FZUS53 KMKX 202010 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 310 PM CDT Sun Sep 20 2026 For waters within five nautical miles of shore on Lake Michigan LMZ643-210900- Sheboygan to Port Washington WI- 310 PM CDT Sun Sep 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY EVENING... .THROUGH EARLY EVENING...Northeast wind up to 30 knots. Partly sunny. Waves 7 to 9 feet. .TONIGHT...Northeast wind up to 30 knots with gusts to around 35 knots becoming northeast up to 30 knots late in the evening, then easing to 15 to 25 knots after midnight veering east early in the morning. Mostly cloudy. Waves 7 to 9 feet. .MONDAY...East wind 15 to 25 knots backing northeast early in the afternoon, then easing to 10 to 20 knots late in the afternoon. Mostly cloudy. Waves 6 to 8 feet subsiding to 5 to 7 feet in the afternoon. .MONDAY NIGHT...Northeast wind 15 to 25 knots easing to 10 to 20 knots late in the evening, then veering east 15 to 20 knots after midnight. Mostly cloudy. Waves 5 to 7 feet. .TUESDAY...Northeast wind 15 to 25 knots easing to 10 to 20 knots early in the afternoon, then becoming northeast 10 to 20 knots late in the afternoon. Partly sunny. Waves 5 to 7 feet. $$ LMZ644-210900- Port Washington to North Point Light WI- 310 PM CDT Sun Sep 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY EVENING... .THROUGH EARLY EVENING...Northeast wind 15 to 25 knots rising to up to 30 knots late in the afternoon. Mostly cloudy with a 50 percent chance of showers. Waves 8 to 10 feet. .TONIGHT...Northeast wind up to 30 knots with gusts to around 35 knots becoming northeast up to 30 knots late in the evening, then becoming east 15 to 25 knots after midnight. Mostly cloudy. Waves 8 to 10 feet. .MONDAY...East wind 15 to 25 knots backing northeast early in the afternoon, then easing to 10 to 20 knots late in the afternoon. Mostly cloudy. Waves 6 to 8 feet subsiding to 5 to 7 feet late in the afternoon. .MONDAY NIGHT...Northeast wind 10 to 20 knots rising to 15 to 25 knots late in the evening, then veering east after midnight backing northeast 15 to 20 knots early in the morning. Mostly cloudy. Waves 5 to 7 feet building to 6 to 8 feet in the late evening and overnight. .TUESDAY...Northeast wind 15 to 25 knots easing to 10 to 20 knots late in the afternoon. Partly sunny. Waves 6 to 8 feet. $$ LMZ645-210900- North Point Light to Wind Point WI- 310 PM CDT Sun Sep 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY EVENING... .THROUGH EARLY EVENING...Northeast wind 15 to 20 knots rising to up to 30 knots late in the afternoon. Showers. Waves 8 to 10 feet. .TONIGHT...Northeast wind up to 30 knots becoming east 15 to 25 knots after midnight. Slight chance of showers in the evening. Waves 8 to 10 feet. .MONDAY...East wind 15 to 25 knots backing northeast early in the afternoon, then easing to 10 to 20 knots late in the afternoon. Mostly cloudy. Waves 6 to 8 feet subsiding to 5 to 7 feet late in the afternoon. .MONDAY NIGHT...Northeast wind 10 to 20 knots becoming east 15 to 25 knots in the late evening and early morning, then becoming northeast 10 to 20 knots early in the morning. Mostly cloudy. Waves 5 to 7 feet building to 6 to 8 feet in the late evening and overnight. .TUESDAY...Northeast wind 15 to 25 knots easing to 10 to 20 knots late in the afternoon. Mostly cloudy. Waves 6 to 8 feet. $$ LMZ646-210900- Wind Point WI to Winthrop Harbor IL- 310 PM CDT Sun Sep 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY EVENING... .THROUGH EARLY EVENING...Northeast wind 15 to 20 knots becoming 15 to 25 knots late in the afternoon. Showers. Waves 7 to 9 feet. .TONIGHT...Northeast wind 15 to 25 knots becoming east up to 30 knots after midnight, then easing to 15 to 25 knots early in the morning. Chance of showers in the evening. Waves 8 to 10 feet. .MONDAY...East wind 15 to 25 knots backing northeast late in the afternoon. Mostly cloudy. Waves 7 to 9 feet subsiding to 5 to 7 feet late in the afternoon. .MONDAY NIGHT...Northeast wind 10 to 20 knots becoming east 15 to 25 knots in the late evening and early morning, then becoming northeast 10 to 20 knots early in the morning. Mostly cloudy. Waves 5 to 7 feet building to 6 to 8 feet in the late evening and overnight. .TUESDAY...Northeast wind 15 to 25 knots easing to 10 to 20 knots late in the afternoon. Mostly cloudy. Waves 6 to 8 feet. $$ See Lake Michigan Open Waters Forecast for Wednesday through Friday.