####018011925#### FZUS63 KMQT 280810 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 410 AM EDT Sun Apr 28 2024 For waters beyond 5 nautical miles of shore on Lake Superior. Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. .SYNOPSIS...As 30.5 inch high pressure builds over northern Ontario today, a 29.6 inch low pressure will lift northeast from Kansas to Iowa. This low will continue to track northeast, crossing western Lake Superior late Monday afternoon and evening. As the low weakens to 29.7 inches while moving over northern Ontario late Monday night, a weak 29.9 inch ridge will shift east across the Mississippi Valley. On Tuesday, the ridge will move toward the Appalachians as the next low pressure of 29.6 inches tracks from the Dakotas to northern Minnesota. This low will pass just north of Lake Superior on Wednesday. In its wake, a 29.9 inch ridge will shift east to the western Great Lakes for Wednesday evening. Overnight Wednesday through Thursday, a 29.4 inch Colorado Low will weaken to 29.6 inches as it lifts to the Upper Midwest. LSZ162-281615- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 410 AM EDT Sun Apr 28 2024 /310 AM CDT Sun Apr 28 2024/ ...GALE WARNING IN EFFECT FROM 2 PM EDT /1 PM CDT/ THIS AFTERNOON THROUGH MONDAY AFTERNOON... .EARLY THIS MORNING...Northeast winds 15 to 25 knots. Waves 1 to 3 feet building to 3 to 5 feet occasionally to 7 feet. .TODAY...Northeast winds 20 to 30 knots increasing to gales to 35 knots in the afternoon, then veering east late. A slight chance of rain showers by late afternoon. Waves building to 8 to 11 feet occasionally to 14 feet. .TONIGHT...East gales to 40 knots. A chance of rain showers through midnight, then rain showers after midnight. Waves building to 11 to 15 feet occasionally to 19 feet. .MONDAY...Northeast gales to 40 knots diminishing to 20 to 30 knots late. Rain showers. Waves subsiding to 6 to 9 feet occasionally to 11 feet. .MONDAY NIGHT...West winds 10 to 20 knots. A chance of rain showers through midnight. Waves subsiding to 1 to 3 feet. .TUESDAY...West winds 10 to 20 knots becoming southwest 5 to 15 knots by mid afternoon. Waves subsiding to calm to 2 feet. .TUESDAY NIGHT...East winds 10 to 20 knots becoming southwest 5 to 15 knots after midnight. Rain showers. Waves building to 1 to 3 feet, then subsiding to calm to 2 feet. .WEDNESDAY...Southwest winds 15 to 25 knots diminishing to 10 to 20 knots. Waves subsiding to calm to 2 feet. .THURSDAY...Northeast winds 10 to 20 knots becoming north 15 to 25 knots. A chance of showers. Waves building to 1 to 3 feet. $$ LSZ263-281615- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- 410 AM EDT Sun Apr 28 2024 ...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH MONDAY AFTERNOON... .EARLY THIS MORNING...Northeast winds 15 to 25 knots. Waves 3 to 6 feet occasionally to 8 feet. .TODAY...Northeast winds 15 to 25 knots increasing to 20 to 30 knots in the afternoon. Waves building to 7 to 10 feet occasionally to 13 feet. .TONIGHT...East gales to 40 knots. A chance of rain showers through midnight, then rain showers after midnight. Waves subsiding to 6 to 9 feet occasionally to 11 feet, then building to 10 to 14 feet occasionally to 18 feet. .MONDAY...East gales to 40 knots diminishing to 20 to 30 knots late. Rain showers. Waves subsiding to 7 to 10 feet occasionally to 13 feet. .MONDAY NIGHT...West winds 10 to 20 knots. A chance of rain showers through midnight. Waves subsiding to 2 to 4 feet. .TUESDAY...West winds 10 to 20 knots becoming southwest 5 to 15 knots by mid afternoon. Waves subsiding to calm to 2 feet. .TUESDAY NIGHT...East winds 5 to 15 knots becoming southwest 10 to 20 knots after midnight. Rain showers. Waves building to 3 to 5 feet occasionally to 7 feet. .WEDNESDAY...Southwest winds 15 to 25 knots diminishing to 10 to 20 knots. Waves subsiding to calm to 2 feet. .THURSDAY...Northeast winds 10 to 20 knots backing north. A chance of rain showers. Waves building to 1 to 3 feet. $$ LSZ264-281615- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 410 AM EDT Sun Apr 28 2024 ...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH MONDAY AFTERNOON... .EARLY THIS MORNING...North winds 15 to 25 knots. Waves 3 to 6 feet occasionally to 8 feet. .TODAY...Northeast winds 15 to 25 knots. Waves 3 to 6 feet occasionally to 8 feet. .TONIGHT...Northeast gales to 35 knots becoming east gales to 40 knots after midnight. A chance of rain showers. Waves building to 10 to 14 feet occasionally to 18 feet. .MONDAY...East gales to 40 knots diminishing to 20 to 30 knots late. Rain showers. Waves subsiding to 7 to 10 feet occasionally to 13 feet. .MONDAY NIGHT...East winds 15 to 25 knots becoming west 10 to 20 knots after midnight. A chance of rain showers through midnight. Waves subsiding to 3 to 5 feet occasionally to 7 feet. .TUESDAY...West winds 10 to 20 knots becoming southwest 5 to 15 knots by mid afternoon. Waves subsiding to 1 to 3 feet. .TUESDAY NIGHT...East winds 5 to 15 knots becoming southeast 10 to 20 knots after midnight. A chance of rain showers through midnight, then rain showers likely after midnight. Waves subsiding to calm to 2 feet, then building to 3 to 5 feet occasionally to 7 feet. .WEDNESDAY...Southwest winds 15 to 25 knots diminishing to 10 to 20 knots. Waves building to 3 to 6 feet occasionally to 8 feet, then subsiding to 1 to 3 feet. .THURSDAY...East winds 5 to 15 knots becoming north 10 to 20 knots. A chance of rain showers. Waves subsiding to calm to 2 feet, then building to 1 to 3 feet. $$ LSZ265-281615- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 410 AM EDT Sun Apr 28 2024 ...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH MONDAY AFTERNOON... .EARLY THIS MORNING...North winds 15 to 25 knots. Waves 3 to 6 feet occasionally to 8 feet. .TODAY...Northeast winds 15 to 25 knots. Waves subsiding to 3 to 5 feet occasionally to 7 feet. .TONIGHT...East winds 20 to 30 knots increasing to gales to 35 knots. A chance of rain showers through midnight, then rain showers after midnight. Waves building to 9 to 12 feet occasionally to 15 feet. .MONDAY...East gales to 35 knots diminishing to 15 to 25 knots. Rain showers through early afternoon, then a chance of rain showers by mid afternoon. Waves subsiding to 5 to 8 feet occasionally to 10 feet. .MONDAY NIGHT...Southeast winds 10 to 20 knots veering west after midnight. A chance of rain showers through midnight. Waves subsiding to 2 to 4 feet. .TUESDAY...West winds 10 to 20 knots becoming east 5 to 15 knots by mid afternoon. Waves subsiding to calm to 2 feet. .TUESDAY NIGHT...East winds 10 to 20 knots veering south after midnight. A chance of rain showers through midnight, then rain showers likely after midnight. Waves building to 1 to 3 feet. .WEDNESDAY...West winds 15 to 25 knots becoming southwest 10 to 20 knots. Waves subsiding to calm to 2 feet. .THURSDAY...Northeast winds 10 to 20 knots backing north. A chance of rain showers. Waves calm to 2 feet. $$ LSZ266-281615- Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore- 410 AM EDT Sun Apr 28 2024 ...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH MONDAY AFTERNOON... .EARLY THIS MORNING...North winds 20 to 30 knots. Waves 3 to 6 feet occasionally to 8 feet. .TODAY...Northeast winds 15 to 25 knots. Waves building to 4 to 7 feet occasionally to 9 feet, then subsiding to 3 to 5 feet occasionally to 7 feet. .TONIGHT...East winds 20 to 30 knots increasing to gales to 35 knots. A chance of rain showers. Waves building to 9 to 12 feet occasionally to 15 feet. .MONDAY...East gales to 40 knots diminishing to 20 to 30 knots late. Rain showers through early afternoon, then a chance of rain showers by mid afternoon. Waves subsiding to 6 to 9 feet occasionally to 11 feet. .MONDAY NIGHT...Southeast winds 20 to 30 knots becoming west 10 to 20 knots after midnight. A chance of rain showers. Waves subsiding to 3 to 5 feet occasionally to 7 feet. .TUESDAY...West winds 10 to 20 knots diminishing to 5 to 15 knots by mid afternoon. Waves subsiding to 1 to 3 feet. .TUESDAY NIGHT...Southeast winds 10 to 20 knots. Rain showers likely after midnight. Waves subsiding to calm to 2 feet, then building to 3 to 5 feet occasionally to 7 feet. .WEDNESDAY...Southwest winds 15 to 25 knots becoming south 10 to 20 knots. Waves building to 3 to 6 feet occasionally to 8 feet, then subsiding to 1 to 3 feet. .THURSDAY...Northeast winds 10 to 20 knots backing north. A chance of rain showers. Waves subsiding to calm to 2 feet, then building to 1 to 3 feet. $$ LSZ267-281615- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 410 AM EDT Sun Apr 28 2024 .EARLY THIS MORNING...North winds 10 to 20 knots. Waves 3 to 6 feet occasionally to 8 feet. .TODAY...Northeast winds 10 to 20 knots increasing to 15 to 25 knots late. Waves subsiding to 3 to 5 feet occasionally to 7 feet. .TONIGHT...East winds 15 to 25 knots increasing to 30 knots with a few gale force gusts to 35 knots possible. A chance of rain showers through midnight, then rain showers likely after midnight. Waves building to 4 to 7 feet occasionally to 9 feet. .MONDAY...East winds to 30 knots with a few gale force gusts to 35 knots possible becoming southeast 20 to 30 knots late. Rain showers. Waves building to 6 to 9 feet occasionally to 11 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. .MONDAY NIGHT...Southeast winds 15 to 25 knots becoming southwest 10 to 20 knots after midnight. A chance of rain showers. Waves subsiding to 1 to 3 feet. .TUESDAY...West winds 10 to 20 knots diminishing to 5 to 15 knots by mid afternoon. Waves building to 2 to 4 feet, then subsiding to calm to 2 feet. .TUESDAY NIGHT...Southeast winds 10 to 20 knots. A chance of rain showers after midnight. Waves building to 2 to 4 feet. .WEDNESDAY...Southwest winds 15 to 25 knots becoming south 10 to 20 knots. A chance of showers. Waves subsiding to calm to 2 feet. .THURSDAY...East winds 10 to 20 knots backing northeast. A chance of rain showers. Waves calm to 2 feet. $$ LSZ261-281615- MAFOR 2809/ Superior West...GALE WARNING IN EFFECT...12130 12140 11150 12250 11256. Waves 2 to 4 feet building to 5 to 9 feet today and to 10 to 14 feet tonight. Superior North Central...GALE WARNING IN EFFECT...14130 11130 11140 12250. A chance of rain showers overnight. Waves 3 to 6 feet today building to 8 to 11 feet tonight. Superior South Central...GALE WARNING IN EFFECT...11830 14130 11140 11250 11256. Waves 3 to 7 feet today building to 6 to 10 feet tonight. Superior East 11820 13130 12140 12240. A chance of rain showers overnight. Waves 3 to 6 feet today building to 5 to 8 feet tonight. $$ Rolfson Experimental modernized open lake forecast is available online at weather.gov/mqt/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes ####018006791#### FZUS63 KMKX 280810 GLFLM OPEN LAKE FORECAST for Lake Michigan National Weather Service Milwaukee/Sullivan WI 310 AM CDT Sun Apr 28 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... Low pressure around 29.7 inches drifts northeastward through Quebec early this morning. Its cold front has already crossed two thirds of the lake, and will stall near the southern end of the lake today as the warm front of an approaching low pressure system collides with it. Thus, north to northeast winds are expected across the majority of Lake Michigan today, with the fastest winds (up to 30 kts) in central Lake Michigan. Expecting light and variable winds over the southern third of the lake (near the stalled front) and south winds at the far southern tip of the lake. Modest east to southeast winds will then develop over all of the lake tonight as the stalled front moves north as a warm front. Brisk east winds, possibly reaching gale force, are expected over the northern tip of the lake late tonight into Monday morning. Breezy south winds will develop over the remainder of the lake on Monday. Areas of fog may form over the lake today, especially the southern half. Several rounds of showers and thunderstorms are expected between now and Monday. LMZ261-362-364-366-563-565-567-868-281530- 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- 310 AM CDT Sun Apr 28 2024 SHEBOYGAN WI TO PENTWATER MI NORTH... .TODAY...North winds 15 to 25 kt becoming northeast. Patchy fog this morning. Chance of rain showers this morning, then rain showers and slight chance of thunderstorms this afternoon. Waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft. .TONIGHT...Northeast winds 15 to 25 kt becoming east to 30 kt, with gales to 40 kt possible over the far northern tip of the lake. Rain showers and slight chance of thunderstorms in the evening, then rain showers with a chance of thunderstorms overnight. Waves 3 to 5 ft building to 5 to 8 ft occasionally to 10 ft. .MONDAY...Southeast winds to 30 kts, with gales to 40 kt possible near the far northern tip of the lake. Diminishing to 30 kt early in the afternoon, becoming south 15 to 25 kt late. Rain showers in the morning, then chance of rain showers in the afternoon. Waves 7 to 10 ft occasionally to 13 ft subsiding to 4 to 6 ft occasionally to 8 ft. .MONDAY NIGHT...Southwest winds 10 to 20 kt diminishing to 10 to 15 kt. Waves 3 to 5 ft subsiding to 2 to 4 ft. .TUESDAY...Southwest winds 10 to 20 kt. Waves 1 to 3 ft. .TUESDAY NIGHT...South winds 10 to 15 kt increasing to 10 to 20 kt. Waves 1 to 3 ft. .WEDNESDAY...Southwest winds 10 to 20 kt. Waves 1 to 3 ft. .THURSDAY...Southeast winds 10 to 20 kt. Chance of rain showers. Waves 1 to 3 ft. $$ LMZ080-669-671-673-675-777-779-870-872-874-876-878-281530- 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- 310 AM CDT Sun Apr 28 2024 SHEBOYGAN WI TO PENTWATER MI SOUTH... .TODAY...Southeast winds 15 to 25 kt. Areas of dense fog this morning. Rain showers likely with a chance of thunderstorms this morning, then chance of rain showers and slight chance of thunderstorms this afternoon. Waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft. .TONIGHT...South winds 10 to 20 kt becoming southeast. Chance of rain showers and thunderstorms in the evening, then rain showers with a chance of thunderstorms overnight. Waves 3 to 5 ft subsiding to 2 to 4 ft. .MONDAY...South winds 10 to 20 kt increasing to 15 to 25 kt. Chance of showers and thunderstorms in the morning, then chance of showers in the afternoon. Waves 4 to 6 ft occasionally to 8 ft. .MONDAY NIGHT...Southwest winds 10 to 20 kt becoming west 10 to 15 kt. Chance of showers in the evening. Waves 3 to 5 ft subsiding to 2 to 4 ft. .TUESDAY...West winds 10 to 15 kt becoming south 10 to 20 kt. Waves 1 to 3 ft. .TUESDAY NIGHT...Southeast winds 10 to 15 kt becoming south 10 to 20 kt. Waves 1 to 3 ft. .WEDNESDAY...Southwest winds 10 to 20 kt becoming south. Waves 2 to 4 ft. .THURSDAY...Southeast winds 10 to 20 kt becoming south. Chance of showers. Waves 1 to 3 ft. $$ LMZ761-281530- MAFOR 2810/ MICHIGAN NORTH 12830 13136 11236 11246 11246. A chance of thunderstorms overnight. Waves 1 to 3 feet building to 3 to 6 feet today. Waves 3 to 5 feet building to 4 to 7 feet tonight. MICHIGAN SOUTH 11536 19534 11236 19234 12230 11420 11210 11310 11326. A chance of thunderstorms this morning and tonight. Waves 1 to 3 feet building to 3 to 6 feet today. Waves 3 to 5 feet subsiding to 1 to 3 feet tonight. $$ Sheppard Experimental modernized open lake forecast is available online at weather.gov/mkx/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes ####018003483#### FZUS61 KBUF 280813 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 413 AM EDT Sun Apr 28 2024 For waters beyond five nautical miles of shore on Lake Ontario Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. .SYNOPSIS...A 29.6 inch low will track from the central Plains today to Lake Superior by Monday evening, and then to Ontario Province on Tuesday. A cold front trailing from the low will cross the lake on Tuesday, with a 29.9 inch bubble of high pressure then forecast to slide across the lake Tuesday night and Wednesday. A 29.6 inch low will then develop across the central Plains on Thursday. LOZ062-281515- Lake Ontario open waters from the Niagara River to Hamlin Beach- 413 AM EDT Sun Apr 28 2024 .TODAY...Southwest winds 10 to 15 knots. A chance of showers late this morning. Showers likely with a chance of thunderstorms early this afternoon, then a chance of showers late. Patchy fog this afternoon. Waves 1 to 3 feet. .TONIGHT...West winds 10 knots or less becoming east and increasing to 15 to 20 knots after midnight. Patchy fog through the early overnight. Showers likely early, then a chance of showers from late evening on. Waves 1 to 3 feet. .MONDAY...East winds 15 to 20 knots. A chance of showers in the morning. Waves 2 to 4 feet building to 3 to 5 feet. .MONDAY NIGHT...East winds 15 to 20 knots diminishing to 5 to 10 knots. A chance of showers in the evening, then showers likely overnight. Waves 3 to 5 feet subsiding to 1 to 2 feet. .TUESDAY...East winds 10 knots or less becoming west. Showers likely during the day, then a chance of showers Tuesday night. Waves 2 feet or less. .WEDNESDAY...Southwest winds 10 knots or less becoming southeast. Waves 1 foot or less. .THURSDAY...East winds 5 to 10 knots becoming south. A chance of showers Thursday night. Waves 1 foot or less. Winds and waves higher in and near thunderstorms. $$ LOZ063>065-281515- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 413 AM EDT Sun Apr 28 2024 .TODAY...South winds 15 to 20 knots becoming west 5 to 15 knots. A chance of showers from late morning on. Patchy fog late. Waves 1 to 3 feet. .TONIGHT...West winds 5 to 15 knots becoming northeast 15 to 20 knots. Patchy fog through the early overnight. A chance of showers. Waves 1 to 2 feet building to 2 to 4 feet. .MONDAY...Northeast winds 15 to 20 knots. A chance of showers in the morning. Waves 2 to 4 feet. .MONDAY NIGHT...Northeast winds 5 to 15 knots becoming east. A chance of showers. Waves 1 to 3 feet. .TUESDAY...East winds 10 knots or less becoming northwest. Showers likely. Waves 1 foot or less. .WEDNESDAY...West winds 5 to 10 knots becoming south. Waves 1 foot or less. .THURSDAY...South winds 5 to 10 knots. A chance of showers Thursday night. Waves 1 foot or less. Winds and waves higher in and near thunderstorms. $$ LOZ061-281515- MAFOR 2809/ ONTARIO WEST 1/2 14510 11600 11700 11100 11110. A chance of showers. Waves 1 to 3 feet. ONTARIO EAST 1/2 11420 11410 11500 12600 11700 11810 11110. A chance of showers this afternoon and tonight. Waves 2 to 4 feet subsiding to 1 to 3 feet today. Waves 1 to 3 feet tonight. $$