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Hazardous Weather Outlook


Hazardous Weather Outlook
National Weather Service Gaylord MI
1251 PM EDT Mon Aug 21 2017

LHZ345>349-LMZ323-341-342-344>346-LSZ321-322-MIZ008-015>036-041-
042-221700-
Straits of Mackinac within 5 nm of Mackinac Bridge including
Mackinac Island-St Ignace to False Detour Channel-
5NM East of Mackinac Bridge to Presque Isle Light MI including
Bois Blanc Island-
Presque Isle Light to Sturgeon Pt MI Including Thunder Bay
National Marine Sanctuary-Sturgeon Pt to Alabaster MI-
Grand Traverse Bay south of a line Grand Traverse Light to
Norwood MI-Seul Choix Point to 5NM West of Mackinac Bridge-
Norwood MI to 5NM West of Mackinac Bridge including Little
Traverse Bay-Sleeping Bear Point to Grand Traverse Light MI-
Point Betsie to Sleeping Bear Point MI-
Manistee to Point Betsie MI-
Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI-
St. Marys River Point Iroquois to E. Potagannissing Bay-Chippewa-
Mackinac-Emmet-Cheboygan-Presque Isle-Charlevoix-Leelanau-Antrim-
Otsego-Montmorency-Alpena-Benzie-Grand Traverse-Kalkaska-Crawford-
Oscoda-Alcona-Manistee-Wexford-Missaukee-Roscommon-Ogemaw-Iosco-
Gladwin-Arenac-
1251 PM EDT Mon Aug 21 2017

This hazardous weather outlook is for northern Lower Michigan...
eastern Upper Michigan...and adjacent nearshore waters of Lake
Michigan...Lake Huron and Lake Superior.

.DAY ONE...This afternoon and tonight.

Scattered thunderstorms are expected this afternoon and early
evening. A few severe thunderstorms are possible, mainly in
northern lower Michigan. The best chance for severe thunderstorms
looks to be between 3 pm and 10 pm, east of I-75 and north of
M-72. Any severe storms could produce damaging wind gusts and
large hail. An isolated tornado is also possible.

Some thunderstorms remain possible through the night. Severe
storms are not expected tonight, but locally heavy rainfall is
possible.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

There is a chance of thunderstorms Tuesday morning, primarily east
of Interstate 75.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report any significant weather and
rainfall amounts to the National Weather Service. Reports may be
made one of three ways:

Online:   weather.gov/gaylord
Facebook: facebook.com/nwsgaylord

Twitter:  twitter.com/nwsgaylord

&&

For more information visit http://weather.gov/gaylord.

$$

Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
1054 AM CDT Mon Aug 21 2017

WIZ046-047-051-052-056>060-062>072-221600-
Marquette-Green Lake-Fond Du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
1054 AM CDT Mon Aug 21 2017

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

.DAY ONE...This Afternoon and Tonight

There is a chance of thunderstorms west of madison late this
afternoon.

Thunderstorms are then expected tonight, moving eastward across
the area. There is a marginal risk for severe storms tonight.
Damaging winds, large hail and heavy rainfall are possible.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

There is a chance of thunderstorms Sunday afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed tonight.

$$

Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
1054 AM CDT Mon Aug 21 2017

LMZ643>646-221600-
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-
1054 AM CDT Mon Aug 21 2017

This Hazardous Weather Outlook is for portions of Lake Michigan.

.DAY ONE...This Afternoon and Tonight

Thunderstorms are then expected later this evening and overnight,
moving eastward across the area. There is a marginal risk for
severe storms tonight. Damaging winds and large hail are possible.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Northwest winds may approach Small Craft Advisory levels late
tonight into Tuesday night.

There is a slight chance of thunderstorms Sunday afternoon.

$$
Hentz

www.weather.gov/mkx

Hazardous Weather Outlook
National Weather Service Green Bay WI
448 AM CDT Mon Aug 21 2017

LMZ521-522-541>543-221100-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
448 AM CDT Mon Aug 21 2017

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

.DAY ONE...Today and Tonight

Thunderstorms will be possible at times later today and especially
tonight. Heavy rainfall and lightning will pose a hazard to
boaters. Strong winds are also possible with some of the storms.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

The probability for widespread hazardous weather is low.

$$

TDH/Uhlmann

Hazardous Weather Outlook
National Weather Service Green Bay WI
448 AM CDT Mon Aug 21 2017

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-221100-
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-
448 AM CDT Mon Aug 21 2017

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

.DAY ONE...Today and Tonight

Isolated Storms will be possible this morning and early
afternoon, and then become more numerous later this afternoon
into tonight. There is a marginal of risk of severe storms with
damaging winds and large hail this afternoon and evening for
locations south of a line from Tomahawk to Wausaukee. Some of the
storms could also produce torrential rainfall which may result in
some ponding of water on roads.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed today into tonight.

$$

Hazardous Weather Outlook
National Weather Service Marquette MI
537 AM EDT Mon Aug 21 2017

LSZ162-240>251-263>267-220945-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-Saxon Harbor WI to Black River MI-
Black River to Ontonagon MI-
Ontonagon to Upper Entrance of Portage Canal MI-
Upper Entrance of Portage Canal to Eagle River MI-
Eagle River to Manitou Island MI-
Manitou Island to Point Isabelle MI-
Point Isabelle to Lower Entrance of Portage Canal MI-
Lower Entrance of Portage Canal To Huron Islands MI Including
Keweenaw and Huron Bays-Huron Islands to Marquette MI-
Marquette to Munising MI-Munising to Grand Marais MI-
Grand Marais to Whitefish Point MI-
Lake Superior from Saxon Harbor WI to Upper Entrance to Portage
Canal MI 5NM off shore to the US/Canadian border including Isle
Royale National Park-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
Lake Superior East of a line from Manitou Island to Marquette MI
and West of a line from Grand Marais MI to the US/Canadian Border
Beyond 5NM from shore-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
537 AM EDT Mon Aug 21 2017 /437 AM CDT Mon Aug 21 2017/

This Hazardous Weather Outlook is for portions of Eastern Lake
Superior...Central Lake Superior and Western Lake Superior.

.DAY ONE...Today and Tonight

Isolated thunderstorms are possible over the southeast half of
Lake Superior tonight.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

No hazardous weather is expected.

.SPOTTER INFORMATION STATEMENT...

The need for weather spotter reports is not anticipated at this
time.

$$

Hazardous Weather Outlook
National Weather Service Marquette MI
537 AM EDT Mon Aug 21 2017

MIZ001>007-009>014-084-085-220945-
Keweenaw-Ontonagon-Northern Houghton-Baraga-Marquette-Alger-Luce-
Gogebic-Iron-Dickinson-Menominee-Delta-Southern Schoolcraft-
Southern Houghton-Northern Schoolcraft-
537 AM EDT Mon Aug 21 2017 /437 AM CDT Mon Aug 21 2017/

This Hazardous Weather Outlook is for portions of western Upper
Michigan and central Upper Michigan.

.DAY ONE...Today and Tonight

Thunderstorms are possible later this afternoon, mainly across the
central, through tonight. The main hazard expected is heavy rain,
which may result in ponding of water in areas of poor drainage at
times.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

There will be a moderate to high swim risk along Alger beaches
Tuesday and along Alger and Marquette beaches Wednesday.

.SPOTTER INFORMATION STATEMENT...

The need for weather spotter reports is not anticipated at this
time.

$$

Hazardous Weather Outlook
National Weather Service Marquette MI
537 AM EDT Mon Aug 21 2017

LMZ221-248-250-220945-
Green Bay North of line from Cedar River MI to Rock Island
Passage-Seul Choix Point to Point Detour MI-
5NM East of a line from Fairport MI to Rock Island Passage-
537 AM EDT Mon Aug 21 2017

This Hazardous Weather Outlook is for portions of Northern Lake
Michigan.

.DAY ONE...Today and Tonight

Thunderstorms are possible this evening through the overnight
hours.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

No hazardous weather is expected.

.SPOTTER INFORMATION STATEMENT...

The need for weather spotter reports is not anticipated at this
time.

$$

Ritzman

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
427 AM CDT Mon Aug 21 2017

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-220930-
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-
427 AM CDT Mon Aug 21 2017

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

.DAY ONE...Today and Tonight.

There is a small chance of thunderstorms this afternoon, mainly
across the south. Thunderstorms are likely late this evening
into overnight, some of which may be strong.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

There is a chance of thunderstorms across the south Tuesday
morning. There is a chance of thunderstorms across the north
Sunday night.

&&

$$

MTF

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HAZARDOUS WEATHER OUTLOOK
National Weather Service Grand Rapids MI
429 AM EDT Mon Aug 21 2017

LMZ844>849-220830-
St Joseph to South Haven MI-South Haven to Holland MI-
Holland to Grand Haven MI-Grand Haven to Whitehall MI-
Whitehall to Pentwater MI-Pentwater to Manistee MI-
429 AM EDT Mon Aug 21 2017

This hazardous weather outlook is for portions of southwest Lower
Michigan.

.DAY ONE...Today and Tonight

Thunderstorms are expected to develop overnight tonight. Some of
the storms could become locally strong to severe. Wind gusts,
large hail, locally heavy rainfall, and cloud to water lightning
strikes will be the main threats.

Winds and waves will increase overnight tonight. Conditions will
deteriorate, with conditions becoming hazardous to boaters and
swimmers late tonight.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

A few thunderstorms will remain possible on Tuesday morning.

Very hazardous conditions can be expected on Tuesday for boaters
and swimmers as waves are expected to build to at least 5 to 7
feet. These conditions could linger into Wednesday before
improving.

$$

NJJ

HAZARDOUS WEATHER OUTLOOK
National Weather Service Grand Rapids MI
429 AM EDT Mon Aug 21 2017

MIZ037>040-043>046-050>052-056>059-064>067-071>074-220830-
Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon-
Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton-
Ingham-Van Buren-Kalamazoo-Calhoun-Jackson-
429 AM EDT Mon Aug 21 2017

This hazardous weather outlook is for portions of southwest Lower
Michigan.

.DAY ONE...Today and Tonight

There is a small chance of a thunderstorm this afternoon mainly
along and east of U.S.-131. These storms are not expected to
become severe.

Thunderstorms are expected to develop overnight tonight. Some of
the storms could become locally strong to severe. Wind gusts,
large hail, locally heavy rainfall, and cloud to ground lightning
strikes will be the main threats.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Thunderstorms will gradually diminish through the day on Tuesday.
Some of the storms could be locally strong early.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will be possible overnight tonight.

$$

Hazardous Weather Outlook...Corrected
National Weather Service Detroit/Pontiac MI
337 AM EDT Mon Aug 21 2017

MIZ047>049-053>055-060>063-068>070-075-076-082-083-220745-
Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-Shiawassee-Genesee-Lapeer-
St. Clair-Livingston-Oakland-Macomb-Washtenaw-Wayne-Lenawee-Monroe-
337 AM EDT Mon Aug 21 2017

This hazardous weather outlook is for portions of southeast
Michigan.

.DAY ONE...Today and Tonight

Thunderstorms are likely as a cold front pushes across the Great
Lakes.  These storms will not be severe but will be capable of a
brief heavy downpour and gusty winds while moving west to east at
around 30 mph.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Thunderstorms are likely on Tuesday as the cold front moves across
the area. There is a marginal risk of severe weather during this
time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today and tonight.

$$

You can obtain your latest National Weather Service forecasts online
at www.weather.gov/detroit.

SP

Hazardous Weather Outlook...Corrected
National Weather Service Detroit/Pontiac MI
337 AM EDT Mon Aug 21 2017

LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-220745-
Lake St Clair-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt
beyond 5 NM off shore-
Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM
off shore-
Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw
Bay-Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
Port Austin to Harbor Beach MI-Harbor Beach to Port Sanilac MI-
Port Sanilac to Port Huron MI-
Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore-
Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore-
Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore-
337 AM EDT Mon Aug 21 2017

This hazardous weather outlook is for portions of Lake Erie, Lake
Huron and Lake St Clair.

.DAY ONE...Today and Tonight

Thunderstorms are likely as a cold front pushes across the Great
Lakes.  These storms will not be severe but will be capable of a
brief heavy downpour and gusty winds while moving west to east at
around 30 mph.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Thunderstorms are likely on Tuesday as the cold front moves across
the area. There is a marginal risk of severe weather during this
time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today and tonight.

$$

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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