236 FZUS53 KGRR 181913 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 313 PM EDT Mon May 18 2026 For waters within five nautical miles of shore on Lake Michigan LMZ849-190800- Pentwater to Manistee MI- 313 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .THROUGH EARLY EVENING...South winds 20 to 25 knots. Mostly cloudy with a chance of showers and thunderstorms. Waves 3 to 5 feet. .TONIGHT...South winds to 30 knots. Partly cloudy in the evening, then rain showers likely and a chance of thunderstorms after midnight. Patchy fog after midnight. Waves 4 to 6 feet. .TUESDAY...South winds to 30 knots. Rain showers likely and a chance of thunderstorms. Patchy fog. Waves 5 to 7 feet. .TUESDAY NIGHT...West winds 10 to 20 knots veering north in the late evening and overnight. Partly 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 decreasing to 5 to 10 knots after midnight. Partly cloudy. Waves 1 to 3 feet. .THURSDAY...Northeast winds 5 to 10 knots backing north 10 to 15 knots early in the afternoon. Mostly sunny. Waves around 1 foot. .FRIDAY...East winds 10 to 20 knots. Mostly cloudy. Waves 1 foot or less. .SATURDAY...Northeast winds 10 to 15 knots. Mostly cloudy with a chance of rain showers. Waves 1 foot or less. $$ LMZ848-190800- Whitehall to Pentwater MI- 313 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .THROUGH EARLY EVENING...South winds 20 to 25 knots. Mostly cloudy with a chance of thunderstorms and a slight chance of rain showers. Waves 4 to 6 feet. .TONIGHT...South winds to 30 knots. Mostly cloudy with a chance of showers and thunderstorms. Patchy fog after midnight. Waves 4 to 6 feet. .TUESDAY...South winds to 30 knots. Rain showers likely and a chance of thunderstorms. Patchy fog. Waves 5 to 7 feet. .TUESDAY NIGHT...West winds 20 to 25 knots veering north 15 to 20 knots in the late evening and overnight. Partly cloudy. Waves 3 to 5 feet. .WEDNESDAY...North winds 15 to 25 knots. Sunny. Waves 2 to 4 feet. .WEDNESDAY NIGHT...North winds 15 to 25 knots veering northeast 10 to 15 knots in the late evening and overnight. Partly cloudy. Waves 2 to 3 feet. .THURSDAY...Northeast winds 10 to 15 knots backing north early in the afternoon. Mostly sunny. Waves around 1 foot. .FRIDAY...East winds 15 to 20 knots. Mostly cloudy. Waves around 1 foot. .SATURDAY...Northeast winds 15 to 20 knots. Mostly cloudy. Waves 1 foot or less. $$ LMZ847-190800- Grand Haven to Whitehall MI- 313 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .THROUGH EARLY EVENING...South winds 20 to 25 knots. Rain showers likely and a chance of thunderstorms. Waves 3 to 5 feet. .TONIGHT...South winds to 30 knots. Mostly cloudy with a chance of showers and thunderstorms. Patchy fog after midnight. Waves 4 to 6 feet. .TUESDAY...Southwest winds to 30 knots. Rain showers likely and a chance of thunderstorms. Patchy fog. Waves 5 to 7 feet. .TUESDAY NIGHT...Northwest winds 15 to 25 knots veering north after midnight. Mostly cloudy. Waves 3 to 5 feet. .WEDNESDAY...North winds 15 to 25 knots. Sunny. Waves 2 to 4 feet. .WEDNESDAY NIGHT...North winds 15 to 25 knots veering northeast 10 to 15 knots after midnight. Partly cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. .THURSDAY...East winds 10 to 15 knots backing north early in the afternoon. Mostly sunny. Waves 1 foot or less. .FRIDAY...East winds 15 to 20 knots. Mostly cloudy. Waves around 1 foot. .SATURDAY...East winds 15 to 20 knots backing northeast 10 to 15 knots early in the afternoon. Mostly cloudy with a chance of rain showers. Waves 1 foot or less. $$ LMZ846-190800- Holland to Grand Haven MI- 313 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .THROUGH EARLY EVENING...South winds 20 to 25 knots. Mostly cloudy with a chance of showers and thunderstorms. Waves 3 to 5 feet. .TONIGHT...South winds to 30 knots. Mostly cloudy with a chance of showers and thunderstorms. Patchy fog after midnight. Waves 3 to 5 feet. .TUESDAY...Southwest winds to 30 knots. Rain showers likely and a chance of thunderstorms. Patchy fog. Waves 5 to 7 feet. .TUESDAY NIGHT...Northwest winds 15 to 20 knots veering north after midnight. Mostly cloudy. Waves 2 to 4 feet. .WEDNESDAY...North winds 15 to 25 knots. Mostly sunny. Waves 3 to 5 feet. .WEDNESDAY NIGHT...North winds 15 to 25 knots veering northeast around 15 knots after midnight. Partly cloudy. Waves 2 to 4 feet. .THURSDAY...Northeast winds 10 to 15 knots. Mostly sunny. Waves around 1 foot. .FRIDAY...East winds 15 to 20 knots. Mostly cloudy. Waves around 1 foot. .SATURDAY...East winds 15 to 20 knots backing north 10 to 15 knots early in the afternoon. Mostly cloudy with a chance of rain showers. Waves 1 foot or less. $$ LMZ845-190800- South Haven to Holland MI- 313 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT TUESDAY THROUGH TUESDAY EVENING... .THROUGH EARLY EVENING...South winds around 20 knots. Rain showers likely and a chance of thunderstorms. Waves 2 to 4 feet. .TONIGHT...South winds 15 to 25 knots. Mostly cloudy with a chance of showers and thunderstorms. Waves 2 to 4 feet. .TUESDAY...Southwest winds to 30 knots. Partly sunny with a chance of showers and thunderstorms. Waves 4 to 6 feet. .TUESDAY NIGHT...Northwest winds 15 to 20 knots veering north after midnight. Mostly cloudy. Waves 2 to 4 feet. .WEDNESDAY...North winds 15 to 25 knots. Mostly sunny. Waves 3 to 5 feet. .WEDNESDAY NIGHT...North winds 15 to 25 knots veering northeast around 15 knots after midnight. Partly cloudy. Waves 3 to 5 feet subsiding to 1 to 3 feet after midnight. .THURSDAY...Northeast winds 10 to 15 knots. Mostly sunny. Waves around 1 foot. .FRIDAY...East winds 15 to 20 knots. Mostly cloudy. Waves 1 foot or less. .SATURDAY...Northeast winds 10 to 15 knots backing northwest early in the afternoon. Mostly cloudy with a chance of rain showers. Waves less than 1 foot. $$ LMZ844-190800- St Joseph to South Haven MI- 313 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT TUESDAY THROUGH TUESDAY EVENING... .THROUGH EARLY EVENING...Southwest winds around 20 knots. Rain showers likely and a chance of thunderstorms. Waves 2 to 3 feet. .TONIGHT...South winds 15 to 25 knots. Mostly cloudy with a chance of showers and thunderstorms. Waves 2 to 4 feet. .TUESDAY...Southwest winds 20 to 25 knots. Partly sunny with a chance of showers and thunderstorms. Waves 3 to 5 feet. .TUESDAY NIGHT...Northwest winds around 15 knots veering north after midnight. Mostly cloudy with rain showers likely and a chance of thunderstorms. Waves 2 to 4 feet. .WEDNESDAY...North winds 15 to 25 knots. Mostly sunny. Waves 3 to 5 feet. .WEDNESDAY NIGHT...North winds 15 to 25 knots veering northeast 10 to 15 knots in the late evening and overnight. Partly cloudy. Waves 3 to 5 feet subsiding to 2 to 3 feet after midnight. .THURSDAY...Northeast winds 10 to 15 knots. Mostly sunny. Waves 1 to 2 feet. .FRIDAY...East winds 15 to 20 knots. Mostly cloudy with a chance of rain showers. Waves around 1 foot. .SATURDAY...East winds 10 to 15 knots backing northwest early in the afternoon. Mostly cloudy. Waves less than 1 foot. $$  568 FZUS53 KDTX 181920 NSHDTX Nearshore Marine Forecast for Michigan National Weather Service Detroit/Pontiac MI 320 PM EDT Mon May 18 2026 For waters within five nautical miles of shore Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. LHZ422-190330- Inner Saginaw Bay SW of Point Au Gres to Bay Port MI- 320 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING... ...SEVERE THUNDERSTORM WATCH 221 IN EFFECT UNTIL 8 PM EDT THIS EVENING... .TONIGHT...Southwest winds 15 to 20 knots. Mostly cloudy. Light showers likely and a chance of thunderstorms in the evening, then a chance of showers and a slight chance of thunderstorms after midnight. Waves 2 to 4 feet. .TUESDAY...Southwest winds 20 to 25 knots with gusts to 30 knots. Mostly cloudy becoming partly cloudy in the late morning and early afternoon becoming mostly sunny. A chance of showers and a slight chance of thunderstorms until late afternoon, then showers likely and a chance of thunderstorms early in the afternoon. Waves 3 to 5 feet. Waves occasionally around 6 feet. .TUESDAY NIGHT...West winds 20 to 25 knots with gusts to 30 knots becoming northwest 15 to 20 knots in the late evening and overnight. Partly cloudy early in the evening becoming mostly cloudy. Light showers likely and a chance of thunderstorms early in the evening. Waves 3 to 5 feet subsiding to 2 to 4 feet after midnight. Waves occasionally around 7 feet. .WEDNESDAY...Northwest winds 15 to 20 knots diminishing to 10 to 15 knots in the late morning and early afternoon, then becoming north 15 to 20 knots early in the afternoon. Partly cloudy early in the morning then clearing. Waves 1 to 3 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ421-190330- Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay- 320 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING... ...SEVERE THUNDERSTORM WATCH 221 IN EFFECT UNTIL 8 PM EDT THIS EVENING... .TONIGHT...Southwest winds 15 to 20 knots. Mostly cloudy. Light showers likely and a chance of thunderstorms in the evening, then a chance of showers after midnight. Waves 2 to 4 feet. .TUESDAY...Southwest winds 20 to 25 knots with gusts to 30 knots. Mostly cloudy early in the morning becoming partly cloudy. A slight chance of thunderstorms early in the morning. A chance of showers until late afternoon, then showers likely and a slight chance of thunderstorms early in the afternoon. Waves 4 to 6 feet. Waves occasionally around 8 feet. .TUESDAY NIGHT...Southwest winds 20 to 25 knots becoming northwest 15 to 20 knots in the late evening and overnight. Partly cloudy becoming mostly cloudy in the late evening and early morning becoming partly cloudy. A chance of showers and thunderstorms early in the evening. Waves 4 to 6 feet subsiding to 2 to 4 feet after midnight. Waves occasionally around 8 feet. .WEDNESDAY...Northwest winds 15 to 20 knots becoming north 10 to 15 knots in the late morning and early afternoon, then becoming northeast 15 to 20 knots early in the afternoon. Partly cloudy early in the morning then clearing. Waves 2 to 4 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ441-190330- Port Austin to Harbor Beach MI- 320 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING... ...SEVERE THUNDERSTORM WATCH 221 IN EFFECT UNTIL 8 PM EDT THIS EVENING... .TONIGHT...Southwest winds 10 to 15 knots increasing to 15 to 20 knots early in the morning. Light showers and a chance of thunderstorms in the evening, then partly cloudy with a chance of showers and a slight chance of thunderstorms after midnight. Waves 1 to3 feet. .TUESDAY...South winds 15 to 20 knots becoming southwest 20 to 25 knots with gusts to 30 knots in the late morning and afternoon. Partly cloudy until late afternoon becoming mostly sunny. A slight chance of thunderstorms early in the morning. A chance of showers until late afternoon, then showers likely and a chance of thunderstorms early in the afternoon. Waves 2 to 4 feet building to 3 to 5 feet in the late morning and afternoon. Waves occasionally around 7 feet. .TUESDAY NIGHT...West winds 15 to 20 knots veering to the north in the late evening and early morning, then becoming northwest 10 to 15 knots after midnight. Partly cloudy becoming cloudy in the late evening and early morning becoming partly cloudy. A chance of showers and thunderstorms early in the evening, then a chance of showers in the late evening and early morning. Waves 3 to 5 feet. Waves occasionally around 7 feet. .WEDNESDAY...North winds 10 to 15 knots. Partly cloudy early in the morning then clearing. Waves 3 to 5 feet. Waves occasionally around 7 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ442-190330- Harbor Beach to Port Sanilac MI- 320 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING... ...SEVERE THUNDERSTORM WATCH 221 IN EFFECT UNTIL 8 PM EDT THIS EVENING... .TONIGHT...Southwest winds 15 to 20 knots becoming south 10 to 15 knots in the late evening and overnight. Mostly cloudy with showers likely and a chance of thunderstorms in the evening, then partly cloudy with a chance of showers and a slight chance of thunderstorms after midnight. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. .TUESDAY...Southwest winds 15 to 20 knots. Gusts to 30 knots in the late morning and afternoon. Mostly cloudy early in the morning becoming partly cloudy. A chance of showers and a slight chance of thunderstorms until late afternoon, then showers likely and a chance of thunderstorms early in the afternoon. Waves 2 to 4 feet. .TUESDAY NIGHT...Southwest winds 15 to 20 knots veering to the northwest in the late evening and early morning, then becoming north 10 to 15 knots after midnight. Partly cloudy becoming mostly cloudy in the late evening and early morning becoming partly cloudy. A chance of showers and thunderstorms early in the evening, then a chance of showers in the late evening and early morning. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and early morning, then building to 2 to 4 feet after midnight. .WEDNESDAY...Northwest winds 10 to 15 knots becoming north 15 to 20 knots in the late morning and afternoon. Partly cloudy early in the morning becoming mostly sunny. Waves 2 to 4 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ443-190330- Port Sanilac to Port Huron MI- 320 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING... ...SEVERE THUNDERSTORM WATCH 221 IN EFFECT UNTIL 8 PM EDT THIS EVENING... .TONIGHT...Southwest winds 15 to 20 knots becoming south 10 to 15 knots after midnight. Mostly cloudy with showers likely and a chance of thunderstorms in the evening, then partly cloudy with a chance of showers and a slight chance of thunderstorms after midnight. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. .TUESDAY...South winds 15 to 20 knots becoming southwest 20 to 25 knots early in the afternoon. Partly cloudy. A slight chance of thunderstorms in the morning. A chance of showers. A chance of thunderstorms in the afternoon. Waves 2 to 4 feet. .TUESDAY NIGHT...Southwest winds 15 to 20 knots veering to the north after midnight. Partly cloudy early in the evening becoming mostly cloudy. A chance of showers and thunderstorms until early morning. Waves 1 to 3 feet building to 2 to 4 feetafter midnight. .WEDNESDAY...North winds 15 to 20 knots. Partly cloudy until late afternoon becoming mostly sunny. Waves 2 to 4 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LEZ444-190330- Michigan Waters of Lake Erie from Detroit River to North Cape MI- 320 PM EDT Mon May 18 2026 ...SEVERE THUNDERSTORM WATCH 221 IN EFFECT UNTIL 8 PM EDT THIS EVENING... .TONIGHT...Southwest winds 15 to 20 knots diminishing to 10 to 15 knots in the late evening and overnight. Mostly cloudy with showers likely and a chance of thunderstorms in the evening, then partly cloudy with a chance of showers and a slight chance of thunderstorms after midnight. Waves 1 to 3 feet. .TUESDAY...Southwest winds 15 to 20 knots. Partly cloudy. A chance of showers and a slight chance of thunderstorms early in the morning. A chance of showers and thunderstorms early in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet early in the afternoon. .TUESDAY NIGHT...Southwest winds 15 to 20 knots becoming west 10 to 15 knots in the late evening and early morning, then veering to the northwest after midnight. Rain showers early in the evening. A chance of thunderstorms until early morning. A chance of showers in the late evening and overnight. Waves 1 to 3 feet. .WEDNESDAY...North winds 10 to 15 knots diminishing to 5 to 10 knots in the late morning and afternoon. Partly cloudy. A chance of showers early in the morning. Waves 2 feet or less. See Lake Erie Open Lake Forecast for days 3 through 5. The water temperature at Belle Isle is missing. $$ AM You can obtain your latest National Weather Service forecasts online a www.weather.gov/greatlakes  320 FZUS53 KGRB 181937 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 236 PM CDT Mon May 18 2026 For waters within five nautical miles of shore on Lake Michigan LMZ521-522-182200- 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- Green Bay south of line from Oconto WI to Little Sturgeon Bay WI- 236 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY EVENING... .THIS AFTERNOON...S wind 5 to 10 kts. Waves 2 ft or less. A slight chance of showers and thunderstorms. .TONIGHT...S wind 10 to 15 kts. Waves 1 to 3 ft. Patchy fog. a chance of showers and thunderstorms. .TUESDAY...SW wind 15 to 25 kts veering NW 10 to 15 kts early in the afternoon. Waves 2 to 4 ft. A chance of showers in the morning. .TUESDAY NIGHT...NW wind 10 to 15 kts. Waves 1 to 3 ft. Mostly cloudy in the evening then becoming partly cloudy. $$ LMZ541-182200- Rock Island Passage to Sturgeon Bay WI- 236 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT... .THIS AFTERNOON...S wind 5 to 10 kts. Waves 3 to 5 ft. Patchy fog. a slight chance of showers and thunderstorms. .TONIGHT...S wind 10 to 15 kts. Waves 2 to 4 ft building to 4 to 7 ft after midnight. Patchy dense fog in the evening. Areas of dense fog after midnight. a chance of showers in the evening. A chance of thunderstorms. Rain showers after midnight. .TUESDAY...SW wind 15 to 25 kts veering NW 10 to 20 kts early in the afternoon. Waves 4 to 7 ft. Patchy fog in the morning. a chance of showers. .TUESDAY NIGHT...NW wind 10 to 15 kts. Waves 2 to 4 ft subsiding to 1 to 3 ft after midnight. Mostly cloudy in the evening then becoming partly cloudy. $$ LMZ542-543-182200- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 236 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT... .THIS AFTERNOON...S wind 5 to 10 kts. Waves 3 to 5 ft. Patchy fog. a slight chance of showers and thunderstorms. .TONIGHT...S wind 10 to 15 kts. Waves 2 to 4 ft building to 4 to 7 ft after midnight. Patchy fog. a chance of showers and thunderstorms. .TUESDAY...SW wind 15 to 25 kts veering W early in the afternoon. Waves 4 to 7 ft. Patchy fog in the morning. a chance of showers in the morning. .TUESDAY NIGHT...NW wind 10 to 15 kts. Waves 2 to 4 ft. Mostly cloudy in the evening then becoming partly cloudy. $$ See Lake Michigan Open Lake Forecast for Thursday through Saturday. Wave height forecast is for ice free areas.  477 FZUS51 KCLE 181939 NSHCLE Nearshore Marine Forecast National Weather Service Cleveland OH 339 PM EDT Mon May 18 2026 For waters within five nautical miles of shore Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. LEZ144-190215- The Islands to Vermilion OH- 339 PM EDT Mon May 18 2026 .TONIGHT...Southwest winds 15 to 20 knots diminishing to 10 to 15 knots. A chance of showers and thunderstorms this evening, then a slight chance of showers after midnight. Waves 2 feet or less. .TUESDAY...South winds 15 to 20 knots becoming southwest. A chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. Waves 1 to 3 feet. .TUESDAY NIGHT...Southwest winds 15 to 20 knots becoming northwest 10 to 15 knots. Showers with a chance of thunderstorms. Waves 1 to 3 feet. .WEDNESDAY...Northeast winds 10 to 15 knots. Showers likely in the morning. Waves 2 feet or less. Winds and waves higher in and near thunderstorms. See Lake Erie open lakes forecast for Thursday through Saturday. The water temperature off Toledo is 58 degrees, off Cleveland 54 degrees, and off Erie 56 degrees. $$ LEZ142-143-190215- Maumee Bay to Reno Beach OH-Reno Beach to The Islands OH- 339 PM EDT Mon May 18 2026 ...SEVERE THUNDERSTORM WATCH 223 IN EFFECT UNTIL 9 PM EDT THIS EVENING... .TONIGHT...Southwest winds 15 to 20 knots diminishing to 10 to 15 knots. Showers likely with a chance of thunderstorms this evening, then a slight chance of showers and thunderstorms after midnight. Waves 2 feet or less. .TUESDAY...South winds 10 to 15 knots becoming southwest 15 to 20 knots. A chance of showers with a slight chance of thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Waves 1 to 3 feet. .TUESDAY NIGHT...Southwest winds 15 to 20 knots becoming northwest 10 to 15 knots. Showers likely with a chance of thunderstorms. Waves 1 to 3 feet. .WEDNESDAY...North winds 10 to 15 knots becoming northeast. A chance of showers in the morning. Waves 2 feet or less. Winds and waves higher in and near thunderstorms. See Lake Erie open lakes forecast for Thursday through Saturday. The water temperature off Toledo is 58 degrees, off Cleveland 54 degrees, and off Erie 56 degrees. $$ LEZ145>147-190215- Vermilion to Avon Point OH-Avon Point to Willowick OH- Willowick to Geneva-on-the Lake OH- 339 PM EDT Mon May 18 2026 .TONIGHT...Southwest winds 5 to 15 knots becoming south. A chance of showers and thunderstorms this evening, then a slight chance of showers and thunderstorms after midnight. Waves 2 feet or less. .TUESDAY...South winds 10 to 15 knots becoming southwest 15 to 20 knots. A slight chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. Waves 1 to 3 feet. .TUESDAY NIGHT...Southwest winds 15 to 20 knots becoming northwest 10 to 15 knots. Showers with a chance of thunderstorms. Waves 1 to 3 feet. .WEDNESDAY...North winds 10 to 15 knots. Showers likely in the morning. Waves 1 to 3 feet. Winds and waves higher in and near thunderstorms. See Lake Erie open lakes forecast for Thursday through Saturday. The water temperature off Toledo is 58 degrees, off Cleveland 54 degrees, and off Erie 56 degrees. $$ LEZ148-149-190215- Geneva-on-the-Lake to Conneaut OH-Conneaut OH to Ripley NY- 339 PM EDT Mon May 18 2026 .TONIGHT...Southwest winds 5 to 10 knots becoming south. A slight chance of showers and thunderstorms. A slight chance of showers late. Waves 1 foot or less. .TUESDAY...South winds 10 to 15 knots becoming southwest. A chance of showers in the morning, then a slight chance of showers and thunderstorms in the afternoon. Waves 2 feet or less. .TUESDAY NIGHT...Southwest winds 10 to 15 knots becoming west. Showers with a chance of thunderstorms. Waves 1 to 3 feet. .WEDNESDAY...Northwest winds 5 to 15 knots. Showers likely in the morning. Waves 1 to 3 feet. Winds and waves higher in and near thunderstorms. See Lake Erie open lakes forecast for Thursday through Saturday. The water temperature off Toledo is 58 degrees, off Cleveland 54 degrees, and off Erie 56 degrees. $$  447 FZUS53 KGRR 181939 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 339 PM EDT Mon May 18 2026 For waters within five nautical miles of shore on Lake Michigan LMZ849-190800- Pentwater to Manistee MI- 339 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .THROUGH EARLY EVENING...South winds 20 to 25 knots. Mostly cloudy with a chance of showers and thunderstorms. Waves 3 to 5 feet. .TONIGHT...South winds to 30 knots. Partly cloudy in the evening, then rain showers likely and a chance of thunderstorms after midnight. Patchy fog after midnight. Waves 4 to 6 feet. .TUESDAY...South winds to 30 knots. Rain showers likely and a chance of thunderstorms. Patchy fog. Waves 5 to 7 feet. .TUESDAY NIGHT...West winds 10 to 20 knots veering north in the late evening and overnight. Partly cloudy. Waves 3 to 5 feet. .WEDNESDAY...North winds 15 to 25 knots. Sunny. Waves 2 to 3 feet. .WEDNESDAY NIGHT...Northeast winds 10 to 20 knots decreasing to 5 to 10 knots after midnight. Partly cloudy. Waves 2 to 3 feet. .THURSDAY...Northeast winds 5 to 10 knots backing north 10 to 15 knots early in the afternoon. Mostly sunny. Waves around 1 foot. .FRIDAY...East winds 10 to 20 knots. Mostly cloudy. Waves 1 foot or less. .SATURDAY...Northeast winds 10 to 15 knots. Mostly cloudy with a chance of rain showers. Waves 1 foot or less. $$ LMZ848-190800- Whitehall to Pentwater MI- 339 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .THROUGH EARLY EVENING...South winds 20 to 25 knots. Mostly cloudy with a chance of thunderstorms and a slight chance of rain showers. Waves 4 to 6 feet. .TONIGHT...South winds to 30 knots. Mostly cloudy with a chance of showers and thunderstorms. Patchy fog after midnight. Waves 4 to 6 feet. .TUESDAY...South winds to 30 knots. Rain showers likely and a chance of thunderstorms. Patchy fog. Waves 5 to 7 feet. .TUESDAY NIGHT...West winds 20 to 25 knots veering north 15 to 20 knots in the late evening and overnight. Partly cloudy. Waves 3 to 5 feet. .WEDNESDAY...North winds 15 to 25 knots. Sunny. Waves 2 to 4 feet. .WEDNESDAY NIGHT...North winds 15 to 25 knots veering northeast 10 to 15 knots in the late evening and overnight. Partly cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. .THURSDAY...Northeast winds 10 to 15 knots backing north early in the afternoon. Mostly sunny. Waves around 1 foot. .FRIDAY...East winds 15 to 20 knots. Mostly cloudy. Waves around 1 foot. .SATURDAY...Northeast winds 15 to 20 knots. Mostly cloudy. Waves around 1 foot. $$ LMZ847-190800- Grand Haven to Whitehall MI- 339 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .THROUGH EARLY EVENING...South winds 20 to 25 knots. Rain showers likely and a chance of thunderstorms. Waves 3 to 5 feet. .TONIGHT...South winds to 30 knots. Mostly cloudy with a chance of showers and thunderstorms. Patchy fog after midnight. Waves 4 to 6 feet. .TUESDAY...Southwest winds to 30 knots. Rain showers likely and a chance of thunderstorms. Patchy fog. Waves 5 to 7 feet. .TUESDAY NIGHT...Northwest winds 15 to 25 knots veering north after midnight. Mostly cloudy. Waves 3 to 5 feet. .WEDNESDAY...North winds 15 to 25 knots. Sunny. Waves 2 to 4 feet. .WEDNESDAY NIGHT...North winds 15 to 25 knots veering northeast 10 to 15 knots after midnight. Partly cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. .THURSDAY...East winds 10 to 15 knots backing north early in the afternoon. Mostly sunny. Waves 1 foot or less. .FRIDAY...East winds 15 to 20 knots. Mostly cloudy. Waves around 1 foot. .SATURDAY...East winds 15 to 20 knots backing northeast 10 to 15 knots early in the afternoon. Mostly cloudy with a chance of rain showers. Waves around 1 foot. $$ LMZ846-190800- Holland to Grand Haven MI- 339 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .THROUGH EARLY EVENING...South winds 20 to 25 knots. Mostly cloudy with a chance of showers and thunderstorms. Waves 3 to 5 feet. .TONIGHT...South winds to 30 knots. Mostly cloudy with a chance of showers and thunderstorms. Patchy fog after midnight. Waves 3 to 5 feet. .TUESDAY...Southwest winds to 30 knots. Rain showers likely and a chance of thunderstorms. Patchy fog. Waves 5 to 7 feet. .TUESDAY NIGHT...Northwest winds 15 to 20 knots veering north after midnight. Mostly cloudy. Waves 2 to 4 feet. .WEDNESDAY...North winds 15 to 25 knots. Mostly sunny. Waves 3 to 5 feet. .WEDNESDAY NIGHT...North winds 15 to 25 knots veering northeast around 15 knots after midnight. Partly cloudy. Waves 3 to 5 feet subsiding to 1 to 2 feet after midnight. .THURSDAY...Northeast winds 10 to 15 knots. Mostly sunny. Waves around 1 foot. .FRIDAY...East winds 15 to 20 knots. Mostly cloudy. Waves 1 to 2 feet. .SATURDAY...East winds 15 to 20 knots backing north 10 to 15 knots early in the afternoon. Mostly cloudy with a chance of rain showers. Waves around 1 foot. $$ LMZ845-190800- South Haven to Holland MI- 339 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT TUESDAY THROUGH TUESDAY EVENING... .THROUGH EARLY EVENING...South winds around 20 knots. Rain showers likely and a chance of thunderstorms. Waves 2 to 4 feet. .TONIGHT...South winds 15 to 25 knots. Mostly cloudy with a chance of showers and thunderstorms. Waves 2 to 4 feet. .TUESDAY...Southwest winds to 30 knots. Partly sunny with a chance of showers and thunderstorms. Waves 4 to 6 feet. .TUESDAY NIGHT...Northwest winds 15 to 20 knots veering north after midnight. Mostly cloudy. Waves 2 to 4 feet. .WEDNESDAY...North winds 15 to 25 knots. Mostly sunny. Waves 3 to 5 feet. .WEDNESDAY NIGHT...North winds 15 to 25 knots veering northeast around 15 knots after midnight. Partly cloudy. Waves 3 to 5 feet subsiding to 1 to 3 feet after midnight. .THURSDAY...Northeast winds 10 to 15 knots. Mostly sunny. Waves around 1 foot. .FRIDAY...East winds 15 to 20 knots. Mostly cloudy. Waves around 1 foot. .SATURDAY...Northeast winds 10 to 15 knots backing northwest early in the afternoon. Mostly cloudy with a chance of rain showers. Waves around 1 foot. $$ LMZ844-190800- St Joseph to South Haven MI- 339 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT TUESDAY THROUGH TUESDAY EVENING... .THROUGH EARLY EVENING...Southwest winds around 20 knots. Rain showers likely and a chance of thunderstorms. Waves 2 to 3 feet. .TONIGHT...South winds 15 to 25 knots. Mostly cloudy with a chance of showers and thunderstorms. Waves 2 to 4 feet. .TUESDAY...Southwest winds 20 to 25 knots. Partly sunny with a chance of showers and thunderstorms. Waves 3 to 5 feet. .TUESDAY NIGHT...Northwest winds around 15 knots veering north after midnight. Mostly cloudy with rain showers likely and a chance of thunderstorms. Waves 2 to 4 feet. .WEDNESDAY...North winds 15 to 25 knots. Mostly sunny. Waves 3 to 5 feet. .WEDNESDAY NIGHT...North winds 15 to 25 knots veering northeast 10 to 15 knots in the late evening and overnight. Partly cloudy. Waves 3 to 5 feet. .THURSDAY...Northeast winds 10 to 15 knots. Mostly sunny. Waves 1 to 3 feet. .FRIDAY...East winds 15 to 20 knots. Mostly cloudy with a chance of rain showers. Waves around 1 foot. .SATURDAY...East winds 10 to 15 knots backing northwest early in the afternoon. Mostly cloudy. Waves 1 foot or less. $$  992 FZUS53 KIWX 181947 NSHIWX Nearshore Marine Forecast National Weather Service Northern Indiana 347 PM EDT Mon May 18 2026 For waters within five nautical miles of shore on Lake Michigan LMZ046-190215- Michigan City IN to New Buffalo MI- 347 PM EDT Mon May 18 2026 .TONIGHT...South winds 10 to 15 knots increasing to 15 to 20 knots. A few gusts up to 25 knots. A slight chance of showers and thunderstorms this evening. Waves 1 to 3 feet. .TUESDAY...South winds 15 to 20 knots becoming southwest. A few gusts up to 25 knots. A chance of showers with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. Waves 1 to 3 feet. .TUESDAY NIGHT...West winds 10 to 15 knots becoming north. Showers likely with a chance of thunderstorms in the evening, then a chance of showers overnight. Waves 2 to 3 feet. .WEDNESDAY...North winds 10 to 15 knots. Mostly sunny. Waves 2 to 4 feet. Winds and waves higher in and near thunderstorms. The water temperature at St. Joseph is 55 degrees and at Michigan City is 53 degrees. $$ LMZ043-190215- New Buffalo MI to St Joseph MI- 347 PM EDT Mon May 18 2026 .TONIGHT...South winds 10 to 15 knots increasing to 15 to 20 knots. A few gusts up to 25 knots. A slight chance of showers and thunderstorms this evening. Waves 1 to 3 feet. .TUESDAY...South winds 15 to 20 knots becoming southwest. A few gusts up to 25 knots. A chance of showers with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. Waves 2 to 4 feet. .TUESDAY NIGHT...West winds 10 to 15 knots becoming north. Showers likely with a chance of thunderstorms in the evening, then a chance of showers overnight. Waves 2 to 3 feet. .WEDNESDAY...North winds 10 to 15 knots. Mostly sunny. Waves 2 to 4 feet. Winds and waves higher in and near thunderstorms. The water temperature at St. Joseph is 55 degrees and at Michigan City is 53 degrees. $$  566 FZUS53 KGRB 181958 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 258 PM CDT Mon May 18 2026 For waters within five nautical miles of shore on Lake Michigan LMZ521-522-182200- Green Bay south of line from Cedar River to Rock Island Passage and north of a line from Oconto WI to Little Sturgeon Bay WI- Green Bay south of line from Oconto WI to Little Sturgeon Bay WI- 258 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY EVENING... .THIS AFTERNOON...E wind 10 to 15 kts. Waves 2 ft or less. A slight chance of showers and thunderstorms. .TONIGHT...SE wind 10 to 15 kts veering S after midnight. Waves 2 ft or less. Patchy fog. a chance of showers and thunderstorms. .TUESDAY...SW wind 15 to 25 kts veering NW 10 to 15 kts early in the afternoon. Waves 1 to 3 ft. A chance of showers in the morning. .TUESDAY NIGHT...NW wind 10 to 15 kts. Waves 2 ft or less. Mostly cloudy in the evening then becoming partly cloudy. $$ LMZ541-182200- Rock Island Passage to Sturgeon Bay WI- 258 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 1 AM CDT TUESDAY THROUGH LATE TUESDAY NIGHT... .THIS AFTERNOON...SE wind 5 to 10 kts. Waves 3 to 5 ft. Patchy fog. a slight chance of showers and thunderstorms. .TONIGHT...S wind 10 to 15 kts. Waves 2 to 4 ft building to 4 to 7 ft after midnight. Patchy dense fog in the evening. Areas of dense fog after midnight. a chance of showers in the evening. A chance of thunderstorms. Rain showers after midnight. .TUESDAY...SW wind 15 to 25 kts veering NW 10 to 20 kts early in the afternoon. Waves 4 to 7 ft. Patchy fog in the morning. a chance of showers. .TUESDAY NIGHT...NW wind 10 to 15 kts. Waves 2 to 4 ft subsiding to 1 to 3 ft after midnight. Mostly cloudy in the evening then becoming partly cloudy. $$ LMZ542-543-182200- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 258 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 1 AM CDT TUESDAY THROUGH LATE TUESDAY NIGHT... .THIS AFTERNOON...SE wind 5 to 10 kts. Waves 3 to 5 ft. Patchy fog. a slight chance of showers and thunderstorms. .TONIGHT...S wind 10 to 15 kts. Waves 2 to 4 ft building to 4 to 7 ft after midnight. Patchy fog. a chance of showers and thunderstorms. .TUESDAY...SW wind 15 to 25 kts veering W early in the afternoon. Waves 4 to 7 ft. Patchy fog in the morning. a chance of showers in the morning. .TUESDAY NIGHT...NW wind 10 to 15 kts. Waves 2 to 4 ft. Mostly cloudy in the evening then becoming partly cloudy. $$ See Lake Michigan Open Lake Forecast for Thursday through Saturday. Wave height forecast is for ice free areas.