348 FZUS53 KIWX 190201 NSHIWX Nearshore Marine Forecast National Weather Service Northern Indiana 1001 PM EDT Mon May 18 2026 For waters within five nautical miles of shore on Lake Michigan LMZ046-190830- Michigan City IN to New Buffalo MI- 1001 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT TUESDAY THROUGH TUESDAY AFTERNOON... .OVERNIGHT...South winds 10 to 15 knots increasing to 15 to 20 knots. Gusts up to 25 knots late. Mostly cloudy. Waves 1 to 3 feet. .TUESDAY...South winds 15 to 20 knots becoming southwest. Gusts up to 25 knots. A slight chance of showers and thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. Waves 1 to 3 feet. .TUESDAY NIGHT...West winds 10 to 15 knots becoming north. Showers likely with a chance of thunderstorms in the evening, then a chance of showers overnight. Waves 2 to 3 feet. .WEDNESDAY...North winds 10 to 15 knots. Mostly sunny. Waves 2 to 4 feet. Winds and waves higher in and near thunderstorms. The water temperature at St. Joseph is 55 degrees and at Michigan City is 53 degrees. $$ LMZ043-190830- New Buffalo MI to St Joseph MI- 1001 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT TUESDAY THROUGH TUESDAY AFTERNOON... .OVERNIGHT...South winds 10 to 15 knots increasing to 15 to 20 knots. Gusts up to 25 knots late. Mostly cloudy. Waves 1 to 3 feet. .TUESDAY...South winds 15 to 20 knots becoming southwest. Gusts up to 30 knots. A slight chance of showers and thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. Waves 2 to 4 feet. .TUESDAY NIGHT...West winds 10 to 15 knots becoming north. Showers likely with a chance of thunderstorms in the evening, then a chance of showers overnight. Waves 2 to 3 feet. .WEDNESDAY...North winds 10 to 15 knots. Mostly sunny. Waves 2 to 4 feet. Winds and waves higher in and near thunderstorms. The water temperature at St. Joseph is 55 degrees and at Michigan City is 53 degrees. $$  556 FZUS53 KGRR 190203 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 1003 PM EDT Mon May 18 2026 For waters within five nautical miles of shore on Lake Michigan LMZ849-190900- Pentwater to Manistee MI- 1003 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .REST OF TONIGHT...South winds to 30 knots. A slight chance of showers and thunderstorms late in the evening, then rain showers likely and a chance of thunderstorms after midnight. Patchy fog through the night. Waves 4 to 6 feet. .TUESDAY...South winds to 30 knots. Rain showers likely and a chance of thunderstorms. Patchy fog. Waves 5 to 7 feet. .TUESDAY NIGHT...West winds 10 to 20 knots veering north in the late evening and overnight. Partly cloudy with a chance of rain showers. Waves 3 to 5 feet. .WEDNESDAY...North winds 15 to 25 knots. Sunny. Waves 2 to 3 feet. .WEDNESDAY NIGHT...Northeast winds 10 to 20 knots decreasing to 5 to 10 knots after midnight. Partly cloudy. 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 20 knots. Mostly cloudy. Waves around 1 foot. .SATURDAY...Northeast winds 10 to 15 knots. Mostly cloudy with a chance of rain showers. Waves around 1 foot. $$ LMZ848-190900- Whitehall to Pentwater MI- 1003 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .REST OF TONIGHT...South winds to 30 knots. Mostly cloudy with a chance of showers and thunderstorms. Patchy fog after midnight. Waves 4 to 6 feet. .TUESDAY...South winds to 30 knots. Rain showers likely and a chance of thunderstorms. Patchy fog. Waves 5 to 7 feet. .TUESDAY NIGHT...West winds 20 to 25 knots veering north 15 to 20 knots in the late evening and overnight. Partly cloudy with a chance of rain showers. Waves 3 to 5 feet. .WEDNESDAY...North winds 15 to 25 knots. Sunny. Waves 2 to 4 feet. .WEDNESDAY NIGHT...North winds 15 to 25 knots veering northeast 10 to 15 knots in the late evening and overnight. Partly cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. .THURSDAY...Northeast winds 10 to 15 knots backing north early in the afternoon. Mostly sunny. Waves around 1 foot. .FRIDAY...East winds 15 to 20 knots. Mostly cloudy. Waves around 1 foot. .SATURDAY...Northeast winds 15 to 20 knots. Mostly cloudy. Waves around 1 foot. $$ LMZ847-190900- Grand Haven to Whitehall MI- 1003 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .REST OF TONIGHT...South winds to 30 knots. Cloudy with a chance of showers and thunderstorms. Patchy fog after midnight. Waves 4 to 6 feet. .TUESDAY...Southwest winds to 30 knots. Rain showers likely and a chance of thunderstorms. Patchy fog. Waves 5 to 7 feet. .TUESDAY NIGHT...Northwest winds 15 to 25 knots veering north after midnight. Rain showers likely. Waves 3 to 5 feet. .WEDNESDAY...North winds 15 to 25 knots. Sunny. Waves 2 to 4 feet. .WEDNESDAY NIGHT...North winds 15 to 25 knots veering northeast 10 to 15 knots after midnight. Partly cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. .THURSDAY...East winds 10 to 15 knots backing north early in the afternoon. Mostly sunny. Waves 1 foot or less. .FRIDAY...East winds 15 to 20 knots. Mostly cloudy. Waves 1 to 2 feet. .SATURDAY...East winds 15 to 20 knots backing northeast 10 to 15 knots early in the afternoon. Mostly cloudy with a chance of rain showers. Waves around 1 foot. $$ LMZ846-190900- Holland to Grand Haven MI- 1003 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .REST OF TONIGHT...South winds to 30 knots. Mostly cloudy with a chance of showers and thunderstorms. Patchy fog after midnight. Waves 3 to 5 feet. .TUESDAY...Southwest winds to 30 knots. Rain showers likely and a chance of thunderstorms. Patchy fog. Waves 4 to 6 feet. .TUESDAY NIGHT...Northwest winds 15 to 20 knots veering north after midnight. Rain showers likely and a slight chance of thunderstorms. Waves 2 to 4 feet. .WEDNESDAY...North winds 15 to 25 knots. Mostly sunny. Waves 3 to 5 feet. .WEDNESDAY NIGHT...North winds 15 to 25 knots veering northeast around 15 knots after midnight. Partly cloudy. Waves 3 to 5 feet subsiding to 1 to 2 feet after midnight. .THURSDAY...Northeast winds 10 to 15 knots. Mostly sunny. Waves around 1 foot. .FRIDAY...East winds 15 to 20 knots. Mostly cloudy. Waves 1 to 2 feet. .SATURDAY...East winds 15 to 20 knots backing north 10 to 15 knots early in the afternoon. Mostly cloudy with a chance of rain showers. Waves 1 to 2 feet. $$ LMZ845-190900- South Haven to Holland MI- 1003 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT TUESDAY THROUGH TUESDAY EVENING... .REST OF TONIGHT...South winds 15 to 25 knots. Partly cloudy late in the evening then becoming mostly cloudy. 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...Northwest winds 15 to 20 knots veering north after midnight. Rain showers likely and a slight chance of thunderstorms. Waves 2 to 4 feet. .WEDNESDAY...North winds 15 to 25 knots. Mostly sunny. Waves 3 to 5 feet. .WEDNESDAY NIGHT...North winds 15 to 25 knots veering northeast around 15 knots after midnight. Partly cloudy. Waves 3 to 5 feet subsiding to 1 to 3 feet after midnight. .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. .SATURDAY...Northeast winds 10 to 15 knots backing northwest early in the afternoon. Mostly cloudy with a chance of rain showers. Waves around 1 foot. $$ LMZ844-190900- St Joseph to South Haven MI- 1003 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT TUESDAY THROUGH TUESDAY EVENING... .REST OF TONIGHT...South winds 15 to 25 knots. Partly cloudy late in the evening, then mostly cloudy with a chance of showers and thunderstorms after midnight. Waves 1 to 3 feet building to 2 to 4 feet after midnight. .TUESDAY...Southwest winds 20 to 25 knots. Partly sunny with a chance of showers and thunderstorms. Waves 3 to 5 feet. .TUESDAY NIGHT...Northwest winds around 15 knots veering north after midnight. Rain showers likely and a chance of thunderstorms. Waves 2 to 4 feet. .WEDNESDAY...North winds 15 to 25 knots. Mostly sunny. Waves 3 to 5 feet. .WEDNESDAY NIGHT...North winds 15 to 25 knots veering northeast 10 to 15 knots in the late evening and overnight. Partly cloudy. Waves 3 to 5 feet. .THURSDAY...Northeast winds 10 to 15 knots. Mostly sunny. Waves 1 to 2 feet. .FRIDAY...East winds 15 to 20 knots. Mostly cloudy with a chance of rain showers. Waves around 1 foot. .SATURDAY...East winds 10 to 15 knots backing northwest early in the afternoon. Mostly cloudy. Waves 1 foot or less. $$  557 FZUS51 KBUF 190203 NSHBUF Nearshore Marine Forecast National Weather Service Buffalo NY 1003 PM 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. LEZ020-LOZ030-190900- Upper Niagara River and Buffalo Harbor-Lower Niagara River- 1003 PM EDT Mon May 18 2026 .OVERNIGHT...Southwest winds 5 to 10 knots. A chance of showers late. .TUESDAY...Southwest winds 10 to 15 knots increasing to 15 to 20 knots. Partly to mostly sunny. .TUESDAY NIGHT...Southwest winds 10 to 15 knots becoming west. Showers with a chance of thunderstorms. .WEDNESDAY...Northwest winds 5 to 10 knots. Showers in the morning. .WEDNESDAY NIGHT...Northwest winds 10 knots or less becoming north. Partly cloudy. .THURSDAY...Northeast winds 10 knots or less becoming east. Partly cloudy. .FRIDAY...East winds 5 to 15 knots. Showers likely Friday night. .SATURDAY...East winds 5 to 15 knots becoming southeast. Showers likely during the day, then a chance of showers Saturday night. Winds and waves higher in and near thunderstorms. The water temperature off Buffalo is 52 degrees. $$ LEZ040-041-190900- Buffalo to Ripley along Lake Erie- 1003 PM EDT Mon May 18 2026 .OVERNIGHT...Southwest winds 5 to 10 knots. Mostly cloudy. Waves 1 foot or less. .TUESDAY...Southwest winds 10 to 15 knots. A chance of showers in the afternoon. Waves 2 feet or less. .TUESDAY NIGHT...Southwest winds 10 to 15 knots becoming west. Showers with a chance of thunderstorms. Waves 1 to 3 feet. .WEDNESDAY...West winds 5 to 10 knots. Showers in the morning. Waves 1 to 3 feet. .WEDNESDAY NIGHT...Northwest winds 5 to 10 knots becoming northeast. Partly to mostly cloudy. Waves 2 feet or less. .THURSDAY...Northeast winds 5 to 10 knots becoming east. Partly cloudy. Waves 2 feet or less. .FRIDAY...East winds 5 to 15 knots. A chance of showers during the day, then showers likely Friday night. Waves 1 foot or less. .SATURDAY...Southeast winds 5 to 15 knots. Showers likely with a chance of thunderstorms. Waves 1 foot or less. Winds and waves higher in and near thunderstorms. $$ LOZ042-190900- Niagara River to Hamlin Beach along Lake Ontario- 1003 PM EDT Mon May 18 2026 .OVERNIGHT...Southwest winds 10 to 15 knots. A chance of showers late. Waves 2 feet or less. .TUESDAY...Southwest winds 10 to 15 knots increasing to 15 to 20 knots. Partly to mostly sunny. Waves 1 to 3 feet building to 2 to 4 feet. .TUESDAY NIGHT...Southwest winds 15 to 20 knots becoming west. Showers with a chance of thunderstorms in the evening, then showers likely overnight. Waves 3 to 5 feet subsiding to 2 to 4 feet. Waves occasionally around 6 feet. .WEDNESDAY...West winds 15 to 20 knots. Showers likely in the morning. Waves 2 to 4 feet subsiding to 1 to 3 feet. .WEDNESDAY NIGHT...Northwest winds 5 to 15 knots becoming north. Partly cloudy. Waves 1 to 3 feet. .THURSDAY...Northeast winds 10 knots or less becoming east. Partly cloudy. Waves 2 feet or less. .FRIDAY...East winds 10 to 15 knots increasing to 15 to 20 knots. Showers likely Friday night. Waves 1 to 3 feet. .SATURDAY...East winds 15 to 20 knots diminishing to 10 to 15 knots. Showers likely during the day, then a chance of showers Saturday night. Waves 2 to 4 feet subsiding to 1 to 3 feet. Winds and waves higher in and near thunderstorms. $$ LOZ043-044-190900- Hamlin Beach to Mexico Bay along Lake Ontario including Irondequoit Bay- 1003 PM EDT Mon May 18 2026 .OVERNIGHT...South winds 5 to 10 knots becoming southwest. A chance of showers. Waves 1 foot or less. .TUESDAY...Southwest winds 5 to 15 knots increasing to 15 to 20 knots. Partly to mostly sunny. Waves 1 to 3feet. .TUESDAY NIGHT...Southwest winds 10 to 15 knots becoming west 15 to 20 knots. Showers likely with a chance of thunderstorms in the evening, then showers likely overnight. Waves 1 to 3 feet building to 2 to 4 feet. .WEDNESDAY...West winds 15 to 20 knots. A chance of showers in the morning. Waves 2 to 4 feet building to 4 to 7 feet. Waves occasionally around 9 feet. .WEDNESDAY NIGHT...West winds 15 to 20 knots becoming north 10 to 15 knots. Partly cloudy. Waves 4 to 7 feet subsiding to 2 to 4 feet. Waves occasionally around 9 feet. .THURSDAY...North winds 5 to 15 knots becoming east less than 10 knots. Partly cloudy. Waves 1 to 3 feet subsiding to 1 foot or less. .FRIDAY...East winds 5 to 15 knots. A chance of showers Friday night. Waves 2 feet or less. .SATURDAY...Southeast winds 15 to 20 knots diminishing to 10 to 15 knots. Showers likely. Waves 2 to 4 feet subsiding to 1 to 3 feet. Winds and waves higher in and near thunderstorms. The water temperature off Rochester is 49 degrees. $$ LOZ045-190900- Mexico Bay to the Saint Lawrence River along Lake Ontario- 1003 PM EDT Mon May 18 2026 .OVERNIGHT...South winds 5 to 10 knots. A chance of showers and thunderstorms, then a chance of showers late. Waves 2 feet or less. .TUESDAY...Southwest winds 10 to 15 knots. A chance of showers in the morning. Waves 2 feet or less. .TUESDAY NIGHT...Southwest winds 10 to 15 knots increasing to 15 to 20 knots. Showers with a chance of thunderstorms in the evening, then showers overnight. Waves 1 to 3 feet building to 2 to 4 feet. .WEDNESDAY...West winds 10 to 15 knots becoming southwest 15 to 20 knots. Showers likely in the morning. Waves 2 to 4 feet building to 3 to 6 feet. Waves occasionally around 7 feet. .WEDNESDAY NIGHT...West winds 15 to 20 knots becoming north 10 to 15 knots. Partly cloudy. Waves 3 to 6 feet subsiding to 1 to 3 feet. Waves occasionally around 7 feet. .THURSDAY...North winds 10 to 15 knots becoming light and variable. Mainly clear, then becoming partly cloudy. Waves 2 feet or less. .FRIDAY...East winds 10 knots or less. A chance of showers Friday night. Waves 1 foot or less. .SATURDAY...Southeast winds 10 to 15 knots. Showers likely. Waves 2 feet or less. Winds and waves higher in and near thunderstorms. $$  129 FZUS53 KMKX 190210 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 910 PM CDT Mon May 18 2026 For waters within five nautical miles of shore on Lake Michigan LMZ643-191000- Sheboygan to Port Washington WI- 910 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT TUESDAY THROUGH TUESDAY AFTERNOON... .REST OF TONIGHT...South wind 10 to 15 knots rising to 15 to 20 knots after midnight. Slight chance of showers just before midnight, then showers likely and a chance of thunderstorms after midnight. patchy fog after midnight. Waves 3 to 4 feet. .TUESDAY...South wind 15 to 20 knots veering west late in the afternoon. Gusts up to 25 knots. Patchy fog in the morning. chance of showers and slight chance of thunderstorms through the day. Waves 3 to 4 feet. .TUESDAY NIGHT...Northwest wind 15 to 20 knots easing to 10 to 15 knots with gusts to around 20 knots late in the evening, then becoming northwest 10 to 15 knots with gusts to around 20 knots after midnight veering north early in the morning. Partly cloudy. Waves 1 to 2 feet. .WEDNESDAY...North wind 10 to 15 knots veering northeast late in the afternoon. Mostly sunny. Waves 1 to 2 feet. $$ LMZ644-191000- Port Washington to North Point Light WI- 910 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT TUESDAY THROUGH TUESDAY AFTERNOON... .REST OF TONIGHT...South wind 10 to 15 knots. Gusts up to 20 knots. Slight chance of showers just before midnight, then 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 after midnight. .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 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 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. $$ LMZ645-191000- North Point Light to Wind Point WI- 910 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT TUESDAY THROUGH TUESDAY AFTERNOON... .REST OF TONIGHT...South wind 10 to 15 knots rising to 15 to 20 knots early in the morning. Slight chance of showers just before midnight, then showers likely and a chance of thunderstorms after midnight. patchy fog early in the morning. Waves 1 to 2 feet building to 2 to 4 feet after midnight. .TUESDAY...Southwest wind 15 to 20 knots veering west early in the afternoon, then easing to 10 to 15 knots late in the afternoon. Gusts up to 25 knots. Slight chance of showers in the morning. Slight chance of thunderstorms through the day. Chance of showers in the afternoon. Waves 2 to 4 feet subsiding to 1 to 2 feet late in the afternoon. .TUESDAY NIGHT...Northwest wind 10 to 15 knots with gusts to around 20 knots veering north early in the morning. Partly cloudy. Waves 1 to 2 feet. .WEDNESDAY...North wind 10 to 15 knots veering northeast late in the afternoon. Mostly sunny. Waves 2 to 4 feet. $$ LMZ646-191000- Wind Point WI to Winthrop Harbor IL- 910 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT TUESDAY THROUGH TUESDAY AFTERNOON... .REST OF TONIGHT...South wind 10 to 15 knots. Gusts up to 20 knots. Slight chance of showers just before midnight, then 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 after midnight. .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. $$ See Lake Michigan Open Waters Forecast for Thursday through Saturday.  505 FZUS53 KAPX 190218 NSHAPX Nearshore Marine Forecast National Weather Service Gaylord MI 1018 PM EDT Mon May 18 2026 For waters within five nautical miles of shore on Lakes Huron... Michigan and Superior. Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. LSZ321-191030- Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI- 1018 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH TUESDAY EVENING... .OVERNIGHT...Southeast wind 10 to 15 knots. Isolated showers and thunderstorms early in the evening, then numerous showers and scattered thunderstorms after midnight. Waves 2 feet or less. .TUESDAY...Southwest wind 15 to 25 knots. Numerous showers and isolated thunderstorms. Waves 4 to 6 feet. .TUESDAY NIGHT...Northwest wind 15 to 25 knots. Mostly cloudy. Waves 4 to 7 feet. .WEDNESDAY...Northwest wind 10 to 20 knots. Mostly sunny. Waves 4 to 6 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LSZ322-191030- St. Marys River Point Iroquois to E. Potagannissing Bay- 1018 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH TUESDAY EVENING... .OVERNIGHT...Southeast wind 10 to 15 knots. Isolated showers and thunderstorms early in the evening, then scattered showers and thunderstorms after midnight. .TUESDAY...Southwest wind 15 to 20 knots. Numerous showers and isolated thunderstorms. .TUESDAY NIGHT...Northwest wind 15 to 25 knots. Mostly cloudy. .WEDNESDAY...Northwest wind 15 to 20 knots. Mostly sunny. Winds higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ341-191030- Seul Choix Point to 5NM West of Mackinac Bridge- 1018 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .OVERNIGHT...Southeast wind 5 to 10 knots becoming south 10 to 20 knots after midnight. Isolated showers and thunderstorms early in the evening, then scattered showers and thunderstorms after midnight. Waves 2 feet or less building to 2 to 4 feet after midnight. .TUESDAY...Southwest wind 15 to 25 knots. Scattered showers and isolated thunderstorms. Waves 4 to 6 feet. .TUESDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet. .WEDNESDAY...Northwest wind 10 to 15 knots. Mostly sunny. Waves 2 to 3 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ342-191030- Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay- 1018 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .OVERNIGHT...South wind 10 to 20 knots. Isolated showers early in the evening. Isolated thunderstorms through the night. Scattered showers after midnight. Waves 2 feet or less building to 2 to 3 feet after midnight. .TUESDAY...Southwest wind 15 to 25 knots. Scattered showers and isolated thunderstorms. Waves 3 to 5 feet. .TUESDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet. .WEDNESDAY...Northwest wind 10 to 15 knots. Mostly sunny. Waves 2 to 4 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ323-191030- Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI- 1018 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .OVERNIGHT...South wind 10 to 20 knots. Scattered showers and isolated thunderstorms after midnight. Waves 2 feet or less building to 2 to 3 feet after midnight. .TUESDAY...Southwest wind 10 to 20 knots. Scattered showers and isolated thunderstorms. Waves 2 to 4 feet. .TUESDAY NIGHT...North wind 10 to 20 knots. Mostly cloudy. Waves 2 to 3 feet. .WEDNESDAY...Northwest wind 10 to 15 knots. Mostly sunny. Waves 2 to 3 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ344-345-191030- Sleeping Bear Point to Grand Traverse Light MI- Point Betsie to Sleeping Bear Point MI- 1018 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .OVERNIGHT...South wind 10 to 20 knots. Isolated showers and thunderstorms early in the evening, then numerous showers and scattered thunderstorms after midnight. Waves 2 to 3 feet building to 3 to 5 feet after midnight. .TUESDAY...Southwest wind 15 to 20 knots. Scattered showers and isolated thunderstorms. Waves 3 to 5 feet. .TUESDAY NIGHT...North wind 10 to 15 knots. Mostly cloudy. Waves 2 to 3 feet. .WEDNESDAY...North wind 10 to 15 knots. Mostly sunny. Waves 2 to 3 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ346-191030- Manistee to Point Betsie MI- 1018 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .OVERNIGHT...South wind 10 to 20 knots. Scattered showers early in the evening. Scattered thunderstorms through the night. Numerous showers after midnight. Waves 2 to 4 feet building to 3 to 5 feet after midnight. .TUESDAY...Southwest wind 10 to 20 knots. Scattered showers and isolated thunderstorms. Waves 4 to 6 feet. .TUESDAY NIGHT...North wind 10 to 15 knots. Mostly cloudy. Waves 2 to 4 feet. .WEDNESDAY...North wind 10 to 15 knots. Sunny. Waves 2 to 3 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ345-191030- Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island- 1018 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH TUESDAY EVENING... .OVERNIGHT...South wind 15 to 20 knots. Isolated showers early in the evening. Isolated thunderstorms through the night. Scattered showers after midnight. Waves 2 feet or less. .TUESDAY...Southwest wind 15 to 25 knots. Scattered showers and isolated thunderstorms. Waves 2 to 4 feet. .TUESDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet. .WEDNESDAY...Northwest wind 10 to 20 knots. Mostly sunny. Waves 2 to 3 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ346-191030- St Ignace to False Detour Channel- 1018 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH TUESDAY EVENING... .OVERNIGHT...South wind 15 to 20 knots. Isolated showers and thunderstorms early in the evening, then scattered showers and thunderstorms after midnight. Waves 2 feet or less. .TUESDAY...Southwest wind 15 to 25 knots. Scattered showers and isolated thunderstorms. Waves 3 to 5 feet. .TUESDAY NIGHT...Northwest wind 15 to 25 knots. Mostly cloudy. Waves 3 to 5 feet. .WEDNESDAY...Northwest wind 15 to 25 knots. Sunny. Waves 3 to 5 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ347-191030- 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island- 1018 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH TUESDAY EVENING... .OVERNIGHT...South wind 15 to 20 knots. Isolated showers early in the evening. Isolated thunderstorms through the night. Scattered showers after midnight. Waves 2 feet or less. .TUESDAY...Southwest wind 10 to 20 knots.Scattered showers and isolated thunderstorms. Waves 3 to 5 feet. .TUESDAY NIGHT...Northwest wind 15 to 25 knots. Mostly cloudy. Waves 5 to 8 feet. .WEDNESDAY...Northwest wind 15 to 25 knots. Sunny. Waves 5 to 8 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ348-191030- Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary- 1018 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH TUESDAY EVENING... .OVERNIGHT...South wind 10 to 15 knots. Isolated showers through the night. Isolated thunderstorms after midnight. Waves 2 to 4 feet. .TUESDAY...Southwest wind 10 to 20 knots. Scattered showers and isolated thunderstorms. Waves 3 to 5 feet. .TUESDAY NIGHT...Northwest wind 15 to 25 knots. Mostly cloudy. Waves 5 to 8 feet. .WEDNESDAY...Northwest wind 15 to 25 knots. Sunny. Waves 5 to 8 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ349-191030- Sturgeon Pt to Alabaster MI- 1018 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH TUESDAY EVENING... .OVERNIGHT...South wind 10 to 20 knots. Isolated showers through the night. Isolated thunderstorms after midnight. Waves 2 to 4 feet. .TUESDAY...Southwest wind 15 to 25 knots. Scattered showers and isolated thunderstorms. Waves 3 to 5 feet. .TUESDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet. .WEDNESDAY...North wind 10 to 20 knots. Sunny. Waves 2 to 3 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ SJC  814 FZUS53 KLOT 190251 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 951 PM CDT Mon May 18 2026 For waters within five nautical miles of shore on Lake Michigan Waves are provided as a range of significant wave heights, which is the average of the highest 1/3 of the waves, along with the average height of the highest 10 percent of the waves which will occasionally be encountered. LMZ740>742-190930- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 951 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM CDT TUESDAY THROUGH TUESDAY AFTERNOON... .REST OF TONIGHT...South winds 15 to 25 kt. Chance of showers and slight chance of thunderstorms after midnight. Waves 2 to 4 ft. .TUESDAY...Southwest winds 20 to 25 kt becoming west 15 to 25 kt in the late afternoon. Chance of showers and slight chance of thunderstorms. Waves 3 to 5 ft subsiding to 2 to 4 ft. .TUESDAY NIGHT...Northwest winds 15 to 20 kt becoming north overnight. Waves 1 to 3 ft building to 2 to 4 ft. .WEDNESDAY...North winds 15 to 20 kt becoming northeast. Partly cloudy. Waves 2 to 4 ft building to 3 to 5 ft. $$ LMZ743>745-190930- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 951 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM CDT TUESDAY THROUGH TUESDAY AFTERNOON... .REST OF TONIGHT...South winds 15 to 25 kt. Chance of showers and slight chance of thunderstorms after midnight. Waves 1 to 3 ft building to 2 to 4 ft. .TUESDAY...Southwest winds 20 to 25 kt becoming west 15 to 25 kt in the late afternoon. Slight chance of showers and thunderstorms in the morning, then chance of showers and thunderstorms in the afternoon. Waves 2 to 4 ft. .TUESDAY NIGHT...Northwest winds 15 to 20 kt becoming north overnight. Showers likely and a chance of thunderstorms in the evening. Waves 2 to 4 ft. .WEDNESDAY...North winds 15 to 20 kt. Mostly cloudy in the morning, then becoming partly cloudy. Waves 3 to 5 ft. $$ DK