Great Lakes Forecast
Issued by NWS
Issued by NWS
736 FZUS63 KMKX 021402 GLFLM OPEN LAKE FORECAST for Lake Michigan National Weather Service Milwaukee/Sullivan WI 802 AM CST Mon Nov 2 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... Low pressure near 29.4 inches will progress into the Upper Mississippi River Valley by early tomorrow morning. Winds will steadily become gusty ahead of the low, approaching or exceeding gale force over the central third of the lake late Tuesday morning and Tuesday afternoon. Anticipate headlines becoming necessary by this afternoon or evening. Rain will accompany the approaching/passing low tonight through Tuesday night, with a few thunderstorms possibly mixing in. Severe weather is not expected at this time. 29.5 inch low pressure will stagnate over northern Wisconsin on Wednesday, steadily progressing from Lake Superior into Quebec Wednesday night into Friday morning. Progression of the low will result in a gradual trend toward westerly and eventually northwesterly winds Thursday into Friday. Winds will be breezy through this time frame, though they are expected to remain below gale thresholds. Winds will taper by the weekend as 30.0 inch high pressure builds into the western Great Lakes. LMZ261-362-364-366-563-565-567-868-022230- 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- 802 AM CST Mon Nov 2 2026 SHEBOYGAN WI TO PENTWATER MI NORTH... .REST OF TODAY...South winds 10 to 20 kt increasing to 30 kt. Slight chance of showers this afternoon. Waves 2 to 4 ft building to 5 to 8 ft occasionally to 10 ft. .TONIGHT...South winds to 30 kt. Chance of showers in the evening, then showers and slight chance of thunderstorms overnight. Waves 7 to 10 ft occasionally to 13 ft. .TUESDAY...South winds to 30 kt increasing to gales to 35 kt. Chance of showers. Waves 8 to 11 ft occasionally to 14 ft. .TUESDAY NIGHT...South winds to 30 kt. Showers likely in the evening, then showers overnight. Waves 7 to 10 ft occasionally to 13 ft subsiding to 6 to 9 ft occasionally to 12 ft. .WEDNESDAY...South winds to 30 kt. Showers in the morning, then showers likely in the afternoon. Waves 6 to 9 ft occasionally to 12 ft. .WEDNESDAY NIGHT...Southwest winds 10 to 20 kt. Chance of showers. Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. .THURSDAY...Southwest winds 15 to 25 kt becoming northwest. Showers likely. Waves 4 to 6 ft occasionally to 8 ft. .FRIDAY...North winds 15 to 25 kt. Chance of rain. Waves 4 to 6 ft occasionally to 8 ft. $$ LMZ080-669-671-673-675-777-779-870-872-874-876-878-022230- 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- 802 AM CST Mon Nov 2 2026 SHEBOYGAN WI TO PENTWATER MI SOUTH... .REST OF TODAY...South winds 10 to 20 kt increasing to 30 kt. Waves 3 to 5 ft building to 5 to 8 ft occasionally to 10 ft. .TONIGHT...South winds to 30 kt. Chance of showers. Waves 6 to 9 ft occasionally to 12 ft. .TUESDAY...South winds to 30 kt increasing to gales to 35 kt. Waves 8 to 11 ft occasionally to 14 ft. .TUESDAY NIGHT...South winds to 30 kt. Showers likely in the evening, then showers overnight. Waves 7 to 10 ft occasionally to 13 ft subsiding to 6 to 9 ft occasionally to 12 ft. .WEDNESDAY...South winds to 30 kt becoming southwest. Showers in the morning, then chance of showers in the afternoon. Waves 6 to 9 ft occasionally to 12 ft. .WEDNESDAY NIGHT...Southwest winds 15 to 25 kt diminishing to 10 to 20 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft. .THURSDAY...Southwest winds 15 to 25 kt becoming west. Chance of showers. Waves 4 to 6 ft occasionally to 8 ft. .FRIDAY...North winds 15 to 25 kt. Chance of rain. Waves 4 to 7 ft occasionally to 9 ft. $$ LMZ761-022230- MAFOR 0217/ MICHIGAN NORTH 13440 14446 11450. Waves 3 to 6 feet building to 4 to 7 feet this afternoon. Waves 5 to 9 feet tonight. Waves 7 to 10 feet Tuesday morning. MICHIGAN SOUTH 15440 11440 11450. A chance of showers tonight. Waves 3 to 6 feet building to 4 to 7 feet this afternoon. Waves 5 to 8 feet building to 6 to 9 feet tonight. Waves 6 to 10 feet Tuesday morning. $$ Quigley Experimental modernized open lake forecast is available online at weather.gov/mkx/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes