Hazardous Weather Outlook
Issued by NWS Chicago, IL

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FLUS43 KLOT 260906
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
406 AM CDT Wed Apr 26 2017

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
270915-
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-
406 AM CDT Wed Apr 26 2017 /506 AM EDT Wed Apr 26 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:
      Limited Thunderstorm Wind Damage Risk...up to 60 MPH.
  Elevated Flooding Risk.

DISCUSSION:

Deep low pressure across the plains will bring periods of showers
and storms today and tonight. The first wave will come this morning
mainly west of Chicago. Storms will be limited and not severe.

Showers and storms will increase in coverage from the southwest
this afternoon ahead of a cold front. Damaging winds may be possible
with some of these storms, mainly mid to late afternoon through early
evening. The greater severe threat will remain south of our area,
but with areas south and east of Interstate 55 would be favored if
stronger storms to develop farther north. Additional heavy rain
will occur this evening and overnight, which will bring the concern
for street and possible river flooding, as some areas may receive 1
to 2 inches of rainfall.

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

Friday and Saturday...
  Limited Thunderstorm Risk.
Sunday...
  Limited Flooding Risk.
  Limited Thunderstorm Risk.


DISCUSSION:

Deep low pressure across the plains will bring several waves of rain and
storms this weekend. Thunder would be most prevalent later Saturday
into Sunday. Heavy rain is the highest concern.

.SPOTTER INFORMATION STATEMENT...

Spotters may be needed late this afternoon and early evening.

GENERAL STORM MOTION OF THE DAY:

Moving northeast at 45 to 50 mph.

&&

$$

LMZ740>745-270915-
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-
406 AM CDT Wed Apr 26 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 are likely.

Thunderstorms are possible at times through tonight.

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

Friday through Sunday...
  Hazardous Conditions for Small Craft are likely, especially northeast
  Illinois.
Monday and Tuesday...
  Hazardous Conditions for Small Craft are likely at times.

In addition...Thunderstorms are possible Saturday afternoon into
Sunday evening.

&&

$$

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-270915-
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-
406 AM CDT Wed Apr 26 2017

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

.DAY ONE...Today and Tonight.

Thunderstorms are possible at times through tonight.

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

Thunderstorms are possible Saturday afternoon into Sunday evening. Gales
are possible Sunday across the south half.

&&

$$

KMD

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