN AND THE INDIANA NEARSHORE WATERS OF LAKE
MICHIGAN.

.DAY ONE...Tonight.

  Gale Force Winds and Very Hazardous Waves are likely.

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

Friday...
  Gale Force Winds and Very Hazardous Waves are likely.
Saturday...
  Hazardous Conditions for Small Craft are likely.
Monday...
  Hazardous Conditions for Small Craft are likely.

&&

$$

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-122145-
Lake Michigan from Michigan City IN to St. Joseph MI 5 NM
offshore to Mid Lake-
Lake Michigan from Seul Choix Point to Rock Island Passage 5 NM
offshore to Mid Lake-
Lake Michigan South of a line from Seul Choix Point to the
Mackinac Bridge and north of a line from Charlevoix MI to South
Fox Island 5 NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5 NM offshore to
Mid Lake-
Lake Michigan from Point Betsie to Manistee MI 5 NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5 NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5 NM offshore to
Mid Lake-
Lake Michigan from Sheboygan to Port Washington WI 5 NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5 NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5 NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5 NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5 NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor IL to Michigan City IN 5 NM
offshore to Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5 NM offshore to Mid
Lake-
Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5 NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5 NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5 NM offshore to Mid
Lake-
Lake Michigan from St. Joseph to South Haven MI 5 NM offshore to
Mid Lake-
340 PM CST Thu Jan 11 2018

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE OPEN WATERS OF LAKE
MICHIGAN.

.DAY ONE...Tonight.

Gales and freezing spray will develop rapidly behind a strong
cold front early this evening.

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

Gales and freezing spray will continue Friday and Friday Night,
with freezing spray likely to continue through Saturday.

&&

$$

Ed F

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