Great Lakes Forecast
Issued by NWS
Issued by NWS
524 FZUS63 KMKX 221950 GLFLM OPEN LAKE FORECAST for Lake Michigan National Weather Service Milwaukee/Sullivan WI 250 PM CDT Wed May 22 2024 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 around 29.1 inches will continue northeastward across Ontario, weakening to 29.3 inches tonight. Gusty southwest winds up to 30 kt will continue through this afternoon, especially over the northern half of the lake. Light to modest southwest winds will then prevail over the entire lake for tonight and Thursday. Winds will become east-southeast on Friday as a low pressure trough around 29.5 inches approaches from Wisconsin. Winds will shift to the west in the wake of the trough Friday night. High pressure around 29.9 inches will overspread the Lake Michigan on Saturday. Low pressure around 29.3 inches will slide across the Midwest Sunday and across Lower Michigan Monday. LMZ261-362-364-366-563-565-567-868-230315- 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- 250 PM CDT Wed May 22 2024 SHEBOYGAN WI TO PENTWATER MI NORTH... .TONIGHT...Southwest winds to 30 kt diminishing to 15 to 25 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to 4 ft. .THURSDAY...Southwest winds 15 to 25 kt. Waves 2 to 4 ft. .THURSDAY NIGHT...Southwest winds 15 to 25 kt diminishing to 10 to 15 kt late in the evening, then backing to east after midnight becoming east 10 to 15 kt late. Waves 2 to 4 ft subsiding to 1 to 2 ft. .FRIDAY...East winds 10 to 20 kt. Waves 1 to 2 ft building to 2 to 4 ft. .FRIDAY NIGHT...Southeast winds 15 to 25 kt becoming south. Showers with a chance of thunderstorms. Waves 2 to 4 ft. .SATURDAY...Southwest winds 10 to 20 kt. Waves 2 to 4 ft. .SATURDAY NIGHT...Southwest winds 10 to 20 kt becoming south 5 to 10 kt. Waves 1 to 3 ft. .SUNDAY...Southeast winds 10 to 15 kt becoming east 10 to 20 kt. Waves 1 to 2 ft. .MONDAY...North winds 10 to 20 kt. Chance of showers. Waves 2 to 4 ft. $$ LMZ080-669-671-673-675-777-779-870-872-874-876-878-230315- Lake Michigan from Michigan City IN to St. Joseph MI 5 NM offshore to Mid Lake- Lake Michigan from Sheboygan to Port Washington WI 5 NM offshore to Mid Lake- Lake Michigan from Port Washington to North Point Light WI 5 NM offshore to Mid Lake- Lake Michigan from North Point Light to Wind Point WI 5 NM offshore to Mid Lake- Lake Michigan from Wind Point WI to Winthrop Harbor IL 5 NM offshore to Mid Lake- Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5 NM offshore to Mid Lake- Lake Michigan from Wilmette Harbor IL to Michigan City IN 5 NM offshore to Mid Lake- Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to Mid Lake- Lake Michigan from Grand Haven to Whitehall MI 5 NM offshore to Mid Lake- Lake Michigan from Holland to Grand Haven MI 5 NM offshore to Mid Lake- Lake Michigan from South Haven to Holland MI 5 NM offshore to Mid Lake- Lake Michigan from St. Joseph to South Haven MI 5 NM offshore to Mid Lake- 250 PM CDT Wed May 22 2024 SHEBOYGAN WI TO PENTWATER MI SOUTH... .TONIGHT...West winds 15 to 25 kt becoming southwest 10 to 20 kt. Waves 3 to 5 ft subsiding to 2 to 4 ft. .THURSDAY...Southwest winds 10 to 15 kt becoming southeast 10 to 20 kt. Waves 1 to 3 ft. .THURSDAY NIGHT...Southeast winds 10 to 15 kt diminishing to 5 to 10 kt. Waves 1 to 3 ft subsiding to 1 to 2 ft. .FRIDAY...Southeast winds 10 to 20 kt. Waves 1 to 3 ft building to 2 to 4 ft. .FRIDAY NIGHT...South winds 10 to 20 kt becoming southwest. Showers likely with a chance of thunderstorms in the evening, then chance of showers and thunderstorms overnight. Waves 2 to 4 ft. .SATURDAY...West winds 10 to 20 kt becoming southwest. Waves 2 to 4 ft. .SATURDAY NIGHT...South winds 10 to 15 kt becoming southeast 5 to 10 kt. Waves 1 to 3 ft. .SUNDAY...East winds 10 to 15 kt increasing to 10 to 20 kt. Chance of showers and thunderstorms. Waves 1 to 3 ft. .MONDAY...Northwest winds 10 to 20 kt. Chance of showers. Waves 2 to 4 ft. $$ LMZ761-230315- MAFOR 2222/ MICHIGAN NORTH 12540 11520 13530 11520 11530. Waves 4 to 7 feet subsiding to 1 to 3 feet tonight. Waves 2 to 4 feet subsiding to 1 to 3 feet Thursday. MICHIGAN SOUTH 11530 11520 11510 11520 12510 12410. Waves 2 to 4 feet subsiding to 1 to 3 feet tonight. Waves 2 feet or less Thursday. $$ Sheppard Experimental modernized open lake forecast is available online at weather.gov/mkx/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes