Expires:202405041515;;592521 FZUS63 KMKX 040748 GLFLM OPEN LAKE FORECAST for Lake Michigan National Weather Service Milwaukee/Sullivan WI 248 AM CDT Sat May 4 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... Areas of patchy fog are possible from predawn through the morning hours today over the open waters, though confidence regarding the precise placement of any development remains low. Will monitor trends over the next several hours and make forecast adjustments as necessary. A weak, 29.9 inch low pressure center will approach from the west today, dragging a cold front across the open waters in the process. Scattered showers and thunderstorms will be possible along the front. Most activity is expected to remain sub-severe, though an isolated strong storm with small hail and gusty winds can't be ruled out. A 30.1 inch high pressure will approach from the northern Great Plains on Sunday, resulting in light & variable surface winds. Winds will begin to shift out of the east-southeast Monday afternoon & evening as a 29.1 inch low pressure center develops over the northern Great Plains. Winds will pivot between southeasterly and southwesterly through mid- week, prior to turning out of the north and northwest on Thursday & Friday as a 29.6 inch low pressure center moves east of the open waters. Periods of showers and thunderstorms are forecast from early to mid week, with conditions drying out by the end of the week & beginning of next weekend. LMZ080-669-671-673-675-777-779-870-872-874-876-878-041515- 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- 248 AM CDT Sat May 4 2024 SHEBOYGAN WI TO PENTWATER MI SOUTH... .TODAY...East winds 10 to 20 kt becoming southeast. Waves 1 to 2 ft. .TONIGHT...South winds 10 to 15 kt veering to west 10 to 20 kt late in the evening, then becoming northwest after midnight increasing to 15 to 25 kt late. Chance of rain showers and thunderstorms in the evening, then slight chance of rain showers and thunderstorms overnight. Waves 1 to 3 ft building to 2 to 4 ft. .SUNDAY...Northwest winds 15 to 25 kt becoming north 10 to 20 kt. Waves 3 to 5 ft. .SUNDAY NIGHT...Northeast winds 10 to 20 kt diminishing to 5 to 10 kt overnight. Waves 2 to 4 ft subsiding to 1 to 3 ft. .MONDAY...East winds 10 to 15 kt increasing to 10 to 20 kt. Waves 2 to 4 ft. .MONDAY NIGHT...East winds 10 to 15 kt becoming southeast 10 to 20 kt. Waves 2 to 4 ft building to 3 to 5 ft. .TUESDAY...Southeast winds 15 to 25 kt becoming south. Showers with a chance of thunderstorms. Waves 4 to 6 ft occasionally to 8 ft. .WEDNESDAY...Southwest winds 10 to 20 kt becoming south. Waves 1 to 3 ft. $$