679 FZUS51 KBUF 172006 NSHBUF Nearshore Marine Forecast National Weather Service Buffalo NY 405 PM EDT Fri Apr 17 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. LEZ020-180300- Upper Niagara River and Buffalo Harbor- 405 PM EDT Fri Apr 17 2026 .TONIGHT...Light and variable winds becoming southeast 5 to 10 knots. Partly cloudy this evening, then becoming mainly clear. .SATURDAY...South winds 10 to 15 knots becoming southwest. A chance of showers in the morning, then showers in the afternoon. .SATURDAY NIGHT...West winds 5 to 15 knots. Rain showers likely. .SUNDAY...West winds 5 to 15 knots. A chance of rain showers. .SUNDAY NIGHT...West winds 5 to 15 knots becoming northwest. A chance of rain showers in the evening. .MONDAY...Northwest winds 10 knots or less becoming southwest. Partly cloudy. .TUESDAY...South winds 5 to 10 knots becoming west. Partly to mostly cloudy. .WEDNESDAY...North winds 5 to 10 knots becoming light and variable. Becoming mainly clear. The water temperature off Buffalo is 42 degrees. $$ LOZ030-180300- Lower Niagara River- 405 PM EDT Fri Apr 17 2026 .TONIGHT...East winds 10 knots or less becoming southeast. Becoming mainly clear. .SATURDAY...South winds 10 to 15 knots becoming southwest. A chance of showers in the morning, then showers in the afternoon. .SATURDAY NIGHT...West winds 5 to 15 knots. Rain showers likely. .SUNDAY...West winds 5 to 15 knots. A chance of rain showers. .SUNDAY NIGHT...West winds 5 to 15 knots becoming northwest. A chance of rain showers in the evening. .MONDAY...Northwest winds 10 knots or less becoming southwest. Partly cloudy. .TUESDAY...South winds 5 to 15 knots becoming west. Partly to mostly cloudy. .WEDNESDAY...North winds 5 to 10 knots becoming light and variable. Becoming mainly clear. $$ LEZ040-041-180300- Buffalo to Ripley along Lake Erie- 405 PM EDT Fri Apr 17 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 2 AM EDT SATURDAY... .TONIGHT...Light and variable winds becoming southeast 10 to 15 knots. Areas of fog. Waves 1 foot or less. .SATURDAY...South winds 15 to 20 knots becoming southwest. A chance of showers in the morning, then showers in the afternoon. Waves 1 to 3 feet. .SATURDAY NIGHT...Southwest winds 15 to 20 knots becoming west 10 to 15 knots. Rain showers likely. Waves 2 to 4 feet subsiding to 1 to 3 feet. .SUNDAY...West winds 10 to 15 knots increasing to 15 to 20 knots. A chance of rain showers in the morning, then a chance of rain and snow showers in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet. .SUNDAY NIGHT...West winds 5 to 15 knots becoming northwest. A chance of rain showers. Waves 1 to 3 feet. .MONDAY...Northwest winds 5 to 10 knots becoming south. Partly cloudy. Waves 2 feet or less. .TUESDAY...South winds 5 to 15 knots becoming west. Partly to mostly cloudy. Waves 1 foot or less. .WEDNESDAY...North winds 10 knots or less becoming east. Becoming mainly clear. Waves 2 feet or less. $$ LOZ042-180300- Niagara River to Hamlin Beach along Lake Ontario- 405 PM EDT Fri Apr 17 2026 .TONIGHT...East winds 10 knots or less becoming southeast. Partly to mostly cloudy. Waves 1 foot or less. .SATURDAY...Southeast winds 10 to 15 knots becoming southwest 15 to 20 knots. Showers in the afternoon. Waves 1 to 3 feet. .SATURDAY NIGHT...West winds 15 to 20 knots diminishing to 10 to 15 knots. Rain showers likely. Waves 2 to 4 feet. .SUNDAY...West winds 10 to 15 knots increasing to 15 to 20 knots. A chance of rain showers. Waves 2 to 4 feet. .SUNDAY NIGHT...West winds 15 to 20 knots becoming northwest. A chance of rain showers in the evening. Waves 3 to 5 feet. Waves occasionally around 6 feet. .MONDAY...Northwest winds 15 to 20 knots becoming southwest 5 to 15 knots. Becoming mainly clear. Waves 2 to 4 feet subsiding to 1 to 3 feet. .TUESDAY...South winds 10 to 15 knots becoming west. A chance of rain showers. Waves 1 to 3 feet. .WEDNESDAY...North winds 5 to 15 knots becoming northeast less than 10 knots. Becoming mainly clear. Waves 2 feet or less. $$ LOZ043-044-180300- Hamlin Beach to Mexico Bay along Lake Ontario including Irondequoit Bay- 405 PM EDT Fri Apr 17 2026 .TONIGHT...West winds 10 knots or less becoming southeast 10 to 15 knots. Mostly cloudy. Waves 1 foot or less. .SATURDAY...Southeast winds 10 to 15 knots becoming south 15 to 20 knots. Showers in the afternoon. Waves 1 to 3 feet. .SATURDAY NIGHT...Southwest winds 15 to 20 knots becoming west. Rain showers. Waves 1 to 3 feet building to 3 to 5 feet. Waves occasionally around 6 feet. .SUNDAY...West winds 10 to 15 knots increasing to 15 to 20 knots. Rain showers in the morning, then a chance of rain showers in the afternoon. Waves 2 to 4 feet building to 3 to 6 feet. Waves occasionally around 7 feet. .SUNDAY NIGHT...West winds 15 to 20 knots becoming northwest. Partly cloudy. Waves 3 to 6 feet. Waves occasionally around 7 feet. .MONDAY...Northwest winds 15 to 20 knots becoming southwest 5 to 15 knots. Becoming mainly clear. Waves 3 to 5 feet subsiding to 1 to 3 feet. Waves occasionally around 6 feet. .TUESDAY...South winds 10 to 15 knots becoming west. A chance of rain showers. Waves 1 to 3 feet. .WEDNESDAY...Northwest winds 5 to 15 knots becoming north. Becoming mainly clear. Waves 1 to 3 feet subsiding to 1 foot or less. The water temperature off Rochester is 42 degrees. $$ LOZ045-180300- Mexico Bay to the Saint Lawrence River along Lake Ontario- 405 PM EDT Fri Apr 17 2026 .TONIGHT...North winds 10 knots or less becoming south. Mainly clear this evening, then becoming mostly cloudy. Waves 1 foot or less. .SATURDAY...Southeast winds 15 to 20 knots becoming south. A chance of showers in the afternoon. Waves 1 to 3 feet building to 3 to 5 feet. Waves occasionally around 6 feet. .SATURDAY NIGHT...South winds 15 to 25 knots becoming west. Rain showers. Waves 3 to 5 feet. Waves occasionally around 6 feet. .SUNDAY...West winds 10 to 15 knots increasing to 15 to 20 knots. Rain showers in the morning, then a chance of rain showers in the afternoon. Waves 2 to 4 feet building to 3 to 6 feet. Waves occasionally around 7 feet. .SUNDAY NIGHT...West winds 15 to 20 knots becoming northwest. Partly cloudy. Waves 3 to 6 feet. Waves occasionally around 7 feet. .MONDAY...Northwest winds 5 to 15 knots becoming southwest. Becoming mainly clear. Waves 3 to 5 feet subsiding to 1 to 3 feet. Waves occasionally around 6 feet. .TUESDAY...South winds 15 to 20 knots becoming southwest 10 to 15 knots. A chance of rain showers. Waves 1 to 3 feet. .WEDNESDAY...Northwest winds 5 to 15 knots becoming northeast less than 10 knots. Partly cloudy. Waves 1 to 3 feet subsiding to 1 foot or less. $$  457 FZUS53 KGRB 172008 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 307 PM CDT Fri Apr 17 2026 For waters within five nautical miles of shore on Lake Michigan LMZ522-180400- Green Bay south of line from Oconto WI to Little Sturgeon Bay WI- 307 PM CDT Fri Apr 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .LATE THIS AFTERNOON...S wind 15 to 25 kts. Waves 2 to 4 ft. A chance of showers and thunderstorms. .TONIGHT...S wind 15 to 25 kts veering SW 10 to 15 kts, then veering NW 10 to 20 kts after midnight. Waves 2 to 4 ft subsiding to 1 to 3 ft after midnight. Patchy fog. a chance of thunderstorms in the evening. Rain showers. .SATURDAY...W wind 15 to 25 kts. Waves 1 to 3 ft. Partly cloudy. A Small Craft Advisory may be needed. .SATURDAY NIGHT...W wind 10 to 15 kts. Waves 1 to 3 ft. Mostly clear. .SUNDAY...NW wind 10 to 15 kts veering N early in the afternoon. Waves 2 ft or less. Partly cloudy. $$ LMZ521-180400- Green Bay south of line from Cedar River to Rock Island Passage and north of a line from Oconto WI to Little Sturgeon Bay WI- 307 PM CDT Fri Apr 17 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 4 AM CDT SATURDAY... ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .LATE THIS AFTERNOON...S wind 15 to 25 kts. Waves 2 to 4 ft. Patchy dense fog. a chance of showers and thunderstorms. .TONIGHT...S wind 15 to 25 kts veering NW 10 to 20 kts after midnight. Waves 2 to 4 ft subsiding to 1 to 3 ft after midnight. Patchy dense fog. a chance of showers and thunderstorms in the evening. Rain showers likely after midnight. .SATURDAY...W wind 10 to 15 kts. Waves 1 to 3 ft. Partly cloudy. .SATURDAY NIGHT...W wind 10 to 15 kts. Waves 1 to 3 ft. Partly cloudy. .SUNDAY...NW wind 10 to 15 kts veering N early in the afternoon. Waves 2 ft or less. Partly cloudy. $$ LMZ541-180400- Rock Island Passage to Sturgeon Bay WI- 307 PM CDT Fri Apr 17 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 4 AM CDT SATURDAY... ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING... .LATE THIS AFTERNOON...S wind 15 to 25 kts. Waves 4 to 7 ft. Patchy dense fog. a slight chance of showers and thunderstorms. .TONIGHT...S wind 15 to 25 kts veering NW after midnight. Waves 5 to 8 ft. Patchy dense fog. a chance of thunderstorms in the evening. Rain showers likely. .SATURDAY...NW wind 15 to 25 kts backing W 10 to 15 kts in the late morning and afternoon. Waves 3 to 5 ft subsiding to 1 to 3 ft in the afternoon. Partly cloudy. .SATURDAY NIGHT...W wind 10 to 15 kts. Waves 1 to 3 ft. Partly cloudy. .SUNDAY...NW wind 10 to 15 kts veering N early in the afternoon. Waves 2 ft or less. Partly cloudy. $$ LMZ542-543-180400- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 307 PM CDT Fri Apr 17 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 4 AM CDT SATURDAY... ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING... .LATE THIS AFTERNOON...S wind 15 to 25 kts. Waves 4 to 7 ft. Patchy dense fog. a chance of showers and a slight chance of thunderstorms. .TONIGHT...S wind 15 to 25 kts veering W after midnight. Gusts to 35 kts. Waves 5 to 8 ft subsiding to 4 to 7 ft after midnight. Patchy dense fog. a chance of thunderstorms in the evening. A chance of showers. .SATURDAY...W wind 15 to 25 kts. Waves 3 to 5 ft subsiding to 1 to 3 ft in the afternoon. Partly cloudy in the morning then clearing. .SATURDAY NIGHT...W wind 15 to 25 kts decreasing to 10 to 15 kts in the late evening and overnight. Waves 1 to 3 ft. Mostly clear. A Small Craft Advisory may be needed. .SUNDAY...NW wind 10 to 15 kts veering N early in the afternoon. Waves 2 ft or less. Partly cloudy. $$ See Lake Michigan Open Lake Forecast for Monday through Wednesday. Wave height forecast is for ice free areas.  674 FZUS53 KMKX 172011 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 311 PM CDT Fri Apr 17 2026 For waters within five nautical miles of shore on Lake Michigan LMZ643-180900- Sheboygan to Port Washington WI- 311 PM CDT Fri Apr 17 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 4 AM CDT SATURDAY... ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING... .THROUGH EARLY EVENING...South wind 5 to 10 knots rising to 15 to 25 knots late in the afternoon. Partly sunny with chance of thunderstorms and slight chance of showers. Patchy dense fog. Some thunderstorms may be severe with damaging winds, large hail, and tornadoes. Waves 3 to 5 feet. .TONIGHT...South wind 15 to 25 knots veering southwest 15 to 20 knots after midnight, then veering west early in the morning. Gusts up to 30 knots. Patchy fog through the night. showers and a chance of thunderstorms through around midnight. Rain showers likely and slight chance of thunderstorms after midnight. Waves 5 to 7 feet subsiding to 3 to 4 feet. .SATURDAY...Northwest wind 15 to 25 knots easing to 10 to 20 knots late in the morning, then backing west in the afternoon. Gusts up to 30 knots. Mostly cloudy in the morning then becoming mostly sunny. Waves 3 to 4 feet. .SATURDAY NIGHT...West wind 15 to 25 knots becoming 15 to 20 knots late in the evening, then easing to 10 to 15 knots after midnight becoming west 10 to 15 knots early in the morning. Partly cloudy. Waves 2 to 4 feet subsiding to 1 to 2 feet in the late evening and overnight. .SUNDAY...West wind 10 to 15 knots veering northwest late in the afternoon. Slight chance of showers in the afternoon. Waves around 1 foot. $$ LMZ644-180900- Port Washington to North Point Light WI- 311 PM CDT Fri Apr 17 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 4 AM CDT SATURDAY... ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING... .THROUGH EARLY EVENING...Southeast wind 5 to 15 knots becoming south 15 to 20 knots late in the afternoon. Showers likely and a chance of thunderstorms. Patchy dense fog. Some thunderstorms may be severe with damaging winds, large hail, and tornadoes. Waves 3 to 5 feet. .TONIGHT...South wind 15 to 20 knots veering west early in the morning. Gusts up to 25 knots. Patchy fog until early morning. showers and a chance of thunderstorms through around midnight. Rain showers likely and a chance of thunderstorms after midnight. Waves 4 to 6 feet subsiding to 3 to 5 feet late in the evening, then subsiding to 3 to 4 feet after midnight. .SATURDAY...Northwest wind 15 to 25 knots becoming west 10 to 20 knots in the afternoon. Mostly cloudy in the morning then becoming mostly sunny. Waves 2 to 4 feet. .SATURDAY NIGHT...West wind 15 to 25 knots becoming 15 to 20 knots late in the evening, then becoming west 15 to 20 knots after midnight easing to 10 to 15 knots early in the morning. Partly cloudy through around midnight then clearing. Waves 2 to 4 feet subsiding to 1 to 2 feet in the late evening and overnight. .SUNDAY...West wind 10 to 15 knots veering northwest late in the afternoon. Slight chance of showers in the afternoon. Waves 1 to 2 feet. $$ LMZ645-180900- North Point Light to Wind Point WI- 311 PM CDT Fri Apr 17 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 4 AM CDT SATURDAY... ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING... .THROUGH EARLY EVENING...Southeast wind 5 to 20 knots rising to 15 to 20 knots late in the afternoon. Partly sunny with chance of thunderstorms and slight chance of showers. Patchy dense fog. Some thunderstorms may be severe with damaging winds, large hail, and tornadoes. Waves 3 to 4 feet. .TONIGHT...South wind 15 to 20 knots becoming 10 to 20 knots late in the evening, then veering southwest 10 to 15 knots after midnight becoming west 15 to 20 knots early in the morning. Gusts up to 25 knots. Patchy fog until early morning. chance of thunderstorms through around midnight. Rain showers through the night. Chance of thunderstorms after midnight. Waves 3 to 5 feet subsiding to 3 to 4 feet after midnight. .SATURDAY...Northwest wind 15 to 25 knots easing to 10 to 20 knots late in the morning, then backing west 15 to 20 knots in the afternoon. Mostly cloudy in the morning then becoming mostly sunny. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon. .SATURDAY NIGHT...West wind 15 to 20 knots easing to 10 to 15 knots after midnight, then becoming west 10 to 15 knots early in the morning. Partly cloudy through around midnight then clearing. Waves 2 to 4 feet subsiding to 1 to 2 feet in the late evening and overnight. .SUNDAY...West wind 10 to 15 knots veering northwest late in the afternoon. Slight chance of showers in the afternoon. Waves 1 to 2 feet. $$ LMZ646-180900- Wind Point WI to Winthrop Harbor IL- 311 PM CDT Fri Apr 17 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 4 AM CDT SATURDAY... ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING... .THROUGH EARLY EVENING...Southeast wind 5 to 15 knots rising to 15 to 20 knots late in the afternoon. Partly sunny with chance of thunderstorms and slight chance of showers. Patchy dense fog. Some thunderstorms may be severe with damaging winds, large hail, and tornadoes. Waves 3 to 4 feet. .TONIGHT...South wind 15 to 20 knots easing to 10 to 15 knots after midnight, then becoming west 15 to 20 knots early in the morning. Gusts up to 25 knots. Patchy fog until early morning. chance of thunderstorms through around midnight. Rain showers through the night. Chance of thunderstorms after midnight. Waves 4 to 6 feet subsiding to 3 to 5 feet late in the evening, then subsiding to 3 to 4 feet after midnight. .SATURDAY...Northwest wind 15 to 20 knots backing west in the afternoon. Gusts up to 25 knots. Mostly cloudy in the morning then clearing. Waves 2 to 4 feet subsiding to 1 to 2 feet in the afternoon. .SATURDAY NIGHT...West wind 15 to 20 knots with gusts to around 25 knots easing to 10 to 15 knots after midnight, then becoming west 10 to 15 knots early in the morning. Partly cloudy through around midnight then becoming clear. Waves 1 to 2 feet. .SUNDAY...West wind 10 to 15 knots veering northwest late in the afternoon. Slight chance of showers in the afternoon. Waves around 1 foot. $$ See Lake Michigan Open Waters Forecast for Monday through Wednesday.  235 FZUS53 KDLH 172029 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 329 PM CDT Fri Apr 17 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. LSZ140-180400- Grand Portage to Grand Marais MN- 329 PM CDT Fri Apr 17 2026 ...GALE WARNING IN EFFECT UNTIL 3 AM CDT SATURDAY... .TONIGHT...Northwest wind 15 to 20 knots. Gusts up to 35 knots increasing to 40 knots after midnight, then decreasing to 30 knots late in the night. Patchy fog early in the evening. Rain likely and chance of thunderstorms early in the evening, then chance of rain late in the evening. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the night. .SATURDAY...West wind 20 to 25 knots. Gusts up to 25 knots increasing to 30 knots in the late morning and afternoon. Partly sunny. Waves 3 to 5 feet. A small craft advisory may be needed. .SATURDAY NIGHT...Northwest wind 20 to 25 knots. Gusts up to 30 knots decreasing to 25 knots early in the morning. Mostly cloudy in the evening then becoming partly cloudy. Waves 3 to 5 feet subsiding to 1 to 3 feet early in the morning. A small craft advisory may be needed. .SUNDAY...Northwest wind 15 to 20 knots. Gusts up to 25 knots. Mostly sunny. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ141-180400- Grand Marais to Taconite Harbor MN- 329 PM CDT Fri Apr 17 2026 ...GALE WARNING IN EFFECT UNTIL 3 AM CDT SATURDAY... .TONIGHT...Northwest wind 15 to 20 knots. Gales up to 40 knots decreasing to 35 knots late in the evening, then increasing to 40 knots after midnight decreasing to 30 knots late in the night. Rain likely and chance of thunderstorms early in the evening. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the night. .SATURDAY...West wind 15 to 20 knots. Gusts up to 25 knots increasing to 30 knots in the late morning and afternoon. Mostly sunny. Waves 2 to 4 feet. .SATURDAY NIGHT...Northwest wind 15 to 20 knots. Gusts up to 30 knots decreasing to 25 knots after midnight. Partly cloudy. Waves 1 to 3 feet. .SUNDAY...Northwest wind 5 to 10 knots. Gusts up to 20 knots in the morning. Mostly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ142-180400- Taconite Harbor to Silver Bay Harbor MN- 329 PM CDT Fri Apr 17 2026 ...GALE WARNING IN EFFECT UNTIL 3 AM CDT SATURDAY... .TONIGHT...Northwest wind 15 to 20 knots. Gales up to 40 knots decreasing to 35 knots late in the evening, then increasing to 40 knots after midnight decreasing to 30 knots late in the night. Chance of rain and thunderstorms early in the evening. Waves 1 to 3 feet. .SATURDAY...West wind 15 to 20 knots with gusts to around 25 knots. Mostly sunny. Waves 1 to 3 feet. .SATURDAY NIGHT...Northwest wind 15 to 20 knots with gusts to around 25 knots easing to 5 to 10 knots with gusts to around 20 knots after midnight. Partly cloudy. Waves 1 to 2 feet. .SUNDAY...Northwest wind 5 to 10 knots. Sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ143-180400- Silver Bay Harbor to Two Harbors MN- 329 PM CDT Fri Apr 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING... .TONIGHT...West wind 15 to 20 knots. Gusts up to 30 knots increasing to 35 knots late in the evening, then decreasing to 30 knots after midnight decreasing to 25 knots late in the night. Chance of rain and thunderstorms early in the evening. Waves 1 to 2 feet. .SATURDAY...West wind 15 to 20 knots with gusts to around 25 knots. Mostly sunny. Waves 1 to 2 feet building to 1 to 3 feet in the afternoon. .SATURDAY NIGHT...Northwest wind 15 to 20 knots with gusts to around 25 knots easing to 5 to 10 knots with gusts to around 20 knots after midnight. Partly cloudy. Waves 1 to 2 feet. .SUNDAY...Northwest wind 5 to 10 knots. Sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ144-180400- Two Harbors to Duluth MN- 329 PM CDT Fri Apr 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING... .TONIGHT...West wind 15 to 20 knots with gusts to around 30 knots. Slight chance of rain and thunderstorms early in the evening. Waves 1 to 3 feet. .SATURDAY...West wind 15 to 20 knots with gusts to around 25 knots. Partly sunny. Waves 1 to 3 feet. .SATURDAY NIGHT...Northwest wind 20 to 25 knots easing to 10 to 15 knots with gusts to around 20 knots after midnight. Partly cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. .SUNDAY...Northwest wind 5 to 10 knots. Sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ145-180400- Duluth MN to Port Wing WI- 329 PM CDT Fri Apr 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING... .TONIGHT...West wind 15 to 20 knots with gusts to around 30 knots. Slight chance of rain and thunderstorms early in the evening. Waves 1 to 3 feet building to 2 to 4 feet in the late evening and overnight. .SATURDAY...West wind 15 to 20 knots. Gusts up to 30 knots decreasing to 25 knots in the late morning and afternoon. Partly sunny. Waves 3 to 5 feet. .SATURDAY NIGHT...West wind 20 to 25 knots becoming northwest 10 to 15 knots with gusts to around 20 knots after midnight. Partly cloudy. Waves 3 to 5 feet subsiding to 1 to 3 feet after midnight. .SUNDAY...Northwest wind 5 to 10 knots. Sunny. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ146-180400- Port Wing to Sand Island WI- 329 PM CDT Fri Apr 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING... .TONIGHT...West wind 5 to 15 knots with gusts to around 25 knots rising to 15 to 20 knots with gusts to around 30 knots in the late evening and overnight. Chance of rain and thunderstorms early in the evening. Waves 3 to 5 feet. .SATURDAY...West wind 20 to 25 knots easing to 10 to 20 knots late in the morning, then rising to 20 to 25 knots in the afternoon. Gusts up to 30 knots. Partly sunny. Waves 4 to 6 feet. Waves occasionally to 7 feet. .SATURDAY NIGHT...Northwest wind 15 to 20 knots. Gusts up to 25 knots decreasing to 20 knots after midnight. Mostly cloudy in the evening then becoming partly cloudy. Waves 3 to 5 feet subsiding to 1 to 3 feet after midnight. Waves occasionally to 7 feet. .SUNDAY...Northwest wind 5 to 10 knots. Sunny. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ147-180400- Sand Island to Bayfield WI- 329 PM CDT Fri Apr 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING... .TONIGHT...West wind 15 to 20 knots. Gusts up to 25 knots increasing to 30 knots after midnight. Chance of rain and thunderstorms early in the evening. Waves 3 to 5 feet. .SATURDAY...West wind 20 to 25 knots with gusts to around 30 knots. Partly sunny. Waves 4 to 6 feet. Waves occasionally to 7 feet. .SATURDAY NIGHT...Northwest wind 15 to 20 knots. Gusts up to 25 knots decreasing to 20 knots after midnight. Partly cloudy. Waves 3 to 5 feet subsiding to 1 to 3 feet after midnight. Waves occasionally to 7 feet. .SUNDAY...Northwest wind 5 to 10 knots. Sunny. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ150-180400- Outer Apostle Islands Beyond 5 NM from Mainland- 329 PM CDT Fri Apr 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE SATURDAY NIGHT... .TONIGHT...West wind 20 to 25 knots. Gusts up to 25 knots increasing to 30 knots in the late evening and overnight. Patchy fog early in the evening. Rain likely and chance of thunderstorms early in the evening, then slight chance of rain late in the evening. Waves 4 to 6 feet. Waves occasionally to 7 feet. .SATURDAY...West wind 20 to 25 knots with gusts to around 30 knots. Partly sunny. Waves 4 to 7 feet. Waves occasionally to 9 feet. .SATURDAY NIGHT...Northwest wind 15 to 20 knots. Gusts up to 30 knots decreasing to 20 knots. Mostly cloudy in the evening then becoming partly cloudy. Waves 4 to 6 feet subsiding to 1 to 3 feet early in the morning. Waves occasionally to 8 feet. .SUNDAY...Northwest wind 10 to 15 knots. Gusts up to 20 knots early in the morning. Mostly sunny. Waves 1 to 3 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ121-180400- Chequamegon Bay-Bayfield to Oak Point WI- 329 PM CDT Fri Apr 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING... .TONIGHT...West wind 10 to 15 knots with gusts to around 25 knots. Chance of rain and thunderstorms early in the evening. Waves 1 to 2 feet. .SATURDAY...West wind 15 to 20 knots with gusts to around 25 knots. Mostly sunny. Waves 1 to 2 feet. .SATURDAY NIGHT...Northwest wind 10 to 15 knots. Gusts up to 25 knots. Partly cloudy. Waves 1 to 2 feet. .SUNDAY...Northwest wind 5 to 10 knots. Sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ148-180400- Oak Point to Saxon Harbor WI- 329 PM CDT Fri Apr 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING... .TONIGHT...West wind 15 to 20 knots with gusts to around 25 knots. Patchy fog early in the evening. Chance of rain and thunderstorms early in the evening, then slight chance of rain late in the evening. Waves 1 to 3 feet building to 2 to 4 feet after midnight. .SATURDAY...West wind 15 to 20 knots. Gusts up to 25 knots increasing to 30 knots late in the afternoon. Mostly sunny. Waves 2 to 4 feet. .SATURDAY NIGHT...Northwest wind 15 to 20 knots. Gusts up to 25 knots decreasing to 20 knots after midnight. Mostly cloudy in the evening then becoming partly cloudy. Waves 2 to 4 feet subsiding to 1 to 2 feet after midnight. .SUNDAY...Northwest wind 10 to 15 knots easing to 5 knots late in the afternoon. Sunny. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH  092 FZUS53 KLOT 172037 AAA NSHLOT Nearshore Marine Forecast...UPDATED National Weather Service Chicago/Romeoville IL 337 PM CDT Fri Apr 17 2026 For waters within five nautical miles of shore on Lake Michigan Waves are provided as a range of significant wave heights, which is the average of the highest 1/3 of the waves, along with the average height of the highest 10 percent of the waves which will occasionally be encountered. LMZ740>742-180315- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 337 PM CDT Fri Apr 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING... ...TORNADO WATCH 131 IN EFFECT UNTIL 11 PM CDT THIS EVENING... .TONIGHT...South winds to 30 kt becoming west 20 to 25 kt late. Showers and thunderstorms in the evening, then showers and a chance of thunderstorms after midnight. Some thunderstorms may be severe with damaging winds and large hail in the evening. Waves 3 to 5 ft subsiding to 2 to 4 ft. .SATURDAY...Northwest winds 20 to 25 kt becoming west. Slight chance of showers in the morning. Waves 2 to 4 ft. .SATURDAY NIGHT...West winds 15 to 20 kt diminishing to 10 to 15 kt. Partly cloudy in the evening, then becoming mostly clear. Waves 1 to 3 ft. .SUNDAY...West winds 10 to 15 kt becoming northwest 15 to 20 kt in the afternoon. Slight chance of showers in the afternoon. Waves 1 to 2 ft. $$ LMZ743>745-180315- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 337 PM CDT Fri Apr 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING... .TONIGHT...South winds to 30 kt becoming southwest 20 to 25 kt late. Showers and thunderstorms in the evening, then showers and a chance of thunderstorms after midnight. Waves 2 to 4 ft. .SATURDAY...Northwest winds 20 to 25 kt. Chance of showers in the morning. Waves 3 to 5 ft. .SATURDAY NIGHT...Northwest winds 15 to 20 kt becoming west 10 to 15 kt. Partly cloudy in the evening then clearing. Waves 2 to 4 ft. .SUNDAY...West winds 10 to 20 kt becoming northwest in the afternoon. Mostly sunny in the morning, then becoming mostly cloudy. Waves 1 to 3 ft. $$  311 FZUS53 KGRR 172053 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 453 PM EDT Fri Apr 17 2026 For waters within five nautical miles of shore on Lake Michigan LMZ849-180800- Pentwater to Manistee MI- 453 PM EDT Fri Apr 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM EDT THIS EVENING THROUGH SUNDAY MORNING... .THROUGH EARLY EVENING...South winds 15 to 25 knots. Partly sunny. Waves 2 to 3 feet. .TONIGHT...South winds to 30 knots. Rain showers and a chance of thunderstorms. Patchy fog after midnight. Waves 3 to 5 feet. .SATURDAY...West winds to 30 knots. Partly sunny with a chance of rain showers. Waves 4 to 6 feet. .SATURDAY NIGHT...West winds to 30 knots. Partly cloudy. Waves 4 to 6 feet. .SUNDAY...West winds 15 to 25 knots veering northwest early in the afternoon. Mostly sunny. Waves 3 to 5 feet. .SUNDAY NIGHT...North winds 10 to 15 knots veering northeast after midnight. Mostly clear. Waves 2 to 3 feet. .MONDAY...South winds around 10 knots veering southwest in the late morning and afternoon. Sunny. Waves 1 to 2 feet. .TUESDAY...South winds to 30 knots. Mostly sunny. Waves 5 to 7 feet. .WEDNESDAY...Northeast winds 10 to 15 knots backing northwest early in the afternoon. Sunny. Waves 1 to 2 feet. $$ LMZ848-180800- Whitehall to Pentwater MI- 453 PM EDT Fri Apr 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM EDT THIS EVENING THROUGH SUNDAY MORNING... .THROUGH EARLY EVENING...South winds 15 to 25 knots. Mostly sunny. Waves 2 to 3 feet. .TONIGHT...South winds to 30 knots. Rain showers and a chance of thunderstorms. Patchy fog after midnight. Waves 4 to 6 feet. .SATURDAY...West winds to 30 knots. Partly sunny with a chance of rain showers. Waves 4 to 6 feet. .SATURDAY NIGHT...West winds to 30 knots. Partly cloudy. Waves 4 to 6 feet. .SUNDAY...Northwest winds 15 to 25 knots. Mostly sunny. Waves 3 to 5 feet. .SUNDAY NIGHT...North winds 10 to 20 knots veering northeast after midnight. Mostly clear. Waves 2 to 3 feet. .MONDAY...East winds around 10 knots veering southwest in the late morning and afternoon. Sunny. Waves around 1 foot. .TUESDAY...South winds to 30 knots. Mostly sunny. Waves 6 to 8 feet. .WEDNESDAY...Northeast winds 10 to 15 knots backing northwest early in the afternoon. Sunny. Waves around 1 foot. $$ LMZ847-180800- Grand Haven to Whitehall MI- 453 PM EDT Fri Apr 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM EDT THIS EVENING THROUGH SUNDAY MORNING... .THROUGH EARLY EVENING...Southeast winds 15 to 20 knots. Mostly sunny. Waves 1 to 3 feet. .TONIGHT...South winds to 30 knots. Rain showers and a chance of thunderstorms. Widespread fog after midnight. Waves 3 to 5 feet. .SATURDAY...West winds to 30 knots. Partly sunny with a chance of rain showers. Waves 5 to 7 feet. .SATURDAY NIGHT...West winds around 25 knots. Partly cloudy. Waves 4 to 6 feet. .SUNDAY...West winds 15 to 25 knots. Mostly sunny. Waves 4 to 6 feet. .SUNDAY NIGHT...North winds 10 to 20 knots veering northeast around 10 knots after midnight. Mostly clear. Waves 1 to 3 feet. .MONDAY...East winds around 10 knots veering south in the late morning and early afternoon, then veering southwest early in the afternoon. Sunny. Waves around 1 foot. .TUESDAY...South winds to 30 knots veering southwest 20 to 25 knots early in the afternoon. Mostly sunny. Waves 5 to 7 feet. .WEDNESDAY...East winds 10 to 15 knots veering southeast in the late morning and early afternoon, then veering southwest early in the afternoon. Sunny. Waves around 1 foot. $$ LMZ846-180800- Holland to Grand Haven MI- 453 PM EDT Fri Apr 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM EDT THIS EVENING THROUGH SUNDAY MORNING... .THROUGH EARLY EVENING...South winds 15 to 20 knots. Mostly sunny. Waves 1 to 2 feet. .TONIGHT...South winds to 30 knots. Rain showers and a chance of thunderstorms. Patchy fog after midnight. Waves 3 to 5 feet. .SATURDAY...West winds to 30 knots. Partly sunny with a chance of rain showers. Waves 5 to 7 feet. .SATURDAY NIGHT...West winds to 30 knots. Partly cloudy. Waves 4 to 6 feet. .SUNDAY...West winds 20 to 25 knots. Mostly sunny. Waves 4 to 6 feet. .SUNDAY NIGHT...Northwest winds 10 to 20 knots veering northeast around 10 knots after midnight. Mostly clear. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. .MONDAY...East winds around 10 knots veering southeast in the late morning and early afternoon, then veering southwest early in the afternoon. Sunny. Waves around 1 foot. .TUESDAY...South winds to 30 knots veering southwest 20 to 25 knots early in the afternoon. Mostly sunny. Waves 5 to 7 feet. .WEDNESDAY...East winds 10 to 15 knots veering southwest early in the afternoon. Sunny. Waves 1 to 2 feet. $$ LMZ845-180800- South Haven to Holland MI- 453 PM EDT Fri Apr 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM EDT THIS EVENING THROUGH SUNDAY MORNING... .THROUGH EARLY EVENING...South winds 15 to 20 knots. Mostly sunny. Waves around 1 foot. .TONIGHT...South winds 15 to 25 knots becoming after midnight. Rain showers and a chance of thunderstorms. Patchy fog after midnight. Waves 1 to 3 feet building to 2 to 4 feet in the late evening and overnight. .SATURDAY...Northwest winds to 30 knots. Partly sunny with a chance of rain showers and a slight chance of thunderstorms. Waves 5 to 7 feet. .SATURDAY NIGHT...West winds to 30 knots. Partly cloudy. Waves 4 to 6 feet. .SUNDAY...West winds 15 to 25 knots. Mostly sunny. Waves 3 to 5 feet. .SUNDAY NIGHT...Northwest winds 10 to 20 knots veering northeast around 10 knots after midnight. Mostly clear. Waves 1 to 3 feet. .MONDAY...Northeast winds around 10 knots veering southeast in the late morning and early afternoon, then veering west early in the afternoon. Sunny. Waves around 1 foot. .TUESDAY...South winds 20 to 25 knots veering southwest 15 to 20 knots early in the afternoon. Mostly sunny. Waves 3 to 5 feet. .WEDNESDAY...East winds 10 to 15 knots backing north early in the afternoon. Sunny. Waves 1 to 2 feet. $$ LMZ844-180800- St Joseph to South Haven MI- 453 PM EDT Fri Apr 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM EDT THIS EVENING THROUGH SUNDAY MORNING... .THROUGH EARLY EVENING...South winds around 15 knots. Mostly sunny. Waves 1 to 2 feet. .TONIGHT...South winds 15 to 25 knots. Rain showers and a chance of thunderstorms. Patchy fog after midnight. Waves 2 to 4 feet. .SATURDAY...West winds to 30 knots. Rain showers likely and a slight chance of thunderstorms. Waves 4 to 6 feet. .SATURDAY NIGHT...Northwest winds 20 to 25 knots. Partly cloudy. Waves 3 to 5 feet. .SUNDAY...West winds 15 to 25 knots. Mostly sunny. Waves 3 to 5 feet. .SUNDAY NIGHT...North winds 10 to 15 knots veering northeast after midnight. Mostly clear. Waves 1 to 3 feet. .MONDAY...Northeast winds 5 to 10 knots backing west early in the afternoon. Sunny. Waves 1 to 2 feet. .TUESDAY...South winds 20 to 25 knots veering southwest 15 to 20 knots early in the afternoon. Mostly sunny. Waves 2 to 4 feet. .WEDNESDAY...East winds 10 to 15 knots backing north early in the afternoon. Sunny. Waves 1 to 2 feet. $$