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Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
326 PM CDT Thu Jul 18 2019

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-192030-
Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to
mid-line of lake.-
Lake Michigan from Seul Choix Point to Rock Island Passage 5NM
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 5NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to
mid lake-
Lake Michigan from Point Betsie to Manistee MI 5NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM
offshore to mid lake-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid
Lake-
Lake Michigan from Sheboygan to Port Washington WI 5NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor to Michigan City in 5NM
offshore to Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid
Lake-
Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5NM offshore to Mid
lake-
Lake Michigan from St Joseph to South Haven MI 5NM offshore to
Mid Lake-
326 PM CDT Thu Jul 18 2019

This Hazardous Weather Outlook is for the open waters of Lake
Michigan.

.DAY ONE...Tonight

Gusty southwest winds will linger into early evening.

There are more chances for thunderstorms tonight, especially
across central portions of Lake Michigan. There is a slight risk
of severe storms tonight. Large hail and damaging winds are the
main hazards.


.DAYS TWO THROUGH SEVEN...Friday through Thursday

There are chances for thunderstorms Friday night into Sunday. A
few strong to severe storms are possible during this period.

$$
DDV

www.weather.gov/mkx

Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
326 PM CDT Thu Jul 18 2019

WIZ046-047-051-052-056>060-062>072-192030-
Marquette-Green Lake-Fond Du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
326 PM CDT Thu Jul 18 2019

This Hazardous Weather Outlook is for portions of east central
Wisconsin, south central Wisconsin and southeast Wisconsin.

.DAY ONE...Tonight

A Heat Advisory remains in effect for far southwest Wisconsin.
Very warm and humid conditions are expected, with highest heat
index values of 95 to 105 for this area through late afternoon.

There are more chances for thunderstorms tonight, especially
toward central Wisconsin. There is a slight risk of severe storms
tonight. Large hail, damaging winds and heavy rainfall are the
main hazards.

.DAYS TWO THROUGH SEVEN...Friday through Thursday

A Heat Advisory is in effect for all of southern Wisconsin on
Friday for heat index values of 105 to 110 expected Friday
afternoon. Prepare for the heat, and exercise heat safety during
this time.

Heat index values in the 90s are expected most places on
Saturday, but could get over 100 toward Illinois.

There are chances for thunderstorms Friday night into Sunday. A
few strong to severe storms are possible during this period.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed tonight.

$$

Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
326 PM CDT Thu Jul 18 2019

LMZ643>646-192030-
Sheboygan to Port Washington WI-
Port Washington to North Point Light WI-
North Point Light to Wind Point WI-
Wind Point WI to Winthrop Harbor IL-
326 PM CDT Thu Jul 18 2019

This Hazardous Weather Outlook is for the nearshore waters from
Sheboygan Wisconsin to Winthrop Harbor Illinois.

.DAY ONE...Tonight

A Small Craft Advisory is in effect until 7 pm due to lingering
gusty southwest winds.

There are more chances for thunderstorms tonight, especially north
of Port Washington. There is a slight risk of severe storms
tonight. Large hail and damaging winds are the main hazards.

.DAYS TWO THROUGH SEVEN...Friday through Thursday

Southwest winds may reach Small Craft Advisory levels Friday
afternoon.

There are chances for thunderstorms Friday night into Sunday. A
few strong to severe storms are possible during this period.

$$

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
353 PM CDT Thu Jul 18 2019

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
192100-
Winnebago-Boone-McHenry-Lake-Ogle-Lee-De Kalb-Kane-DuPage-Cook-
La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford-
Porter-Newton-Jasper-Benton-
353 PM CDT Thu Jul 18 2019 /453 PM EDT Thu Jul 18 2019/

This Hazardous Weather Outlook is for portions of North Central
Illinois...Northeast Illinois and Northwest Indiana.

.DAY ONE...Tonight.

Weather hazards expected...

  Limited Thunderstorm Risk...with an associated:
     Limited damaging wind risk...up to 50 mph.
  Limited Flooding Risk.
  Significant Excessive heat Risk.

DISCUSSION...

Another round of thunderstorms is likely to develop to our
northwest this evening. There is a small chance that some of
these storms could shift into far northern Illinois, north of
I-88, overnight. If these storms do make it into this area
overnight, there is a small threat for gusty winds and heavy
rainfall.

A very warm and humid night is expected, with lows only in the
upper 70s.

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

Friday...
  Limited Thunderstorm Risk at night.
  Significant Excessive Heat Risk.
Saturday...
  Limited PM Severe Thunderstorm Risk.
  Elevated PM Flooding Risk.
  Extreme Excessive Heat Risk.
Sunday...
  Limited Thunderstorm Risk.
  Limited Flooding Risk.
  Limited Excessive Heat Risk.

DISCUSSION:

Heat will build to dangerous levels for the entire area Friday
through Saturday. Heat indices will climb in excess of 105
degrees for much of the area. Very warm overnight temperatures
will offer little relief from the heat and humidity, especially in
the urban heat island of Chicago.

Strong thunderstorms and heavy rainfall is possible over the area
late Saturday into Sunday morning. This heavy rain could result in
a flash flood risk for portions of the area.

.SPOTTER INFORMATION STATEMENT...

  Spotters will likely be needed tonight.

GENERAL STORM MOTION OF THE DAY:

  Moving toward the east at 20 to 30 mph.

$$

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
353 PM CDT Thu Jul 18 2019

LMZ740>745-192100-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
353 PM CDT Thu Jul 18 2019

This Hazardous Weather Outlook is for portions of the Illinois
nearshore waters of Lake Michigan and the Indiana nearshore
waters of Lake Michigan.

.DAY ONE...Tonight.

Weather hazards expected...

  Limited Thunderstorm Risk...with an associated:
     Limited thunderstorm wind gust risk...up to 40 knots.

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

Friday...
  Limited Thunderstorm Risk.
Saturday...
  Limited Severe Thunderstorm Risk.
Sunday...
  Limited Thunderstorm Risk.

$$

KJB

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Hazardous Weather Outlook
National Weather Service Green Bay WI
352 PM CDT Thu Jul 18 2019

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-192100-
Vilas-Oneida-Forest-Florence-Northern Marinette County-Lincoln-
Langlade-Menominee-Northern Oconto County-Door-Marathon-Shawano-
Wood-Portage-Waupaca-Outagamie-Brown-Kewaunee-Waushara-Winnebago-
Calumet-Manitowoc-Southern Marinette County-
Southern Oconto County-
352 PM CDT Thu Jul 18 2019

This Hazardous Weather Outlook is for north-central and northeast
Wisconsin.

.DAY ONE...Tonight

There is a chance for strong to severe thunderstorms to develop
late this evening through the overnight hours. Damaging winds,
torrential downpours and large hail will be the primary threats.
Localized flooding is possible if storms move over the same area
for any length of time.

.DAYS TWO THROUGH SEVEN...Friday through Thursday

A period of very warm and humid weather is expected Friday into
Friday night. Air temperatures in the upper 80s to middle 90s in
the afternoon, combined with humid conditions, will push heat
index values well into the 90s north, 100 to 105 south. Drink
plenty of water and wear light colored clothing if you are
outdoors for an extended period of time.

The chance of thunderstorms will continue at times on Friday night
into Saturday night. It is possible that a severe thunderstorm
threat could develop at some point, though determining exactly
when is uncertain.

.SPOTTER INFORMATION STATEMENT...

Formal spotter activation may be needed later tonight.

$$

Hazardous Weather Outlook
National Weather Service Green Bay WI
352 PM CDT Thu Jul 18 2019

LMZ521-522-541>543-192100-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
352 PM CDT Thu Jul 18 2019

This Hazardous Weather Outlook is for portions of northwest Lake
Michigan and the waters of Green Bay.

.DAY ONE...Tonight

There is a chance of strong or severe storms which could produce
damaging winds and large hail later this evening through the
overnight hours.

.DAYS TWO THROUGH SEVEN...Friday through Thursday

There is a chance of thunderstorms at times through Saturday night
that may pose a hazard for boaters. Periods of dense marine fog
are also possible.

$$

Kallas/Hykin

Hazardous Weather Outlook
National Weather Service La Crosse WI
236 PM CDT Thu Jul 18 2019

IAZ011-018-019-029-030-WIZ054-061-191200-
Allamakee-Floyd-Chickasaw-Fayette-Clayton-Crawford-Grant-
236 PM CDT Thu Jul 18 2019

This Hazardous Weather Outlook is for portions of northeast Iowa
and southwest Wisconsin.

.DAY ONE...This Afternoon and Tonight

An Excessive Heat Warning remains in effect.

Heat indices will top out near 105, especially in areas that see
some peeks of sunshine. This heat could bring on heat related
illnesses if precautions are not taken.

Strong to severe storms are possible this evening into the
overnight hours. Damaging wind, large hail, and very heavy
rainfall with localized flooding will be the main threats.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

An Excessive Heat Warning remains in effect Friday. Plan on heat
indices topping off in the 100 to 110 range. This heat could
bring on heat related illnesses if precautions are not taken.

Periodic thunderstorm chances will continue into the weekend.
Heavy rainfall could accompany these storms.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed through this evening.

.EMERGENCY MANAGEMENT COORDINATION...

No webinar is scheduled.

$$

CA

Hazardous Weather Outlook
National Weather Service La Crosse WI
236 PM CDT Thu Jul 18 2019

IAZ008>010-MNZ079-086>088-094>096-WIZ029-032>034-041>044-053-055-
191200-
Mitchell-Howard-Winneshiek-Wabasha-Dodge-Olmsted-Winona-Mower-
Fillmore-Houston-Clark-Buffalo-Trempealeau-Jackson-La Crosse-
Monroe-Juneau-Adams-Vernon-Richland-
236 PM CDT Thu Jul 18 2019

This Hazardous Weather Outlook is for portions of northeast
Iowa...southeast Minnesota...southwest Wisconsin and west central
Wisconsin.

.DAY ONE...This Afternoon and Tonight

A Heat Advisory remains in effect.

Heat indices will top out near 100, especially in areas that see
some peeks of sunshine. This heat could bring on heat related
illnesses if precautions are not taken.

Strong to severe storms are possible this evening into the
overnight hours. Damaging wind, large hail, and very heavy
rainfall with localized flooding will be the main threats.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

A Heat Advisory remains in effect Friday. Plan on heat indices
topping off in the 95 to 105 range. This heat could bring on heat
related illnesses if precautions are not taken.

Periodic thunderstorm chances will continue into the weekend.
Heavy rainfall could accompany these storms.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed through this evening.

.EMERGENCY MANAGEMENT COORDINATION...

No webinar is scheduled.

$$

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
512 AM CDT Thu Jul 18 2019

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-191000-
Buchanan-Delaware-Dubuque-Benton-Linn-Jones-Jackson-Iowa-Johnson-
Cedar-Clinton-Muscatine-Scott-Keokuk-Washington-Louisa-Jefferson-
Henry IA-Des Moines-Van Buren-Lee-Jo Daviess-Stephenson-Carroll-
Whiteside-Rock Island-Henry IL-Bureau-Putnam-Mercer-Henderson-
Warren-Hancock-McDonough-Scotland-Clark-
512 AM CDT Thu Jul 18 2019

This Hazardous Weather Outlook is for portions of north central
Illinois...northwest Illinois...west central Illinois...east
central Iowa...northeast Iowa...southeast Iowa and northeast
Missouri.

.DAY ONE...TODAY AND TONIGHT

Thunderstorms will continue across the Outlook Area this morning,
especially north of Interstate 80. Gusty winds, small hail and
locally heavy rainfall may occur with the stronger storm cells.
The heavy rain may produce ponding of water, as well as urban and
small stream flooding especially in areas of repeated storms.

There will be at least a low chance for more strong storms moving
down out of Minnesota and Wisconsin later tonight, affecting
areas mainly north of the Highway 30 corridor. Gusty winds and
heavy rain would be the main threats from any storm that manages
to make it down this far south. There is a marginal risk for
severe weather today and tonight for areas generally along and
north of Interstate 80.

An Excessive Heat Warning remains in effect for the entire
Outlook Area. High heat index readings of 100 to 110 are expected
today.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

An Excessive Heat Warning continues in effect for the Outlook
Area through Saturday. Dangerous heat index readings of 100 to
110 are expected.

The next main chance for thunderstorms will occur late Saturday
and especially Saturday night, as a cold front moves through the
region bringing an end to the dangerous heat. Early indications
are that strong to severe storms will be possible, as well as the
threat for heavy rain and flash flooding. Much of the Outlook
Area has been placed in a marginal risk for severe weather
Saturday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed today and tonight over portions
of the outlook area, especially north of Interstate 80.

$$

12

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
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