FZUS63 KMQT 031501 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 1001 AM EST Fri Feb 3 2023 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 30.7 inch high gradually shifts east from the Dakotas and moves across the Upper Midwest today. This east- southeast propagation continues through Saturday morning over the Great Lakes, weakening to 30.6 inches ahead of a 29.8 inch trough moving east through the Upper Great Lakes region Sunday. A very brief ridge tries to build in Sunday night into early Monday, however a low over Saskatchewan is expected to quickly follow behind it later on Monday. This low is expected to track across the Upper Great Lakes at 29.4 inches through Tuesday. LSZ162-032315- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 1001 AM EST Fri Feb 3 2023 /901 AM CST Fri Feb 3 2023/ .REST OF TODAY...Northwest winds 10 to 20 knots becoming west 5 to 15 knots by late morning, then becoming southwest 10 to 20 knots by mid afternoon. A slight chance of snow showers. Waves 1 to 3 feet subsiding to calm to 2 feet, then building to 1 to 3 feet. .TONIGHT...Southwest winds 15 to 25 knots increasing to 20 to 30 knots by midnight. A chance of snow showers. Heavy freezing spray after midnight. Waves building to 4 to 8 feet occasionally to 10 feet. .SATURDAY...Southwest winds 15 to 25 knots diminishing to 10 to 20 knots by mid afternoon. Heavy freezing spray in the morning. Waves subsiding to 1 to 3 feet. .SATURDAY NIGHT...Southwest winds 10 to 20 knots veering west after midnight. Waves subsiding to calm to 2 feet. .SUNDAY...Northwest winds 10 to 20 knots. Waves calm to 2 feet. .SUNDAY NIGHT...Northwest winds 5 to 15 knots backing southwest after midnight. Waves calm to 2 feet. .MONDAY...South winds 10 to 20 knots becoming west 15 to 25 knots. A chance of rain and snow showers. Waves building to 1 to 3 feet. .TUESDAY...West winds 20 to 30 knots diminishing to 15 to 25 knots. Waves building to 2 to 4 feet, then subsiding to 1 to 3 feet. $$ LSZ263-032315- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- 1001 AM EST Fri Feb 3 2023 .REST OF TODAY...Northwest winds 15 to 25 knots diminishing to 10 to 20 knots by late morning, then backing southwest by mid afternoon. A slight chance of snow showers. Waves 2 to 4 feet subsiding to calm to 2 feet. .TONIGHT...Southwest winds 15 to 25 knots increasing to 30 knots with a few gale force gusts to 35 knots possible. A chance of snow showers. Heavy freezing spray after midnight. Waves building to 5 to 8 feet occasionally to 10 feet. .SATURDAY...Southwest winds 20 to 30 knots diminishing to 10 to 20 knots. Heavy freezing spray. A slight chance of snow showers. Waves subsiding to 2 to 4 feet. .SATURDAY NIGHT...Southwest winds 10 to 20 knots veering west after midnight. Waves subsiding to calm to 2 feet. .SUNDAY...North winds 10 to 20 knots backing northwest in the afternoon. Waves building to 1 to 3 feet. .SUNDAY NIGHT...Northwest winds 5 to 15 knots backing south after midnight. Waves subsiding to calm to 2 feet. .MONDAY...South winds 15 to 25 knots. A chance of snow showers. Waves building to 2 to 4 feet. .TUESDAY...West winds 20 to 30 knots diminishing to 15 to 25 knots. Waves building to 3 to 6 feet occasionally to 8 feet. $$ LSZ264-032315- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 1001 AM EST Fri Feb 3 2023 .REST OF TODAY...Northwest winds 15 to 25 knots diminishing to 10 to 20 knots by late morning, then becoming west 5 to 15 knots by mid afternoon. Heavy freezing spray late in the morning. Patchy fog. A chance of snow showers. Waves 3 to 6 feet occasionally to 8 feet subsiding to calm to 2 feet. .TONIGHT...Southwest winds 15 to 25 knots increasing to 20 to 30 knots by midnight. A slight chance of snow showers in the evening, then snow showers likely after midnight. Heavy freezing spray after midnight. Waves building to 5 to 8 feet occasionally to 10 feet. .SATURDAY...Southwest winds 20 to 30 knots diminishing to 10 to 20 knots. Freezing spray. A chance of snow showers. Waves subsiding to 3 to 5 feet occasionally to 7 feet. .SATURDAY NIGHT...West winds 5 to 15 knots veering northwest after midnight. Waves subsiding to calm to 2 feet, then building to 1 to 3 feet. .SUNDAY...North winds 5 to 15 knots backing northwest in the afternoon. Waves 1 to 3 feet. .SUNDAY NIGHT...Northwest winds 5 to 15 knots backing south after midnight. Waves subsiding to calm to 2 feet. .MONDAY...South winds 20 to 30 knots. A chance of rain and snow showers. Waves building to 4 to 7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. .TUESDAY...West winds 20 to 30 knots diminishing to 15 to 25 knots. Waves subsiding to 3 to 5 feet occasionally to 7 feet. $$ LSZ265-032315- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 1001 AM EST Fri Feb 3 2023 .REST OF TODAY...Northwest winds 20 to 30 knots diminishing to 15 to 25 knots by late morning, then becoming west 10 to 20 knots by mid afternoon. Heavy freezing spray and patchy fog late in the morning. A chance of snow showers. Waves 4 to 7 feet occasionally to 9 feet subsiding to calm to 2 feet. .TONIGHT...Southwest winds 10 to 20 knots becoming south 15 to 25 knots by midnight, then becoming southwest 20 to 30 knots late. A chance of snow showers. Waves building to 3 to 5 feet occasionally to 7 feet. .SATURDAY...Southwest winds 20 to 30 knots diminishing to 5 to 15 knots. Waves subsiding to calm to 2 feet. .SATURDAY NIGHT...Southwest winds 5 to 15 knots becoming west 10 to 20 knots after midnight. Waves calm to 2 feet. .SUNDAY...Northwest winds 10 to 20 knots. Waves calm to 2 feet. .SUNDAY NIGHT...Northwest winds 5 to 15 knots backing southwest after midnight. Waves calm to 2 feet. .MONDAY...South winds 15 to 25 knots increasing to 20 to 30 knots. Rain showers, possibly mixed with snow. Waves building to 3 to 6 feet occasionally to 8 feet, then subsiding to 2 to 4 feet. .TUESDAY...West winds 20 to 30 knots. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to 1 to 3 feet. $$ LSZ266-032315- 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- 1001 AM EST Fri Feb 3 2023 .REST OF TODAY...Northwest winds to 30 knots with a few gale force gusts to 35 knots possible diminishing to 15 to 25 knots by late morning, then becoming west 10 to 20 knots by mid afternoon. Patchy fog late in the morning. Heavy freezing spray. A chance of snow showers. Waves 7 to 10 feet occasionally to 13 feet subsiding to 3 to 5 feet occasionally to 7 feet. .TONIGHT...Southwest winds 15 to 25 knots becoming south 20 to 30 knots by midnight, then increasing to 30 knots with a few gale force gusts to 35 knots possible late. A slight chance of snow showers in the evening, then snow showers likely after midnight. Heavy freezing spray after midnight. Waves subsiding to 2 to 4 feet, then building to 6 to 9 feet occasionally to 11 feet. .SATURDAY...Southwest winds 20 to 30 knots diminishing to 10 to 20 knots. Heavy freezing spray in the morning. A slight chance of snow showers. Waves subsiding to 3 to 5 feet occasionally to 7 feet. .SATURDAY NIGHT...Southwest winds 10 to 20 knots veering west after midnight. A slight chance of snow showers. Waves subsiding to calm to 2 feet. .SUNDAY...Northwest winds 10 to 20 knots increasing to 15 to 25 knots in the afternoon. A slight chance of snow showers in the morning. Waves building to 2 to 4 feet. .SUNDAY NIGHT...Northwest winds 10 to 20 knots diminishing to 5 to 15 knots after midnight. Waves subsiding to calm to 2 feet. .MONDAY...South winds 20 to 30 knots. Rain showers, possibly mixed with snow. Waves building to 5 to 8 feet occasionally to 10 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. .TUESDAY...West winds 20 to 30 knots. A chance of rain and snow showers. Waves building to 5 to 8 feet occasionally to 10 feet, then subsiding to 3 to 5 feet occasionally to 7 feet. $$ LSZ267-032315- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 1001 AM EST Fri Feb 3 2023 .REST OF TODAY...North winds to 30 knots with a few gale force gusts to 35 knots possible diminishing to 20 to 30 knots by late morning, then becoming northwest 15 to 25 knots by mid afternoon. Heavy freezing spray. Snow showers likely late in the morning. A chance of snow showers in the afternoon. Waves 7 to 10 feet occasionally to 13 feet subsiding to 3 to 5 feet occasionally to 7 feet. .TONIGHT...West winds 10 to 20 knots becoming southwest 20 to 30 knots by midnight, then backing south late. A chance of snow showers. Heavy freezing spray after midnight. Waves subsiding to 2 to 4 feet, then building to 5 to 8 feet occasionally to 10 feet. .SATURDAY...Southwest winds to 30 knots with a few gale force gusts to 35 knots possible diminishing to 15 to 25 knots. Heavy freezing spray in the morning. A chance of snow showers. Waves subsiding to 2 to 4 feet. .SATURDAY NIGHT...Southwest winds 10 to 20 knots. A slight chance of snow showers. Waves subsiding to calm to 2 feet. .SUNDAY...Northwest winds 10 to 20 knots increasing to 15 to 25 knots in the afternoon. Waves building to 3 to 5 feet occasionally to 7 feet. .SUNDAY NIGHT...Northwest winds 15 to 25 knots becoming north 10 to 20 knots after midnight. Waves subsiding to 1 to 3 feet. .MONDAY...South winds 15 to 25 knots increasing to gales to 35 knots. Rain showers, possibly mixed with snow. Waves building to 4 to 7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. .TUESDAY...West winds 20 to 30 knots. A chance of rain showers. Waves subsiding to 3 to 5 feet occasionally to 7 feet, then building to 6 to 9 feet occasionally to 11 feet. $$ LSZ261-032315- MAFOR 0316/ Superior West 11610 11620 11520 11530 14542. A chance of snow showers this evening. Waves 1 to 3 feet this afternoon. Waves 1 to 3 feet building to 4 to 7 feet tonight. Waves 4 to 7 feet subsiding to 3 to 6 feet Saturday morning. Superior North Central 11720 11710 11610 11530 11540 12547 11540. Waves 3 to 5 feet subsiding to 1 to 3 feet this afternoon. Waves 1 to 2 feet building to 5 to 8 feet tonight. Waves 5 to 8 feet Saturday morning. Superior South Central 11732 11620 11610 11520 11440 11442 11542 11530. A chance of snow showers this afternoon and overnight. Waves 4 to 7 feet subsiding to 3 to 6 feet this afternoon. Waves 1 to 3 feet building to 3 to 6 feet tonight. Waves 3 to 6 feet Saturday morning. Superior East 12732 11720 11620 11542 11457 11557 11542. Waves 5 to 8 feet this afternoon. Waves 3 to 5 feet building to 6 to 9 feet tonight. Waves 6 to 9 feet Saturday morning. $$ LC Experimental modernized open lake forecast is available online at weather.gov/mqt/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes