Expires:202511160900;;471033 FZUS63 KMQT 152115 CCA GLFLS Open Lake Forecast for Lake Superior...CORRECTED National Weather Service Marquette MI 415 PM EST Sat Nov 15 2025 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 29.3 inch trough is placed just north of Lake Huron this afternoon. The trough exits into eastern Ontario this evening and develops into a 29.1 inch low over New England by Sunday morning, further deepening to 28.8 inches over the Canadian Maritimes Sunday night into Monday. Troughing gradually weakens to 29.9 inches over Lake Superior through Sunday night as this occurs. Meanwhile, 30.1 inch high pressure extending from Saskatchewan to the Dakotas this weekend builds to 30.3 inches as it shifts east to the Great Lakes by Tuesday night. High pressure persists at around 30.2 inches over the lake through late next week as the high shifts east to New England by Thursday night. LSZ162-160900- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 415 PM EST Sat Nov 15 2025 /315 PM CST Sat Nov 15 2025/ .LATE THIS AFTERNOON...Northwest winds 20 to 30 knots. Waves 3 to 6 feet occasionally to 8 feet. .TONIGHT...Northwest winds to 30 knots with a few gale force gusts to 35 knots possible diminishing to 20 to 30 knots late. Waves building to 4 to 7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. .SUNDAY...Northwest winds 20 to 30 knots. Waves subsiding to 2 to 4 feet. .SUNDAY NIGHT...Northwest winds 10 to 20 knots diminishing to 5 to 15 knots late. Waves subsiding to calm to 2 feet. .MONDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet. .MONDAY NIGHT...Northeast winds 5 to 15 knots. Waves calm to 2 feet. .TUESDAY...East winds 5 to 15 knots. Waves calm to 2 feet. .TUESDAY NIGHT...East winds 5 to 15 knots veering southeast after midnight. Waves calm to 2 feet. .WEDNESDAY...South winds 5 to 15 knots veering southwest. Waves calm to 2 feet. .THURSDAY...Southwest winds 5 to 15 knots becoming north 10 to 20 knots. A chance of rain showers. Waves calm to 2 feet. $$