FZUS53 KMKX 182010 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 310 PM CDT Mon May 18 2026 For waters within five nautical miles of shore on Lake Michigan LMZ643-190900- Sheboygan to Port Washington WI- 310 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .THROUGH EARLY EVENING...South wind 10 to 15 knots. Partly sunny. Waves 3 to 4 feet. .TONIGHT...South wind 10 to 15 knots rising to 15 to 20 knots late in the evening, then becoming south 15 to 20 knots after midnight. Chance of showers and thunderstorms in the late evening and overnight. patchy fog after midnight. Waves 3 to 4 feet building to 4 to 6 feet early in the morning. .TUESDAY...South wind 15 to 20 knots veering west late in the afternoon. Gusts up to 25 knots. Patchy fog in the morning. slight chance of thunderstorms in the morning. Chance of showers through the day. Waves 4 to 6 feet subsiding to 3 to 4 feet in the late morning and afternoon. .TUESDAY NIGHT...Northwest wind 15 to 20 knots easing to 10 to 15 knots with gusts to around 20 knots late in the evening, then becoming northwest 10 to 15 knots with gusts to around 20 knots after midnight veering north early in the morning. Partly cloudy. Waves 2 to 4 feet subsiding to 1 to 2 feet in the late evening and overnight. .WEDNESDAY...North wind 10 to 15 knots veering northeast late in the afternoon. Mostly sunny. Waves 1 to 2 feet. $$ LMZ644-190900- Port Washington to North Point Light WI- 310 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY AFTERNOON... .THROUGH EARLY EVENING...South wind 5 to 10 knots rising to 10 to 15 knots late in the afternoon. Partly sunny. Waves 2 to 4 feet. .TONIGHT...South wind 10 to 15 knots rising to 15 to 20 knots late in the evening, then becoming south 15 to 20 knots after midnight. Chance of showers and thunderstorms in the late evening and overnight. Waves 1 to 3 feet building to 3 to 4 feet in the late evening and overnight. .TUESDAY...South wind 15 to 20 knots veering west late in the afternoon. Gusts up to 25 knots. Slight chance of thunderstorms in the morning. Chance of showers through the day. Waves 3 to 4 feet subsiding to 1 to 2 feet late in the afternoon. .TUESDAY NIGHT...Northwest wind 15 to 20 knots easing to 10 to 15 knots late in the evening, then becoming northwest 10 to 15 knots with gusts to around 20 knots after midnight veering north early in the morning. Partly cloudy. Waves 1 to 2 feet. .WEDNESDAY...North wind 10 to 15 knots veering northeast late in the afternoon. Mostly sunny. Waves 1 to 2 feet building to 2 to 4 feet in the afternoon. $$ LMZ645-190900- North Point Light to Wind Point WI- 310 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY AFTERNOON... .THROUGH EARLY EVENING...South wind 10 to 15 knots. Partly sunny. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon. .TONIGHT...South wind 10 to 15 knots rising to 15 to 20 knots. Slight chance of showers and thunderstorms in the evening, then chance of showers and thunderstorms in the late evening and overnight. Waves 1 to 2 feet building to 2 to 4 feet in the late evening and overnight. .TUESDAY...Southwest wind 15 to 20 knots veering west late in the afternoon. Gusts up to 25 knots. Slight chance of showers in the morning. Slight chance of thunderstorms through the day. Chance of showers in the afternoon. 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 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. $$ LMZ646-190900- Wind Point WI to Winthrop Harbor IL- 310 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY AFTERNOON... .THROUGH EARLY EVENING...South wind 5 to 10 knots rising to 10 to 15 knots late in the afternoon. Mostly cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon. .TONIGHT...South wind 10 to 15 knots rising to 15 to 20 knots after midnight, then becoming south 15 to 20 knots early in the morning. Slight chance of showers and thunderstorms in the evening, then chance of showers and thunderstorms in the late evening and overnight. Waves 1 to 3 feet building to 2 to 4 feet in the late evening and overnight. .TUESDAY...South wind 15 to 20 knots veering southwest late in the morning, then becoming southwest 15 to 20 knots early in the afternoon becoming west 10 to 15 knots late in the afternoon. Gusts up to 25 knots. Slight chance of showers in the morning. Slight chance of thunderstorms through the day. Chance of showers in the afternoon. Waves 2 to 4 feet subsiding to 1 to 2 feet late in the afternoon. .TUESDAY NIGHT...Northwest wind 10 to 15 knots with gusts to around 20 knots veering north early in the morning. Partly cloudy. Waves 1 to 2 feet. .WEDNESDAY...North wind 10 to 15 knots veering northeast late in the afternoon. Mostly sunny. Waves 2 to 4 feet. $$ See Lake Michigan Open Waters Forecast for Thursday through Saturday.