Expires:202406132145;;944804 FZUS63 KMQT 131342 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 942 AM EDT Thu Jun 13 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...A 29.6 inch trough over Lake Superior this morning gives way to ridging the rest of today through Friday, with the ridging building to 30.1 inches over the lake by Friday afternoon. This high pressure continues building to 30.2 inches as it moves over the central Great Lakes Saturday, and continues shifting east toward New England on Sunday. Deepening low pressure near 29.4 inches emerges out of the High Plains Saturday night, moving northeast towards Hudson Bay Sunday into Monday as it deepens to 29.0 inches. This low extends a 29.6 inch trough over Lake Superior Sunday night before weak ridging of 29.9 inches moves over Lake Superior from the Northern Plains Monday. A low pressure of at least 29.5 inches looks to move off the Colorado Rockies into the Northern Plains early next week. LSZ264-132145- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 942 AM EDT Thu Jun 13 2024 .REST OF TODAY...West winds 5 to 15 knots increasing to 10 to 20 knots in the afternoon, then diminishing to 5 to 15 knots late. Patchy fog. A slight chance of showers and thunderstorms. Waves calm to 2 feet building to 1 to 3 feet, then subsiding to calm to 2 feet. .TONIGHT...West winds 5 to 15 knots veering north late. Waves calm to 2 feet. .FRIDAY...North winds 5 to 15 knots veering south late. Waves calm to 2 feet. .FRIDAY NIGHT...South winds less than 10 knots increasing to 5 to 15 knots after midnight. Waves calm to 2 feet. .SATURDAY...South winds 5 to 15 knots backing southeast by mid afternoon. Waves calm to 2 feet. .SATURDAY NIGHT...Southeast winds 10 to 20 knots. A chance of showers. Waves building to 2 to 4 feet. .SUNDAY...Southeast winds 10 to 20 knots becoming southwest 5 to 15 knots. A chance of showers. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to calm to 2 feet. .MONDAY...Southwest winds 5 to 15 knots backing east. A chance of showers. Waves calm to 2 feet. $$