Great Lakes Forecast
Issued by NWS
Issued by NWS
307 FZUS63 KMKX 081441 GLFLM OPEN LAKE FORECAST for Lake Michigan National Weather Service Milwaukee/Sullivan WI 841 AM CST Sat Nov 8 2025 FOR WATERS BEYOND 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 wave, along with the average height of the highest 10% of the waves which will occasionally be encountered. .SYNOPSIS... Light to modest north to northeast winds today into the evening. Low pressure around 29.7 inches will then move quickly from the Central Great Plains this morning to the Ohio River Valley tonight. North to northeast winds will pick up late this evening as the low approaches, becoming north to northwest later tonight into Sunday behind the low. Gusts Sunday and Sunday night may reach gale force, and a Gale Watch has been issued for the southern half of the lake. Heavy lake effect snow showers are expected for Sunday night into Monday. Winds will vary between northwest and southwest the first half of next week, while remaining gusty through this period. Winds may approach or hit gale force at times again Tuesday through Wednesday. LMZ261-362-364-366-563-565-567-868-082215- Lake Michigan from Seul Choix Point to Rock Island Passage 5 NM offshore to Mid Lake- Lake Michigan South of a line from Seul Choix Point to the Mackinac Bridge and north of a line from Charlevoix MI to South Fox Island 5 NM offshore- Lake Michigan from Charlevoix to Point Betsie MI 5 NM offshore to Mid Lake- Lake Michigan from Point Betsie to Manistee MI 5 NM offshore to Mid Lake- Lake Michigan from Rock Island Passage to Sturgeon Bay WI- Lake Michigan from Sturgeon Bay to Two Rivers WI 5 NM offshore to Mid Lake- Lake Michigan from Two Rivers to Sheboygan WI 5 NM offshore to Mid Lake- Lake Michigan from Pentwater to Manistee MI 5 NM offshore to Mid Lake- 841 AM CST Sat Nov 8 2025 SHEBOYGAN WI TO PENTWATER MI NORTH... .REST OF TODAY...North winds 5 to 10 kt increasing to 10 to 15 kt. Slight chance of rain this afternoon. Waves 2 to 4 ft subsiding to 1 to 2 ft. .TONIGHT...North winds 10 to 20 kt increasing to 15 to 25 kt. Chance of rain and snow. Waves 1 to 3 ft building to 4 to 7 ft occasionally to 9 ft. .SUNDAY...North winds to 30 kt. Snow showers likely. Waves 6 to 9 ft occasionally to 12 ft. .SUNDAY NIGHT...North winds to 30 kt. Snow showers likely in the evening, then chance of snow showers overnight. Waves 8 to 11 ft occasionally to 14 ft. .MONDAY...North winds to 30 kt becoming northwest. Snow showers likely. Waves 7 to 10 ft occasionally to 13 ft. .MONDAY NIGHT...Northwest winds 15 to 25 kt becoming west 10 to 20 kt. Chance of snow showers. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 7 ft occasionally to 9 ft. .TUESDAY...Southwest winds to 30 kt. Chance of rain and snow showers. Waves 5 to 8 ft occasionally to 10 ft building to 10 to 14 ft occasionally to 18 ft. .WEDNESDAY...West winds to 30 kt. Chance of rain showers. Waves 7 to 10 ft occasionally to 13 ft. $$ LMZ080-669-671-673-675-777-779-870-872-874-876-878-082215- Lake Michigan from Michigan City IN to St. Joseph MI 5 NM offshore to Mid Lake- Lake Michigan from Sheboygan to Port Washington WI 5 NM offshore to Mid Lake- Lake Michigan from Port Washington to North Point Light WI 5 NM offshore to Mid Lake- Lake Michigan from North Point Light to Wind Point WI 5 NM offshore to Mid Lake- Lake Michigan from Wind Point WI to Winthrop Harbor IL 5 NM offshore to Mid Lake- Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5 NM offshore to Mid Lake- Lake Michigan from Wilmette Harbor IL to Michigan City IN 5 NM offshore to Mid Lake- Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to Mid Lake- Lake Michigan from Grand Haven to Whitehall MI 5 NM offshore to Mid Lake- Lake Michigan from Holland to Grand Haven MI 5 NM offshore to Mid Lake- Lake Michigan from South Haven to Holland MI 5 NM offshore to Mid Lake- Lake Michigan from St. Joseph to South Haven MI 5 NM offshore to Mid Lake- 841 AM CST Sat Nov 8 2025 SHEBOYGAN WI TO PENTWATER MI SOUTH... ...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH LATE SUNDAY NIGHT... .REST OF TODAY...Northeast winds 10 to 15 kt. Slight chance of rain through mid morning, then chance of rain this afternoon. Waves 3 to 5 ft subsiding to 2 to 4 ft. .TONIGHT...Northeast winds 10 to 20 kt becoming north 15 to 25 kt after midnight, then increasing to 30 kt late. Rain. Waves 2 to 4 ft building to 6 to 9 ft occasionally to 12 ft. .SUNDAY...North gales to 35 kt becoming northwest to 30 kt. Rain showers with snow showers likely in the morning, then snow showers likely in the afternoon. Waves 8 to 11 ft occasionally to 14 ft building to 10 to 14 ft occasionally to 18 ft. .SUNDAY NIGHT...North winds to 30 kt. Snow showers in the evening, then snow showers likely overnight. Waves 10 to 14 ft occasionally to 18 ft. .MONDAY...North winds to 30 kt becoming northwest. Snow showers likely. Waves 10 to 14 ft occasionally to 18 ft. .MONDAY NIGHT...Northwest winds to 30 kt becoming west. Chance of rain and snow showers. Waves 8 to 12 ft occasionally to 16 ft subsiding to 7 to 10 ft occasionally to 13 ft. .TUESDAY...Southwest winds to 30 kt increasing to gales to 35 kt. Chance of rain and snow showers. Waves 8 to 11 ft occasionally to 14 ft building to 10 to 14 ft occasionally to 18 ft. .WEDNESDAY...West winds to 30 kt increasing to gales to 35 kt. Chance of rain showers. Waves 12 to 16 ft occasionally to 21 ft. $$ LMZ761-082215- MAFOR 0817/ MICHIGAN NORTH 11800 12810 12820 11836 12847. A chance of snow tonight. Waves 2 feet or less this afternoon. Waves 2 feet or less building to 3 to 6 feet tonight. Waves 5 to 9 feet Sunday morning. MICHIGAN SOUTH 12110 11116 11126 11136 11846 11847 11857. Waves 2 to 4 feet subsiding to 1 to 3 feet this afternoon. Waves 1 to 3 feet building to 5 to 8 feet tonight. Waves 8 to 12 feet Sunday morning. $$ Wagner Experimental modernized open lake forecast is available online at weather.gov/mkx/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes