FZUS53 KMKX 191010 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 510 AM CDT Sun Apr 19 2026 For waters within five nautical miles of shore on Lake Michigan LMZ643-191600- Sheboygan to Port Washington WI- 510 AM CDT Sun Apr 19 2026 .TODAY...West wind 10 to 15 knots veering north with gusts to around 20 knots late in the afternoon. Chance of sprinkles and slight chance of snow showers in the morning, then chance of showers late in the morning. Chance of sprinkles early in the afternoon. Waves 1 to 2 feet. .TONIGHT...North wind 10 to 15 knots veering northeast late in the evening, then becoming north 5 to 10 knots after midnight. Partly cloudy. Waves 1 to 2 feet. .MONDAY...West wind 5 to 10 knots backing south late in the morning, then rising to 10 to 15 knots early in the afternoon rising to 15 to 20 knots late in the afternoon. Sunny. Waves 1 to 2 feet building to 2 to 4 feet late in the afternoon. .MONDAY NIGHT...South wind 15 to 25 knots becoming 15 to 20 knots after midnight. Mostly cloudy through around midnight then becoming partly cloudy. Waves 3 to 5 feet building to 4 to 6 feet in the late evening and overnight. A small craft advisory may be needed. $$ LMZ644-191600- Port Washington to North Point Light WI- 510 AM CDT Sun Apr 19 2026 .TODAY...West wind 10 to 15 knots veering northwest with gusts to around 20 knots late in the afternoon. Chance of sprinkles. Waves around 1 foot. .TONIGHT...North wind 10 to 15 knots easing to 5 to 10 knots late in the evening, then veering northeast after midnight. Partly cloudy. Waves 1 to 2 feet. .MONDAY...Northwest wind 5 to 10 knots backing south late in the morning, then rising to 10 to 15 knots early in the afternoon rising to 15 to 20 knots late in the afternoon. Sunny. Waves 1 to 2 feet building to 2 to 4 feet late in the afternoon. .MONDAY NIGHT...South wind 15 to 20 knots. Partly cloudy. Waves 3 to 4 feet. $$ LMZ645-191600- North Point Light to Wind Point WI- 510 AM CDT Sun Apr 19 2026 .TODAY...West wind 10 to 15 knots veering northwest with gusts to around 20 knots late in the afternoon. Chance of sprinkles late in the morning. Chance of showers early in the afternoon, then chance of sprinkles late in the afternoon. Waves around 1 foot. .TONIGHT...North wind 10 to 15 knots easing to 5 to 10 knots late in the evening, then becoming northeast 10 to 15 knots after midnight easing to 5 to 10 knots early in the morning. Partly cloudy. Waves 1 to 2 feet. .MONDAY...East wind 5 to 10 knots veering southeast late in the morning, then rising to 10 to 15 knots in the afternoon. Sunny. Waves 1 to 2 feet. .MONDAY NIGHT...Southeast wind 15 to 20 knots veering south early in the morning. Mostly cloudy through around midnight then becoming partly cloudy. Waves 3 to 4 feet. $$ LMZ646-191600- Wind Point WI to Winthrop Harbor IL- 510 AM CDT Sun Apr 19 2026 .TODAY...West wind 10 to 15 knots veering northwest with gusts to around 20 knots late in the afternoon. Chance of sprinkles late in the morning. Chance of showers early in the afternoon, then chance of sprinkles late in the afternoon. Waves around 1 foot. .TONIGHT...North wind 10 to 15 knots easing to 5 to 10 knots late in the evening, then becoming north 5 to 10 knots after midnight veering northeast early in the morning. Partly cloudy. Waves 1 to 2 feet. .MONDAY...Northeast wind 5 to 10 knots veering southeast late in the morning, then rising to 10 to 15 knots in the afternoon. Sunny. Waves 1 to 2 feet. .MONDAY NIGHT...Southeast wind 10 to 15 knots becoming south 15 to 20 knots in the late evening and overnight. Mostly cloudy through around midnight then becoming partly cloudy. Waves 1 to 3 feet building to 3 to 4 feet in the late evening and overnight. $$ See Lake Michigan Open Waters Forecast for Tuesday through Thursday.