FZUS53 KMKX 190410 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 1110 PM CDT Mon May 18 2026 For waters within five nautical miles of shore on Lake Michigan LMZ643-191000- Sheboygan to Port Washington WI- 1110 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT TUESDAY THROUGH TUESDAY AFTERNOON... .REST OF TONIGHT...South wind 15 to 20 knots becoming 15 to 25 knots early in the morning. Patchy fog through the night. scattered showers and thunderstorms after midnight. Rain showers likely and slight chance of thunderstorms early in the morning. Waves 3 to 4 feet. .TUESDAY...South wind 15 to 25 knots veering southwest 15 to 20 knots late in the morning, then veering west early in the afternoon becoming west 15 to 20 knots late in the afternoon. Patchy fog in the morning. slight chance of thunderstorms in the morning. Chance of showers through the day. Waves 3 to 4 feet. .TUESDAY 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 veering north early in the morning. Partly cloudy. Waves 1 to 2 feet. .WEDNESDAY...North wind 10 to 15 knots veering northeast late in the afternoon. Mostly sunny. Waves 1 to 2 feet. $$ LMZ644-191000- Port Washington to North Point Light WI- 1110 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT TUESDAY THROUGH TUESDAY AFTERNOON... .REST OF TONIGHT...South wind 15 to 20 knots becoming 15 to 25 knots early in the morning. Scattered showers and thunderstorms after midnight, then showers likely and slight chance of thunderstorms early in the morning. patchy fog early in the morning. Waves 2 to 4 feet. .TUESDAY...Southwest wind 15 to 25 knots easing to 10 to 20 knots late in the morning, then veering west 15 to 20 knots in the afternoon. Slight chance of thunderstorms in the morning. Chance of showers through the day. Waves 2 to 4 feet subsiding to 1 to 2 feet in the afternoon. .TUESDAY NIGHT...Northwest wind 15 to 20 knots easing to 10 to 15 knots late in the evening, then rising to 15 to 20 knots after midnight becoming north 10 to 15 knots early in the morning. Partly cloudy. Waves 1 to 2 feet. .WEDNESDAY...North wind 10 to 15 knots veering northeast late in the afternoon. Mostly sunny. Waves 1 to 2 feet building to 2 to 4 feet in the afternoon. $$ LMZ645-191000- North Point Light to Wind Point WI- 1110 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT TUESDAY THROUGH TUESDAY AFTERNOON... .REST OF TONIGHT...South wind 15 to 20 knots becoming 15 to 25 knots early in the morning. Scattered showers and thunderstorms after midnight, then showers likely and slight chance of thunderstorms early in the morning. patchy fog early in the morning. Waves 2 to 4 feet. .TUESDAY...Southwest wind 15 to 25 knots easing to 10 to 20 knots late in the morning, then veering west 15 to 20 knots in the afternoon. Chance of showers and slight chance of thunderstorms through the day. Waves 2 to 4 feet subsiding to 1 to 2 feet late in the afternoon. .TUESDAY NIGHT...Northwest wind 10 to 15 knots with gusts to around 20 knots becoming northwest 10 to 15 knots late in the evening, then rising to 15 to 20 knots after midnight veering north early in the morning. Partly cloudy. Waves 1 to 2 feet. .WEDNESDAY...North wind 10 to 15 knots veering northeast late in the afternoon. Mostly sunny. Waves 2 to 4 feet. $$ LMZ646-191000- Wind Point WI to Winthrop Harbor IL- 1110 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT TUESDAY THROUGH TUESDAY AFTERNOON... .REST OF TONIGHT...South wind 15 to 20 knots. Scattered showers and thunderstorms after midnight, then showers likely and slight chance of thunderstorms early in the morning. patchy fog early in the morning. Waves 2 to 4 feet. .TUESDAY...Southwest wind 15 to 20 knots becoming west 10 to 15 knots late in the afternoon. Gusts up to 25 knots. Chance of showers and slight chance of thunderstorms through the day. Waves 2 to 4 feet subsiding to 1 to 2 feet in the afternoon. .TUESDAY NIGHT...Northwest wind 10 to 15 knots with gusts to around 20 knots veering north early in the morning. Partly cloudy. Waves 1 to 2 feet. .WEDNESDAY...North wind 10 to 15 knots veering northeast late in the afternoon. Mostly sunny. Waves 2 to 4 feet. $$ See Lake Michigan Open Waters Forecast for Thursday through Saturday.