Small Craft Advisory 113, NWS Milwaukee, WI

212 
WHUS73 KMKX 160302
MWWMKX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
902 PM CST Mon Dec 15 2025

LMZ261-362-364-563-161115-
/O.CON.KMKX.GL.W.0038.251216T1600Z-251217T0900Z/
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 Rock Island Passage to Sturgeon Bay WI 5NM
offshore to mid lake-
902 PM CST Mon Dec 15 2025

...GALE WARNING REMAINS IN EFFECT FROM 10 AM TUESDAY TO 3 AM CST
WEDNESDAY...

* WHAT...Southwest winds to 30 kt with gusts up to 40 kt and 
  waves 8 to 13 ft expected.

* WHERE...Northern Third of the Open Waters of Lake Michigan.

* WHEN...From 10 AM Tuesday to 3 AM CST Wednesday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

LMZ643>646-161115-
/O.CON.KMKX.SC.Y.0113.251216T1500Z-251217T1200Z/
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-
902 PM CST Mon Dec 15 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM TUESDAY TO
6 AM CST WEDNESDAY...

* WHAT...Southwest winds 15 to 25 kt with gusts up to 30 kt and 
  waves 4 to 6 ft expected.

* WHERE...Nearshore Waters from Sheboygan to North Point 
  Lighthouse.

* WHEN...From 9 AM Tuesday to 6 AM CST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
Wood

579 
WHUS73 KMKX 160808
MWWMKX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
208 AM CST Tue Dec 16 2025

LMZ366-565-567-669-671-673-868-870-872-874-161615-
/O.EXA.KMKX.GL.W.0038.251216T1600Z-251217T0900Z/
Lake Michigan from Point Betsie to Manistee MI 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 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-
208 AM CST Tue Dec 16 2025

...GALE WARNING IN EFFECT FROM 10 AM THIS MORNING TO 3 AM CST
WEDNESDAY...

* WHAT...Southwest winds 20 to 25 kt with gusts up to 35 kt and 
  waves 6 to 11 ft expected.

* WHERE...Central Open Waters of Lake Michigan, north of a Wind
  Point WI to Holland MI line and south of a Sturgeon Bay WI to
  Point Betsie MI line. 

* WHEN...From 10 AM this morning to 3 AM CST Wednesday.

* IMPACTS...Strong winds will cause hazardous waves which could
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

LMZ261-362-364-563-161615-
/O.CON.KMKX.GL.W.0038.251216T1600Z-251217T0900Z/
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 Rock Island Passage to Sturgeon Bay WI 5NM
offshore to mid lake-
208 AM CST Tue Dec 16 2025

...GALE WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 3 AM
CST WEDNESDAY...

* WHAT...Southwest winds 20 to 30 kt with gusts up to 40 kt and 
  waves 8 to 13 ft expected.

* WHERE...Northern Third of the Open Waters of Lake Michigan.

* WHEN...From 10 AM this morning to 3 AM CST Wednesday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

LMZ643>646-161615-
/O.CON.KMKX.SC.Y.0113.251216T1500Z-251217T1200Z/
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-
208 AM CST Tue Dec 16 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING
TO 6 AM CST WEDNESDAY...

* WHAT...Southwest winds 15 to 25 kt with gusts up to 30 kt and
  waves 2 to 5 feet.

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

* WHEN...From 9 AM this morning to 6 AM CST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

Sheppard

324 
WHUS73 KMKX 161545
MWWMKX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
945 AM CST Tue Dec 16 2025

LMZ261-362-364-366-563-565-567-669-671-673-868-870-872-874-162345-
/O.CON.KMKX.GL.W.0038.251216T1600Z-251217T0900Z/
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 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-
945 AM CST Tue Dec 16 2025

...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM CST WEDNESDAY...

* WHAT...Southwest winds 20 to 30 kt with gusts up to 40 kt and 
  waves 8 to 13 ft expected.

* WHERE...Northern Third of the Open Waters of Lake Michigan.

* WHEN...From 10 AM this morning to 3 AM CST Wednesday.

* IMPACTS...Strong winds will cause hazardous waves which could
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

LMZ643>646-162345-
/O.CON.KMKX.SC.Y.0113.000000T0000Z-251217T1200Z/
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-
945 AM CST Tue Dec 16 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST
WEDNESDAY...

* WHAT...Southwest winds 15 to 25 kt with gusts up to 30 kt and 
  waves 2 to 5 feet.

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

* WHEN...Through 6 AM CST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

058 
WHUS73 KMKX 162027
MWWMKX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
227 PM CST Tue Dec 16 2025

LMZ261-362-364-366-563-565-170430-
/O.CON.KMKX.GL.W.0038.000000T0000Z-251217T0900Z/
/O.NEW.KMKX.GL.A.0031.251218T0500Z-251218T1600Z/
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-
227 PM CST Tue Dec 16 2025

...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM CST WEDNESDAY...
...GALE WATCH IN EFFECT FROM WEDNESDAY EVENING THROUGH THURSDAY
MORNING...

* WHAT...For the Gale Warning, southwest winds 20 to 30 kt with 
  gusts up to 40 kt and waves 7 to 12 ft. For the Gale Watch, 
  south winds 20 to 30 kt with gusts up to 40 kt and waves 9 to 
  14 ft possible.

* WHERE...Northern Third of the Open Waters of Lake Michigan.

* WHEN...For the Gale Warning, until 3 AM CST Wednesday. For the 
  Gale Watch, from Wednesday evening through Thursday morning.

* IMPACTS...Strong winds will cause hazardous waves which could
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

LMZ567-669-671-673-868-870-872-874-170430-
/O.CON.KMKX.GL.W.0038.000000T0000Z-251217T0900Z/
/O.NEW.KMKX.GL.A.0031.251218T0500Z-251219T1500Z/
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 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-
227 PM CST Tue Dec 16 2025

...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM CST WEDNESDAY...
...GALE WATCH IN EFFECT FROM WEDNESDAY EVENING THROUGH FRIDAY
MORNING...

* WHAT...For the Gale Warning, southwest winds 20 to 30 kt with 
  gusts up to 35 kt and waves 6 to 11 ft. For the Gale Watch, 
  southwest winds 20 to 30 kt with gusts up to 40 kt and waves 7 
  to 12 ft possible.

* WHERE...Middle Third of the Open Waters of Lake Michigan.

* WHEN...For the Gale Warning, until 3 AM CST Wednesday. For the 
  Gale Watch, from Wednesday evening through Friday morning.

* IMPACTS...Strong winds will cause hazardous waves which could
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

LMZ643>646-170430-
/O.CON.KMKX.SC.Y.0113.000000T0000Z-251217T1200Z/
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-
227 PM CST Tue Dec 16 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST
WEDNESDAY...

* WHAT...Southwest winds 15 to 25 kt with gusts up to 30 kt.

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

* WHEN...Until 6 AM CST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LMZ080-675-777-779-876-878-170430-
/O.NEW.KMKX.GL.A.0031.251218T0500Z-251219T1500Z/
Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to
mid-line of 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 South Haven to Holland MI 5NM offshore to Mid
lake-
Lake Michigan from St Joseph to South Haven MI 5NM offshore to
Mid Lake-
227 PM CST Tue Dec 16 2025

...GALE WATCH IN EFFECT FROM WEDNESDAY EVENING THROUGH FRIDAY
MORNING...

* WHAT...Southwest winds 20 to 30 kt with gusts up to 40 kt and 
  waves 7 to 12 ft possible.

* WHERE...Southern Third of the Open Waters of Lake Michigan.

* WHEN...From Wednesday evening through Friday morning.

* IMPACTS...Strong winds can cause hazardous waves which could
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and waves.

&&

$$

781 
WHUS73 KMKX 170253
MWWMKX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
853 PM CST Tue Dec 16 2025

LMZ261-362-364-366-563-565-171200-
/O.CON.KMKX.GL.W.0038.000000T0000Z-251217T0900Z/
/O.CON.KMKX.GL.A.0031.251218T0500Z-251218T1600Z/
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-
853 PM CST Tue Dec 16 2025

...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM CST WEDNESDAY...
...GALE WATCH REMAINS IN EFFECT FROM WEDNESDAY EVENING THROUGH
THURSDAY MORNING...

* WHAT...For the Gale Warning, southwest winds 20 to 30 kt with 
  gusts up to 40 kt and waves 7 to 12 ft. For the Gale Watch, 
  south winds 20 to 30 kt with gusts up to 40 kt and waves 9 to 
  14 ft possible.

* WHERE...Northern Third of the Open Waters of Lake Michigan.

* WHEN...For the Gale Warning, until 3 AM CST Wednesday. For the 
  Gale Watch, from Wednesday evening through Thursday morning.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

LMZ567-669-671-673-868-870-872-874-171200-
/O.CON.KMKX.GL.W.0038.000000T0000Z-251217T0900Z/
/O.CON.KMKX.GL.A.0031.251218T0500Z-251219T1500Z/
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 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-
853 PM CST Tue Dec 16 2025

...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM CST WEDNESDAY...
...GALE WATCH REMAINS IN EFFECT FROM WEDNESDAY EVENING THROUGH
FRIDAY MORNING...

* WHAT...For the Gale Warning, southwest winds 20 to 30 kt with 
  gusts up to 35 kt and waves 6 to 11 ft. For the Gale Watch, 
  southwest winds 20 to 30 kt with gusts up to 40 kt and waves 7 
  to 12 ft possible.

* WHERE...Middle Third of the Open Waters of Lake Michigan.

* WHEN...For the Gale Warning, until 3 AM CST Wednesday. For the 
  Gale Watch, from Wednesday evening through Friday morning.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

LMZ643>646-171200-
/O.CON.KMKX.SC.Y.0113.000000T0000Z-251217T1200Z/
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-
853 PM CST Tue Dec 16 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST
WEDNESDAY...

* WHAT...Southwest winds 15 to 25 kt with gusts up to 30 kt.

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

* WHEN...Until 6 AM CST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LMZ080-675-777-779-876-878-171200-
/O.CON.KMKX.GL.A.0031.251218T0500Z-251219T1500Z/
Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to
mid-line of 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 South Haven to Holland MI 5NM offshore to Mid
lake-
Lake Michigan from St Joseph to South Haven MI 5NM offshore to
Mid Lake-
853 PM CST Tue Dec 16 2025

...GALE WATCH REMAINS IN EFFECT FROM WEDNESDAY EVENING THROUGH
FRIDAY MORNING...

* WHAT...Southwest winds 20 to 30 kt with gusts up to 40 kt and 
  waves 7 to 12 ft possible.

* WHERE...Southern Third of the Open Waters of Lake Michigan.

* WHEN...From Wednesday evening through Friday morning.

* IMPACTS...Strong winds can cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and waves.

&&

$$

748 
WHUS73 KMKX 170905
MWWMKX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
305 AM CST Wed Dec 17 2025

LMZ261-362-364-366-563-565-171715-
/O.EXP.KMKX.GL.W.0038.000000T0000Z-251217T0900Z/
/O.UPG.KMKX.GL.A.0031.251218T0500Z-251218T1600Z/
/O.NEW.KMKX.GL.W.0039.251218T0500Z-251219T1500Z/
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-
305 AM CST Wed Dec 17 2025

...ONGOING GALE WARNING WILL EXPIRE AT 3 AM CST EARLY THIS 
MORNING...
...NEW GALE WARNING IN EFFECT FROM 11 PM THIS EVENING TO 9 AM CST
FRIDAY...

* WHAT...For Tonight into Thursday morning, south winds 20 to 30
  kt with gusts up to 40 kt and waves 10 to 15 ft expected. For
  Thursday afternoon and onwards, west to northwest winds 20 to 30
  kt with gusts up to 40 kt and waves 8 to 11 ft expected.

* WHERE...Northern Third of the Open Waters of Lake Michigan, 
  Lake Michigan from Point Betsie to Manistee MI 5NM offshore to 
  Mid Lake, and Lake Michigan from Sturgeon Bay to Two Rivers WI 
  5NM offshore to Mid Lake.

* WHEN...From 11 PM this evening to 9 AM CST Friday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

* ADDITIONAL DETAILS...A lull in gales may occur in the late
  morning and afternoon hours of Thursday before ramping back up. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

LMZ567-669-671-673-868-870-872-874-171715-
/O.EXP.KMKX.GL.W.0038.000000T0000Z-251217T0900Z/
/O.UPG.KMKX.GL.A.0031.251218T0500Z-251219T1500Z/
/O.NEW.KMKX.GL.W.0039.251218T0500Z-251219T1500Z/
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 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-
305 AM CST Wed Dec 17 2025

...ONGOING GALE WARNING WILL EXPIRE AT 3 AM CST EARLY THIS 
MORNING...
...NEW GALE WARNING IN EFFECT FROM 11 PM THIS EVENING TO 9 AM CST
FRIDAY...

* WHAT...For Tonight into Thursday morning, south winds 20 to 30
  kt with gusts up to 40 kt and waves 8 to 13 ft expected. From
  Thursday afternoon onwards, west to northwest winds 20 to 30 kt
  with gusts up to 40 kt and waves 8 to 14 ft expected. 

* WHERE...Central portions of the open waters of Lake Michigan.

* WHEN...From 11 PM this evening to 9 AM CST Friday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

* ADDITIONAL DETAILS...A lull in gales may occur in the late
  morning and afternoon hours of Thursday before ramping back up. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

LMZ080-675-777-779-876-878-171715-
/O.UPG.KMKX.GL.A.0031.251218T0500Z-251219T1500Z/
/O.NEW.KMKX.GL.W.0039.251218T0500Z-251219T1500Z/
Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to
mid-line of 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 South Haven to Holland MI 5NM offshore to Mid
lake-
Lake Michigan from St Joseph to South Haven MI 5NM offshore to
Mid Lake-
305 AM CST Wed Dec 17 2025

...GALE WARNING IN EFFECT FROM 11 PM THIS EVENING TO 9 AM CST
FRIDAY...

* WHAT...For Tonight through Thursday morning, south winds 20 to
  30 kt with gusts up to 35 kt and waves 7 to 12 ft expected. For
  Thursday afternoon and onwards, west to northwest winds 20 to 30
  kt with gusts up to 40 kt and waves 8 to 14 ft expected.

* WHERE...Southern portions of the open waters of Lake Michigan.

* WHEN...From 11 PM this evening to 9 AM CST Friday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

* ADDITIONAL DETAILS...A lull in gales may occur in the late
  morning and afternoon hours of Thursday before ramping back up. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

LMZ643>646-171715-
/O.CON.KMKX.SC.Y.0113.000000T0000Z-251217T1200Z/
/O.NEW.KMKX.SC.Y.0114.251218T0000Z-251219T0000Z/
/O.NEW.KMKX.GL.A.0032.251219T0000Z-251219T1200Z/
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-
305 AM CST Wed Dec 17 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST EARLY
THIS MORNING...
...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 PM
CST THURSDAY...
...GALE WATCH IN EFFECT FROM THURSDAY EVENING THROUGH LATE
THURSDAY NIGHT...

* WHAT...For the first Small Craft Advisory, west winds 15 to 20
  kt with gusts up to 30 kt. For the second Small Craft Advisory,
  south winds 15 to 25 kt with gusts up to 30 kt and waves 5 to 8
  ft expected, with a few gusts to gale force possible. For the
  Gale Watch, west to northwest winds 20 to 30 kt with gusts up 
  to 35 kt possible.

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

* WHEN...For the first Small Craft Advisory, until 6 AM CST 
  early this morning. For the second Small Craft Advisory, from 
  6 PM this evening to 6 PM CST Thursday. For the Gale Watch, 
  from 6 PM CST Thursday evening through late Thursday night.

* IMPACTS...Strong winds can cause hazardous waves which could
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and waves.

&&

$$

Sheppard

Area Forecast Discussion
National Weather Service Milwaukee/Sullivan WI
1014 AM CST Mon Dec 15 2025

.KEY MESSAGES...

- Above average temperatures develop Tuesday afternoon through
  Thursday, with highs in the middle to upper 30s.

- The next chances for precipitation (60 to 75 percent) develop
  late Wednesday night into Thursday morning. With temperatures
  near to above freezing, much of this precipitation is expected
  to be rain. A transition to light snow is possible Thursday
  afternoon and evening (15-30% chance) if precipitation manages
  to linger long enough.

&&

.UPDATE...
Issued 1015 AM CST Mon Dec 15 2025

Southwesterly winds will continue to gust between 15 and 25 mph
throughout today, with a few gusts near 30 mph in southeastern
WI. Expecting temperatures to climb into the mid 20s this
afternoon. Winds will gradually ease through the afternoon
hours, becoming light and variable overnight. Expect low
temperatures in the single digits to low teens.

MH

&&

.SHORT TERM...
Issued 400 AM CST Mon Dec 15 2025

Today through Wednesday:

Dry weather and gradually increasing temperatures are expected
through the period. Deep arctic high pressure currently over the
Ohio River Valley will track southeastward through the first
half of this week, gradually weakening and merging into the
Atlantic Ocean. It's close proximity and tight pressure gradient
today will allow for some breezy southwest winds this morning,
gusting upwards of 30 mph at times. Though this will briefly
lead to -5 to -15 Fahrenheit wind chills early this morning, it
will also usher in much warmer air through the course of today,
boosting our high temperatures into the 20s.

Winds decline this afternoon, becoming nearly calm (light
southerly) tonight as temperatures fall to roughly 10 degrees.
Several models are showing a strong signal for fog formation
late tonight, though we disagree with this assessment for the
most part. Surface dewpoints are expected to hold steady
overnight, and lingering high-altitude clouds are expected to
interfere with radiational cooling. That said, we will be
closely monitoring surface dewpoints going into tonight.

Another round of breezy southwesterlies on Tuesday, with high
temperatures lifting into the mid to upper 30s, holding there
through mid week.

Sheppard

&&

.LONG TERM...
Issued 400 AM CST Mon Dec 15 2025

Wednesday night through Sunday:

Our next chance for precip will be late Wednesday night through
Thursday morning (60-75% chances area-wide). The associated low
pressure system tracks eastward along the USA/Canada border,
crossing the UP of Michigan Thursday. Both the WAA ahead of the
associated cold front and the front itself will drop the
majority of the precipitation (late Wed night thru Thu AM), and
forecast soundings strongly favor rain for the majority (if not
the entirety) of this timeframe. Our current forecast 'low
temperature' for Wednesday night is around the freezing mark,
but keep in mind that temperatures are expected to slowly rise
later in the night as precip arrives (if our forecast holds).

Our forecast allows 10-30% precip chances to linger into
Thursday afternoon / evening timeframe. If applicable, this
light precip would transition to light snow, with minimal
accumulations.

A brief shot of cold air arrives Thursday night, with low
temperatures expected to be in the single digits above / below
zero. Temperatures then rebound into the weekend.

Sheppard

&&

.AVIATION...
Issued 1015 AM CST Mon Dec 15 2025

VFR conditions continue through today, with southwest winds
gusting between 20 and 25 kt (strongest at lakeshore terminals).
Expecting overall VFR conditions to continue overnight, but some
patchy fog may develop in southwestern Wisconsin and could
locally reduce visibilities and bring locally low ceilings.
Light and variable winds are expected overnight. Gusty
southwest winds will develop again Tuesday, helping to clear out
any fog.

MH

&&

.MARINE...
Issued 400 AM CST Mon Dec 15 2025

Strong high pressure of 30.7 inches over the Ohio River Valley
early this morning will slowly progress southeastward through the
first half of this week, gradually weakening and merging into the
Atlantic Ocean. With the proximity and strength of the high
pressure system this morning, southwesterly winds with gusts to
gale force are expected, and a Gale Warning remains in effect
through noon CST today for all open waters. These should be
relatively weak (35 kt) gales at best. Moderate freezing spray is
expected through this morning as well. Winds veer due west and
decelerate in a north to south manner this afternoon into tonight.

Strong low pressure around 29.0 inches tracks eastward across
Ontario Canada on Tuesday, working with the aforementioned high
pressure system to drive breezy southwesterly winds. A Gale Watch
is in effect for the northern third of the open waters Tuesday
afternoon through late Tuesday night, where roughly 40 kt gales
are expected. Winds are forecast to hold just shy of gale force
for the rest of the lake, though we will continue to monitor. A
cold front extending south of the low crosses the lake late
Tuesday night, veering winds due west. Winds and gusts subside
behind the front.

Another strong low pressure system is expected to track eastward
along the USA / Canada borderline mid week, likely crossing Lake
Superior Thursday and continuing east. Strong south winds are
expected across Lake Michigan Wednesday night (gales likely over
most of the lake), with the associated cold front crossing the
lake late Thursday morning. Even stronger west to northwesterly
gales are likely behind the front Thursday afternoon into
Thursday night.

A brief lull in the winds is likely mid Friday. A clipper system
crossing southern Canada may lead to a period of gusty southerly
winds late Friday into Friday night.

Sheppard

&&

.MKX WATCHES/WARNINGS/ADVISORIES...
WI...None.
LM...Gale Warning...LMZ080-LMZ261-LMZ362-LMZ364-LMZ366-LMZ563-
     LMZ565-LMZ567-LMZ669-LMZ671-LMZ673-LMZ675-LMZ777-LMZ779-
     LMZ868-LMZ870-LMZ872-LMZ874-LMZ876-LMZ878 until noon
     Monday.

     Gale Watch...LMZ261-LMZ362-LMZ364-LMZ563...noon Tuesday to 3
     AM Wednesday.

     Small Craft Advisory...LMZ645-LMZ646 until 3 PM Monday.

     Small Craft Advisory...LMZ643-LMZ644 until noon Monday.

&&

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Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
422 AM CST Mon Dec 15 2025

WIZ046-047-051-052-056>060-062>072-161030-
Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
422 AM CST Mon Dec 15 2025

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

.DAY ONE...Today and Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

A wintry mix of rain and snow is possible Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

LMZ643>646-161030-
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-
422 AM CST Mon Dec 15 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 remains in effect through this afternoon
due to gusty southwest winds.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Additional rounds of gusty winds and high waves are likely this
week, including the potential for gales late Wednesday night
through Thursday evening.

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-161030-
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-
422 AM CST Mon Dec 15 2025

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

.DAY ONE...Today and Tonight

A Gale Warning remains in effect for all open waters through Noon
CST today. Southwest winds with gusts to around 35 knots are
expected.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Gusty southwest winds develop again Tuesday afternoon through late
Tuesday night. A Gale Watch is in effect for the northern third of
the open waters.

Gales are likely Wednesday night through Thursday night. Gales
will start out of the south, veering northwest as a cold front
passes through.

Additional southerly gales are possible Friday night.

Sheppard

www.weather.gov/mkx