National Weather Service Marine Forecast FZUS63 KMKX

FZUS63 KMKX 132051
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
251 PM CST Tue Jan 13 2026

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

Gusty west to southwest winds are expected across Lake Michigan through this evening as low pressure continues to cross Ontario. A strong, Arctic cold front will drop down Lake Michigan overnight. Northwest winds will rapidly increase to gale force behind the front, with gales ending Wednesday evening. Gale Warnings are in effect for all of Lake Michigan. Moderate to occasionally heavy freezing spray is also expected during this time.

By late Wednesday night, high pressure of 30.3 inches will build into the Plains, and eventually cross the Upper Great Lakes on Thursday. Low pressure of 29.4 inches will cross Lake Superior on Friday and stall over the lower Great Lakes Saturday while weakening to 29.5 inches. Colder air on the back side of the low will overspread Lake Michigan on gusty westerly winds on Saturday.

LMZ261-362-364-366-563-565-140430
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
251 PM CST Tue Jan 13 2026

TWO RIVERS WI TO MANISTEE MI NORTH...

GALE WARNING IN EFFECT FROM MIDNIGHT CST TONIGHT THROUGH WEDNESDAY EVENING

TONIGHT
West winds to 30 kt becoming northwest gales to 35 kt, then increasing to gales to 40 kt late. Isolated rain and snow showers this evening, then scattered snow showers overnight. Freezing spray overnight. Waves 4 to 7 ft occasionally to 9 ft building to 8 to 12 ft occasionally to 16 ft.

WEDNESDAY
North gales to 40 kt. Freezing spray. Scattered snow showers in the morning, then slight chance of snow showers in the afternoon. Waves 12 to 16 ft occasionally to 21 ft.

WEDNESDAY NIGHT
North gales to 40 kt diminishing to winds to 15 to 25 kt. Freezing spray. Waves 10 to 14 ft occasionally to 18 ft subsiding to 6 to 9 ft occasionally to 12 ft.

THURSDAY
Northwest winds 10 to 20 kt backing to southwest. Waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to 4 ft.

THURSDAY NIGHT
Southwest winds to 30 kt. Freezing spray in the evening. Chance of snow. Waves 6 to 9 ft occasionally to 12 ft.

FRIDAY
West winds 10 to 20 kt. Snow likely in the morning, then chance of snow in the afternoon. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 6 ft occasionally to 8 ft.

FRIDAY NIGHT
Northwest winds 10 to 20 kt increasing to 15 to 25 kt. Chance of snow. Waves 4 to 6 ft occasionally to 8 ft.

SATURDAY
North winds 15 to 25 kt diminishing to 10 to 20 kt. Chance of snow. Waves 4 to 6 ft occasionally to 8 ft.

SUNDAY
Northwest winds 15 to 25 kt becoming west. Freezing spray. Chance of snow. Waves 4 to 6 ft occasionally to 8 ft.

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LMZ080-567-669-671-673-675-777-779-868-870-872-874-876-878-140430
Lake Michigan from Michigan City IN to St. Joseph MI 5 NM offshore to Mid Lake
Lake Michigan from Two Rivers to Sheboygan WI 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 Pentwater to Manistee MI 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
251 PM CST Tue Jan 13 2026

TWO RIVERS WI TO MANISTEE MI SOUTH...

GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY EVENING

TONIGHT
West winds to 30 kt becoming northwest gales to 35 kt late. Isolated rain showers this evening, then scattered snow and rain showers overnight. Waves 4 to 7 ft occasionally to 9 ft building to 8 to 12 ft occasionally to 16 ft.

WEDNESDAY
North gales to 40 kt. Freezing spray. Snow showers in the morning, then chance of snow showers in the afternoon. Waves 14 to 18 ft occasionally to 23 ft.

WEDNESDAY NIGHT
North gales to 40 kt diminishing to 30 kt. Freezing spray. Chance of snow showers. Waves 12 to 16 ft occasionally to 21 ft subsiding to 8 to 12 ft occasionally to 16 ft.

THURSDAY
Northwest winds 15 to 25 kt becoming west 10 to 20 kt. Freezing spray in the morning. Waves 8 to 11 ft occasionally to 14 ft subsiding to 4 to 7 ft occasionally to 9 ft.

THURSDAY NIGHT
Southwest winds to 30 kt. Chance of snow in the evening, then snow overnight. Waves 6 to 9 ft occasionally to 12 ft building to 8 to 11 ft occasionally to 14 ft.

FRIDAY
West winds to 30 kt. Snow. Waves 8 to 11 ft occasionally to 14 ft subsiding to 6 to 9 ft occasionally to 12 ft.

FRIDAY NIGHT
West winds to 30 kt becoming northwest. Snow likely. Waves 6 to 9 ft occasionally to 12 ft.

SATURDAY
Northwest winds 15 to 25 kt. Freezing spray. Chance of snow. Waves 6 to 9 ft occasionally to 12 ft.

SUNDAY
West winds to 30 kt. Freezing spray. Chance of snow. Waves 6 to 9 ft occasionally to 12 ft.

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LMZ761-140430
MAFOR 1323/ MICHIGAN NORTH...GALE WARNING IN EFFECT...12640 11750 19756 11750 19757 11850 19857 11852 19857 12850. Waves 4 to 7 feet subsiding to 3 to 6 feet, then building to 7 to 11 feet tonight. Waves 10 to 14 feet Wednesday.

MICHIGAN SOUTH...GALE WARNING IN EFFECT...12640 11640 19647 11750 19756 11757 11857 11757 11850. Waves 4 to 7 feet subsiding to 3 to 6 feet, then building to 8 to 11 feet tonight. Waves 10 to 15 feet building to 12 to 16 feet Wednesday.

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Cronce

Experimental modernized open lake forecast is available online at weather.gov/mkx/glftable

Graphical marine forecasts are available online at: weather.gov/greatlakes