Great Lakes Forecast
Issued by NWS
Issued by NWS
507 FZUS63 KMQT 220915 CCA GLFLS Open Lake Forecast for Lake Superior...CORRECTED National Weather Service Marquette MI 415 AM EST Thu Jan 22 2026 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 low moves east through Ontario and into Quebec this morning. In the wake of the low, a 31.0 inch high pressure will be over Saskatchewan, shifting over the Dakotas Friday and overspreading the Upper Midwest at around 30.7 inches Saturday. Remnant ridging of at least 30.3 inches remains over Lake Superior through Sunday. A 29.8 inch trough will approach the lake on Monday afternoon, eventually moving through Monday night as the high pressure slides south and east, away from the area. LSZ162-222100- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 415 AM EST Thu Jan 22 2026 /315 AM CST Thu Jan 22 2026/ ...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH FRIDAY AFTERNOON... .EARLY THIS MORNING...Northwest winds 15 to 25 knots. Heavy freezing spray. Waves 4 to 7 feet occasionally to 9 feet. .TODAY...Northwest winds 15 to 25 knots increasing to 30 knots with a few gale force gusts to 35 knots possible by mid afternoon. Scattered snow showers. Heavy freezing spray in the afternoon. Waves subsiding to 3 to 5 feet occasionally to 7 feet, then building to 7 to 10 feet occasionally to 13 feet. .TONIGHT...Northwest winds to 30 knots with a few gale force gusts to 35 knots possible diminishing to 20 to 30 knots by midnight. Heavy freezing spray. Scattered snow showers. Waves subsiding to 4 to 7 feet occasionally to 9 feet. .FRIDAY...Northwest winds 15 to 25 knots. Heavy freezing spray in the morning. Scattered snow showers. Waves subsiding to 1 to 3 feet. .FRIDAY NIGHT...Northwest winds 10 to 20 knots diminishing to 5 to 15 knots after midnight. Scattered snow showers. Waves subsiding to calm to 2 feet. .SATURDAY...West winds 5 to 15 knots becoming southwest 10 to 20 knots in the afternoon. Scattered snow showers. Waves calm to 2 feet. .SATURDAY NIGHT...West winds 5 to 15 knots. A chance of snow showers. Waves calm to 2 feet. .SUNDAY...Northwest winds 5 to 15 knots increasing to 10 to 20 knots. Waves calm to 2 feet. .MONDAY...West winds 15 to 25 knots. Waves building to 2 to 4 feet, then subsiding to 1 to 3 feet. Note, wave height forecasts are for ice free areas. $$ LSZ263-222100- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- 415 AM EST Thu Jan 22 2026 ...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH FRIDAY EVENING... .EARLY THIS MORNING...Northwest winds 20 to 30 knots. Heavy freezing spray. Scattered snow showers. Waves 6 to 9 feet occasionally to 11 feet. .TODAY...Northwest winds 20 to 30 knots diminishing to 15 to 25 knots by late morning, then increasing to 20 to 30 knots by mid afternoon. Heavy freezing spray. Scattered snow showers in the morning. Numerous snow showers in the afternoon. Waves subsiding to 4 to 7 feet occasionally to 9 feet, then building to 9 to 12 feet occasionally to 15 feet. .TONIGHT...Northwest winds 20 to 30 knots. Heavy freezing spray. Numerous snow showers. Waves subsiding to 6 to 9 feet occasionally to 11 feet. .FRIDAY...Northwest winds 20 to 30 knots diminishing to 15 to 25 knots. Heavy freezing spray. Numerous snow showers in the morning. Scattered snow showers in the afternoon. Waves subsiding to 3 to 5 feet occasionally to 7 feet. .FRIDAY NIGHT...Northwest winds 15 to 25 knots diminishing to 10 to 20 knots after midnight. Scattered snow showers. Waves subsiding to 1 to 3 feet. .SATURDAY...West winds 5 to 15 knots. Scattered snow showers. Waves subsiding to calm to 2 feet. .SATURDAY NIGHT...Southwest winds 5 to 15 knots veering west after midnight. A chance of snow showers. Waves calm to 2 feet. .SUNDAY...Northwest winds 5 to 15 knots increasing to 10 to 20 knots. Waves building to 1 to 3 feet. .MONDAY...West winds 20 to 30 knots. Heavy freezing spray. Waves building to 3 to 6 feet occasionally to 8 feet. Note, wave height forecasts are for ice free areas. $$ LSZ264-222100- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 415 AM EST Thu Jan 22 2026 ...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH LATE FRIDAY NIGHT... .EARLY THIS MORNING...Northwest winds 20 to 30 knots. Heavy freezing spray. Scattered snow showers. Waves 5 to 8 feet occasionally to 10 feet. .TODAY...Northwest winds 20 to 30 knots. Heavy freezing spray. Scattered snow showers. Waves building to 8 to 11 feet occasionally to 14 feet. .TONIGHT...Northwest winds 20 to 30 knots. Heavy freezing spray. Numerous snow showers. Waves subsiding to 7 to 10 feet occasionally to 13 feet, then building to 8 to 11 feet occasionally to 14 feet. .FRIDAY...Northwest winds to 30 knots with a few gale force gusts to 35 knots possible diminishing to 20 to 30 knots. Heavy freezing spray. Numerous snow showers in the morning. Scattered snow showers in the afternoon. Waves subsiding to 3 to 6 feet occasionally to 8 feet. .FRIDAY NIGHT...Northwest winds 15 to 25 knots diminishing to 10 to 20 knots after midnight. Heavy freezing spray in the evening. Scattered snow showers. Waves subsiding to 2 to 4 feet. .SATURDAY...Northwest winds 5 to 15 knots backing west in the afternoon. Scattered snow showers. Waves subsiding to calm to 2 feet. .SATURDAY NIGHT...West winds 5 to 15 knots. A chance of snow showers. Waves calm to 2 feet. .SUNDAY...Northwest winds 5 to 15 knots increasing to 10 to 20 knots. Waves building to 2 to 4 feet. .MONDAY...West winds 20 to 30 knots veering northwest. Heavy freezing spray. Waves building to 4 to 7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. Note, wave height forecasts are for ice free areas. $$ LSZ265-222100- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 415 AM EST Thu Jan 22 2026 ...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH LATE FRIDAY NIGHT... ...GALE WARNING IN EFFECT THROUGH FRIDAY AFTERNOON... .EARLY THIS MORNING...West gales to 35 knots. Heavy freezing spray. Numerous snow showers. Waves 4 to 8 feet occasionally to 10 feet. .TODAY...Northwest gales to 35 knots. Heavy freezing spray. Numerous snow showers. Waves subsiding to 3 to 6 feet occasionally to 8 feet, then building to 5 to 8 feet occasionally to 10 feet. .TONIGHT...Northwest gales to 35 knots. Heavy freezing spray. Numerous snow showers. Waves building to 7 to 10 feet occasionally to 13 feet. .FRIDAY...Northwest gales to 40 knots. Heavy freezing spray. Numerous snow showers. Waves subsiding to 4 to 7 feet occasionally to 9 feet. .FRIDAY NIGHT...Northwest winds 20 to 30 knots becoming west 15 to 25 knots after midnight. Heavy freezing spray in the evening. Scattered snow showers. Waves subsiding to 1 to 3 feet. .SATURDAY...West winds 15 to 25 knots diminishing to 10 to 20 knots in the afternoon. Scattered snow showers. Waves subsiding to calm to 2 feet. .SATURDAY NIGHT...Southwest winds 10 to 20 knots veering west after midnight. Waves calm to 2 feet. .SUNDAY...West winds 10 to 20 knots increasing to 15 to 25 knots. Waves building to 2 to 4 feet. .MONDAY...West winds 20 to 30 knots. Waves building to 3 to 6 feet occasionally to 8 feet. Note, wave height forecasts are for ice free areas. $$ LSZ266-222100- 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- 415 AM EST Thu Jan 22 2026 ...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH SATURDAY MORNING... ...GALE WARNING IN EFFECT THROUGH FRIDAY AFTERNOON... .EARLY THIS MORNING...Northwest gales to 35 knots. Heavy freezing spray. Numerous snow showers. Waves 6 to 9 feet occasionally to 11 feet building to 7 to 10 feet occasionally to 13 feet. .TODAY...Northwest gales to 35 knots. Heavy freezing spray. Snow showers. Waves building to 8 to 11 feet occasionally to 14 feet. .TONIGHT...Northwest gales to 35 knots. Heavy freezing spray. Snow showers. Waves building to 10 to 14 feet occasionally to 18 feet, then subsiding to 9 to 12 feet occasionally to 15 feet. .FRIDAY...Northwest gales to 40 knots. Heavy freezing spray. Snow showers. Waves subsiding to 7 to 10 feet occasionally to 13 feet. .FRIDAY NIGHT...Northwest winds 20 to 30 knots diminishing to 15 to 25 knots after midnight. Heavy freezing spray. Numerous snow showers in the evening. Scattered snow showers after midnight. Waves subsiding to 3 to 6 feet occasionally to 8 feet. .SATURDAY...West winds 10 to 20 knots. Scattered snow showers. Waves subsiding to 1 to 3 feet. .SATURDAY NIGHT...Southwest winds 10 to 20 knots. A chance of snow showers. Waves 1 to 3 feet. .SUNDAY...West winds 10 to 20 knots becoming northwest 15 to 25 knots. A chance of snow showers. Waves building to 3 to 5 feet occasionally to 7 feet. .MONDAY...West winds 20 to 30 knots. Heavy freezing spray. A chance of snow showers. Waves building to 5 to 8 feet occasionally to 10 feet. Note, wave height forecasts are for ice free areas. $$ LSZ267-222100- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 415 AM EST Thu Jan 22 2026 ...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH SATURDAY MORNING... ...GALE WARNING IN EFFECT THROUGH FRIDAY AFTERNOON... .EARLY THIS MORNING...West gales to 35 knots. Heavy freezing spray. Snow showers. Waves 6 to 9 feet occasionally to 11 feet. .TODAY...West winds 20 to 30 knots becoming northwest gales to 35 knots by mid afternoon. Heavy freezing spray. Snow showers. Waves building to 8 to 11 feet occasionally to 14 feet. .TONIGHT...Northwest gales to 35 knots becoming north 20 to 30 knots late. Heavy freezing spray. Snow showers. Waves building to 10 to 14 feet occasionally to 18 feet, then subsiding to 9 to 12 feet occasionally to 15 feet. .FRIDAY...Northwest winds 20 to 30 knots. Heavy freezing spray. Snow showers. Waves subsiding to 7 to 10 feet occasionally to 13 feet. .FRIDAY NIGHT...Northwest winds 20 to 30 knots diminishing to 10 to 20 knots after midnight. Heavy freezing spray. Numerous snow showers. Waves subsiding to 3 to 6 feet occasionally to 8 feet. .SATURDAY...Northwest winds 10 to 20 knots backing west in the afternoon. Numerous snow showers in the morning, then scattered snow showers in the afternoon. Waves subsiding to 1 to 3 feet. .SATURDAY NIGHT...Southwest winds 10 to 20 knots. A chance of snow showers. Waves 1 to 3 feet. .SUNDAY...South winds 10 to 20 knots veering northwest. A chance of snow showers. Waves building to 3 to 5 feet occasionally to 7 feet. .MONDAY...West winds 15 to 25 knots increasing to 20 to 30 knots. Freezing spray. A chance of snow showers. Waves building to 5 to 8 feet occasionally to 10 feet. Note, wave height forecasts are for ice free areas. $$ LSZ261-221500- MAFOR 2210/ Superior West...HEAVY FREEZING SPRAY WARNING IN EFFECT...11742 11732 11732 19737 14742 19747 11732 19737. Waves 4 to 7 feet subsiding to 3 to 6 feet, then building to 7 to 10 feet today. Waves 7 to 11 feet subsiding to 5 to 9 feet tonight. Superior North Central...HEAVY FREEZING SPRAY WARNING IN EFFECT... 14742 19747 14747. Waves 5 to 9 feet today. Waves 7 to 11 feet tonight. Superior South Central...GALE WARNING IN EFFECT...HEAVY FREEZING SPRAY WARNING IN EFFECT...15747 11747 11757. Waves 5 to 9 feet today. Waves 7 to 11 feet building to 9 to 12 feet tonight. Superior East...GALE WARNING IN EFFECT...HEAVY FREEZING SPRAY WARNING IN EFFECT...12747 11647 19657 14747 19757 11847. Waves 6 to 10 feet building to 8 to 11 feet today. Waves 9 to 13 feet tonight. $$ WFO MQT Experimental modernized open lake forecast is available online at weather.gov/mqt/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes