FZUS53 KMKX 190010 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 710 PM CDT Mon May 18 2026 For waters within five nautical miles of shore on Lake Michigan LMZ643-190400- Sheboygan to Port Washington WI- 710 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .TONIGHT...South wind 10 to 15 knots becoming south 10 to 15 knots with gusts to around 20 knots late in the evening, then rising to 15 to 20 knots after midnight. Patchy fog in the evening. Patchy fog after midnight. slight chance of showers through around midnight. Rain showers likely and a chance of thunderstorms 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. chance of showers and slight chance of thunderstorms 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 building to 2 to 4 feet late in the afternoon. $$ LMZ644-190400- Port Washington to North Point Light WI- 710 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT TUESDAY THROUGH TUESDAY AFTERNOON... .TONIGHT...South wind 10 to 15 knots becoming south 10 to 15 knots with gusts to around 20 knots in the late evening and overnight. Slight chance of showers through around midnight, then showers likely and a chance of thunderstorms after midnight. patchy fog early in the morning. Waves 1 to 3 feet building to 3 to 4 feet in the late evening and overnight. .TUESDAY...Southwest wind 10 to 15 knots rising to 15 to 20 knots late in the morning, then veering west early in the afternoon becoming west 15 to 20 knots late in the afternoon. Gusts up to 25 knots. Chance of showers and slight chance of thunderstorms through the day. Waves 3 to 4 feet subsiding to 1 to 2 feet late in the afternoon. .TUESDAY NIGHT...Northwest wind 15 to 20 knots easing to 10 to 15 knots late in the evening, then becoming northwest 10 to 15 knots with gusts to around 20 knots after midnight veering north early in the morning. Partly cloudy. Waves 1 to 2 feet. .WEDNESDAY...North wind 10 to 15 knots veering northeast late in the afternoon. Mostly sunny. Waves 1 to 2 feet building to 2 to 4 feet in the afternoon. $$ LMZ645-190400- North Point Light to Wind Point WI- 710 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT TUESDAY THROUGH TUESDAY AFTERNOON... .TONIGHT...South wind 10 to 15 knots becoming south 10 to 15 knots with gusts to around 20 knots in the late evening and early morning, then rising to 15 to 20 knots early in the morning. Slight chance of showers through around midnight. Rain showers likely and a chance of thunderstorms after midnight. patchy fog early in the morning. 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 early in the afternoon, then easing to 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. $$ LMZ646-190400- Wind Point WI to Winthrop Harbor IL- 710 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT TUESDAY THROUGH TUESDAY AFTERNOON... .TONIGHT...South wind 10 to 15 knots becoming south 10 to 15 knots with gusts to around 20 knots in the late evening and overnight. Slight chance of showers through around midnight. Rain showers likely and a chance of thunderstorms after midnight. patchy fog early in the morning. Waves 1 to 3 feet building to 2 to 4 feet in the late evening and overnight. .TUESDAY...Southwest wind 15 to 20 knots becoming west 10 to 15 knots late in the afternoon. Gusts up to 25 knots. Slight chance of showers in the morning. Slight chance of thunderstorms through the day. Chance of showers in the afternoon. Waves 2 to 4 feet subsiding to 1 to 2 feet late in the afternoon. .TUESDAY NIGHT...Northwest wind 10 to 15 knots with gusts to around 20 knots veering north early in the morning. Partly cloudy. Waves 1 to 2 feet. .WEDNESDAY...North wind 10 to 15 knots veering northeast late in the afternoon. Mostly sunny. Waves 2 to 4 feet. $$ See Lake Michigan Open Waters Forecast for Thursday through Saturday.