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Great Lakes Forecast
Issued by NWS
Issued by NWS
452 FZUS63 KMKX 301946 GLFLM OPEN LAKE FORECAST for Lake Michigan National Weather Service Milwaukee/Sullivan WI 246 PM CDT Sun Jun 30 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... Gusty north winds continue over the southern half of the lake this evening. Winds will weaken tonight into Monday and become predominately easterly (light and variable further north) as high pressure around 30.3 inches builds in from the Northern Plains. High pressure will advect east of the Lake Monday night, causing winds to become southeasterly and increase. South to southeast winds will linger into Tuesday night, before a cold front moves east across the region. Behind the cold front, southwest to west winds gradually decelerate throughout the day Wednesday. Weak high pressure passing over the lake Thursday will lead to light and variable winds. LMZ261-362-364-366-563-565-567-868-010330- 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- 246 PM CDT Sun Jun 30 2024 SHEBOYGAN WI TO PENTWATER MI NORTH... .TONIGHT...North winds 10 to 20 kt diminishing to 5 to 10 kt. Waves 2 to 4 ft subsiding to 1 to 2 ft. .MONDAY...West winds less than 10 kt becoming southwest late in the morning, then becoming 10 to 15 kt early in the afternoon becoming southwest 10 to 15 kt late. Waves 1 ft or less. .MONDAY NIGHT...South winds 5 to 10 kt increasing to 15 to 25 kt. Waves 1 to 2 ft building to 2 to 4 ft. .TUESDAY...South winds to 30 kt. Showers in the morning, then showers likely in the afternoon. Waves 5 to 8 ft occasionally to 10 ft. .TUESDAY NIGHT...South winds 15 to 25 kt. Showers likely with a chance of thunderstorms in the evening, then showers with a chance of thunderstorms overnight. Waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft. .WEDNESDAY...Southwest winds 10 to 20 kt increasing to 15 to 25 kt. Showers in the morning. Waves 3 to 5 ft. .WEDNESDAY NIGHT...West winds 10 to 20 kt diminishing to 10 to 15 kt. Waves 1 to 3 ft. .THURSDAY...West winds 5 to 10 kt becoming southwest 10 to 15 kt. Waves 1 to 2 ft. .FRIDAY...Southeast winds 10 to 15 kt increasing to 10 to 20 kt. Chance of showers. Waves 1 to 3 ft. $$ LMZ080-669-671-673-675-777-779-870-872-874-876-878-010330- 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- 246 PM CDT Sun Jun 30 2024 SHEBOYGAN WI TO PENTWATER MI SOUTH... .TONIGHT...North winds 15 to 25 kt becoming northeast 10 to 20 kt after midnight, then diminishing to 10 to 15 kt late. Waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to 4 ft. .MONDAY...East winds 10 to 15 kt diminishing to 5 to 10 kt. Waves 2 to 4 ft subsiding to 1 to 2 ft. .MONDAY NIGHT...East winds 10 to 15 kt becoming southeast late in the evening, then increasing to 10 to 20 kt after midnight increasing to 15 to 25 kt late. Waves 1 to 2 ft building to 3 to 5 ft. .TUESDAY...South winds to 30 kt. Chance of showers. Waves 5 to 8 ft occasionally to 10 ft. .TUESDAY NIGHT...South winds 15 to 25 kt. Chance of showers and thunderstorms in the evening, then showers with a chance of thunderstorms overnight. Waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft. .WEDNESDAY...Southwest winds 15 to 25 kt diminishing to 10 to 20 kt. Chance of showers in the morning. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft. .WEDNESDAY NIGHT...West winds 10 to 15 kt. Waves 1 to 3 ft. .THURSDAY...West winds 5 to 10 kt backing to south 10 to 15 kt. Waves 1 to 2 ft. .FRIDAY...South winds 10 to 20 kt becoming southwest. Chance of showers. Waves 1 to 3 ft. $$ LMZ761-010330- MAFOR 3022/ MICHIGAN NORTH 11820 12810 12800 11500 12510. Waves 2 to 4 feet subsiding to 1 foot or less tonight. Waves 1 foot or less Monday. MICHIGAN SOUTH 12830 11120 11110 11210 11200 12300. Waves 4 to 7 feet subsiding to 2 to 4 feet tonight. Waves 1 to 3 feet subsiding to 1 foot or less Monday. $$ Sheppard Experimental modernized open lake forecast is available online at weather.gov/mkx/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes