772 FZUS53 KIWX 180802 NSHIWX Nearshore Marine Forecast National Weather Service Northern Indiana 402 AM EDT Sat Apr 18 2026 For waters within five nautical miles of shore on Lake Michigan LMZ046-181415- Michigan City IN to New Buffalo MI- 402 AM EDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...West winds 15 to 20 knots diminishing to 10 to 15 knots. Gusts up to 25 knots. Showers likely early, then a slight chance of showers late this morning. Waves 2 to 4 feet. .TONIGHT...West winds 10 to 15 knots. A chance of sprinkles in the evening. Waves 2 to 4 feet. .SUNDAY...West winds around 10 knots becoming northwest. Sunny in the morning, then becoming partly sunny. Waves 1 to 2 feet. .SUNDAY NIGHT...North winds 5 to 10 knots. Mostly clear. Waves 1 to 2 feet. The water temperature at St. Joseph is 49 degrees and at Michigan City is 48 degrees. $$ LMZ043-181415- New Buffalo MI to St Joseph MI- 402 AM EDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...West winds 15 to 20 knots. Gusts up to 25 knots. Showers likely early, then a slight chance of showers late this morning. Waves 2 to 4 feet building to 3 to 5 feet. .TONIGHT...West winds 10 to 15 knots. Gusts up to 25 knots. A chance of sprinkles in the evening. Waves 2 to 4 feet. .SUNDAY...West winds 10 to 15 knots becoming northwest. Mostly sunny. Waves 1 to 3 feet. .SUNDAY NIGHT...Northwest winds 10 knots or less becoming northeast. Mostly clear. Waves 1 to 2 feet. The water temperature at St. Joseph is 49 degrees and at Michigan City is 48 degrees. $$  099 FZUS51 KBUF 180805 NSHBUF Nearshore Marine Forecast National Weather Service Buffalo NY 405 AM EDT Sat Apr 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. LEZ020-181500- Upper Niagara River and Buffalo Harbor- 405 AM EDT Sat Apr 18 2026 .TODAY...South winds 10 to 15 knots becoming southwest 15 to 20 knots. A chance of showers early this afternoon. Showers with a chance of thunderstorms late. Some thunderstorms may produce gusty winds late. .TONIGHT...West winds 5 to 10 knots. Rain showers likely. .SUNDAY...West winds 5 to 15 knots. A chance of rain and snow showers in the morning, then rain showers likely in the afternoon. .SUNDAY NIGHT...West winds 5 to 10 knots becoming northwest. Rain showers likely with a chance of snow showers in the evening, then a chance of snow showers overnight. .MONDAY...Northwest winds 10 knots or less becoming southwest. Partly cloudy. .TUESDAY...South winds 5 to 10 knots becoming southwest. Mostly cloudy. .WEDNESDAY...Northwest winds 5 to 10 knots becoming light and variable. Partly cloudy, then becoming mainly clear. Winds and waves higher in and near thunderstorms. The water temperature off Buffalo is 42 degrees. $$ LOZ030-181500- Lower Niagara River- 405 AM EDT Sat Apr 18 2026 .TODAY...South winds 10 to 15 knots becoming southwest. Showers likely early this afternoon. Showers with a chance of thunderstorms late. Some thunderstorms may produce gusty winds late. .TONIGHT...West winds 5 to 15 knots becoming northwest. Rain showers likely. .SUNDAY...West winds 5 to 15 knots. A chance of rain showers. .SUNDAY NIGHT...West winds 5 to 15 knots becoming northwest. A chance of rain showers in the evening. .MONDAY...Northwest winds 10 knots or less becoming southwest. Partly cloudy. .TUESDAY...South winds 5 to 15 knots becoming west. Mostly cloudy. .WEDNESDAY...North winds 5 to 10 knots becoming light and variable. Becoming mainly clear. Winds and waves higher in and near thunderstorms. $$ LEZ040-041-181500- Buffalo to Ripley along Lake Erie- 405 AM EDT Sat Apr 18 2026 .TODAY...South winds 15 to 20 knots becoming southwest. A chance of showers early this afternoon. Showers with a chance of thunderstorms late. Some thunderstorms may produce gusty winds late. Waves 1 to 3 feet. .TONIGHT...Southwest winds 15 to 20 knots becoming west 5 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 and snow showers. Waves 2 to 4 feet subsiding to 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 southwest. Partly to mostly cloudy. Waves 2 feet or less. .WEDNESDAY...North winds less than 10 knots. Partly cloudy, then becoming mainly clear. Waves 1 foot or less. Winds and waves higher in and near thunderstorms. $$ LOZ042-181500- Niagara River to Hamlin Beach along Lake Ontario- 405 AM EDT Sat Apr 18 2026 .TODAY...South winds 10 to 15 knots becoming southwest 15 to 20 knots. Showers likely early this afternoon. Showers with a chance of thunderstorms late. Some thunderstorms may produce gusty winds late. Waves 1 to 3 feet. .TONIGHT...West winds 15 to 20 knots diminishing to 10 to 15 knots. Rain showers likely with a chance of thunderstorms in the evening, then rain showers likely overnight. Some thunderstorms may produce gusty winds in the evening. Waves 1 to 3 feet building to 2 to 4 feet. .SUNDAY...West winds 10 to 15 knots increasing to 15 to 20 knots. A chance of rain and snow showers in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet. .SUNDAY NIGHT...West winds 15 to 20 knots becoming northwest. A chance of rain showers in the evening. Waves 2 to 4 feet building to 3 to 5 feet. Waves occasionally around 6 feet. .MONDAY...Northwest winds 15 to 20 knots becoming southwest 5 to 15 knots. Becoming mainly clear. Waves 2 to 4 feet subsiding to 1 foot or less. .TUESDAY...South winds 15 to 20 knots becoming northwest 5 to 15 knots. A chance of rain showers. Waves 1 to 3 feet. .WEDNESDAY...North winds 10 knots or less. Becoming mainly clear. Waves 2 feet or less. Winds and waves higher in and near thunderstorms. $$ LOZ043-181500- Hamlin Beach to Sodus Bay along Lake Ontario including Irondequoit Bay- 405 AM EDT Sat Apr 18 2026 .TODAY...South winds 10 to 15 knots increasing to 15 to 20 knots. Showers likely late. Waves 1 to 3 feet. .TONIGHT...West winds 15 to 20 knots becoming northwest 10 to 15 knots. Rain showers with a chance of thunderstorms in the evening, then rain showers likely overnight. Some thunderstorms may produce gusty winds in the evening. Waves 1 to 3 feet building to 2 to 4 feet. .SUNDAY...West winds 10 to 15 knots increasing to 15 to 20 knots. Rain and snow showers likely in the morning, then a chance of rain and snow showers in the afternoon. Waves 1 to 3 feet building to 3 to 5 feet. Waves occasionally around 6 feet. .SUNDAY NIGHT...West winds 15 to 20 knots. 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 3 to 5 feet subsiding to 1 to 3 feet. Waves occasionally around 6 feet. .TUESDAY...South winds 5 to 15 knots becoming west. A chance of rain showers. Waves 2 feet or less. .WEDNESDAY...North winds 5 to 15 knots. Becoming mainly clear. Waves 2 feet or less. Winds and waves higher in and near thunderstorms. The water temperature off Rochester is 42 degrees. $$ LOZ044-181500- Sodus Bay to Mexico Bay along Lake Ontario- 405 AM EDT Sat Apr 18 2026 .TODAY...Southeast winds 10 to 15 knots becoming south 15 to 20 knots. A chance of showers late. Waves 1 to 3 feet. .TONIGHT...Southwest winds 15 to 20 knots becoming northwest 10 to 15 knots. Rain showers. Waves 1 to 3 feet building to 2 to 4 feet. .SUNDAY...West winds 10 to 15 knots increasing to 15 to 20 knots. Rain and snow showers likely in the morning, then a chance of snow showers in the afternoon. Waves 2 to 4 feet building to 3 to 6 feet. Waves occasionally around 7 feet. .SUNDAY NIGHT...West winds 15 to 20 knots. Partly cloudy. Waves 3 to 6 feet. Waves occasionally around 7 feet. .MONDAY...Northwest winds 15 to 20 knots becoming west 5 to 15 knots. Partly cloudy, then becoming mainly clear. Waves 3 to 6 feet subsiding to 1 to 3 feet. Waves occasionally around 7 feet. .TUESDAY...South winds 5 to 15 knots becoming southwest. A chance of rain showers. Waves 2 feet or less. .WEDNESDAY...North winds 5 to 15 knots diminishing to less than 10 knots. Becoming mainly clear. Waves 1 to 3 feet subsiding to 1 foot or less. $$ LOZ045-181500- Mexico Bay to the Saint Lawrence River along Lake Ontario- 405 AM EDT Sat Apr 18 2026 .TODAY...Southeast winds 15 to 20 knots becoming south. A chance of showers late. Waves 1 to 3 feet building to 2 to 4 feet. .TONIGHT...South winds 15 to 20 knots becoming west 10 to 15 knots. Rain showers. Waves 2 to 4 feet. .SUNDAY...West winds 10 to 15 knots increasing to 15 to 20 knots. Rain showers with snow showers likely in the morning, then a chance of rain and snow showers in the afternoon. Waves 1 to 3 feet building to 3 to 5 feet. Waves occasionally around 6 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 west 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. A chance of rain showers. Waves 2 feet or less. .WEDNESDAY...North winds 10 knots or less. Becoming mainly clear. Waves 2 feet or less. $$  274 FZUS53 KLOT 180809 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 309 AM CDT Sat Apr 18 2026 For waters within five nautical miles of shore on Lake Michigan Waves are provided as a range of significant wave heights, which is the average of the highest 1/3 of the waves, along with the average height of the highest 10 percent of the waves which will occasionally be encountered. LMZ740>742-182115- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 309 AM CDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .EARLY THIS MORNING...Northwest winds 20 to 25 kt. Chance of showers. Waves 1 to 3 ft. .TODAY...Northwest winds 20 to 25 kt. Chance of showers in the morning. Waves 2 to 4 ft. .TONIGHT...West winds 20 to 25 kt becoming southwest and diminishing to 10 to 15 kt in the evening. Mostly clear. Waves 2 to 4 ft subsiding to 1 to 2 ft. .SUNDAY...West winds 10 to 20 kt becoming northwest and increasing to 15 to 25 kt in the afternoon. Chance of showers in the afternoon. Waves 1 to 2 ft. .SUNDAY NIGHT...Northwest winds 10 to 15 kt becoming north overnight. Partly cloudy in the evening then clearing. Waves 1 to 2 ft. $$ LMZ743>745-182115- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 309 AM CDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .EARLY THIS MORNING...Southwest winds 15 to 25 kt becoming northwest and increasing to 20 to 25 kt around daybreak. Chance of showers. Waves 2 to 4 ft. .TODAY...Northwest winds 20 to 25 kt. Chance of showers in the morning. Waves 2 to 4 ft building to 3 to 5 ft. .TONIGHT...West winds 20 to 25 kt diminishing to 10 to 15 kt. Mostly clear. Waves 3 to 5 ft subsiding to 1 to 3 ft. .SUNDAY...Southwest winds 10 to 20 kt becoming northwest and increasing to 15 to 25 kt in the afternoon. Chance of showers in the afternoon. Waves 1 to 3 ft. .SUNDAY NIGHT...North winds 10 to 15 kt. Partly cloudy in the evening, then becoming mostly clear. Waves 1 to 2 ft. $$ Carlaw  825 FZUS53 KMKX 180810 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 310 AM CDT Sat Apr 18 2026 For waters within five nautical miles of shore on Lake Michigan LMZ643-182100- Sheboygan to Port Washington WI- 310 AM CDT Sat Apr 18 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 4 AM CDT EARLY THIS MORNING... ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .EARLY THIS MORNING...Southwest wind 10 to 15 knots becoming west 15 to 20 knots early in the morning. Showers likely. Patchy dense fog. Waves 3 to 4 feet. .TODAY...West wind 10 to 20 knots. Gusts up to 30 knots. Partly sunny. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon. .TONIGHT...West wind 10 to 20 knots with gusts to around 25 knots becoming 15 to 20 knots late in the evening, then easing to 10 to 15 knots after midnight. Mostly clear. Waves 1 to 2 feet. .SUNDAY...West wind 10 to 15 knots veering north late in the afternoon. Slight chance of showers in the afternoon. Waves 1 to 2 feet. .SUNDAY NIGHT...Northeast wind 10 to 15 knots easing to 5 to 10 knots late in the evening, then rising to 10 to 15 knots after midnight easing to 5 to 10 knots early in the morning. Partly cloudy. Waves 1 to 2 feet. $$ LMZ644-182100- Port Washington to North Point Light WI- 310 AM CDT Sat Apr 18 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 4 AM CDT EARLY THIS MORNING... ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .EARLY THIS MORNING...Southwest wind 10 to 15 knots becoming west 15 to 20 knots early in the morning. Showers likely. Patchy dense fog. Waves 2 to 4 feet. .TODAY...West wind 15 to 20 knots becoming 10 to 20 knots late in the morning, then becoming west 10 to 20 knots in the afternoon. Gusts up to 25 knots. Partly sunny. Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon. .TONIGHT...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 with gusts to around 20 knots late in the afternoon. Slight chance of showers in the afternoon. Waves 1 to 2 feet. .SUNDAY NIGHT...North wind 10 to 15 knots easing to 5 to 10 knots late in the evening, then veering northeast after midnight becoming northeast 5 to 10 knots early in the morning. Partly cloudy. Waves 1 to 2 feet. $$ LMZ645-182100- North Point Light to Wind Point WI- 310 AM CDT Sat Apr 18 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 4 AM CDT EARLY THIS MORNING... ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .EARLY THIS MORNING...Southwest wind 10 to 15 knots becoming west 15 to 20 knots early in the morning. Showers likely. Patchy dense fog. Waves 2 to 4 feet. .TODAY...Northwest wind 15 to 20 knots backing west late in the afternoon. Gusts up to 25 knots. Partly sunny. Waves 2 to 4 feet subsiding to 1 to 2 feet in the late morning and afternoon. .TONIGHT...West wind 15 to 20 knots with gusts to around 25 knots easing to 10 to 15 knots after midnight, then becoming west 10 to 15 knots early in the morning. Partly cloudy through around midnight then clearing. Waves 1 to 2 feet. .SUNDAY...West wind 10 to 15 knots veering northwest with gusts to around 20 knots late in the afternoon. Slight chance of showers in the afternoon. Waves 1 to 2 feet. .SUNDAY NIGHT...North wind 10 to 15 knots easing to 5 to 10 knots late in the evening, then veering northeast after midnight becoming northeast 5 to 10 knots early in the morning. Partly cloudy. Waves 1 to 2 feet. $$ LMZ646-182100- Wind Point WI to Winthrop Harbor IL- 310 AM CDT Sat Apr 18 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 4 AM CDT EARLY THIS MORNING... ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .EARLY THIS MORNING...Southwest wind 10 to 15 knots becoming west 15 to 20 knots early in the morning. Showers. Patchy dense fog. Waves 2 to 4 feet subsiding to 1 to 3 feet early in the morning. .TODAY...West wind 15 to 20 knots. Gusts up to 25 knots. Mostly cloudy in the morning then becoming mostly sunny. Waves 1 to 2 feet. .TONIGHT...West wind 15 to 20 knots with gusts to around 25 knots becoming 10 to 20 knots late in the evening, then becoming 10 to 15 knots after midnight becoming west 10 to 15 knots early in the morning. Partly cloudy through around midnight then becoming clear. Waves around 1 foot. .SUNDAY...West wind 10 to 15 knots veering northwest with gusts to around 20 knots late in the afternoon. Slight chance of showers in the afternoon. Waves around 1 foot. .SUNDAY NIGHT...North wind 10 to 15 knots easing to 5 to 10 knots late in the evening, then veering northeast after midnight becoming northeast 5 to 10 knots early in the morning. Partly cloudy. Waves 1 to 2 feet. $$ See Lake Michigan Open Waters Forecast for Monday through Wednesday.  135 FZUS53 KDLH 180815 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 315 AM CDT Sat Apr 18 2026 For waters within five nautical miles of shore on Lake Superior. Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. LSZ140-181600- Grand Portage to Grand Marais MN- 315 AM CDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...West wind 20 to 25 knots. Gusts up to 25 knots increasing to 30 knots in the late morning and afternoon. Chance of flurries in the afternoon. Waves 4 to 6 feet. Waves occasionally to 8 feet. .TONIGHT...Northwest wind 20 to 25 knots. Gusts up to 30 knots decreasing to 25 knots after midnight. Mostly cloudy in the evening then becoming partly cloudy. Waves 3 to 5 feet subsiding to 1 to 3 feet. Waves occasionally to 7 feet. .SUNDAY...Northwest wind 15 to 20 knots. Gusts up to 25 knots decreasing to 20 knots in the late morning and afternoon. Mostly sunny. Waves 1 to 2 feet. .SUNDAY NIGHT...Northwest wind 10 to 15 knots. Gusts up to 20 knots early in the evening. Mostly clear. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ141-181600- Grand Marais to Taconite Harbor MN- 315 AM CDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...West wind 20 to 25 knots. Gusts up to 25 knots increasing to 30 knots in the late morning and afternoon. Chance of flurries in the afternoon. Waves 3 to 5 feet. .TONIGHT...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 2 to 4 feet subsiding to 1 to 2 feet after midnight. .SUNDAY...Northwest wind 10 to 15 knots with gusts to around 20 knots. Sunny. Waves 1 foot or less. .SUNDAY NIGHT...Northwest wind 5 to 10 knots. Mostly clear. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ142-181600- Taconite Harbor to Silver Bay Harbor MN- 315 AM CDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...West wind 15 to 20 knots with gusts to around 25 knots. Partly sunny. Waves 1 to 2 feet building to 1 to 3 feet in the afternoon. .TONIGHT...West wind 15 to 20 knots with gusts to around 25 knots becoming northwest 5 to 10 knots with gusts to around 20 knots after midnight. Mostly cloudy in the evening then clearing. Waves 1 to 3 feet. .SUNDAY...Northwest wind 5 to 10 knots. Gusts up to 20 knots in the morning. Sunny. Waves 1 foot or less. .SUNDAY NIGHT...Northwest wind 5 to 10 knots. Mostly clear. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ143-181600- Silver Bay Harbor to Two Harbors MN- 315 AM CDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...West wind 15 to 20 knots with gusts to around 25 knots. Partly sunny. Waves 1 to 3 feet building to 2 to 4 feet in the late morning and afternoon. .TONIGHT...West wind 15 to 20 knots with gusts to around 25 knots becoming northwest 5 to 10 knots with gusts to around 20 knots after midnight. Mostly cloudy in the evening then becoming partly cloudy. Waves 1 to 3 feet subsiding to 1 to 2 feet in the late evening and overnight. .SUNDAY...Northwest wind 5 to 10 knots. Gusts up to 20 knots early in the morning. Sunny. Waves 1 foot or less. .SUNDAY NIGHT...Northwest wind 5 knots. Mostly clear. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ144-181600- Two Harbors to Duluth MN- 315 AM CDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...West wind 20 to 25 knots with gusts to around 30 knots. Partly sunny. Waves 2 to 4 feet. .TONIGHT...West wind 20 to 25 knots with gusts to around 30 knots becoming northwest 10 to 15 knots with gusts to around 20 knots after midnight. Partly cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. .SUNDAY...Northwest wind 10 to 15 knots. Sunny. Waves 1 foot or less. .SUNDAY NIGHT...Northwest wind 5 to 10 knots becoming southwest early in the morning. Mostly clear. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ145-181600- Duluth MN to Port Wing WI- 315 AM CDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...West wind 20 to 25 knots with gusts to around 30 knots. Chance of flurries early in the afternoon. Chance of sprinkles late in the afternoon. Waves 4 to 6 feet. Waves occasionally to 7 feet. .TONIGHT...West wind 20 to 25 knots with gusts to around 30 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. Waves occasionally to 7 feet. .SUNDAY...Northwest wind 10 to 15 knots. Gusts up to 20 knots early in the morning. Sunny. Waves 1 to 2 feet. .SUNDAY NIGHT...Northwest wind 5 to 10 knots becoming south early in the morning. Mostly clear. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ146-181600- Port Wing to Sand Island WI- 315 AM CDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...West wind 20 to 25 knots with gusts to around 30 knots. Chance of flurries in the afternoon. Chance of sprinkles late in the afternoon. Waves 4 to 6 feet. Waves occasionally to 8 feet. .TONIGHT...Northwest wind 15 to 20 knots. Gusts up to 30 knots decreasing to 20 knots. Mostly cloudy in the evening then becoming partly cloudy. Waves 4 to 6 feet subsiding to 1 to 3 feet. Waves occasionally to 8 feet. .SUNDAY...Northwest wind 10 to 15 knots with gusts to around 20 knots becoming west 5 knots late in the afternoon. Sunny. Waves 1 to 2 feet. .SUNDAY NIGHT...Northwest wind 5 knots becoming south early in the morning. Mostly clear. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ147-181600- Sand Island to Bayfield WI- 315 AM CDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...West wind 15 to 20 knots with gusts to around 30 knots. Chance of flurries in the afternoon. Chance of sprinkles late in the afternoon. Waves 4 to 6 feet. Waves occasionally to 8 feet. .TONIGHT...Northwest wind 15 to 20 knots. Gusts up to 30 knots decreasing to 20 knots. Chance of sprinkles in the evening. Waves 4 to 6 feet subsiding to 1 to 3 feet. Waves occasionally to 8 feet. .SUNDAY...Northwest wind 10 to 15 knots with gusts to around 20 knots becoming west 5 knots late in the afternoon. Sunny. Waves 1 to 2 feet. .SUNDAY NIGHT...Northwest wind 5 knots becoming north after midnight, then becoming east early in the morning. Mostly clear. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ150-181600- Outer Apostle Islands Beyond 5 NM from Mainland- 315 AM CDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...West wind 20 to 25 knots with gusts to around 30 knots. Chance of flurries in the afternoon. Chance of sprinkles late in the afternoon. Waves 4 to 7 feet. Waves occasionally to 9 feet. .TONIGHT...Northwest wind 15 to 20 knots. Gusts up to 30 knots decreasing to 20 knots. Chance of sprinkles and flurries in the evening. Waves 4 to 7 feet subsiding to 2 to 4 feet early in the morning. Waves occasionally to 9 feet. .SUNDAY...Northwest wind 10 to 15 knots. Gusts up to 20 knots until late afternoon. Sunny. Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon. .SUNDAY NIGHT...Northwest wind 5 to 10 knots becoming northeast early in the morning. Mostly clear. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ121-181600- Chequamegon Bay-Bayfield to Oak Point WI- 315 AM CDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...West wind 15 to 20 knots. Gusts up to 25 knots increasing to 30 knots late in the afternoon. Chance of flurries in the afternoon. Chance of sprinkles late in the afternoon. Waves 1 to 2 feet. .TONIGHT...West wind 15 to 20 knots with gusts to around 25 knots becoming northwest 5 to 10 knots with gusts to around 20 knots after midnight. Chance of sprinkles in the evening. Waves 1 to 2 feet. .SUNDAY...Northwest wind 5 to 10 knots. Sunny. Waves 1 foot or less. .SUNDAY NIGHT...Northwest wind 5 knots becoming southwest early in the morning. Mostly clear. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ148-181600- Oak Point to Saxon Harbor WI- 315 AM CDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...West wind 15 to 20 knots. Gusts up to 25 knots increasing to 30 knots in the late morning and afternoon. Chance of flurries in the afternoon. Chance of sprinkles late in the afternoon. Waves 2 to 4 feet. .TONIGHT...Northwest wind 15 to 20 knots. Gusts up to 25 knots decreasing to 20 knots after midnight. Chance of sprinkles and flurries in the evening. Waves 2 to 4 feet subsiding to 1 to 2 feet after midnight. .SUNDAY...Northwest wind 10 to 15 knots. Gusts up to 20 knots early in the morning. Sunny. Waves 1 to 2 feet. .SUNDAY NIGHT...Northwest wind 5 knots becoming south early in the morning. Mostly clear. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH  718 FZUS53 KGRR 180834 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 433 AM EDT Sat Apr 18 2026 For waters within five nautical miles of shore on Lake Michigan LMZ849-182000- Pentwater to Manistee MI- 433 AM EDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING... .TODAY...West winds to 30 knots. Cloudy with a slight chance of rain showers in the morning, then mostly sunny in the afternoon. Waves 3 to 5 feet. .TONIGHT...West winds 15 to 25 knots. Partly cloudy. Waves 4 to 6 feet. .SUNDAY...Northwest winds 15 to 25 knots veering north early in the afternoon. Mostly sunny. Waves 2 to 4 feet. .SUNDAY NIGHT...North winds 10 to 15 knots. Mostly clear. Waves 1 to 3 feet. .MONDAY...Northwest winds around 10 knots backing southwest in the late morning and afternoon. Sunny. Waves 1 to 2 feet. .TUESDAY...South winds to 30 knots decreasing to 15 to 20 knots early in the afternoon. Mostly sunny. Waves 4 to 6 feet. .WEDNESDAY...Northeast winds 5 to 15 knots backing northwest early in the afternoon. Sunny. Waves around 1 foot. $$ LMZ848-182000- Whitehall to Pentwater MI- 433 AM EDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING... .TODAY...West winds to 30 knots. Cloudy with a chance of rain showers in the morning, then mostly sunny in the afternoon. Waves 4 to 6 feet. .TONIGHT...West winds around 25 knots. Partly cloudy. Waves 4 to 6 feet. .SUNDAY...Northwest winds 15 to 25 knots. Mostly sunny. Waves 3 to 5 feet. .SUNDAY NIGHT...North winds 10 to 20 knots veering northeast after midnight. Mostly clear. Waves 2 to 3 feet. .MONDAY...East winds 5 to 10 knots veering southwest 10 to 15 knots in the late morning and afternoon. Sunny. Waves around 1 foot. .TUESDAY...South winds to 30 knots decreasing to 15 to 20 knots early in the afternoon. Mostly sunny. Waves 5 to 7 feet. .WEDNESDAY...Northeast winds 10 to 15 knots backing northwest early in the afternoon. Sunny. Waves around 1 foot. $$ LMZ847-182000- Grand Haven to Whitehall MI- 433 AM EDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING... .TODAY...West winds to 30 knots. Cloudy with a chance of rain showers in the morning, then mostly sunny in the afternoon. Waves 4 to 6 feet. .TONIGHT...West winds around 25 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 4 feet subsiding to 1 to 3 feet in the late evening and overnight. .MONDAY...Northeast winds around 10 knots backing west in the late morning and early afternoon, then backing southwest early in the afternoon. Sunny. Waves 1 foot or less. .TUESDAY...South winds to 30 knots. Mostly sunny. Waves 5 to 7 feet. .WEDNESDAY...Northeast winds around 10 knots backing northwest early in the afternoon. Sunny. Waves 1 foot or less. $$ LMZ846-182000- Holland to Grand Haven MI- 433 AM EDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING... .TODAY...West winds to 30 knots. Cloudy with a chance of rain showers in the morning, then mostly sunny in the afternoon. Waves 4 to 6 feet. .TONIGHT...West winds around 25 knots. Partly cloudy. Waves 4 to 6 feet. .SUNDAY...West winds 20 to 25 knots. Mostly sunny. Waves 3 to 5 feet. .SUNDAY NIGHT...Northwest winds 15 to 20 knots veering north 10 to 15 knots in the late evening and overnight. Mostly clear. Waves 2 to 4 feet. .MONDAY...Northeast winds around 10 knots backing north in the late morning and early afternoon, then backing southwest early in the afternoon. Sunny. Waves 1 foot or less. .TUESDAY...Southwest winds to 30 knots. Mostly sunny. Waves 4 to 6 feet. .WEDNESDAY...Northeast winds 10 to 15 knots backing north early in the afternoon. Sunny. Waves 1 foot or less. $$ LMZ845-182000- South Haven to Holland MI- 433 AM EDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING... .TODAY...West winds to 30 knots. Cloudy with a chance of rain showers in the morning, then mostly sunny in the afternoon. Waves 4 to 6 feet. .TONIGHT...West winds 20 to 25 knots. Partly cloudy. Waves 3 to 5 feet. .SUNDAY...West winds 20 to 25 knots. Mostly sunny. Waves 3 to 5 feet. .SUNDAY NIGHT...Northwest winds 10 to 20 knots veering northeast after midnight. Mostly clear. Waves 2 to 4 feet. .MONDAY...Northeast winds 5 to 10 knots backing north in the late morning and early afternoon, then backing west early in the afternoon. Sunny. Waves around 1 foot. .TUESDAY...Southwest winds 15 to 25 knots. Mostly sunny. Waves 3 to 5 feet. .WEDNESDAY...Northeast winds 10 to 15 knots backing north early in the afternoon. Sunny. Waves around 1 foot. $$ LMZ844-182000- St Joseph to South Haven MI- 433 AM EDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING... .TODAY...West winds 20 to 25 knots. Mostly cloudy with a chance of rain showers in the morning, then mostly sunny in the afternoon. Waves 4 to 6 feet. .TONIGHT...West winds 20 to 25 knots. Partly cloudy. Waves 3 to 5 feet. .SUNDAY...West winds 15 to 20 knots. Mostly sunny. Waves 2 to 4 feet. .SUNDAY NIGHT...Northwest winds 10 to 20 knots veering northeast around 10 knots after midnight. Mostly clear. Waves 1 to 3 feet. .MONDAY...Northeast winds 5 to 10 knots backing northwest early in the afternoon. Sunny. Waves 1 to 2 feet. .TUESDAY...Southwest winds 15 to 25 knots. Mostly sunny. Waves 2 to 4 feet. .WEDNESDAY...Northeast winds 10 to 15 knots backing north 5 to 10 knots early in the afternoon. Sunny. Waves 1 to 2 feet. $$