Great Lakes Forecast
Issued by NWS
Issued by NWS
046 FZUS63 KMKX 140844 GLFLM OPEN LAKE FORECAST for Lake Michigan National Weather Service Milwaukee/Sullivan WI 244 AM CST Fri Nov 14 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... Expect moderate southerly winds to build across Lake Michigan today as high pressure around 30.3 inches over the southeastern US continues to slide southeastward. Winds begin to shift to the southwest into Saturday as a secondary low pressure around 29.3 tracks across the Upper Great Lakes. This will also drag a cold front across the region through the day Saturday with west to northwesterly winds increasing across Lake Michigan into Sunday. Winds gusts will approach gale force during this timeframe, especially for northeastern nearshore zones in the far northern third of the lake Saturday night into Sunday. While potential for gales persist, still a bit of uncertainty on exceeding 34 knots for extended period. Thus will to hold off on any gale headlines at this time. Winds then look to diminish into the start of next week as high pressure builds into the Upper Midwest. LMZ261-362-364-366-563-565-567-868-141615- 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- 244 AM CST Fri Nov 14 2025 SHEBOYGAN WI TO PENTWATER MI NORTH... .TODAY...Southeast winds 10 to 15 kt increasing to 10 to 20 kt. Waves 1 to 3 ft. .TONIGHT...South winds 10 to 20 kt increasing to 15 to 25 kt. Waves 1 to 3 ft building to 4 to 6 ft occasionally to 8 ft. .SATURDAY...Southwest winds 15 to 25 kt becoming west late in the morning, then becoming northwest to 30 kt early in the afternoon increasing to gales to 35 kt late. Chance of rain. Waves 4 to 7 ft occasionally to 9 ft. .SATURDAY NIGHT...Northwest gales to 40 kt diminishing to gales to 35 kt. Chance of snow overnight. Waves 7 to 10 ft occasionally to 13 ft. .SUNDAY...Northwest gales to 35 kt. Chance of snow. Waves 7 to 10 ft occasionally to 13 ft subsiding to 6 to 9 ft occasionally to 12 ft. .SUNDAY NIGHT...Northwest gales to 35 kt diminishing to 30 kt. Chance of snow. Waves 6 to 9 ft occasionally to 12 ft. .MONDAY...Northwest winds 15 to 25 kt diminishing to 10 to 20 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft. .TUESDAY...North winds 10 to 15 kt. Waves 1 to 2 ft. $$ LMZ080-669-671-673-675-777-779-870-872-874-876-878-141615- Lake Michigan from Michigan City IN to St. Joseph MI 5 NM offshore to Mid Lake- Lake Michigan from Sheboygan to Port Washington WI 5 NM offshore to Mid Lake- Lake Michigan from Port Washington to North Point Light WI 5 NM offshore to Mid Lake- Lake Michigan from North Point Light to Wind Point WI 5 NM offshore to Mid Lake- Lake Michigan from Wind Point WI to Winthrop Harbor IL 5 NM offshore to Mid Lake- Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5 NM offshore to Mid Lake- Lake Michigan from Wilmette Harbor IL to Michigan City IN 5 NM offshore to Mid Lake- Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to Mid Lake- Lake Michigan from Grand Haven to Whitehall MI 5 NM offshore to Mid Lake- Lake Michigan from Holland to Grand Haven MI 5 NM offshore to Mid Lake- Lake Michigan from South Haven to Holland MI 5 NM offshore to Mid Lake- Lake Michigan from St. Joseph to South Haven MI 5 NM offshore to Mid Lake- 244 AM CST Fri Nov 14 2025 SHEBOYGAN WI TO PENTWATER MI SOUTH... .TODAY...South winds 10 to 15 kt increasing to 10 to 20 kt. Waves 2 to 4 ft. .TONIGHT...South winds 10 to 20 kt becoming southwest 15 to 25 kt. Waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft. .SATURDAY...Southwest winds 15 to 25 kt veering to northwest to 30 kt. Waves 5 to 8 ft occasionally to 10 ft. .SATURDAY NIGHT...Northwest winds to 30 kt. Waves 10 to 14 ft occasionally to 18 ft. .SUNDAY...Northwest winds to 30 kt. Waves 10 to 14 ft occasionally to 18 ft. .SUNDAY NIGHT...Northwest winds to 30 kt. Waves 8 to 12 ft occasionally to 16 ft subsiding to 8 to 11 ft occasionally to 14 ft. .MONDAY...Northwest winds 10 to 20 kt diminishing to 10 to 15 kt. Waves 5 to 8 ft occasionally to 10 ft subsiding to 3 to 5 ft. .TUESDAY...Northeast winds 10 to 20 kt diminishing to 10 to 15 kt. Waves 2 to 4 ft. $$ LMZ761-141615- MAFOR 1411/ MICHIGAN NORTH 13310 11320 11420 13430. Waves 2 feet or less today. Waves 1 to 3 feet building to 3 to 5 feet tonight. MICHIGAN SOUTH 14410 12420 12430. Waves 1 to 3 feet today. Waves 1 to 3 feet building to 3 to 5 feet tonight. $$ Wagner Experimental modernized open lake forecast is available online at weather.gov/mkx/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes