Hazardous Weather Outlook
Issued by NWS Chicago, IL

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000
FLUS43 KLOT 301721
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1221 PM CDT Thu Mar 30 2017

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
311730-
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-
1221 PM CDT Thu Mar 30 2017 /121 PM EDT Thu Mar 30 2017/

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

.DAY ONE...This Afternoon and Tonight.

WEATHER HAZARDS EXPECTED:
  Elevated Thunderstorm Risk...with an associated:
      Elevated Tornado Risk south of the Kankakee River.
      Elevated Hail Risk...up to quarter size.
      Elevated Thunderstorm Wind Damage Risk...up to 60 MPH.
      Limited Flooding Risk.

A majority of area rivers are experiencing elevated levels, with
minor flooding on many of them.

DISCUSSION:

Scattered thunderstorms producing primarily heavy rain and
localized flooding, with perhaps some small hail, will continue
through early afternoon. Additional thunderstorms will develop
this afternoon as a warm front lifts north across central Illinois
and Indiana. The higher coverage of thunderstorms looks to be
focused mainly south of I-80 in the mid afternoon through the
early evening. Some of the storms could be severe, mainly along
and southeast of a Pontiac to Kankakee to Valparaiso line. Hail
will be a threat with any strong to severe storm in these areas.

The locally greater severe threat will be near and south of where
the warm front lifts to this afternoon, which at this time appears
to be south of the Kankakee River. There is an isolated tornado
and damaging wind risk south of the Kankakee River. Although
severe weather is not expected north of I-80 at this time,
isolated strong storms producing heavy rain and small hail are
possible. The threat for strong to severe thunderstorms will end
during the early evening.

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

Flooding will continue along portions of the Kankakee River in
northwestern Indiana.

Wednesday...
  Limited Thunderstorm Risk.

.SPOTTER INFORMATION STATEMENT...

Spotters will likely be needed this afternoon through early
evening for areas southeast of a Pontiac to Kankakee to
Valparaiso Indiana line..

GENERAL STORM MOTION OF THE DAY:

Moving northeast at 40 MPH.

&&

$$

LMZ740>745-311730-
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-
1221 PM CDT Thu Mar 30 2017

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

.DAY ONE...This Afternoon and Tonight.

Hazardous Conditions for Small Craft are likely.

Scattered thunderstorms are likely.

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

Friday...
 Hazardous Conditions for Small Craft are likely.

&&

$$

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-311730-
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-
1221 PM CDT Thu Mar 30 2017

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

.DAY ONE...This Afternoon and Tonight.

There is a chance of thunderstorms across the south half today.

A few gale force gusts are possible today across the south half.

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

A few gale force gusts are possible Friday across the north half.

&&

$$

Castro

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