FZUS53 KMKX 192205 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 505 PM CDT Tue Aug 19 2025 For waters within five nautical miles of shore on Lake Michigan LMZ643-200400- Sheboygan to Port Washington WI- 505 PM CDT Tue Aug 19 2025 .TONIGHT...Northeast wind 10 to 15 knots backing north early in the morning. Isolated sprinkles in the late evening and overnight. Waves 1 to 2 feet. .WEDNESDAY...North wind 10 to 15 knots veering northeast with gusts to around 20 knots in the late morning and early afternoon, then rising to 15 to 20 knots late in the afternoon. Isolated sprinkles. Waves 1 to 3 feet building to 2 to 4 feet in the late morning and afternoon. .WEDNESDAY NIGHT...North wind 15 to 20 knots veering northeast late in the evening, then easing to 10 to 15 knots after midnight becoming northeast 10 to 15 knots early in the morning. Mostly clear. Waves 3 to 4 feet. .THURSDAY...Northeast wind 5 to 10 knots. Sunny. Waves 1 to 2 feet. $$ LMZ644-200400- Port Washington to North Point Light WI- 505 PM CDT Tue Aug 19 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE WEDNESDAY NIGHT... .TONIGHT...Northeast wind 10 to 15 knots easing to 5 to 10 knots late in the evening, then backing north after midnight rising to 10 to 15 knots early in the morning. Isolated sprinkles in the late evening and overnight. Waves 1 to 2 feet. .WEDNESDAY...North wind 10 to 15 knots veering northeast with gusts to around 20 knots in the late morning and early afternoon, then rising to 15 to 20 knots late in the afternoon. Isolated sprinkles. Waves 3 to 4 feet. .WEDNESDAY NIGHT...North wind 15 to 20 knots veering northeast after midnight, then easing to 10 to 15 knots early in the morning. Mostly clear. Waves 3 to 4 feet building to 3 to 5 feet late in the evening, then subsiding to 3 to 4 feet after midnight. .THURSDAY...Northeast wind 5 to 10 knots. Sunny. Waves 2 to 4 feet subsiding to 1 to 2 feet in the late morning and afternoon. $$ LMZ645-200400- North Point Light to Wind Point WI- 505 PM CDT Tue Aug 19 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE WEDNESDAY NIGHT... .TONIGHT...North wind 10 to 15 knots. Isolated sprinkles in the late evening and overnight. Waves 1 to 3 feet. .WEDNESDAY...North wind 10 to 15 knots veering northeast with gusts to around 20 knots late in the morning, then rising to 15 to 20 knots early in the afternoon backing north late in the afternoon. Isolated sprinkles. Waves 3 to 4 feet. .WEDNESDAY NIGHT...North wind 15 to 20 knots veering northeast after midnight, then easing to 10 to 15 knots early in the morning. Mostly clear. Waves 4 to 6 feet subsiding to 3 to 4 feet early in the morning. .THURSDAY...Northeast wind 10 to 15 knots easing to 5 to 10 knots early in the afternoon, then becoming northeast 5 to 10 knots late in the afternoon. Sunny. Waves 2 to 4 feet subsiding to 1 to 2 feet in the afternoon. $$ LMZ646-200400- Wind Point WI to Winthrop Harbor IL- 505 PM CDT Tue Aug 19 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE WEDNESDAY NIGHT... .TONIGHT...North wind 10 to 15 knots. Isolated sprinkles in the late evening and overnight. Waves 1 to 3 feet. .WEDNESDAY...North wind 10 to 15 knots veering northeast with gusts to around 20 knots late in the morning, then rising to 15 to 20 knots early in the afternoon backing north late in the afternoon. Isolated sprinkles. Waves 3 to 4 feet. .WEDNESDAY NIGHT...North wind 15 to 20 knots veering northeast after midnight, then easing to 10 to 15 knots early in the morning. Mostly clear. Waves 3 to 5 feet building to 4 to 6 feet in the late evening and early morning, then subsiding to 3 to 4 feet early in the morning. .THURSDAY...Northeast wind 10 to 15 knots easing to 5 to 10 knots late in the afternoon. Sunny. Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon. $$ See Lake Michigan Open Waters Forecast for Friday through Sunday.