National Weather Service Marine Forecast FZUS53 KMKX

FZUS53 KMKX 222210
NSHMKX

Nearshore Marine Forecast
National Weather Service Milwaukee/Sullivan WI
510 PM CDT Tue Sep 22 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ643-230400
Sheboygan to Port Washington WI
510 PM CDT Tue Sep 22 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY EVENING

TONIGHT
Northeast wind 15 to 20 knots veering east 15 to 25 knots late in the evening, then easing to 10 to 20 knots after midnight becoming 15 to 20 knots early in the morning. Partly cloudy. Waves 4 to 6 feet building to 5 to 7 feet after midnight, then subsiding to 4 to 6 feet early in the morning.

WEDNESDAY
East wind 15 to 20 knots becoming northeast 10 to 15 knots in the afternoon. Sunny. Waves 4 to 6 feet subsiding to 3 to 4 feet in the afternoon.

WEDNESDAY NIGHT
Northeast wind 10 to 15 knots becoming east 15 to 20 knots in the late evening and overnight. Partly cloudy. Waves 3 to 4 feet.

THURSDAY
East wind 10 to 15 knots easing to 5 to 10 knots late in the afternoon. Sunny in the morning then becoming partly sunny. Waves 3 to 4 feet.

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LMZ644-230400
Port Washington to North Point Light WI
510 PM CDT Tue Sep 22 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY EVENING

TONIGHT
Northeast wind 15 to 20 knots veering east 15 to 25 knots in the late evening and early morning, then easing to 10 to 20 knots early in the morning. Partly cloudy. Waves 4 to 6 feet building to 5 to 7 feet late in the evening, then building to 6 to 8 feet after midnight subsiding to 5 to 7 feet early in the morning.

WEDNESDAY
East wind 15 to 20 knots backing northeast early in the afternoon, then easing to 10 to 15 knots late in the afternoon. Partly sunny. Waves 5 to 7 feet subsiding to 3 to 4 feet.

WEDNESDAY NIGHT
Northeast wind 15 to 20 knots veering east after midnight. Partly cloudy. Waves 3 to 4 feet.

THURSDAY
East wind 15 to 20 knots easing to 10 to 15 knots early in the afternoon, then easing to 5 to 10 knots late in the afternoon. Sunny in the morning then becoming partly sunny. Waves 3 to 4 feet.

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LMZ645-230400
North Point Light to Wind Point WI
510 PM CDT Tue Sep 22 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY EVENING

TONIGHT
Northeast wind 15 to 25 knots veering east in the late evening and early morning, then easing to 10 to 20 knots early in the morning. Partly cloudy. Waves 4 to 6 feet building to 6 to 8 feet.

WEDNESDAY
East wind 10 to 20 knots becoming 15 to 20 knots late in the morning, then backing northeast early in the afternoon becoming northeast 15 to 20 knots late in the afternoon. Partly sunny. Waves 5 to 7 feet subsiding to 4 to 6 feet late in the afternoon.

WEDNESDAY NIGHT
Northeast wind 15 to 20 knots veering east late in the evening, then becoming east 15 to 20 knots after midnight. Partly cloudy. Waves 3 to 4 feet.

THURSDAY
East wind 15 to 20 knots easing to 10 to 15 knots early in the afternoon, then easing to 5 to 10 knots late in the afternoon. Sunny in the morning then becoming partly sunny. Waves 3 to 4 feet.

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LMZ646-230400
Wind Point WI to Winthrop Harbor IL
510 PM CDT Tue Sep 22 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY EVENING

TONIGHT
Northeast wind 15 to 25 knots veering east late in the evening, then becoming east 15 to 25 knots after midnight easing to 10 to 20 knots early in the morning. Partly cloudy through around midnight then becoming mostly cloudy. Waves 5 to 7 feet.

WEDNESDAY
East wind 10 to 20 knots backing northeast 15 to 20 knots in the afternoon. Partly sunny. Waves 5 to 7 feet subsiding to 4 to 6 feet late in the afternoon.

WEDNESDAY NIGHT
East wind 15 to 20 knots. Mostly cloudy through around midnight then becoming partly cloudy. Waves 3 to 5 feet.

THURSDAY
East wind 15 to 20 knots easing to 10 to 15 knots early in the afternoon, then becoming east 10 to 15 knots late in the afternoon. Partly sunny. Waves 3 to 4 feet.

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See Lake Michigan Open Waters Forecast for Friday through Sunday.