Great Lakes Forecast
Issued by NWS
Issued by NWS
875 FZUS63 KMKX 210832 GLFLM OPEN LAKE FORECAST for Lake Michigan National Weather Service Milwaukee/Sullivan WI 332 AM CDT Fri Jun 21 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... Expect light northerly winds over Lake Michigan today as high pressure weakens over Lake Superior. Light northeast winds this evening will then shift to modest southerly over the southern half of the lake as a warm front moves northward. The warm front and southerly winds will then extend into the northern portion of the lake for Saturday followed by low pressure around 29.7 inches tracking east across central Lake Michigan early Saturday evening. A cold front will quickly follow with modest northwest winds over the entire lake for Sunday. Rounds of thunderstorms are expected across the lake at times from this afternoon into Saturday night. LMZ261-362-364-366-563-565-567-868-211530- 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- 332 AM CDT Fri Jun 21 2024 SHEBOYGAN WI TO PENTWATER MI NORTH... .TODAY...Northeast winds 5 to 10 kt becoming north. Slight chance of showers this morning, then chance of showers this afternoon. Waves 1 to 2 ft. .TONIGHT...Northeast winds 5 to 10 kt becoming east. Patchy fog. Chance of showers and thunderstorms in the evening, then showers likely with a chance of thunderstorms overnight. Waves 1 ft or less. .SATURDAY...Southeast winds 10 to 15 kt becoming south 10 to 20 kt. Patchy fog in the morning. Showers with a chance of thunderstorms. Waves 2 to 4 ft. .SATURDAY NIGHT...West winds 10 to 20 kt becoming northwest. Showers with a chance of thunderstorms in the evening. Waves 2 to 4 ft. .SUNDAY...Northwest winds 10 to 20 kt. Waves 1 to 3 ft. .SUNDAY NIGHT...Northwest winds 10 to 20 kt diminishing to 10 to 15 kt. Waves 1 to 3 ft. .MONDAY...Northwest winds 10 to 15 kt backing to southwest. Waves 1 to 2 ft. .TUESDAY...South winds 15 to 25 kt becoming southwest. Chance of showers and thunderstorms. Waves 2 to 4 ft. $$ LMZ080-669-671-673-675-777-779-870-872-874-876-878-211530- 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- 332 AM CDT Fri Jun 21 2024 SHEBOYGAN WI TO PENTWATER MI SOUTH... .TODAY...North winds 5 to 10 kt becoming northeast. Patchy fog this morning. Slight chance of showers this morning, then slight chance of showers and thunderstorms this afternoon. Waves 1 to 2 ft. .TONIGHT...Northeast winds 5 to 10 kt veering to south. Slight chance of showers and thunderstorms. Waves 1 to 2 ft. .SATURDAY...South winds 10 to 20 kt becoming southwest. Chance of showers and thunderstorms in the morning, then showers with a chance of thunderstorms in the afternoon. Waves 2 to 4 ft. .SATURDAY NIGHT...Southwest winds 10 to 20 kt becoming west. Showers with a chance of thunderstorms in the evening, then chance of showers and thunderstorms overnight. Waves 2 to 4 ft. .SUNDAY...Northwest winds 10 to 20 kt. Waves 2 to 4 ft. .SUNDAY NIGHT...Northwest winds 10 to 15 kt. Waves 1 to 3 ft. .MONDAY...Northwest winds 10 to 15 kt backing to south. Waves 1 to 3 ft. .TUESDAY...South winds 10 to 20 kt becoming southwest. Chance of showers and thunderstorms. Waves 2 to 4 ft. $$ LMZ761-211530- MAFOR 2110/ MICHIGAN NORTH 11100 13800 12100 11200 11206. A chance of thunderstorms tonight. Waves 1 foot or less. MICHIGAN SOUTH 13800 12100 11200 11300 11410. Waves 2 feet or less. $$ Gehring Experimental modernized open lake forecast is available online at weather.gov/mkx/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes