![National Oceanic and Atmospheric Administration](/build/images/header/noaa.d87e0251.png)
![National Weather Service](/build/images/header/nws.4e6585d8.png)
![United States Department of Commerce](/build/images/header/doc.b38ba91a.png)
Great Lakes Forecast
Issued by NWS
Issued by NWS
330 FZUS63 KMKX 160818 GLFLM OPEN LAKE FORECAST for Lake Michigan National Weather Service Milwaukee/Sullivan WI 318 AM CDT Fri Aug 16 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 near 29.6 inches over northern Wisconsin into northern Michigan will hold most of today before pressure rises begin later tonight behind a cold front. The low pressure will also bring scattered thunderstorms later this afternoon and early evening to most of Lake Michigan. Heavy rain and gusty winds can be expected with any storms. Winds will also shift and become north to northwest tonight into Saturday. A larger scale low pressure over the Great Lakes will keep the weather unsettled through Saturday evening with scattered showers and thunderstorms. Breezy northerly winds will also continue. These winds will gradually weaken early next week as high pressure arrives over the lake on Monday. It will also be dry to start off the new week. LMZ261-362-364-366-563-565-567-868-161530- 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- 318 AM CDT Fri Aug 16 2024 SHEBOYGAN WI TO PENTWATER MI NORTH... .TODAY...South winds 15 to 25 kt diminishing to 10 to 15 kt. Patchy fog this morning. Chance of showers and thunderstorms. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft. .TONIGHT...Southwest winds 10 to 15 kt veering to north. Showers likely with a chance of thunderstorms in the evening, then chance of showers and thunderstorms overnight. Waves 1 to 3 ft. .SATURDAY...North winds 10 to 20 kt. Chance of showers and thunderstorms. Waves 1 to 3 ft. .SATURDAY NIGHT...North winds 10 to 20 kt. Waves 3 to 5 ft. .SUNDAY...North winds 15 to 25 kt increasing to 30 kt. Waves 4 to 6 ft occasionally to 8 ft. .SUNDAY NIGHT...North winds to 30 kt diminishing to 15 to 25 kt. Waves 4 to 6 ft occasionally to 8 ft. .MONDAY...North winds 10 to 20 kt increasing to 15 to 25 kt. Waves 3 to 5 ft. .TUESDAY...Northeast winds 10 to 15 kt becoming north 10 to 20 kt. Waves 1 to 3 ft. $$ LMZ080-669-671-673-675-777-779-870-872-874-876-878-161530- 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- 318 AM CDT Fri Aug 16 2024 SHEBOYGAN WI TO PENTWATER MI SOUTH... .TODAY...South winds 10 to 20 kt diminishing to 10 to 15 kt. Patchy fog this morning. Slight chance of showers and thunderstorms this morning, then chance of showers and thunderstorms this afternoon. Waves 3 to 5 ft subsiding to 1 to 3 ft. .TONIGHT...Southwest winds 10 to 20 kt becoming west. 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 northwest. Chance of showers in the morning, then chance of showers and thunderstorms in the afternoon. Waves 3 to 5 ft. .SATURDAY NIGHT...Northwest winds 10 to 20 kt becoming north. Chance of showers in the evening. Waves 3 to 5 ft. .SUNDAY...North winds 15 to 25 kt increasing to 30 kt. Waves 5 to 8 ft occasionally to 10 ft. .SUNDAY NIGHT...North winds to 30 kt diminishing to 15 to 25 kt. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 7 ft occasionally to 9 ft. .MONDAY...North winds 10 to 20 kt increasing to 15 to 25 kt. Waves 4 to 6 ft occasionally to 8 ft. .TUESDAY...Northeast winds 10 to 15 kt becoming north 10 to 20 kt. Waves 2 to 4 ft. $$ LMZ761-161530- MAFOR 1610/ MICHIGAN NORTH 12430 11420 12410 11516 11710 11810. A chance of thunderstorms. Waves 3 to 6 feet subsiding to 1 to 3 feet today. Waves 1 to 3 feet tonight. MICHIGAN SOUTH 11430 11520 12510 12516 12620. A chance of thunderstorms early this morning. A chance of thunderstorms this afternoon. A chance of thunderstorms tonight. Waves 3 to 5 feet subsiding to 1 to 3 feet today. Waves 1 to 3 feet tonight. $$ KPL Experimental modernized open lake forecast is available online at weather.gov/mkx/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes