479 FZUS53 KDTX 180721 NSHDTX Nearshore Marine Forecast for Michigan National Weather Service Detroit/Pontiac MI 321 AM EDT Mon May 18 2026 For waters within five nautical miles of shore Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. LHZ422-181530- Inner Saginaw Bay SW of Point Au Gres to Bay Port MI- 321 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING THROUGH THIS EVENING... .TODAY...South winds 15 to 20 knots becoming southwest 20 to 25 knots in the afternoon. Mostly sunny in the morning, then partly cloudy with showers likely and a chance of thunderstorms in the afternoon. Waves 2 to 4 feet building to 3 to 5 feet in the late morning and afternoon. Waves occasionally around 7 feet. .TONIGHT...Southwest winds 20 to 25 knots diminishing to 15 to 20 knots in the late evening and overnight. Mostly cloudy. Showers likely and a chance of thunderstorms early in the evening, then a chance of showers and thunderstorms in the late evening and overnight. Waves 2 to 4 feet. .TUESDAY...Southwest winds 20 to 25 knots increasing to 30 knots in the late morning and afternoon. Mostly cloudy early in the morning becoming partly cloudy. A chance of showers in the late morning and early afternoon. Light showers likely and a chance of thunderstorms early in the afternoon. Waves 3 to 5 feet. Waves occasionally around 6 feet. .TUESDAY NIGHT...West winds 20 to 25 knots with gusts to 30 knots becoming northwest 15 to 20 knots after midnight. Mostly cloudy until early morning becoming partly cloudy. Light showers likely and a chance of thunderstorms early in the evening. Waves 3 to 5 feet. Waves occasionally around 7 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ421-181530- Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay- 321 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING THROUGH THIS EVENING... .TODAY...Southwest winds 15 to 20 knots. Partly cloudy. A chance of showers and thunderstorms in the afternoon. Waves 2 to 4 feet. .TONIGHT...Southwest winds 15 to 20 knots. Mostly cloudy. Rain showers likely in the evening. A chance of thunderstorms. A chance of showers after midnight. Waves 3 to 5 feet. Waves occasionally around 7 feet. .TUESDAY...Southwest winds 20 to 25 knots. Gusts to 30 knots in the late morning and afternoon. Mostly cloudy early in the morning becoming partly cloudy. A chance of showers in the late morning and early afternoon. Light showers likely early in the afternoon. Waves 4 to 6 feet. Waves occasionally around 8 feet. .TUESDAY NIGHT...West winds 20 to 25 knots with gusts to 30 knots becoming northwest 15 to 20 knots in the late evening and overnight. Mostly cloudy until early morning becoming partly cloudy. Light showers likely early in the evening. Waves 3 to 5 feet. Waves occasionally around 7 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ441-181530- Port Austin to Harbor Beach MI- 321 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING THROUGH THIS EVENING... .TODAY...South winds 10 to 15 knots becoming southwest 15 to 20 knots in the afternoon. Partly cloudy in the morning, then mostly sunny with showers likely and a chance of thunderstorms in the afternoon. Waves 2 to 4 feet. .TONIGHT...Southwest winds 15 to 20 knots. Mostly cloudy. Rain showers likely in the evening. A chance of thunderstorms. A chance of showers after midnight. Waves 2 to 4 feet. .TUESDAY...Southwest winds 15 to 20 knots increasing to 20 to 25 knots with gusts to 30 knots in the late morning and afternoon. Mostly cloudy early in the morning becoming partly cloudy. A chance of showers in the late morning and early afternoon. Light showers likely early in the afternoon. Waves 1 to 3 feet building to 3 to 5 feet in the late morning and afternoon. Waves occasionally around 7 feet. .TUESDAY NIGHT...West winds 15 to 20 knots veering to the northwest in the late evening and early morning, then becoming north 10 to 15 knots after midnight. Mostly cloudy. Light showers likely and a chance of thunderstorms early in the evening. Waves 3 to 5 feet. Waves occasionally around 7 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ442-181530- Harbor Beach to Port Sanilac MI- 321 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING THROUGH THIS EVENING... .TODAY...South winds 10 to 15 knots increasing to 15 to 20 knots in the afternoon. Partly cloudy in the morning, then mostly sunny with a chance of thunderstorms and a slight chance of showers in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet in the late morning and afternoon. .TONIGHT...Southwest winds 15 to 20 knots diminishing to 10 to 15 knots in the late evening and overnight. Mostly cloudy until early morning becoming partly cloudy. Showers and thunderstorms likely in the evening, then a chance of showers and thunderstorms after midnight. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. .TUESDAY...Southwest winds 15 to 20 knots. Gusts to 30 knots in the late morning and afternoon. Mostly cloudy early in the morning becoming partly cloudy. A chance of showers in the late morning and early afternoon. Light showers likely and a chance of thunderstorms early in the afternoon. Waves 2 to 4 feet building to 3 to 5 feet in the late morning and afternoon. Waves occasionally around 7 feet. .TUESDAY NIGHT...West winds 15 to 20 knots veering to the northwest in the late evening and early morning, then becoming north 10 to 15 knots after midnight. Mostly cloudy. A chance of showers and thunderstorms early in the evening, then a chance of showers in the late evening and early morning. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ443-181530- Port Sanilac to Port Huron MI- 321 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING THROUGH THIS EVENING... .TODAY...South winds 10 to 15 knots increasing to 15 to 20 knots in the late morning and afternoon. Mostly sunny. A chance of showers and thunderstorms in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet in the afternoon. .TONIGHT...Southwest winds 15 to 20 knots. Mostly cloudy until early morning becoming partly cloudy. A chance of showers and thunderstorms until early morning, then a chance of showers after midnight. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. .TUESDAY...Southwest winds 15 to 20 knots increasing to 20 to 25 knots early in the afternoon. Partly cloudy until late afternoon. A chance of showers in the late morning and early afternoon. Rain showers and a chance of thunderstorms early in the afternoon. Waves 2 to 4 feet. .TUESDAY NIGHT...West winds 15 to 20 knots veering to the north after midnight. Mostly cloudy. A chance of showers and thunderstorms until early morning. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and early morning, then building to 2 to 4 feet after midnight. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LEZ444-181530- Michigan Waters of Lake Erie from Detroit River to North Cape MI- 321 AM EDT Mon May 18 2026 .TODAY...South winds 10 to 15 knots becoming southwest 15 to 20 knots in the afternoon. Sunny. A slight chance of showers and thunderstorms in the afternoon. Waves 1 to 3 feet. .TONIGHT...Southwest winds 15 to 20 knots diminishing to 10 to 15 knots in the late evening and overnight. Mostly cloudy with a chance of showers and thunderstorms until early morning, then partly cloudy with a chance of showers and a slight chance of thunderstorms after midnight. Waves 1 to 3 feet. .TUESDAY...Southwest winds 15 to 20 knots increasing to 20 to 25 knots early in the afternoon. Partly cloudy becoming mostly sunny in the late morning and early afternoon becoming partly cloudy. A chance of showers in the late morning and early afternoon. Light showers likely and a chance of thunderstorms early in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet in the late morning and afternoon. A Small Craft Advisory may be needed. .TUESDAY NIGHT...Southwest winds 15 to 20 knots becoming west 10 to 15 knots in the late evening and overnight. Light showers and a chance of thunderstorms until early morning, then a chance of showers after midnight. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. See Lake Erie Open Lake Forecast for days 3 through 5. The water temperature at Belle Isle is missing. $$ MR You can obtain your latest National Weather Service forecasts online a www.weather.gov/greatlakes  642 FZUS53 KAPX 180727 NSHAPX Nearshore Marine Forecast National Weather Service Gaylord MI 327 AM EDT Mon May 18 2026 For waters within five nautical miles of shore on Lakes Huron... Michigan and Superior. Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. LSZ321-181530- Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI- 327 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON EDT TODAY... .TODAY...Southeast wind 10 to 15 knots gusting to 25 knots, becoming southwest in the afternoon. Chance of thunderstorms early in the morning. Chance of showers through the day. Waves 2 to 4 feet subsiding to 2 feet or less in the afternoon. .TONIGHT...South wind 10 to 15 knots. Rain showers likely and a chance of thunderstorms. Waves 2 feet or less. .TUESDAY...Southwest wind 15 to 25 knots. Rain showers. Waves 4 to 7 feet. .TUESDAY NIGHT...Northwest wind 15 to 25 knots. Mostly cloudy. Waves 5 to 8 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LSZ322-181530- St. Marys River Point Iroquois to E. Potagannissing Bay- 327 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON EDT TODAY... .TODAY...Southeast wind 10 to 15 knots gusting to 25 knots, becoming southwest 5 to 10 knots in the afternoon. Slight chance of thunderstorms early in the morning. Chance of showers through the day. Chance of thunderstorms in the morning. .TONIGHT...South wind 5 to 10 knots. Rain showers likely and a chance of thunderstorms. .TUESDAY...Southwest wind 15 to 20 knots. Rain showers. .TUESDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Winds higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ341-181530- Seul Choix Point to 5NM West of Mackinac Bridge- 327 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...Southeast wind 10 to 15 knots gusting to 25 knots, becoming southwest early in the evening. Chance of thunderstorms early in the morning. Chance of showers through the day. Waves 2 to 3 feet building to 3 to 5 feet in the morning. .TONIGHT...South wind 15 to 20 knots. Chance of showers and thunderstorms. Waves 4 to 6 feet. .TUESDAY...Southwest wind 15 to 25 knots. Rain showers. Waves 5 to 8 feet. .TUESDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Waves 3 to 5 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ342-181530- Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay- 327 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...Southeast wind 10 to 15 knots gusting to 25 knots, becoming southwest in the afternoon. Slight chance of thunderstorms early in the morning. Chance of showers through the day. Chance of thunderstorms in the morning. Waves 2 feet or less building to 2 to 3 feet in the morning. .TONIGHT...South wind 15 to 20 knots. Rain showers likely and a chance of thunderstorms. Waves 2 to 3 feet. .TUESDAY...Southwest wind 15 to 25 knots. Chance of showers. Waves 4 to 6 feet. .TUESDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ323-181530- Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI- 327 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...Southwest wind 10 to 15 knots. Gusts up to 30 knots. Chance of thunderstorms early in the morning. Chance of showers through the day. Slight chance of thunderstorms in the morning. Waves 2 to 3 feet. .TONIGHT...South wind 15 to 20 knots. Chance of showers and thunderstorms. Waves 2 to 3 feet. .TUESDAY...Southwest wind 10 to 20 knots. Rain showers likely. Waves 2 to 4 feet. .TUESDAY NIGHT...Northwest wind 15 to 20 knots. Mostly cloudy. Waves 2 to 4 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ344-345-181530- Sleeping Bear Point to Grand Traverse Light MI- Point Betsie to Sleeping Bear Point MI- 327 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...Southwest wind 15 to 25 knots. Chance of thunderstorms early in the morning. Chance of showers through the day. Slight chance of thunderstorms in the afternoon. Waves 2 to 3 feet building to 2 to 4 feet in the morning. .TONIGHT...South wind 15 to 20 knots. Rain showers likely and a chance of thunderstorms. Waves 3 to 5 feet. .TUESDAY...Southwest wind 15 to 25 knots. Rain showers likely. Waves 4 to 7 feet. .TUESDAY NIGHT...Northwest wind 10 to 15 knots. Mostly cloudy. Waves 3 to 5 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ346-181530- Manistee to Point Betsie MI- 327 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...Southwest wind 15 to 25 knots becoming south 5 to 15 knots early in the evening. Chance of thunderstorms early in the morning. Chance of showers through the day. Slight chance of thunderstorms in the afternoon. Waves 2 to 4 feet building to 3 to 5 feet in the morning. .TONIGHT...South wind 10 to 20 knots. Rain showers likely and a chance of thunderstorms. Waves 4 to 6 feet. .TUESDAY...Southwest wind 15 to 25 knots. Rain showers likely. Waves 5 to 8 feet. .TUESDAY NIGHT...North wind 10 to 15 knots. Mostly cloudy. Waves 4 to 6 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ345-181530- Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island- 327 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EDT EARLY THIS MORNING... .TODAY...Southeast wind 10 to 15 knots gusting to 25 knots, becoming west in the afternoon. Slight chance of showers and thunderstorms early in the morning, then chance of showers and thunderstorms in the morning. Waves 2 to 3 feet. .TONIGHT...South wind 5 to 10 knots. Rain showers likely and a chance of thunderstorms. Waves 2 feet or less. .TUESDAY...Southwest wind 10 to 20 knots. Rain showers. Waves 2 to 4 feet. .TUESDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ346-181530- St Ignace to False Detour Channel- 327 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EDT EARLY THIS MORNING... .TODAY...Southeast wind 10 to 15 knots becoming southwest early in the evening. Slight chance of thunderstorms early in the morning. Chance of showers through the day. Chance of thunderstorms in the morning. Waves 2 to 4 feet. .TONIGHT...South wind 10 to 15 knots. Chance of showers and thunderstorms. Waves 2 to 3 feet. .TUESDAY...Southwest wind 15 to 25 knots. Rain showers. Waves 4 to 6 feet. .TUESDAY NIGHT...Northwest wind 15 to 25 knots. Mostly cloudy. Waves 4 to 6 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ347-181530- 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island- 327 AM EDT Mon May 18 2026 .TODAY...Southeast wind 10 to 15 knots becoming southwest in the afternoon. Slight chance of showers early in the morning, then chance of showers and slight chance of thunderstorms in the morning. Rain showers likely and a chance of thunderstorms in the afternoon. Waves 2 to 4 feet subsiding to 2 to 3 feet in the afternoon. .TONIGHT...South wind 5 to 10 knots. Chance of showers and thunderstorms. Waves 2 feet or less. .TUESDAY...Southwest wind 10 to 20 knots. Rain showers. Waves 3 to 5 feet. .TUESDAY NIGHT...Northwest wind 15 to 25 knots. Mostly cloudy. Waves 5 to 8 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ348-181530- Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary- 327 AM EDT Mon May 18 2026 .TODAY...Southeast wind 5 to 10 knots becoming south 10 to 20 knots in the morning. Slight chance of showers early in the morning. Rain showers likely and a chance of thunderstorms in the afternoon. Waves 2 to 3 feet building to 3 to 5 feet in the morning. .TONIGHT...South wind 10 to 15 knots. Chance of showers and thunderstorms. Waves 2 to 4 feet. .TUESDAY...Southwest wind 10 to 20 knots. Chance of showers. Waves 3 to 5 feet. .TUESDAY NIGHT...Northwest wind 15 to 25 knots. Mostly cloudy. Waves 5 to 8 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ349-181530- Sturgeon Pt to Alabaster MI- 327 AM EDT Mon May 18 2026 .TODAY...South wind 10 to 20 knots. Chance of showers and thunderstorms in the afternoon. Waves 2 to 4 feet. .TONIGHT...Southwest wind 10 to 20 knots. Rain showers likely and slight chance of thunderstorms. Waves 2 to 4 feet. .TUESDAY...Southwest wind 15 to 25 knots. Chance of showers. Waves 4 to 6 feet. .TUESDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ SJC  188 FZUS53 KGRR 180736 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 336 AM EDT Mon May 18 2026 For waters within five nautical miles of shore on Lake Michigan LMZ849-180845- Pentwater to Manistee MI- 336 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .REST OF TONIGHT...South winds to 30 knots. Partly cloudy with a chance of rain showers and a slight chance of thunderstorms. Waves 3 to 5 feet. .MONDAY...South winds to 30 knots. Rain showers likely and a chance of thunderstorms. Waves 4 to 6 feet. .MONDAY NIGHT...South winds to 30 knots. Mostly cloudy with a chance of showers and thunderstorms. Waves 5 to 7 feet. .TUESDAY...South winds to 30 knots veering southwest early in the afternoon. Mostly cloudy with a chance of thunderstorms and a slight chance of rain showers. Waves 6 to 8 feet. .TUESDAY NIGHT...Northwest winds 15 to 25 knots veering north after midnight. Partly cloudy. Waves 5 to 7 feet. .WEDNESDAY...North winds 15 to 20 knots. Mostly sunny. Waves 2 to 3 feet. .THURSDAY...Northeast winds 5 to 10 knots backing north 10 to 15 knots early in the afternoon. Mostly sunny. Waves around 1 foot. .FRIDAY...East winds 10 to 15 knots. Mostly cloudy. Waves 1 foot or less. $$ LMZ848-180845- Whitehall to Pentwater MI- 336 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .REST OF TONIGHT...South winds to 30 knots. Mostly cloudy with a slight chance of showers and thunderstorms. Waves 3 to 5 feet. .MONDAY...South winds to 30 knots. Rain showers likely and a chance of thunderstorms. Waves 4 to 6 feet. .MONDAY NIGHT...South winds to 30 knots. Rain showers and a chance of thunderstorms. Waves 5 to 7 feet. .TUESDAY...South winds to 30 knots veering southwest early in the afternoon. Rain showers and a chance of thunderstorms. Waves 6 to 9 feet. .TUESDAY NIGHT...Northwest winds 20 to 25 knots veering north 15 to 20 knots after midnight. Partly cloudy. Waves 5 to 7 feet. .WEDNESDAY...North winds 15 to 25 knots. Mostly sunny. Waves 2 to 4 feet. .THURSDAY...Northeast winds 10 to 15 knots backing north early in the afternoon. Mostly sunny. Waves around 1 foot. .FRIDAY...East winds 10 to 15 knots. Mostly cloudy. Waves around 1 foot. $$ LMZ847-180845- Grand Haven to Whitehall MI- 336 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .REST OF TONIGHT...South winds to 30 knots. Mostly cloudy. Waves 3 to 5 feet. .MONDAY...South winds to 30 knots. Rain showers likely and a chance of thunderstorms. Waves 4 to 6 feet. .MONDAY NIGHT...South winds to 30 knots. Mostly cloudy with a chance of showers and thunderstorms. Waves 5 to 7 feet. .TUESDAY...South winds to 30 knots veering southwest early in the afternoon. Rain showers likely and a chance of thunderstorms. Waves 6 to 8 feet. .TUESDAY NIGHT...Northwest winds 20 to 25 knots veering north after midnight. Partly cloudy. Waves 4 to 6 feet. .WEDNESDAY...North winds 15 to 25 knots. Mostly sunny. Waves 2 to 4 feet. .THURSDAY...East winds 10 to 15 knots backing north early in the afternoon. Mostly sunny. Waves 1 foot or less. .FRIDAY...East winds 10 to 20 knots. Mostly cloudy. Waves around 1 foot. $$ LMZ846-180845- Holland to Grand Haven MI- 336 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .REST OF TONIGHT...South winds 20 to 25 knots. Partly cloudy. Waves 2 to 4 feet. .MONDAY...South winds to 30 knots. Rain showers likely and a chance of thunderstorms. Waves 4 to 6 feet. .MONDAY NIGHT...South winds to 30 knots. Rain showers likely and a chance of thunderstorms. Waves 4 to 6 feet. .TUESDAY...South winds to 30 knots veering southwest 20 to 25 knots early in the afternoon. Rain showers likely and a chance of thunderstorms. Waves 6 to 8 feet. .TUESDAY NIGHT...Northwest winds around 20 knots. Partly cloudy. Waves 4 to 6 feet. .WEDNESDAY...North winds 15 to 25 knots. Mostly sunny. Waves 3 to 5 feet. .THURSDAY...Northeast winds 10 to 15 knots. Mostly sunny. Waves around 1 foot. .FRIDAY...East winds 15 to 20 knots. Mostly cloudy. Waves around 1 foot. $$ LMZ845-180845- South Haven to Holland MI- 336 AM EDT Mon May 18 2026 .REST OF TONIGHT...South winds 20 to 25 knots. Partly cloudy. Waves 2 to 4 feet. .MONDAY...South winds 20 to 25 knots. Rain showers likely and a chance of thunderstorms. Waves 2 to 4 feet. .MONDAY NIGHT...South winds 15 to 25 knots. Partly cloudy with a chance of showers and thunderstorms. Waves 3 to 5 feet. .TUESDAY...Southwest winds to 30 knots. Partly sunny with a chance of showers and thunderstorms. Waves 4 to 6 feet. .TUESDAY NIGHT...West winds 15 to 20 knots veering northwest in the late evening and overnight. Partly cloudy with rain showers likely and a slight chance of thunderstorms. Waves 3 to 5 feet. .WEDNESDAY...North winds 15 to 25 knots. Mostly sunny. Waves 3 to 5 feet. .THURSDAY...Northeast winds 10 to 15 knots. Mostly sunny. Waves around 1 foot. .FRIDAY...East winds 10 to 15 knots. Mostly cloudy. Waves 1 foot or less. $$ LMZ844-180845- St Joseph to South Haven MI- 336 AM EDT Mon May 18 2026 .REST OF TONIGHT...South winds 15 to 20 knots. Partly cloudy. Waves 1 to 3 feet. .MONDAY...South winds around 20 knots. Mostly cloudy with a chance of showers and thunderstorms. Waves 2 to 3 feet. .MONDAY NIGHT...South winds 15 to 25 knots. Partly cloudy with a chance of showers and thunderstorms. Waves 2 to 4 feet. .TUESDAY...Southwest winds 20 to 25 knots. Partly sunny with a chance of showers and thunderstorms. Waves 3 to 5 feet. .TUESDAY NIGHT...Northwest winds 15 to 20 knots becoming around 20 knots after midnight. Mostly cloudy with a slight chance of showers and thunderstorms. Waves 3 to 5 feet. .WEDNESDAY...North winds 15 to 20 knots. Mostly sunny. Waves 3 to 5 feet. .THURSDAY...Northeast winds 10 to 15 knots. Mostly sunny. Waves 1 to 2 feet. .FRIDAY...East winds 10 to 15 knots. Mostly cloudy with a chance of rain showers. Waves around 1 foot. $$  317 FZUS53 KIWX 180740 NSHIWX Nearshore Marine Forecast National Weather Service Northern Indiana 340 AM EDT Mon May 18 2026 For waters within five nautical miles of shore on Lake Michigan LMZ046-181415- Michigan City IN to New Buffalo MI- 340 AM EDT Mon May 18 2026 .TODAY...South winds 10 to 15 knots becoming southwest 15 to 20 knots. Gusts up to 25 knots. A chance of showers and thunderstorms this morning, then showers likely with a chance of thunderstorms this afternoon. Waves 1 to 2 feet. .TONIGHT...South winds 10 to 15 knots increasing to 15 to 20 knots. Gusts up to 25 knots. A slight chance of showers and thunderstorms in the evening. Waves 1 to 2 feet. .TUESDAY...South winds 15 to 20 knots becoming southwest 10 to 15 knots. Gusts up to 25 knots. A chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet. .TUESDAY NIGHT...West winds 10 to 15 knots becoming north. Showers likely with a chance of thunderstorms in the evening. Waves 2 to 3 feet. Winds and waves higher in and near thunderstorms. The water temperature at St. Joseph is 53 degrees and at Michigan City is 51 degrees. $$ LMZ043-181415- New Buffalo MI to St Joseph MI- 340 AM EDT Mon May 18 2026 .TODAY...South winds 10 to 15 knots becoming southwest. Gusts up to 25 knots. A chance of showers and thunderstorms this morning, then showers likely with a chance of thunderstorms this afternoon. Waves 1 to 2 feet. .TONIGHT...South winds 10 to 15 knots increasing to 15 to 20 knots. Gusts up to 25 knots. A slight chance of showers and thunderstorms in the evening. Waves 1 to 2 feet. .TUESDAY...South winds 15 to 20 knots becoming southwest 10 to 15 knots. Gusts up to 30 knots. A chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. Waves 2 to 4 feet. .TUESDAY NIGHT...West winds 10 to 15 knots becoming north. Showers likely with a chance of thunderstorms in the evening. Waves 2 to 4 feet. Winds and waves higher in and near thunderstorms. The water temperature at St. Joseph is 53 degrees and at Michigan City is 51 degrees. $$  532 FZUS51 KCLE 180744 NSHCLE Nearshore Marine Forecast National Weather Service Cleveland OH 344 AM EDT Mon May 18 2026 For waters within five nautical miles of shore Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. LEZ142>144-181415- Maumee Bay to Reno Beach OH-Reno Beach to The Islands OH- The Islands to Vermilion OH- 344 AM EDT Mon May 18 2026 .TODAY...South winds 10 to 15 knots becoming southwest 15 to 20 knots. A slight chance of showers and thunderstorms late. Waves 1 to 3 feet. .TONIGHT...Southwest winds 15 to 20 knots diminishing to 10 to 15 knots. A chance of showers and thunderstorms in the evening, then a chance of showers with a slight chance of thunderstorms overnight. Waves 1 to 3 feet subsiding to 1 foot or less. .TUESDAY...South winds 10 to 15 knots becoming southwest 15 to 20 knots. Showers and thunderstorms likely in the afternoon. Waves 1 to 3 feet. .TUESDAY NIGHT...Southwest winds 15 to 20 knots becoming west 10 to 15 knots. Showers with thunderstorms likely in the evening, then showers overnight. Waves 1 to 3 feet. Winds and waves higher in and near thunderstorms. See Lake Erie open lakes forecast for Wednesday through Friday. The water temperature off Toledo is 58 degrees, off Cleveland 54 degrees, and off Erie 55 degrees. $$ LEZ145>147-181415- Vermilion to Avon Point OH-Avon Point to Willowick OH- Willowick to Geneva-on-the Lake OH- 344 AM EDT Mon May 18 2026 .TODAY...South winds 10 to 15 knots becoming southwest. Sunny. Waves 2 feet or less. .TONIGHT...Southwest winds 10 to 15 knots. A chance of showers with a slight chance of thunderstorms. Waves 2 feet or less. .TUESDAY...South winds 10 to 15 knots becoming southwest 15 to 20 knots. A chance of showers and thunderstorms in the afternoon. Waves 1 to 3 feet. .TUESDAY NIGHT...Southwest winds 15 to 20 knots becoming west 10 to 15 knots. Showers with thunderstorms likely in the evening, then showers overnight. Waves 1 to 3 feet. Winds and waves higher in and near thunderstorms. See Lake Erie open lakes forecast for Wednesday through Friday. The water temperature off Toledo is 58 degrees, off Cleveland 54 degrees, and off Erie 55 degrees. $$ LEZ148-149-181415- Geneva-on-the-Lake to Conneaut OH-Conneaut OH to Ripley NY- 344 AM EDT Mon May 18 2026 .TODAY...South winds 10 to 15 knots becoming southwest. Sunny. Waves 2 feet or less. .TONIGHT...Southwest winds 5 to 10 knots becoming south. A slight chance of showers and thunderstorms in the evening, then a chance of showers with a slight chance of thunderstorms overnight. Waves 1 foot or less. .TUESDAY...South winds 10 to 15 knots becoming southwest. A chance of showers and thunderstorms in the afternoon. Waves 2 feet or less. .TUESDAY NIGHT...Southwest winds 10 to 15 knots becoming west. Showers with thunderstorms likely in the evening, then showers overnight. Waves 1 to 3 feet. Winds and waves higher in and near thunderstorms. See Lake Erie open lakes forecast for Wednesday through Friday. The water temperature off Toledo is 58 degrees, off Cleveland 54 degrees, and off Erie 55 degrees. $$  853 FZUS53 KDLH 180746 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 246 AM CDT Mon May 18 2026 For waters within five nautical miles of shore on Lake Superior. Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. LSZ140-181600- Grand Portage to Grand Marais MN- 246 AM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the late morning and early afternoon. Chance of rain showers and slight chance of thunderstorms early in the morning, then slight chance of rain showers late in the morning. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon. .TONIGHT...Northeast wind 15 to 20 knots. Gusts up to 25 knots. Chance of rain showers in the evening. Slight chance of thunderstorms through the night. Rain showers after midnight. Waves 1 to 3 feet building to 4 to 6 feet in the late evening and overnight. Waves occasionally to 8 feet. A small craft advisory may be needed. .TUESDAY...North wind 20 to 25 knots becoming northwest 10 to 15 knots with gusts to around 20 knots in the afternoon. Chance of rain showers in the morning. Waves 4 to 6 feet subsiding to 1 to 2 feet. Waves occasionally to 8 feet. A small craft advisory may be needed. .TUESDAY NIGHT...Northwest wind 10 to 15 knots. Gusts up to 20 knots in the evening. Mostly cloudy in the evening then becoming partly cloudy. Waves 1 to 2 feet. $$ LSZ141-181600- Grand Marais to Taconite Harbor MN- 246 AM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Northeast wind 5 to 10 knots becoming west late in the morning, then becoming southeast early in the afternoon becoming northeast late in the afternoon. Slight chance of showers and thunderstorms early in the morning. Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon. .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots after midnight. Chance of rain showers and slight chance of thunderstorms in the evening, then rain showers after midnight. Waves 1 to 3 feet building to 2 to 4 feet after midnight. .TUESDAY...North wind 5 to 10 knots becoming northwest in the afternoon. Gusts up to 20 knots. Chance of rain showers in the morning. Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon. .TUESDAY NIGHT...Northwest wind 5 to 10 knots. Gusts up to 20 knots early in the evening. Mostly cloudy in the evening then becoming partly cloudy. Waves 1 to 2 feet. $$ LSZ142-181600- Taconite Harbor to Silver Bay Harbor MN- 246 AM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...North wind 5 to 10 knots becoming northwest late in the morning, then becoming southeast early in the afternoon becoming northeast late in the afternoon. Slight chance of showers and thunderstorms early in the morning. Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon. .TONIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots. Chance of rain showers in the evening. Slight chance of thunderstorms through the night. Rain showers after midnight. Waves 1 to 2 feet building to 2 to 4 feet after midnight. A small craft advisory may be needed. .TUESDAY...Northwest wind 5 to 10 knots. Gusts up to 20 knots late in the afternoon. Chance of rain showers in the morning. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon. A small craft advisory may be needed. .TUESDAY NIGHT...Northwest wind 5 to 10 knots. Gusts up to 20 knots early in the evening. Mostly cloudy in the evening then becoming partly cloudy. Waves 1 to 2 feet. $$ LSZ143-181600- Silver Bay Harbor to Two Harbors MN-246 AM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Northeast wind 5 to 10 knots. Slight chance of showers and thunderstorms early in the morning. Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon. .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots late in the evening increasing to 25 knots, then decreasing to 20 knots early in the morning. Rain showers likely in the evening. Slight chance of thunderstorms through the night. Rain showers after midnight. Waves 1 to 2 feet building to 2 to 4 feet after midnight. A small craft advisory may be needed. .TUESDAY...North wind 5 to 10 knots becoming northwest in the late morning and afternoon. Chance of rain showers in the morning. Waves 2 to 4 feet. A small craft advisory may be needed. .TUESDAY NIGHT...Northwest wind 5 to 10 knots. Mostly cloudy in the evening then becoming partly cloudy. Waves 1 to 2 feet. $$ LSZ144-181600- Two Harbors to Duluth MN- 246 AM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Northeast wind 5 to 10 knots. Slight chance of rain showers early in the morning. Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon. .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots late in the evening increasing to 25 knots, then decreasing to 20 knots early in the morning. Rain showers likely in the evening. Slight chance of thunderstorms through the night. Rain showers after midnight. Waves 1 to 3 feet building to 2 to 4 feet after midnight. .TUESDAY...Northwest wind 10 to 15 knots. Gusts up to 20 knots in the late morning and afternoon. Chance of rain showers in the morning. Waves 2 to 4 feet. .TUESDAY NIGHT...Northwest wind 10 to 15 knots with gusts to around 20 knots easing to 5 knots after midnight. Mostly cloudy. Waves 1 to 2 feet. $$ LSZ145-181600- Duluth MN to Port Wing WI- 246 AM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Northeast wind 5 to 10 knots. Slight chance of rain showers early in the morning. Waves 2 to 4 feet subsiding to 1 to 2 feet in the afternoon. .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots late in the evening increasing to 25 knots, then decreasing to 20 knots early in the morning. Rain showers likely in the evening. Slight chance of thunderstorms through the night. Rain showers after midnight. Waves 1 to 2 feet building to 3 to 5 feet in the late evening and overnight. A small craft advisory may be needed. .TUESDAY...North wind 10 to 15 knots becoming west in the late morning and afternoon. Gusts up to 20 knots. Chance of rain showers in the morning. Waves 2 to 4 feet. .TUESDAY NIGHT...Northwest wind 10 to 15 knots with gusts to around 20 knots becoming west 5 knots after midnight. Mostly cloudy. Waves 1 to 2 feet. $$ LSZ146-181600- Port Wing to Sand Island WI- 246 AM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Northeast wind 5 to 10 knots. Slight chance of rain showers early in the morning. Waves 2 to 4 feet subsiding to 1 to 2 feet in the afternoon. .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 25 knots. Rain showers likely in the evening. Slight chance of thunderstorms through the night. Rain showers after midnight. Waves 1 to 2 feet building to 3 to 5 feet after midnight. A small craft advisory may be needed. .TUESDAY...North wind 5 to 10 knots with gusts to around 20 knots becoming west with gusts to around 20 knots in the late morning and afternoon. Chance of rain showers in the morning. Waves 3 to 5 feet subsiding to 1 to 3 feet late in the afternoon. A small craft advisory may be needed. .TUESDAY NIGHT...West wind 5 to 10 knots. Mostly cloudy. Waves 1 to 2 feet. $$LSZ147-181600- Sand Island to Bayfield WI- 246 AM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...North wind 5 to 10 knots becoming east late in the afternoon. Slight chance of rain showers early in the morning. Waves 2 to 4 feet subsiding to 1 to 2 feet in the afternoon. .TONIGHT...Northeast wind 15 to 20 knots with gusts to around 25 knots. Rain showers likely in the evening. Slight chance of thunderstorms through the night. Rain showers after midnight. Waves 1 to 3 feet building to 3 to 5 feet after midnight. A small craft advisory may be needed. .TUESDAY...North wind 10 to 15 knots with gusts to around 20 knots becoming west 5 to 10 knots with gusts to around 20 knots in the late morning and afternoon. Chance of rain showers in the morning. Waves 3 to 5 feet subsiding to 1 to 3 feet late in the afternoon. A small craft advisory may be needed. .TUESDAY NIGHT...Northwest wind 5 to 10 knots. Gusts up to 20 knots early in the evening. Mostly cloudy in the evening then becoming partly cloudy. Waves 1 to 2 feet. $$ LSZ150-181600- Outer Apostle Islands Beyond 5 NM from Mainland- 246 AM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...North wind 5 to 10 knots becoming northeast late in the afternoon. Slight chance of showers and thunderstorms early in the morning. Waves 3 to 5 feet subsiding to 1 to 3 feet in the afternoon. .TONIGHT...Northeast wind 15 to 20 knots. Gusts up to 20 knots increasing to 25 knots in the late evening and overnight. Rain showers likely in the evening. Slight chance of thunderstorms through the night. Rain showers after midnight. Waves 1 to 3 feet building to 4 to 7 feet in the late evening and overnight. Waves occasionally to 9 feet. A small craft advisory may be needed. .TUESDAY...North wind 10 to 15 knots with gusts to around 25 knots becoming west 5 to 10 knots with gusts to around 20 knots in the late morning and afternoon. Chance of rain showers in the morning. Waves 4 to 7 feet subsiding to 2 to 4 feet late in the afternoon. Waves occasionally to 9 feet. A small craft advisory may be needed. .TUESDAY NIGHT...Northwest wind 5 to 10 knots. Mostly cloudy. Waves 1 to 3 feet. $$ LSZ121-181600- Chequamegon Bay-Bayfield to Oak Point WI- 246 AM CDT Mon May 18 2026 .TODAY...North wind 5 knots becoming northeast in the afternoon. Slight chance of rain showers early in the morning. Waves 1 foot or less. .TONIGHT...Northeast wind 15 to 20 knots. Gusts up to 25 knots in the late evening and early morning decreasing to 20 knots. Rain showers likely in the evening. Slight chance of thunderstorms through the night. Rain showers after midnight. Waves 1 to 2 feet. .TUESDAY...North wind 10 to 15 knots with gusts to around 20 knots becoming northwest with gusts to around 20 knots in the late morning and afternoon. Chance of rain showers in the morning. Waves 1 to 2 feet. .TUESDAY NIGHT...Northwest wind 10 to 15 knots with gusts to around 20 knots easing to 5 knots after midnight. Mostly cloudy in the evening then becoming partly cloudy. Waves 1 foot or less. $$ LSZ148-181600- Oak Point to Saxon Harbor WI- 246 AM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...North wind 5 knots becoming northeast in the afternoon. Slight chance of rain showers early in the morning. Waves 1 to 3 feet. .TONIGHT...Northeast wind 15 to 20 knots. Gusts up to 25 knots in the late evening and early morning decreasing to 20 knots. Rain showers likely in the evening. Slight chance of thunderstorms through the night. Rain showers after midnight. Waves 1 to 3 feet building to 5 to 8 feet. Waves occasionally to 10 feet. A small craft advisory may be needed. .TUESDAY...North wind 10 to 15 knots with gusts to around 20 knots becoming northwest with gusts to around 20 knots in the late morning and afternoon. Chance of rain showers in the morning. Waves 4 to 6 feet. Waves occasionally to 8 feet. A small craft advisory may be needed. .TUESDAY NIGHT...Northwest wind 10 to 15 knots with gusts to around 20 knots easing to 5 knots after midnight. Mostly cloudy. Waves 1 to 3 feet subsiding to 1 to 2 feet in the late evening and overnight. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH