


Nearshore Marine Forecast
Issued by NWS Milwaukee/Sullivan, WI
Issued by NWS Milwaukee/Sullivan, WI
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990 FZUS53 KMKX 230005 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 705 PM CDT Fri Aug 22 2025 For waters within five nautical miles of shore on Lake Michigan LMZ643-230400- Sheboygan to Port Washington WI- 705 PM CDT Fri Aug 22 2025 .TONIGHT...South wind 10 to 20 knots veering southwest 10 to 15 knots in the late evening and early morning, then veering west early in the morning. Slight chance of showers after midnight. Slight chance of thunderstorms after midnight. Chance of showers early in the morning. Waves 1 to 2 feet. .SATURDAY...West wind 10 to 15 knots rising to 15 to 20 knots in the late morning and early afternoon, then becoming west 15 to 20 knots late in the afternoon. Mostly sunny. Waves 1 to 2 feet. .SATURDAY NIGHT...Northwest wind 15 to 20 knots easing to 10 to 15 knots with gusts to around 20 knots in the late evening and early morning, then backing west early in the morning. Mostly clear. Waves 1 to 2 feet. .SUNDAY...West wind 15 to 20 knots becoming 10 to 20 knots with gusts to around 25 knots late in the afternoon. Slight chance of showers in the afternoon. Waves 1 to 2 feet. $$ LMZ644-230400- Port Washington to North Point Light WI- 705 PM CDT Fri Aug 22 2025 .TONIGHT...South wind 5 to 15 knots veering southwest 10 to 15 knots in the late evening and early morning, then veering west early in the morning. Slight chance of showers and thunderstorms after midnight. Waves around 1 foot. .SATURDAY...West wind 10 to 15 knots becoming west 10 to 15 knots with gusts to around 20 knots late in the morning, then rising to 15 to 20 knots early in the afternoon becoming west 15 to 20 knots late in the afternoon. Mostly sunny. Waves 1 to 2 feet. .SATURDAY NIGHT...Northwest wind 15 to 20 knots easing to 10 to 15 knots with gusts to around 20 knots after midnight, then backing west early in the morning. Mostly clear. Waves 1 to 2 feet. .SUNDAY...West wind 10 to 15 knots becoming 10 to 20 knots with gusts to around 25 knots. Slight chance of showers in the afternoon. Waves 1 to 2 feet. $$ LMZ645-230400- North Point Light to Wind Point WI- 705 PM CDT Fri Aug 22 2025 .TONIGHT...South wind 10 to 15 knots veering southwest early in the morning. Slight chance of showers and thunderstorms early in the morning. Waves around 1 foot. .SATURDAY...West wind 10 to 15 knots becoming west 10 to 15 knots with gusts to around 20 knots early in the afternoon, then becoming northwest 15 to 20 knots late in the afternoon. Partly sunny. Waves 1 to 2 feet. .SATURDAY NIGHT...Northwest wind 15 to 20 knots easing to 10 to 15 knots after midnight, then rising to 15 to 20 knots early in the morning. Mostly clear. Waves 1 to 2 feet. .SUNDAY...West wind 15 to 20 knots veering northwest late in the morning, then backing west in the afternoon. Slight chance of showers in the afternoon. Waves 1 to 2 feet. $$ LMZ646-230400- Wind Point WI to Winthrop Harbor IL- 705 PM CDT Fri Aug 22 2025 .TONIGHT...South wind 5 to 10 knots rising to 10 to 15 knots late in the evening, then veering southwest after midnight becoming southwest 10 to 15 knots early in the morning. Slight chance of showers and thunderstorms early in the morning. Waves around 1 foot. .SATURDAY...West wind 10 to 15 knots becoming northwest 15 to 20 knots late in the afternoon. Slight chance of showers in the morning. Waves around 1 foot. .SATURDAY NIGHT...Northwest wind 15 to 20 knots easing to 10 to 15 knots late in the evening, then becoming northwest 10 to 15 knots after midnight. Mostly clear. Waves 1 to 2 feet. .SUNDAY...West wind 10 to 15 knots veering northwest with gusts to around 20 knots late in the morning, then becoming west 15 to 20 knots in the afternoon. Mostly sunny. Waves 1 to 2 feet. $$ See Lake Michigan Open Waters Forecast for Monday through Wednesday.