Hazardous Weather Outlook
Issued by NWS Chicago, IL

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FLUS43 KLOT 281040
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
440 AM CST Tue Feb 28 2017

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
011045-
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-
440 AM CST Tue Feb 28 2017 /540 AM EST Tue Feb 28 2017/

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

.DAY ONE...Today and Tonight.

WEATHER HAZARDS EXPECTED:
  Significant Thunderstorm Risk...with an associated:
      Significant Hail Risk...up to larger than golf ball size.
      Elevated Tornado Risk.
      Significant Thunderstorm Wind Damage Risk.
      Elevated Flooding Risk.

DISCUSSION:

Scattered thunderstorms will be seen through mid afternoon.
Some of these storms may produce large hail in the early to mid
afternoon. Thunderstorms are expected to increase in coverage
late this afternoon and more so after dark. Some severe storms
are likely. Storms are expected to evolve into a complex as they
move east across the area into early overnight.

A large hail threat exists across the entire area with storms late
this afternoon and tonight, and some of these storms could produce
very large hail. The threat of damaging winds and tornadoes exists
primarily south of Interstate 88 this evening into early overnight,
with the highest risk along and south of Interstate 80.


.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Wednesday...
  Elevated Snow Risk.
Thursday...
  Limited Snow Risk.
Sunday Night and Monday...
  Limited Thunderstorm Risk.

DISCUSSION:

Light accumulation of snow is forecast across far northern Illinois
on Wednesday.

.SPOTTER INFORMATION STATEMENT...

Spotters will likely be needed this afternoon into tonight. Due to
very fast storm motion and the likelihood of the most intense storms
in the region being after dark, spotters should use extreme caution.

GENERAL STORM MOTION OF THE DAY:

Moving to the northeast or east at 65 MPH.

&&

$$

LMZ740>745-011045-
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-
440 AM CST Tue Feb 28 2017

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE illinois NEARSHORE
WATERS OF LAKE MICHIGAN AND THE indiana NEARSHORE WATERS OF LAKE
MICHIGAN.

.DAY ONE...Today and Tonight.

Hazardous Conditions for Small Craft including thunderstorms are
likely.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Wednesday through Friday...
  Hazardous Conditions for Small Craft are likely.
Sunday night and Monday...
  Limited thunderstorm risk.

&&

$$

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-011045-
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-
440 AM CST Tue Feb 28 2017

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

.DAY ONE...Today and Tonight.

Thunderstorms are likely across the southern part of the lake. Fog
is also possible tonight.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Gales are possible Wednesday.

&&

$$

MTF

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