####018008003#### FZUS63 KMKX 151934 GLFLM OPEN LAKE FORECAST for Lake Michigan National Weather Service Milwaukee/Sullivan WI 234 PM CDT Mon Apr 15 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 and variable winds will become east to northeast over all of the open lake by late afternoon. Easterly winds will then develop and increase late tonight into Tuesday morning over the south half of the lake as low pressure of 29.2 inches approaches from the Central Plains. Brisk easterly winds are expected by Tuesday evening with a potential for gales over much of the lake into Wednesday. A Gale Watch is now in effect for this period. The low will slowly move across central Wisconsin on Wednesday reaching northern or central Lake Michigan Wednesday evening with a central pressure around 29.5 inches. The brisk southeast winds over the southern half of the lake will shift southwesterly Wednesday afternoon, while brisk and possible easterly gales will continue across the far northern portion of the lake. The winds will finally turn westerly but much weaker for late Wednesday night over the far north. Light to modest westerly winds Thursday morning will then turn southwest for the afternoon across the entire lake. LMZ080-669-671-673-675-777-779-870-872-874-876-878-160315- 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- 234 PM CDT Mon Apr 15 2024 SHEBOYGAN WI TO PENTWATER MI SOUTH... ...GALE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... .TONIGHT...Northeast winds 10 to 15 kt becoming east 10 to 20 kt. Waves 1 to 3 ft. .TUESDAY...East winds 10 to 20 kt increasing to 30 kt. Chance of rain showers in the afternoon. Waves 2 to 4 ft building to 4 to 7 ft occasionally to 9 ft. .TUESDAY NIGHT...East gales to 40 kt becoming southeast gales to 35 kt. Rain showers with a chance of thunderstorms. Waves 6 to 9 ft occasionally to 12 ft building to 10 to 14 ft occasionally to 18 ft. .WEDNESDAY...Southeast winds to 30 kt becoming south 15 to 25 kt. Showers with a chance of thunderstorms. Waves 7 to 10 ft occasionally to 13 ft subsiding to 5 to 8 ft occasionally to 10 ft. .WEDNESDAY NIGHT...West winds 10 to 20 kt increasing to 15 to 25 kt. Chance of showers in the evening. Waves 4 to 6 ft occasionally to 8 ft. .THURSDAY...West winds 10 to 20 kt becoming southwest 10 to 15 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft. .THURSDAY NIGHT...West winds 10 to 20 kt. Chance of rain showers. Waves 1 to 3 ft. .FRIDAY...Northwest winds 15 to 25 kt becoming west. Waves 1 to 3 ft. .SATURDAY...Northwest winds 10 to 20 kt. Waves 3 to 5 ft. $$ LMZ364-366-563-565-567-868-160315- Lake Michigan from Charlevoix to Point Betsie MI 5 NM offshore to Mid Lake- Lake Michigan from Point Betsie to Manistee MI 5 NM offshore to Mid Lake- Lake Michigan from Rock Island Passage to Sturgeon Bay WI- Lake Michigan from Sturgeon Bay to Two Rivers WI 5 NM offshore to Mid Lake- Lake Michigan from Two Rivers to Sheboygan WI 5 NM offshore to Mid Lake- Lake Michigan from Pentwater to Manistee MI 5 NM offshore to Mid Lake- 234 PM CDT Mon Apr 15 2024 ROCK ISLAND PASSAGE TO CHARLEVOIX MI SOUTH TO SHEBOYGAN WI TO PENTWATER MI... ...GALE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... .TONIGHT...Northeast winds 10 to 15 kt. Waves 1 to 2 ft. .TUESDAY...East winds 10 to 15 kt increasing to 15 to 25 kt. Waves 3 to 5 ft. .TUESDAY NIGHT...East winds to 30 kt increasing to gales to 40 kt late in the evening, then becoming east gales to 40 kt after midnight becoming southeast gales to 35 kt late. Rain showers likely in the evening, then rain showers overnight. Waves 4 to 7 ft occasionally to 9 ft building to 8 to 12 ft occasionally to 16 ft. .WEDNESDAY...Southeast gales to 35 kt diminishing to 30 kt. Rain showers in the morning, then rain showers with a chance of thunderstorms in the afternoon. Waves 7 to 10 ft occasionally to 13 ft subsiding to 5 to 8 ft occasionally to 10 ft. .WEDNESDAY NIGHT...South winds 10 to 20 kt veering to west. Rain showers in the evening. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft. .THURSDAY...West winds 10 to 20 kt becoming southwest. Waves 3 to 5 ft. .THURSDAY NIGHT...Southwest winds 10 to 20 kt becoming west. Chance of rain showers. Waves 1 to 3 ft. .FRIDAY...West winds 15 to 25 kt. Waves 1 to 3 ft. .SATURDAY...Northwest winds 15 to 25 kt becoming west 10 to 20 kt. Waves 2 to 4 ft. $$ LMZ261-362-160315- 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- 234 PM CDT Mon Apr 15 2024 ROCK ISLAND PASSAGE TO CHARLEVOIX MI NORTH... ...GALE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY EVENING... .TONIGHT...North winds 10 to 15 kt diminishing to 5 to 10 kt late this evening, then becoming north 5 to 10 kt after midnight becoming northeast late. Waves 1 to 2 ft subsiding to nearly calm. .TUESDAY...Northeast winds 5 to 10 kt becoming east 15 to 25 kt. Waves 1 to 2 ft building to 2 to 4 ft. .TUESDAY NIGHT...East winds to 30 kt increasing to gales to 40 kt. Chance of rain showers in the evening, then rain showers overnight. Waves 4 to 6 ft occasionally to 8 ft building to 7 to 10 ft occasionally to 13 ft. .WEDNESDAY...East gales to 40 kt. Rain showers. Waves 8 to 11 ft occasionally to 14 ft. .WEDNESDAY NIGHT...East gales to 40 kt backing to northwest 15 to 25 kt overnight. Rain showers in the evening, then chance of rain showers overnight. Waves 5 to 8 ft occasionally to 10 ft subsiding to 3 to 5 ft. .THURSDAY...West winds 10 to 20 kt becoming southwest. Waves 2 to 4 ft. .THURSDAY NIGHT...Southwest winds 10 to 20 kt becoming west. Chance of rain showers. Waves 1 to 3 ft. .FRIDAY...West winds 10 to 20 kt increasing to 15 to 25 kt. Waves 1 to 3 ft. .SATURDAY...Northwest winds 15 to 25 kt. Waves 1 to 3 ft. $$ LMZ761-160315- MAFOR 1522/ MICHIGAN NORTH 14110 11110 11220 11120 11230. Waves 2 feet or less tonight. Waves 1 to 3 feet building to 2 to 4 feet Tuesday. MICHIGAN SOUTH 13110 12220 12230 11240. A chance of showers Tuesday afternoon. Waves 1 to 3 feet tonight. Waves 1 to 3 feet building to 3 to 6 feet Tuesday. $$ Gehring Experimental modernized open lake forecast is available online at weather.gov/mkx/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes