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Dense Fog Advisory


URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
843 AM EDT Mon May 17 2021

LMZ248-250-171500-
/O.CON.KMQT.MF.Y.0004.000000T0000Z-210517T1500Z/
Seul Choix Point to Point Detour MI-
5NM East of a line from Fairport MI to Rock Island Passage-
843 AM EDT Mon May 17 2021

...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 11 AM EDT THIS
MORNING...

* WHAT...Dense fog will reduce visibility to 1/4 NM or less.

* WHERE...Seul Choix Point to Point Detour MI and 5NM East of a
  line from Fairport MI to Rock Island Passage.

* WHEN...Until 11 AM EDT this morning.

* IMPACTS...Low visibility will make navigation difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must navigate, proceed with caution. Use proper fog
signals. Make sure all running lights are on. Remember to use
your radar and compass.

&&

$$


Hazardous Weather Outlook


Hazardous Weather Outlook
National Weather Service Gaylord MI
925 AM EDT Mon May 17 2021

LHZ345>349-LMZ323-341-342-344>346-LSZ321-322-181200-
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-
925 AM EDT Mon May 17 2021

This hazardous weather outlook is for the northern Michigan
nearshore waters of Lake Huron, Lake Michigan and Lake Superior.

.DAY ONE...This afternoon and Tonight.

Areas of dense fog will impact portions of Lake Michigan later
tonight.

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

Areas of dense fog will likely impact portions of Lakes Michigan
and Huron Tuesday morning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

&&

$$

Hazardous Weather Outlook
National Weather Service Duluth MN
439 AM CDT Mon May 17 2021

MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-180945-
Koochiching-North St. Louis-Northern Cook/Northern Lake-
North Itasca-Central St. Louis-Southern Lake/North Shore-
Southern Cook/North Shore-North Cass-South Itasca-South Cass-
Crow Wing-Northern Aitkin-South Aitkin-Carlton/South St. Louis-
Pine-Douglas-Bayfield-Ashland-Iron-Burnett-Washburn-Sawyer-Price-
439 AM CDT Mon May 17 2021

This Hazardous Weather Outlook is for portions of northeast
Minnesota and northwest Wisconsin.

.DAY ONE...Today and Tonight

Elevated fire weather conditions are possible today due to low
relative humidity, especially in northeastern Minnesota.

Isolated thunderstorms are possible this afternoon, mainly across
the Arrowhead of Minnesota. Severe weather is not expected.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Thunderstorm chances will return starting Tuesday evening and
lasting through the weekend. The best chance for thunderstorms
will be Wednesday evening through Friday morning. Severe weather
is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

SKYWARN spotter activation will not be needed Today or Tonight.

$$

Hazardous Weather Outlook
National Weather Service Duluth MN
439 AM CDT Mon May 17 2021

LSZ121-140>148-150-180945-
Bayfield to Oak Point WI-Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-Two Harbors to Duluth MN-
Duluth MN to Port Wing WI-Port Wing to Sand Island WI-
Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI-
Outer Apostle Islands Beyond 5 NM from Mainland-
439 AM CDT Mon May 17 2021

This Hazardous Weather Outlook is for portions of Lake Superior
and the Nearshore waters of western Lake Superior.

.DAY ONE...Today and Tonight

Southwesterly winds will increase today with gusts as high as 20
to locally 25 knots. A Small Craft Advisory may be needed.

Isolated thunderstorms may affect the nearshore zones along the
North Shore this afternoon.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Showers and thunderstorms are expected Wednesday evening through
this weekend.

$$

JDS

More information may be obtained at the following web address:
http://www.weather.gov/duluth (all lower case)

Hazardous Weather Outlook
National Weather Service Marquette MI
416 AM EDT Mon May 17 2021

LMZ221-248-250-180830-
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-
416 AM EDT Mon May 17 2021

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

.DAY ONE...Today and Tonight

Areas of dense fog will continue through this morning. See the
latest Marine Weather Message for details.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Dense fog is possible at times throughout this week as relatively
warm, moist air remains over the cooler Lake Michigan waters.

.SPOTTER INFORMATION STATEMENT...

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

$$

JAW

Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
248 AM CDT Mon May 17 2021

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-180800-
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-
248 AM CDT Mon May 17 2021

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

.DAY ONE...Today and Tonight

Areas of dense fog reducing the visibility to 1 mile or less will
continue north of a line from Port Washington to Whitehall Michigan.
A Marine Dense Fog Advisory remains in effect until 10 am for this
part of the open waters of Lake Michigan.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

There are chances for thunderstorms at times from Tuesday into
the weekend. The best chances will be across the southern half of
the lake until late in the week, when chances will expand to
include the entire lake.

$$
Collar
www.weather.gov/mkx

Hazardous Weather Outlook
National Weather Service Green Bay WI
227 AM CDT Mon May 17 2021

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-180730-
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-
227 AM CDT Mon May 17 2021

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

.DAY ONE...Today and Tonight

Patchy dense fog shifting inland from Lake Michigan could pose a
hazard to motorists along the lakeshore at times through tonight.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

The potential for patchy fog to affect lakeshore areas at times
will continue for most of the week.

Thunderstorms are possible at times Tuesday evening through
next weekend. It is too early to determine the potential for
severe storms.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.

$$

Hazardous Weather Outlook
National Weather Service Green Bay WI
227 AM CDT Mon May 17 2021

LMZ521-522-541>543-180730-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
227 AM CDT Mon May 17 2021

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

.DAY ONE...Today and Tonight

Patchy dense fog will can be expected through tonight on the Lake
and Bay.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Dense fog could pose a hazard to boaters on the Lake and Bay at
times for much of the upcoming week.

Thunderstorms are possible at times Tuesday evening through
next weekend. Any storms would pose a hazard to boaters on the
bay and lake.

$$

Cooley/KLJ

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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