weather.gov     
National Weather Service

Watches, Warnings & Advisories
NWS Homepage

Small Craft Advisory


URGENT - MARINE WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
644 AM CST Fri Nov 7 2025

LMZ643>646-072045-
/O.CON.KMKX.SC.Y.0096.000000T0000Z-251108T0000Z/
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-
644 AM CST Fri Nov 7 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

* WHAT...West winds 15 to 25 knots and waves 2 to 4 feet expected.

* WHERE...Nearshore Waters from Sheboygan to Winthrop Harbor IL.

* WHEN...Until 6 PM CST today.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
259 AM CST Fri Nov 7 2025

LMZ740>742-071700-
/O.EXT.KLOT.SC.Y.0097.000000T0000Z-251107T2100Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
259 AM CST Fri Nov 7 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON...

* WHAT...Southwest winds to 30 kt with occasional gales to 35 kt
  diminishing to southwest winds to 25 kt after daybreak expected.

* WHERE...Winthrop Harbor to Calumet Harbor IL.

* WHEN...Until 3 PM CST this afternoon.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

URGENT - MARINE WEATHER MESSAGE
National Weather Service Green Bay WI
208 AM CST Fri Nov 7 2025

LMZ541>543-071615-
/O.CON.KGRB.SC.Y.0084.000000T0000Z-251108T0000Z/
Rock Island Passage to Sturgeon Bay WI-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
208 AM CST Fri Nov 7 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

* WHAT...Southwest winds 15 to 25 kt with gusts to 30 kt, shifting
  west to northwest this morning into this afternoon. Waves 6 to 9
  ft, subsiding to 1 to 3 feet by late this afternoon.

* WHERE...Lake Michigan nearshore waters from Washington Island
  to Sheboygan.

* WHEN...Until 6 PM CST this evening.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

JLA


Hazardous Weather Outlook


Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
640 AM CST Fri Nov 7 2025

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-081245-
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-
640 AM CST Fri Nov 7 2025

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

.DAY ONE...Today and Tonight

Brisk west winds today.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Winds may approach or reach gale force at times late Saturday
night into Sunday, lingering into Monday. More gales are possible
Tuesday.

$$


www.weather.gov/mkx

Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
640 AM CST Fri Nov 7 2025

LMZ643>646-081245-
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-
640 AM CST Fri Nov 7 2025

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

.DAY ONE...Today and Tonight

A Small Craft Advisory is in effect for breezy southwest to west
winds today with waves of 3 to 6 feet this morning.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Additional Small Craft Advisory conditions are expected over the
next week, specifically Saturday night through Tuesday night.
Periods of gale force gusts are possible during this time.

Gusty winds may reach Small Craft Advisory levels again on
Wednesday.

$$

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
245 AM CST Fri Nov 7 2025

LMZ740>745-080845-
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-
245 AM CST Fri Nov 7 2025

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...Today and Tonight.

Weather hazards expected...

  Hazardous conditions for small craft.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Saturday night through Monday...
  Gale force winds and very hazardous waves are possible.
Tuesday through Thursday...
  Hazardous conditions for small craft are likely, and a period
  of Gale Force Winds are possible.

$$

Borchardt

Visit us at www.weather.gov/chicago

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
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE