FZUS53 KMKX 191006 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 505 AM CDT Tue Aug 19 2025 For waters within five nautical miles of shore on Lake Michigan LMZ643-191600- Sheboygan to Port Washington WI- 505 AM CDT Tue Aug 19 2025 .TODAY...Northwest wind 10 to 15 knots veering north with gusts to around 20 knots late in the morning, then becoming north 10 to 15 knots early in the afternoon becoming northeast 5 to 10 knots late in the afternoon. Mostly cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon. .TONIGHT...Northeast wind 5 to 10 knots rising to 10 to 15 knots late in the evening, then backing north after midnight becoming north 10 to 15 knots early in the morning. Chance of sprinkles through around midnight. Slight chance of showers after midnight. Waves 1 to 3 feet building to 2 to 4 feet early in the morning. .WEDNESDAY...North wind 10 to 15 knots veering northeast in the late morning and early afternoon, then rising to 15 to 20 knots late in the afternoon. Chance of showers. Waves 2 to 4 feet. .WEDNESDAY NIGHT...North wind 15 to 20 knots becoming northeast 10 to 15 knots in the late evening and overnight. Mostly clear. Waves 2 to 4 feet. $$ LMZ644-191600- Port Washington to North Point Light WI- 505 AM CDT Tue Aug 19 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE WEDNESDAY NIGHT... .TODAY...Northwest wind 10 to 15 knots veering north late in the morning, then becoming north 10 to 15 knots early in the afternoon becoming northeast 5 to 10 knots late in the afternoon. Mostly cloudy. Waves 1 to 2 feet. .TONIGHT...Northeast wind 5 to 10 knots becoming north 10 to 15 knots after midnight. Chance of sprinkles through around midnight. Chance of showers after midnight. Waves 1 to 2 feet building to 2 to 4 feet early in the morning. .WEDNESDAY...North wind 15 to 20 knots veering northeast late in the morning, then easing to 10 to 15 knots early in the afternoon becoming north 15 to 20 knots late in the afternoon. Chance of showers. Waves 2 to 4 feet. .WEDNESDAY NIGHT...North wind 15 to 20 knots becoming northeast 10 to 15 knots after midnight. Mostly clear. Waves 3 to 4 feet. $$ LMZ645-191600- North Point Light to Wind Point WI- 505 AM CDT Tue Aug 19 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE WEDNESDAY NIGHT... .TODAY...Northwest wind 10 to 15 knots with gusts to around 20 knots veering north late in the afternoon. Mostly cloudy. Waves 1 to 2 feet building to 2 to 4 feet in the late morning and afternoon. .TONIGHT...Northeast wind 5 to 10 knots becoming north 10 to 15 knots after midnight, then becoming 10 to 20 knots early in the morning. Chance of sprinkles. Waves 1 to 3 feet building to 2 to 4 feet in the late evening and overnight. .WEDNESDAY...North wind 15 to 20 knots veering northeast late in the morning, then easing to 10 to 15 knots early in the afternoon becoming north 15 to 20 knots late in the afternoon. Chance of showers. Waves 3 to 4 feet. .WEDNESDAY NIGHT...North wind 15 to 20 knots veering northeast after midnight, then becoming east 10 to 15 knots early in the morning. Mostly clear. Waves 3 to 4 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. $$ LMZ646-191600- Wind Point WI to Winthrop Harbor IL- 505 AM CDT Tue Aug 19 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE WEDNESDAY NIGHT... .TODAY...Northwest wind 5 to 15 knots veering north 10 to 15 knots in the late morning and afternoon. Patchy fog in the morning. chance of sprinkles in the morning. Waves 1 to 2 feet building to 2 to 4 feet in the late morning and afternoon. .TONIGHT...North wind 5 to 10 knots rising to 10 to 15 knots after midnight, then becoming north 10 to 15 knots early in the morning. Chance of sprinkles through around midnight. Chance of showers after midnight. Waves 1 to 3 feet building to 2 to 4 feet in the late evening and overnight. .WEDNESDAY...North wind 15 to 20 knots veering northeast in the late morning and early afternoon, then backing north late in the afternoon. Slight chance of showers in the morning, then chance of sprinkles in the afternoon. Waves 3 to 4 feet. .WEDNESDAY NIGHT...North wind 15 to 20 knots becoming northeast 10 to 15 knots after midnight, then veering east early in the morning. Mostly clear. Waves 3 to 4 feet building to 4 to 6 feet late in the evening, then subsiding to 3 to 4 feet after midnight. $$ See Lake Michigan Open Waters Forecast for Thursday through Saturday.