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Great Lakes Forecast
Issued by NWS
Issued by NWS
935 FZUS63 KMKX 131929 GLFLM OPEN LAKE FORECAST for Lake Michigan National Weather Service Milwaukee/Sullivan WI 229 PM CDT Tue Aug 13 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... Light & variable surface winds continue over the open waters through the remainder of today & tonight as 30.1 inch high pressure lingers across the region. The aforementioned high will gradually push east of the lake on Wednesday, allowing prevailing southeast winds to become established. Wind speeds will increase from Wednesday night through Thursday as 29.7 inch low pressure develops over the northern Great Plains & eventually approaches Lake Michigan. Gusts will are expected to remain well-below gale thresholds during this period, though a combination of elevated gusts and wave heights is likely to result in Small Craft Advisory conditions in nearshore zones on Thursday. Two rounds of showers and thunderstorms are expected from late Wednesday night through Thursday evening. A few storms moving across the open waters Thursday afternoon/evening could become strong to severe, with large hail and gusty winds being the primary concerns. Wind gusts will taper from Friday through the weekend. Additional scattered thunderstorms are possible across the lake during this timeframe, though coverage won`t be as widespread relative to Thursday`s activity. LMZ261-362-364-366-563-565-567-868-140315- 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- 229 PM CDT Tue Aug 13 2024 SHEBOYGAN WI TO PENTWATER MI NORTH... .TONIGHT...Southwest winds 5 to 10 kt becoming south. Patchy fog overnight. Waves 1 ft or less. .WEDNESDAY...South winds less than 10 kt becoming southwest. Waves nearly calm. .WEDNESDAY NIGHT...Northeast winds 5 to 10 kt becoming east late in the evening, then becoming southeast after midnight becoming 10 to 20 kt late. Waves 1 to 3 ft. .THURSDAY...Southeast winds 15 to 25 kt increasing to 30 kt. Chance of showers. Waves 4 to 6 ft occasionally to 8 ft building to 4 to 7 ft occasionally to 9 ft. .THURSDAY NIGHT...Southeast winds 15 to 25 kt diminishing to 10 to 20 kt. Showers with a chance of thunderstorms. Waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft. .FRIDAY...Southeast winds 10 to 20 kt becoming south. Showers likely with a chance of thunderstorms. Waves 3 to 5 ft. .FRIDAY NIGHT...Northwest winds 10 to 20 kt becoming north. Chance of showers. Waves 1 to 3 ft. .SATURDAY...North winds 10 to 20 kt. Chance of showers. Waves 1 to 3 ft. .SUNDAY...North winds 10 to 20 kt. Waves 2 to 4 ft. $$ LMZ080-669-671-673-675-777-779-870-872-874-876-878-140315- 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- 229 PM CDT Tue Aug 13 2024 SHEBOYGAN WI TO PENTWATER MI SOUTH... .TONIGHT...North winds 5 to 10 kt veering to east. Waves nearly calm. .WEDNESDAY...East winds less than 10 kt increasing to 10 to 15 kt. Waves 1 ft or less. .WEDNESDAY NIGHT...East winds 10 to 15 kt becoming southeast 10 to 20 kt. Waves 1 to 3 ft. .THURSDAY...Southeast winds 15 to 25 kt increasing to 30 kt. Showers likely in the morning, then showers with a chance of thunderstorms in the afternoon. Waves 4 to 6 ft occasionally to 8 ft building to 4 to 7 ft occasionally to 9 ft. .THURSDAY NIGHT...Southeast winds 15 to 25 kt becoming south 10 to 20 kt. Showers with a chance of thunderstorms. Waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft. .FRIDAY...South winds 10 to 20 kt becoming southwest. Chance of showers and thunderstorms. Waves 3 to 5 ft. .FRIDAY NIGHT...West winds 10 to 15 kt becoming northwest 10 to 20 kt. Chance of showers. Waves 1 to 3 ft. .SATURDAY...Northwest winds 10 to 20 kt. Chance of showers. Waves 2 to 4 ft. .SUNDAY...Northwest winds 10 to 20 kt becoming north. Waves 3 to 5 ft. $$ LMZ761-140315- MAFOR 1322/ MICHIGAN NORTH 11510 11500 14400 11400 11500. Waves 1 foot or less. MICHIGAN SOUTH 11800 11100 14200 11300 11210. Waves 1 foot or less. $$ Quigley Experimental modernized open lake forecast is available online at weather.gov/mkx/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes