Nearshore Marine Forecast
Issued by NWS Milwaukee/Sullivan, WI
Issued by NWS Milwaukee/Sullivan, WI
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385 FZUS53 KMKX 181805 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 105 PM CDT Mon Aug 18 2025 For waters within five nautical miles of shore on Lake Michigan LMZ643-182200- Sheboygan to Port Washington WI- 105 PM CDT Mon Aug 18 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM CDT THIS AFTERNOON... ...SEVERE THUNDERSTORM WATCH 599 IN EFFECT UNTIL 6 PM CDT THIS EVENING... .REST OF TODAY...Southeast wind 15 to 20 knots. Showers early in the afternoon. Chance of thunderstorms through the day. Showers likely late in the afternoon. Waves 4 to 6 feet. .TONIGHT...Southeast wind 10 to 15 knots veering south after midnight, then becoming southwest 5 to 10 knots early in the morning. Showers likely through around midnight. Chance of thunderstorms through the night. Slight chance of showers after midnight. Waves 3 to 4 feet. .TUESDAY...Northwest wind 10 to 15 knots veering north late in the afternoon. Patchy fog in the morning. slight chance of showers in the morning, then chance of showers and slight chance of thunderstorms in the afternoon. Waves 2 to 4 feet subsiding to 1 to 2 feet in the late morning and afternoon. .TUESDAY NIGHT...North wind 10 to 15 knots. Partly cloudy. Waves 1 to 2 feet building to 2 to 4 feet after midnight. $$ LMZ644-182200- Port Washington to North Point Light WI- 105 PM CDT Mon Aug 18 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM CDT THIS AFTERNOON... ...SEVERE THUNDERSTORM WATCH 599 IN EFFECT UNTIL 6 PM CDT THIS EVENING... .REST OF TODAY...Southeast wind 15 to 20 knots. Showers early in the afternoon. Chance of thunderstorms through the day. Showers likely late in the afternoon. Waves 4 to 6 feet subsiding to 3 to 5 feet late in the afternoon. .TONIGHT...Southeast wind 10 to 15 knots veering south after midnight, then becoming southwest 5 to 10 knots early in the morning. Showers and thunderstorms likely through around midnight, then chance of showers and thunderstorms after midnight. Waves 3 to 4 feet subsiding to 1 to 3 feet after midnight. .TUESDAY...Northwest wind 10 to 15 knots veering north late in the afternoon. Slight chance of showers in the morning. Slight chance of thunderstorms through the day. Chance of showers in the afternoon. Waves 1 to 2 feet. .TUESDAY NIGHT...North wind 10 to 15 knots. Partly cloudy. Waves 1 to 2 feet building to 3 to 4 feet after midnight. $$ LMZ645-182200- North Point Light to Wind Point WI- 105 PM CDT Mon Aug 18 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM CDT THIS AFTERNOON... ...SEVERE THUNDERSTORM WATCH 599 IN EFFECT UNTIL 6 PM CDT THIS EVENING... .REST OF TODAY...Southeast wind 15 to 20 knots easing to 10 to 15 knots late in the afternoon. Showers likely and a chance of thunderstorms. Waves 3 to 4 feet. .TONIGHT...Southeast wind 10 to 15 knots veering southwest early in the morning. Showers and thunderstorms likely through around midnight, then chance of showers and thunderstorms after midnight. Waves 2 to 4 feet subsiding to 1 to 2 feet in the late evening and overnight. .TUESDAY...West wind 10 to 15 knots veering north late in the afternoon. Slight chance of showers in the morning. Slight chance of thunderstorms through the day. Chance of showers in the afternoon. Waves 1 to 2 feet. .TUESDAY NIGHT...North wind 10 to 15 knots rising to 15 to 20 knots early in the morning. Partly cloudy. Waves 1 to 2 feet building to 3 to 4 feet after midnight. $$ LMZ646-182200- Wind Point WI to Winthrop Harbor IL- 105 PM CDT Mon Aug 18 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM CDT THIS AFTERNOON... ...SEVERE THUNDERSTORM WATCH 599 IN EFFECT UNTIL 6 PM CDT THIS EVENING... .REST OF TODAY...Southeast wind 10 to 15 knots. Gusts up to 20 knots. Showers likely and a chance of thunderstorms. Waves 3 to 4 feet. .TONIGHT...Southeast wind 10 to 15 knots veering southwest early in the morning. Showers likely through around midnight. Chance of thunderstorms through the night. Chance of showers after midnight. Waves 2 to 4 feet subsiding to 1 to 2 feet in the late evening and overnight. .TUESDAY...West wind 10 to 15 knots veering north late in the afternoon. Slight chance of showers and thunderstorms in the morning, then chance of showers and thunderstorms in the afternoon. Waves 1 to 2 feet. .TUESDAY NIGHT...North wind 10 to 15 knots rising to 15 to 20 knots early in the morning. Partly cloudy. Waves 1 to 2 feet building to 3 to 4 feet after midnight. $$ See Lake Michigan Open Waters Forecast for Wednesday through Friday.