WHUS73 KMKX 040812

MWWMKX



URGENT - MARINE WEATHER MESSAGE

National Weather Service Milwaukee/Sullivan WI

312 AM CDT Mon May 4 2026



LMZ261-362-364-563-041615-

/O.CON.KMKX.GL.W.0025.260504T1500Z-260504T2100Z/

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-

312 AM CDT Mon May 4 2026



...GALE WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 4 PM

CDT THIS AFTERNOON...



* WHAT...Southwest winds 20 to 25 kt with gusts up to 35 kt and 

  waves 4 to 7 ft expected.



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



* WHEN...From 10 AM this morning to 4 PM CDT this afternoon.



* 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>646-041615-

/O.CON.KMKX.SC.Y.0049.260504T1500Z-260505T0000Z/

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-

312 AM CDT Mon May 4 2026



...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING

TO 7 PM CDT THIS EVENING...



* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt 

  expected.



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



* WHEN...From 10 AM this morning to 7 PM CDT 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.



&&



$$