447 FZUS51 KBUF 190803 NSHBUF Nearshore Marine Forecast National Weather Service Buffalo NY 403 AM EDT Tue May 19 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-LOZ030-191500- Upper Niagara River and Buffalo Harbor-Lower Niagara River- 403 AM EDT Tue May 19 2026 .TODAY...Southwest winds 10 to 15 knots increasing to 15 to 20 knots. Partly to mostly sunny. .TONIGHT...Southwest winds 10 to 15 knots becoming west. Showers with a chance of thunderstorms. .WEDNESDAY...Northwest winds 5 to 10 knots. A chance of showers in the morning. .WEDNESDAY NIGHT...North winds 10 knots or less. Partly cloudy. .THURSDAY...Northeast winds 10 knots or less becoming east. Partly to mostly cloudy. .FRIDAY...East winds 5 to 15 knots. A chance of showers during the day, then showers likely Friday night. .SATURDAY...East winds 5 to 15 knots becoming southeast less than 10 knots. Showers likely. Winds and waves higher in and near thunderstorms. The water temperature off Buffalo is 52 degrees. $$ LEZ040-041-191500- Buffalo to Ripley along Lake Erie- 403 AM EDT Tue May 19 2026 .TODAY...Southwest winds 10 to 15 knots. A chance of showers early. A chance of showers and thunderstorms late. Waves 2 feet or less. .TONIGHT...Southwest winds around 10 knots becoming west. Showers with a chance of thunderstorms. Waves 1 to 3 feet. .WEDNESDAY...West winds 5 to 10 knots. A chance of showers and thunderstorms in the morning. Waves 1 to 2 feet. .WEDNESDAY NIGHT...West winds 5 to 10 knots becoming northeast. Partly to mostly cloudy. Waves 1 foot or less. .THURSDAY...Northeast winds 5 to 10 knots becoming east. Partly to mostly cloudy. Waves 2 feet or less. .FRIDAY...East winds 5 to 10 knots increasing to 15 to 20 knots. A chance of showers during the day, then showers Friday night. Waves 2 feet or less. .SATURDAY...Southeast winds 15 to 20 knots becoming south 5 to 15 knots. Showers with a chance of thunderstorms. Waves 2 feet or less. Winds and waves higher in and near thunderstorms. $$ LOZ042-191500- Niagara River to Hamlin Beach along Lake Ontario- 403 AM EDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING THROUGH LATE TONIGHT... .TODAY...Southwest winds 10 to 15 knots increasing to 15 to 20 knots. A chance of showers early. Waves 1 to 3 feet building to 2 to 4 feet. .TONIGHT...Southwest winds 15 to 20 knots becoming west. Showers with a chance of thunderstorms in the evening, then showers likely overnight. Waves 2 to 4 feet subsiding to 1 to 3 feet. .WEDNESDAY...West winds 10 to 15 knots. A chance of showers in the morning. Waves 1 to 3 feet. .WEDNESDAY NIGHT...Northwest winds 5 to 15 knots becoming north. Partly cloudy. Waves 1 to 3 feet. .THURSDAY...Northeast winds 5 to 15 knots becoming east 10 knots or less. Partly to mostly cloudy. Waves 2 feet or less. .FRIDAY...East winds 10 to 15 knots increasing to 15 to 20 knots. Showers likely Friday night. Waves 2 feet or less building to 2 to 4 feet. .SATURDAY...East winds 15 to 20 knots becoming southeast 10 to 15 knots. Showers likely. Waves 3 to 5 feet subsiding to 1 to 3 feet. Waves occasionally around 6 feet. Winds and waves higher in and near thunderstorms. $$ LOZ043-044-191500- Hamlin Beach to Mexico Bay along Lake Ontario including Irondequoit Bay- 403 AM EDT Tue May 19 2026 .TODAY...Southwest winds 10 to 15 knots increasing to 15 to 20 knots. Mostly cloudy this morning, then becoming mostly sunny. Waves 1 to 3 feet. .TONIGHT...Southwest winds 10 to 15 knots becoming west 15 to 20 knots. Showers with a chance of thunderstorms. Waves 1 to 3 feet. .WEDNESDAY...West winds 15 to 20 knots. A chance of showers. Waves 2 to 4 feet building to 3 to 6 feet. Waves occasionally around 7 feet. .WEDNESDAY NIGHT...West winds 15 to 20 knots becoming north 10 to 15 knots. Partly cloudy. Waves 3 to 6 feet subsiding to 2 to 4 feet. Waves occasionally around 7 feet. .THURSDAY...Northeast winds 5 to 15 knots becoming east less than 10 knots. Partly cloudy. Waves 1 to 3 feet subsiding to 1 foot or less. .FRIDAY...East winds 5 to 15 knots increasing to 15 to 20 knots. Showers likely Friday night. Waves 1 to 3 feet building to 2 to 4 feet. .SATURDAY...East winds 15 to 20 knots becoming southeast 10 to 15 knots. Showers. Waves 3 to 5 feet subsiding to 1 to 3 feet. Waves occasionally around 6 feet. Winds and waves higher in and near thunderstorms. The water temperature off Rochester is 49 degrees. $$ LOZ045-191500- Mexico Bay to the Saint Lawrence River along Lake Ontario- 403 AM EDT Tue May 19 2026 .TODAY...Southwest winds 10 to 15 knots. A chance of showers early. Waves 2 feet or less. .TONIGHT...Southwest winds 10 to 15 knots. Showers with a chance of thunderstorms. Waves 1 to 3 feet. .WEDNESDAY...West winds 10 to 15 knots becoming southwest 15 to 20 knots. A chance of showers. 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 increasing to 10 to 15 knots. Showers likely Friday night. Waves 1 foot or less. .SATURDAY...East winds 15 to 20 knots becoming southeast. Showers likely. Waves 2 feet or less. Winds and waves higher in and near thunderstorms. $$  185 FZUS53 KMKX 190810 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 310 AM CDT Tue May 19 2026 For waters within five nautical miles of shore on Lake Michigan LMZ643-192100- Sheboygan to Port Washington WI- 310 AM CDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON... .EARLY THIS MORNING...South wind 10 to 20 knots rising to 15 to 25 knots early in the morning. Showers likely and scattered thunderstorms. Patchy fog. Waves 3 to 4 feet building to 4 to 6 feet early in the morning. .TODAY...South wind 15 to 25 knots veering southwest 15 to 20 knots late in the morning, then veering west early in the afternoon becoming west 15 to 20 knots late in the afternoon. Patchy fog in the morning. chance of showers and slight chance of thunderstorms in the morning, then slight chance of showers late in the morning. Chance of showers early in the afternoon. Waves 4 to 6 feet subsiding to 3 to 4 feet. .TONIGHT...Northwest wind 15 to 20 knots easing to 10 to 15 knots late in the evening, then becoming northwest 10 to 15 knots after midnight veering north early in the morning. Partly cloudy. Waves 2 to 4 feet subsiding to 1 to 2 feet in the late evening and overnight. .WEDNESDAY...North wind 10 to 15 knots veering northeast late in the afternoon. Mostly sunny. Waves 1 to 2 feet building to 2 to 4 feet in the afternoon. .WEDNESDAY NIGHT...Northeast wind 10 to 15 knots. Partly cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and early morning, then building to 2 to 4 feet early in the morning. $$ LMZ644-192100- Port Washington to North Point Light WI- 310 AM CDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON... .EARLY THIS MORNING...South wind 15 to 20 knots becoming 15 to 25 knots early in the morning. Showers likely and scattered thunderstorms. Patchy fog. Waves 3 to 4 feet. .TODAY...Southwest wind 15 to 25 knots easing to 10 to 20 knots late in the morning, then veering west 15 to 20 knots in the afternoon. Chance of showers and slight chance of thunderstorms in the morning, then slight chance of showers late in the morning. Chance of showers early in the afternoon. Waves 3 to 5 feet subsiding to 1 to 2 feet. .TONIGHT...Northwest wind 15 to 20 knots easing to 10 to 15 knots late in the evening, then rising to 15 to 20 knots after midnight becoming north 10 to 15 knots early in the morning. Partly cloudy. Waves 1 to 2 feet. .WEDNESDAY...North wind 10 to 15 knots veering northeast in the afternoon. Mostly sunny. Waves 1 to 2 feet building to 2 to 4 feet in the afternoon. .WEDNESDAY NIGHT...Northeast wind 10 to 15 knots rising to 15 to 20 knots early in the morning. Partly cloudy. Waves 2 to 4 feet. $$ LMZ645-192100- North Point Light to Wind Point WI- 310 AM CDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON... .EARLY THIS MORNING...South wind 15 to 20 knots becoming 15 to 25 knots early in the morning. Showers likely and scattered thunderstorms. Patchy fog. Waves 3 to 4 feet. .TODAY...Southwest wind 15 to 25 knots easing to 10 to 20 knots late in the morning, then veering west 15 to 20 knots in the afternoon. Chance of showers and slight chance of thunderstorms through the day. Waves 3 to 4 feet subsiding to 1 to 2 feet late in the afternoon. .TONIGHT...Northwest wind 10 to 15 knots with gusts to around 20 knots becoming northwest 10 to 15 knots late in the evening, then rising to 15 to 20 knots after midnight veering north early in the morning. Partly cloudy. Waves 1 to 2 feet building to 2 to 4 feet early in the morning. .WEDNESDAY...North wind 10 to 15 knots veering northeast late in the morning, then rising to 15 to 20 knots early in the afternoon easing to 10 to 15 knots late in the afternoon. Mostly sunny. Waves 2to 4 feet. .WEDNESDAY NIGHT...Northeast wind 15 to 20 knots. Partly cloudy. Waves 3 to 4 feet. $$ LMZ646-192100- Wind Point WI to Winthrop Harbor IL- 310 AM CDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON... .EARLY THIS MORNING...South wind 15 to 20 knots. Showers likely and slight chance of thunderstorms. Patchy fog. Waves 3 to 4 feet. .TODAY...Southwest wind 15 to 20 knots becoming west 10 to 15 knots late in the afternoon. Gusts up to 30 knots decreasing to 20 knots late in the afternoon. 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. .TONIGHT...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 with gusts to around 20 knots in the afternoon. Mostly sunny. Waves 2 to 4 feet. .WEDNESDAY NIGHT...Northeast wind 15 to 20 knots. Partly cloudy. Waves 3 to 4 feet. $$ See Lake Michigan Open Waters Forecast for Thursday through Saturday.  781 FZUS53 KGRR 190823 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 423 AM EDT Tue May 19 2026 For waters within five nautical miles of shore on Lake Michigan LMZ849-190930- Pentwater to Manistee MI- 423 AM EDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING... .REST OF TONIGHT...South winds 20 to 25 knots. Rain showers likely and a slight chance of thunderstorms. Patchy fog. Waves 4 to 6 feet. .TUESDAY...South winds to 30 knots. Mostly cloudy with rain showers likely and a slight chance of thunderstorms. Patchy fog. Waves 5 to 7 feet. .TUESDAY NIGHT...West winds 10 to 20 knots veering north in the late evening and overnight. Mostly cloudy. Waves 3 to 5 feet. .WEDNESDAY...North winds 15 to 25 knots. Sunny. Waves 2 to 3 feet. .WEDNESDAY NIGHT...Northeast winds 10 to 20 knots. Partly cloudy. Waves 2 to 3 feet. .THURSDAY...Northeast winds 5 to 15 knots backing north early in the afternoon. Partly sunny. Waves 1 to 2 feet. .FRIDAY...East winds 10 to 20 knots. Mostly cloudy. Waves around 1 foot. .SATURDAY...Northeast winds 10 to 15 knots backing north early in the afternoon. Partly sunny. Waves around 1 foot. $$ LMZ848-190930- Whitehall to Pentwater MI- 423 AM EDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING... .REST OF TONIGHT...South winds 20 to 25 knots. Rain showers likely and a chance of thunderstorms. Patchy fog. Waves 5 to 7 feet. .TUESDAY...South winds 15 to 25 knots. Rain showers likely and a chance of thunderstorms. Patchy fog. Waves 6 to 8 feet. .TUESDAY NIGHT...Northwest winds 15 to 20 knots veering north after midnight. Partly cloudy. Waves 3 to 5 feet. .WEDNESDAY...North winds 15 to 25 knots. Sunny. Waves 2 to 4 feet. .WEDNESDAY NIGHT...Northeast winds 15 to 25 knots decreasing to 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...Northeast winds 10 to 20 knots backing north early in the afternoon. Partly sunny. Waves 1 to 2 feet. .FRIDAY...East winds 15 to 20 knots. Cloudy. Waves 1 to 2 feet. .SATURDAY...Northeast winds 15 to 20 knots backing north early in the afternoon. Partly sunny. Waves 1 to 2 feet. $$ LMZ847-190930- Grand Haven to Whitehall MI- 423 AM EDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING... .REST OF TONIGHT...South winds 20 to 25 knots. Mostly cloudy with a chance of showers and thunderstorms. Patchy fog. Waves 4 to 6 feet. .TUESDAY...South winds to 30 knots veering southwest 15 to 20 knots early in the afternoon. Rain showers likely and a chance of thunderstorms. Patchy fog. Waves 6 to 8 feet. .TUESDAY NIGHT...Northwest winds 15 to 20 knots veering north after midnight. Partly cloudy. Waves 3 to 5 feet. .WEDNESDAY...North winds 15 to 25 knots. Mostly sunny. Waves 2 to 4 feet. .WEDNESDAY NIGHT...North winds 15 to 25 knots veering northeast in the late evening and overnight. Partly cloudy. Waves 2 to 4 feet. .THURSDAY...Northeast winds 10 to 15 knots. Partly sunny. Waves around 1 foot. .FRIDAY...East winds 15 to 20 knots. Mostly cloudy. Waves 1 to 2 feet. .SATURDAY...Northeast winds 15 to 20 knots backing north early in the afternoon. Mostly cloudy. Waves around 1 foot. $$ LMZ846-190930- Holland to Grand Haven MI- 423 AM EDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING... .REST OF TONIGHT...South winds 20 to 25 knots. Mostly cloudy with a chance of rain showers and a slight chance of thunderstorms. Waves 4 to 6 feet. .TUESDAY...South winds to 30 knots veering southwest 15 to 20 knots early in the afternoon. Rain showers likely and a slight chance of thunderstorms. Waves 5 to 7 feet. .TUESDAY NIGHT...Northwest winds 15 to 20 knots veering north after midnight. Partly cloudy. Waves 3 to 5 feet. .WEDNESDAY...North winds 15 to 25 knots. Mostly sunny. Waves 2 to 4 feet. .WEDNESDAY NIGHT...North winds 15 to 25 knots veering northeast in the late evening and overnight. Partly cloudy. Waves 3 to 5 feet subsiding to 1 to 2 feet after midnight. .THURSDAY...Northeast winds 10 to 20 knots. Partly sunny. Waves around 1 foot. .FRIDAY...East winds 15 to 25 knots. Mostly cloudy. Waves 1 to 2 feet. .SATURDAY...Northeast winds 15 to 20 knots backing northwest 10 to 15 knots early in the afternoon. Mostly cloudy. Waves around 1 foot. $$ LMZ845-190930- South Haven to Holland MI- 423 AM EDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING... .REST OF TONIGHT...South winds 20 to 25 knots. Partly cloudy with a chance of rain showers and a slight chance of thunderstorms. Waves 3 to 5 feet. .TUESDAY...Southwest winds 15 to 25 knots. Rain showers likely and a chance of thunderstorms. Waves 4 to 6 feet. .TUESDAY NIGHT...Northwest winds 10 to 20 knots. Partly cloudy. Waves 2 to 4 feet. .WEDNESDAY...North winds 15 to 25 knots. Mostly sunny. Waves 3 to 5 feet. .WEDNESDAY NIGHT...North winds 20 to 25 knots veering northeast 15 to 20 knots in the late evening and overnight. Partly cloudy. Waves 3 to 5 feet subsiding to 1 to 3 feet after midnight. .THURSDAY...Northeast winds 10 to 15 knots. Mostly sunny. Waves around 1 foot. .FRIDAY...East winds 15 to 20 knots. Mostly cloudy with a chance of rain showers. Waves around 1 foot. .SATURDAY...Northeast winds 10 to 20 knots backing northwest early in the afternoon. Mostly cloudy. Waves around 1 foot. $$ LMZ844-190930- St Joseph to South Haven MI- 423 AM EDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING... .REST OF TONIGHT...South winds around 20 knots. Partly cloudy with a chance of rain showers and a slight chance of thunderstorms. Waves 2 to 4 feet. .TUESDAY...Southwest winds 15 to 25 knots. Mostly cloudy with a chance of showers and thunderstorms. Waves 2 to 4 feet. .TUESDAY NIGHT...Northwest winds 10 to 20 knots. Partly cloudy with a chance of showers and 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. .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 1 to 2 feet. .SATURDAY...Northeast winds 10 to 15 knots backing northwest early in the afternoon. Mostly cloudy. Waves around 1 foot. $$