200 FZUS51 KBUF 232003 NSHBUF Nearshore Marine Forecast National Weather Service Buffalo NY 403 PM EDT Sun Aug 23 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. LEZ020-240300- Upper Niagara River and Buffalo Harbor- 403 PM EDT Sun Aug 23 2026 .TONIGHT...West winds 5 to 10 knots becoming southwest. A chance of showers and thunderstorms early, then a chance of showers from late evening on. .MONDAY...Southwest winds 5 to 15 knots becoming west. Showers likely. .MONDAY NIGHT...West winds 5 to 10 knots. A chance of showers in the evening. .TUESDAY...West winds 5 to 10 knots. Mostly sunny. .TUESDAY NIGHT...West winds less than 10 knots. Partly cloudy. .WEDNESDAY...South winds 10 knots or less. Partly cloudy. .THURSDAY...South winds 10 knots or less becoming southwest. A chance of showers and thunderstorms. .FRIDAY...West winds less than 10 knots. Partly cloudy. Winds and waves higher in and near thunderstorms. The water temperature off Buffalo is 76 degrees. $$ LOZ030-240300- Lower Niagara River- 403 PM EDT Sun Aug 23 2026 .TONIGHT...West winds 15 to 20 knots becoming southwest and diminishing to 5 to 10 knots. A chance of showers and thunderstorms early, then a chance of showers. .MONDAY...Southwest winds 10 to 15 knots becoming west. Showers likely. .MONDAY NIGHT...West winds 5 to 15 knots. A chance of showers in the evening. .TUESDAY...West winds 5 to 10 knots. Mostly sunny. .TUESDAY NIGHT...West winds less than 10 knots. Mainly clear in the evening, then becoming partly cloudy. .WEDNESDAY...Southwest winds 10 knots or less becoming south. Partly to mostly cloudy. .THURSDAY...South winds 5 to 15 knots becoming west less than 10 knots. A chance of showers and thunderstorms. .FRIDAY...West winds 10 knots or less becoming northwest. Partly cloudy. Winds and waves higher in and near thunderstorms. $$ LEZ040-041-240300- Buffalo to Ripley along Lake Erie- 403 PM EDT Sun Aug 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE MONDAY NIGHT... .TONIGHT...West winds 15 to 20 knots becoming southwest 5 to 15 knots. A chance of waterspouts. Showers with a chance of thunderstorms through the early overnight, then showers late. Waves 3 to 6 feet subsiding to 1 to 3 feet. Waves occasionally around 7 feet. .MONDAY...West winds 15 to 20 knots. A chance of waterspouts. Showers. Waves 3 to 6 feet building to 4 to 7 feet. Waves occasionally around 9 feet. .MONDAY NIGHT...West winds 15 to 20 knots diminishing to 10 to 15 knots. A chance of waterspouts. Showers. Waves 3 to 6 feet subsiding to 1 to 3 feet. Waves occasionally around 7 feet. .TUESDAY...Northwest winds 5 to 15 knots becoming west. A chance of waterspouts. Showers. Waves 1 to 3 feet subsiding to 1 foot or less. .TUESDAY NIGHT...West winds 10 knots or less becoming southwest. Becoming mainly clear. Waves 1 foot or less. .WEDNESDAY...Southwest winds 10 knots or less becoming south. Partly cloudy. Waves 1 foot or less. .THURSDAY...South winds 5 to 15 knots becoming southwest. A chance of showers and thunderstorms. Waves 2 feet or less. .FRIDAY...West winds 10 knots or less becoming north. A chance of showers during the day. Waves 1 foot or less. Winds and waves higher in and near thunderstorms. $$ LOZ042-240300- Niagara River to Hamlin Beach along Lake Ontario- 403 PM EDT Sun Aug 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .TONIGHT...West winds 15 to 25 knots becoming southwest. Showers with a chance of thunderstorms early. A chance of waterspouts. Waves 3 to 6 feet subsiding to 2 to 4 feet. Waves occasionally around 7 feet. .MONDAY...Southwest winds 15 to 20 knots becoming west. A chance of waterspouts. Showers likely. Waves 2 to 4 feet building to 3 to 6 feet. Waves occasionally around 7 feet. .MONDAY NIGHT...West winds 15 to 20 knots. A chance of waterspouts. Showers likely in the evening, then showers overnight. Waves 3 to 6 feet subsiding to 2 to 4 feet. Waves occasionally around 7 feet. .TUESDAY...Northwest winds 15 to 20 knots becoming west 10 to 15 knots. A chance of waterspouts. Showers. Waves 2 to 4 feet subsiding to 1 to 3 feet. .TUESDAY NIGHT...West winds 10 knots or less. Becoming mainly clear. Waves 2 feet or less. .WEDNESDAY...Southwest winds 10 knots or less becoming south. Partly to mostly cloudy. Waves 1 foot or less. .THURSDAY...South winds 5 to 15 knots becoming west. A chance of showers and thunderstorms. Waves 2 feet or less. .FRIDAY...West winds 5 to 15 knots becoming northwest. Partly cloudy. Waves 1 to 2 feet. Winds and waves higher in and near thunderstorms. $$ LOZ043-240300- Hamlin Beach to Sodus Bay along Lake Ontario including Irondequoit Bay- 403 PM EDT Sun Aug 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .TONIGHT...West winds 15 to 20 knots becoming southwest 10 to 15 knots. Showers likely with a chance of thunderstorms early, then a chance of showers and thunderstorms late this evening. A chance of waterspouts. Waves 3 to 6 feet subsiding to 2 to 4 feet. Waves occasionally around 7 feet. .MONDAY...Southwest winds 10 to 15 knots increasing to 15 to 20 knots. A chance of waterspouts. Showers with a chance of thunderstorms in the afternoon. Waves 1 to 3 feet building to 3 to 5 feet. Waves occasionally around 6 feet. .MONDAY NIGHT...West winds 15 to 20 knots. A chance of waterspouts. Showers with a chance of thunderstorms in the evening, then showers overnight. Waves 3 to 5 feet. Waves occasionally around 6 feet. .TUESDAY...West winds 15 to 20 knots. A chance of waterspouts. Showers. Waves 3 to 5 feet subsiding to 2 to 4 feet. Waves occasionally around 6 feet. .TUESDAY NIGHT...West winds 5 to 15 knots. A chance of waterspouts in the evening. Waves 1 to 3 feet subsiding to 1 foot or less. .WEDNESDAY...Southwest winds 10 knots or less becoming south. Partly cloudy. Waves 1 foot or less. .THURSDAY...South winds 5 to 10 knots becoming southwest. A chance of showers and thunderstorms. Waves 1 foot or less. .FRIDAY...West winds 5 to 15 knots becoming northwest. Partly cloudy. Waves 2 feet or less. Winds and waves higher in and near thunderstorms. The water temperature off Rochester is 60 degrees. $$ LOZ044-240300- Sodus Bay to Mexico Bay along Lake Ontario- 403 PM EDT Sun Aug 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .TONIGHT...West winds 15 to 20 knots becoming southwest 10 to 15 knots. A chance of waterspouts. Showers likely with a chance of thunderstorms this evening, then showers likely after midnight. A chance of showers late. Waves 3 to 6 feet. Waves occasionally around 7 feet. .MONDAY...Southwest winds 10 to 15 knots increasing to 15 to 20 knots. A chance of waterspouts. A chance of showers in the morning, then showers with a chance of thunderstorms in the afternoon. Waves 2 to 4 feet. .MONDAY NIGHT...Southwest winds 15 to 20 knots becoming west. A chance of waterspouts. Showers with a chance of thunderstorms in the evening, then showers overnight. Waves 3 to 6 feet. Waves occasionally around 7 feet. .TUESDAY...West winds 15 to 20 knots. A chance of waterspouts. Showers. Waves 3 to 5 feet subsiding to 2 to 4 feet. Waves occasionally around 6 feet. .TUESDAY NIGHT...West winds 5 to 15 knots. A chance of waterspouts in the evening. Waves 2 to 4 feet subsiding to 1 to 2 feet. .WEDNESDAY...Southwest winds 10 knots or less becoming southeast 10 to 15 knots. Partly cloudy. Waves 1 foot or less. .THURSDAY...South winds 5 to 15 knots becoming southwest. A chance of showers during the day, then showers likely with a chance of thunderstorms Thursday night. Waves 1 foot or less. .FRIDAY...Southwest winds 5 to 10 knots becoming northwest. A chance of showers during the day. Waves 2 feet or less. Winds and waves higher in and near thunderstorms. $$ LOZ045-240300- Mexico Bay to the Saint Lawrence River along Lake Ontario- 403 PM EDT Sun Aug 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .TONIGHT...Southwest winds 15 to 25 knots. A chance of waterspouts. Showers with a chance of thunderstorms this evening, then showers after midnight. Waves 4 to 7 feet subsiding to 3 to 5 feet. Waves occasionally around 9 feet. .MONDAY...Southwest winds 15 to 20 knots. A chance of waterspouts. Showers in the morning, then showers with a chance of thunderstorms in the afternoon. Waves 3 to 5 feet. Waves occasionally around 6 feet. .MONDAY NIGHT...Southwest winds 15 to 20 knots becoming west 10 to 15 knots. A chance of waterspouts. Showers with a chance of thunderstorms in the evening, then showers overnight. Waves 3 to 6 feet. Waves occasionally around 7 feet. .TUESDAY...West winds 10 to 15 knots. A chance of waterspouts. Showers likely in the morning, then a chance of showers in the afternoon. Waves 3 to 5 feet subsiding to 1 to 3 feet. Waves occasionally around 6 feet. .TUESDAY NIGHT...West winds 5 to 15 knots becoming southwest less than 10 knots. A chance of waterspouts in the evening. A chance of showers in the evening. Waves 1 to 3 feet. .WEDNESDAY...Southwest winds 10 knots or less becoming southeast and increasing to 15 to 20 knots. Mainly clear, then becoming partly cloudy. Waves 2 feet or less. .THURSDAY...South winds 15 to 20 knots diminishing to 10 to 15 knots. A chance of showers during the day, then showers with a chance of thunderstorms Thursday night. Waves 1 to 3 feet. .FRIDAY...Southwest winds 5 to 10 knots becoming northwest. A chance of showers during the day. Waves 2 feet or less. Winds and waves higher in and near thunderstorms. $$  835 FZUS53 KMKX 232010 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 310 PM CDT Sun Aug 23 2026 For waters within five nautical miles of shore on Lake Michigan LMZ643-240900- Sheboygan to Port Washington WI- 310 PM CDT Sun Aug 23 2026 .THROUGH EARLY EVENING...North wind 10 to 15 knots. Partly sunny. Waves 1 to 2 feet. .TONIGHT...North wind 10 to 15 knots backing northwest early in the morning. Mostly clear. Waves 1 to 2 feet. .MONDAY...Northwest wind 10 to 15 knots becoming north 5 to 10 knots early in the afternoon, then veering northeast late in the afternoon. Sunny. Waves around 1 foot. .MONDAY NIGHT...Southeast wind 5 to 10 knots veering west early in the morning. Mostly clear. Waves around 1 foot. .TUESDAY...West wind 5 to 10 knots backing southwest late in the morning, then becoming south 10 to 15 knots early in the afternoon rising to 15 to 20 knots late in the afternoon. Mostly sunny. Waves around 1 foot building to 2 to 4 feet late in the afternoon. $$ LMZ644-240900- Port Washington to North Point Light WI- 310 PM CDT Sun Aug 23 2026 .THROUGH EARLY EVENING...Northwest wind 10 to 15 knots. Partly sunny. Waves 1 to 2 feet. .TONIGHT...North wind 10 to 15 knots easing to 5 to 10 knots in the late evening and early morning, then backing northwest early in the morning. Mostly clear. Waves 1 to 2 feet. .MONDAY...Northwest wind 10 to 15 knots becoming north 5 to 10 knots early in the afternoon, then veering northeast late in the afternoon. Sunny. Waves 1 to 2 feet. .MONDAY NIGHT...Southeast wind 5 to 10 knots veering southwest late in the evening, then veering west after midnight becoming west 5 to 10 knots early in the morning. Mostly clear. Waves around 1 foot. .TUESDAY...West wind 5 to 10 knots backing southwest late in the morning, then becoming south 10 to 15 knots early in the afternoon becoming south 10 to 15 knots with gusts to around 20 knots late in the afternoon. Mostly sunny. Waves around 1 foot. $$ LMZ645-240900- North Point Light to Wind Point WI- 310 PM CDT Sun Aug 23 2026 .THROUGH EARLY EVENING...North wind 10 to 15 knots. Partly sunny. Waves 1 to 3 feet. .TONIGHT...North wind 10 to 15 knots easing to 5 to 10 knots late in the evening, then backing northwest after midnight becoming northwest 5 to 10 knots early in the morning. Mostly clear. Waves 1 to 2 feet. .MONDAY...Northwest wind 5 to 10 knots rising to 10 to 15 knots late in the morning, then veering north early in the afternoon becoming northeast 5 to 10 knots late in the afternoon. Sunny. Waves 1 to 2 feet. .MONDAY NIGHT...East wind 5 to 10 knots veering southwest late in the evening, then becoming southwest 5 to 10 knots after midnight veering west early in the morning. Mostly clear. Waves around 1 foot. .TUESDAY...West wind 5 to 10 knots backing southwest late in the morning, then becoming south 10 to 15 knots with gusts to around 20 knots in the afternoon. Mostly sunny. Waves around 1 foot. $$ LMZ646-240900- Wind Point WI to Winthrop Harbor IL- 310 PM CDT Sun Aug 23 2026 .THROUGH EARLY EVENING...North wind 10 to 15 knots backing northwest late in the afternoon. Partly sunny. Waves 1 to 2 feet. .TONIGHT...Northwest wind 10 to 15 knots easing to 5 to 10 knots late in the evening, then becoming northwest 5 to 10 knots after midnight. Mostly clear. Waves 1 to 2 feet. .MONDAY...Northwest wind 5 to 10 knots becoming north 10 to 15 knots early in the afternoon, then becoming northeast 5 to 10 knots late in the afternoon. Sunny. Waves 1 to 2 feet. .MONDAY NIGHT...East wind 5 to 10 knots veering west early in the morning. Mostly clear. Waves around 1 foot. .TUESDAY...West wind 5 to 10 knots backing southwest late in the morning, then becoming south 10 to 15 knots in the afternoon. Sunny. Waves around 1 foot. $$ See Lake Michigan Open Waters Forecast for Wednesday through Friday.  938 FZUS53 KDLH 232011 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 311 PM CDT Sun Aug 23 2026 For waters within five nautical miles of shore on Lake Superior. Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. LSZ140-240400- Grand Portage to Grand Marais MN- 311 PM CDT Sun Aug 23 2026 .TONIGHT...Southwest wind 5 to 10 knots becoming northwest late in the night. Mostly clear. Waves 1 foot or less. .MONDAY...North wind 5 to 10 knots becoming southwest in the afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Southwest wind 5 to 10 knots. Mostly cloudy. Waves 1 foot or less. .TUESDAY...Southeast wind 5 knots. Slight chance of rain showers in the morning, then rain showers likely and chance of thunderstorms in the afternoon. Waves 1 foot or less. $$ LSZ141-240400- Grand Marais to Taconite Harbor MN- 311 PM CDT Sun Aug 23 2026 .TONIGHT...Southwest wind 5 knots becoming north after midnight. Partly cloudy. Waves 1 foot or less. .MONDAY...North wind 5 knots early in the morning becoming variable 10 knots or less, then becoming southwest 5 knots in the afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Variable winds 10 knots or less. Mostly cloudy. Waves 1 foot or less. .TUESDAY...Northeast wind 5 knots becoming southeast in the late morning and afternoon. Chance of rain showers in the morning, then rain showers likely and chance of thunderstorms in the afternoon. Waves 1 foot or less. $$ LSZ142-240400- Taconite Harbor to Silver Bay Harbor MN- 311 PM CDT Sun Aug 23 2026 .TONIGHT...Southwest wind 5 knots early in the evening becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. .MONDAY...Variable winds 10 knots or less. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Variable winds 10 knots or less. Slight chance of rain showers after midnight. Waves 1 foot or less. .TUESDAY...Variable winds 10 knots or less becoming southeast 5 knots in the late morning and afternoon. Chance of rain showers in the morning, then rain showers likely and chance of thunderstorms in the afternoon. Waves 1 foot or less. $$ LSZ143-240400- Silver Bay Harbor to Two Harbors MN- 311 PM CDT Sun Aug 23 2026 .TONIGHT...North wind 5 knots in the evening becoming variable 10 knots or less. Partly cloudy. Waves 1 foot or less. .MONDAY...Variable winds 10 knots or less becoming east 5 knots in the afternoon. Partly sunny. Waves 1 foot or less. .MONDAY NIGHT...Northeast wind 5 knots. Slight chance of rain showers after midnight. Waves 1 foot or less. .TUESDAY...Variable winds 10 knots or less becoming southeast 5 knots in the late morning and afternoon. Chance of rain showers and slight chance of thunderstorms in the morning, then rain showers likely and chance of thunderstorms in the afternoon. Waves 1 foot or less. $$ LSZ144-240400- Two Harbors to Duluth MN- 311 PM CDT Sun Aug 23 2026 .TONIGHT...Northeast wind 5 knots in the evening becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. .MONDAY...Variable winds 10 knots or less becoming east 5 to 10 knots in the late morning and afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Northeast wind 5 to 10 knots. Slight chance of rain showers after midnight. Waves 1 foot or less. .TUESDAY...East wind 5 knots becoming south in the late morning and afternoon. Chance of rain showers and slight chance of thunderstorms in the morning, then rain showers likely and chance of thunderstorms in the afternoon. Waves 1 foot or less. $$ LSZ145-240400- Duluth MN to Port Wing WI- 311 PM CDT Sun Aug 23 2026 .TONIGHT...Northeast wind 5 knots in the evening becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. .MONDAY...Variable winds 10 knots or less becoming northeast 5 to 10 knots in the late morning and afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...East wind 5 to 10 knots. Slight chance of rain showers after midnight. Waves 1 foot or less. .TUESDAY...South wind 5 knots becoming southwest in the afternoon. Chance of rain showers and slight chance of thunderstorms in the morning, then rain showers likely and chance of thunderstorms in the afternoon. Waves 1 foot or less. $$ LSZ146-240400- Port Wing to Sand Island WI- 311 PM CDT Sun Aug 23 2026 .TONIGHT...East wind 5 knots early in the evening becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. .MONDAY...Variable winds 10 knots or less becoming northeast 5 knots in the afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...East wind 5 knots in the evening becoming variable 10 knots or less. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. .TUESDAY...South wind 5 knots becoming northeast late in the afternoon. Slight chance of showers and thunderstorms in the morning, then rain showers likely and chance of thunderstorms in the afternoon. Waves 1 foot or less. $$ LSZ147-240400- Sand Island to Bayfield WI- 311 PM CDT Sun Aug 23 2026 .TONIGHT...South wind 5 knots early in the evening becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. .MONDAY...Variable winds 10 knots or less becoming northeast 5 knots early in the afternoon, then becoming east late in the afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Southeast wind 5 knots. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. .TUESDAY...South wind 5 knots becoming east late in the afternoon. Slight chance of rain showers in the morning, then rain showers likely and chance of thunderstorms in the afternoon. Waves 1 foot or less. $$ LSZ150-240400- Outer Apostle Islands Beyond 5 NM from Mainland- 311 PM CDT Sun Aug 23 2026 .TONIGHT...Southwest wind 5 knots becoming northwest after midnight. Mostly clear. Waves 1 foot or less. .MONDAY...North wind 5 knots becoming southeast late in the afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Southeast wind 5 knots. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. .TUESDAY...South wind 5 knots becoming southeast late in the afternoon. Slight chance of rain showers in the morning, then rain showers likely and chance of thunderstorms in the afternoon. Waves 1 foot or less. $$ LSZ121-240400- Chequamegon Bay-Bayfield to Oak Point WI- 311 PM CDT Sun Aug 23 2026 .TONIGHT...Southeast wind 5 knots early in the evening becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. .MONDAY...Variable winds 10 knots or less becoming east 5 knots in the afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...East wind 5 knots in the evening becoming variable 10 knots or less, then becoming south 5 knots early in the morning. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. .TUESDAY...South wind 5 to 10 knots. Slight chance of rain showers in the morning. Rain showers likely and chance of thunderstorms in the afternoon. Waves 1 foot or less. $$ LSZ148-240400- Oak Point to Saxon Harbor WI- 311 PM CDT Sun Aug 23 2026 .TONIGHT...Southeast wind 5 knots becoming southwest after midnight. Mostly clear. Waves 1 foot or less. .MONDAY...West wind 5 knots early in the morning becoming variable 10 knots or less, then becoming east 5 knots in the afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...East wind 5 knots becoming south after midnight. Partly cloudy. Waves 1 foot or less. .TUESDAY...South wind 5 to 10 knots. Slight chance of rain showers in the morning. Rain showers likely and chance of thunderstorms in the afternoon. Waves 1 foot or less. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH