Great Lakes Forecast
Issued by NWS
Issued by NWS
430 FZUS63 KMQT 250900 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 400 AM EST Sun Jan 25 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... While remnant 30.4 inch ridging over Lake Superior weakens to 30.2 inches by this evening, expect it to remain over the lake until Monday morning as a 30.7 inch high lifts through the St. Lawrence Seaway today and another 30.8 inch high digs into the Northern Plains. A 29.8 inch low from Manitoba crosses the lake Monday night into Tuesday, deepening to 29.6 inches as it does so. Another low, much weaker at 30.1 inches, grazes the northeast portion of the lake Tuesday night into Wednesday. A strong high pressure descending from the Canadian Prairies late this week brings ridging of around 30.6 inches back to Lake Superior by Friday, with the ridging looking to stay into this upcoming weekend. LSZ162-252100- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 400 AM EST Sun Jan 25 2026 /300 AM CST Sun Jan 25 2026/ ...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM MONDAY MORNING THROUGH MONDAY EVENING... ...GALE WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH LATE MONDAY NIGHT... .EARLY THIS MORNING...Northwest winds 5 to 15 knots. A chance of snow showers. Waves 1 to 3 feet. .TODAY...North winds 5 to 15 knots becoming northwest 10 to 20 knots. A chance of snow showers. Waves subsiding to calm to 2 feet. .TONIGHT...Northwest winds 10 to 20 knots increasing to 15 to 25 knots by midnight. A slight chance of snow showers. Waves building to 2 to 4 feet, then subsiding to 1 to 3 feet. .MONDAY...West winds 15 to 25 knots becoming southwest 20 to 30 knots by late morning, then increasing to gales to 35 knots by mid afternoon. A chance of snow showers in the afternoon. Waves building to 6 to 9 feet occasionally to 11 feet. .MONDAY NIGHT...West gales to 35 knots becoming northwest 20 to 30 knots after midnight. A chance of snow showers. Waves subsiding to 2 to 4 feet. .TUESDAY...Northwest winds 15 to 25 knots. Waves subsiding to 1 to 3 feet. .TUESDAY NIGHT...Northwest winds 15 to 25 knots diminishing to 10 to 20 knots after midnight. Waves subsiding to calm to 2 feet. .WEDNESDAY...Northwest winds 10 to 20 knots veering north. Waves calm to 2 feet. .THURSDAY...North winds 5 to 15 knots increasing to 10 to 20 knots. Waves calm to 2 feet. Note, wave height forecasts are for ice free areas. $$ LSZ263-252100- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- 400 AM EST Sun Jan 25 2026 ...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM MONDAY MORNING THROUGH MONDAY EVENING... ...GALE WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH LATE MONDAY NIGHT... .EARLY THIS MORNING...North winds 10 to 20 knots. Snow showers likely. Waves 2 to 4 feet. .TODAY...North winds 10 to 20 knots. A chance of snow showers. Waves subsiding to 1 to 3 feet. .TONIGHT...Northwest winds 10 to 20 knots increasing to 15 to 25 knots late. A chance of snow showers. Waves building to 3 to 5 feet occasionally to 7 feet. .MONDAY...West winds 20 to 30 knots becoming southwest gales to 35 knots by mid afternoon. A chance of snow showers. Heavy freezing spray in the afternoon. Waves building to 7 to 10 feet occasionally to 13 feet. .MONDAY NIGHT...West gales to 35 knots becoming northwest 20 to 30 knots after midnight. Heavy freezing spray. Snow showers likely in the evening. A chance of snow showers after midnight. Waves subsiding to 3 to 6 feet occasionally to 8 feet. .TUESDAY...Northwest winds 20 to 30 knots diminishing to 15 to 25 knots in the afternoon. Waves subsiding to 2 to 4 feet. .TUESDAY NIGHT...Northwest winds 15 to 25 knots diminishing to 10 to 20 knots after midnight. A chance of snow showers. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to 1 to 3 feet. .WEDNESDAY...North winds 10 to 20 knots. Waves building to 2 to 4 feet. .THURSDAY...North winds 10 to 20 knots. Waves subsiding to 1 to 3 feet. Note, wave height forecasts are for ice free areas. $$ LSZ264-252100- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 400 AM EST Sun Jan 25 2026 ...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM MONDAY MORNING THROUGH MONDAY EVENING... .EARLY THIS MORNING...North winds 10 to 20 knots. Snow showers likely. Waves 2 to 4 feet building to 3 to 5 feet occasionally to 7 feet. .TODAY...North winds 10 to 20 knots backing northwest by mid afternoon. A chance of snow showers. Waves 3 to 5 feet occasionally to 7 feet. .TONIGHT...Northwest winds 15 to 25 knots diminishing to 10 to 20 knots by midnight, then increasing to 15 to 25 knots late. A chance of snow showers. Waves subsiding to 2 to 4 feet. .MONDAY...Northwest winds 10 to 20 knots becoming west 20 to 30 knots by late morning, then backing southwest by mid afternoon. A chance of snow showers. Heavy freezing spray in the afternoon. Waves building to 7 to 10 feet occasionally to 13 feet. .MONDAY NIGHT...West winds 20 to 30 knots veering northwest after midnight. Heavy freezing spray. Snow showers likely in the evening. A chance of snow showers after midnight. Waves subsiding to 3 to 6 feet occasionally to 8 feet. .TUESDAY...Northwest winds 20 to 30 knots diminishing to 15 to 25 knots in the afternoon. Heavy freezing spray in the morning. A chance of snow showers. Waves subsiding to 3 to 5 feet occasionally to 7 feet. .TUESDAY NIGHT...Northwest winds 15 to 25 knots diminishing to 10 to 20 knots after midnight. A chance of snow showers. Waves subsiding to 2 to 4 feet. .WEDNESDAY...North winds 10 to 20 knots. A chance of snow showers. Waves subsiding to 1 to 3 feet, then building to 3 to 5 feet occasionally to 7 feet. .THURSDAY...North winds 10 to 20 knots. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. Note, wave height forecasts are for ice free areas. $$ LSZ265-252100- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 400 AM EST Sun Jan 25 2026 ...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 1 PM EST THIS AFTERNOON THROUGH THIS EVENING... .EARLY THIS MORNING...West winds 10 to 20 knots. A slight chance of snow showers. Waves 1 to 3 feet. .TODAY...West winds 10 to 20 knots veering northwest by late morning, then increasing to 20 to 30 knots by mid afternoon. A chance of snow showers. Heavy freezing spray in the afternoon. Waves building to 3 to 6 feet occasionally to 8 feet. .TONIGHT...Northwest winds 20 to 30 knots. A chance of snow showers. Waves subsiding to 2 to 4 feet. .MONDAY...West winds 20 to 30 knots backing southwest by mid afternoon. A chance of snow showers in the morning. Waves building to 3 to 6 feet occasionally to 8 feet. .MONDAY NIGHT...Southwest winds 20 to 30 knots veering northwest after midnight. A chance of snow showers. Waves building to 3 to 6 feet occasionally to 8 feet. .TUESDAY...Northwest gales to 35 knots. Heavy freezing spray. A chance of snow showers. Waves building to 4 to 7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. .TUESDAY NIGHT...Northwest winds 20 to 30 knots. A chance of snow showers. Waves subsiding to 2 to 4 feet. .WEDNESDAY...Northwest winds 15 to 25 knots veering north. A chance of snow showers. Waves subsiding to 1 to 3 feet, then building to 3 to 6 feet occasionally to 8 feet. .THURSDAY...North winds 15 to 25 knots. A chance of snow showers. Waves subsiding to 3 to 6 feet occasionally to 8 feet. Note, wave height forecasts are for ice free areas. $$ LSZ266-252100- 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- 400 AM EST Sun Jan 25 2026 ...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 1 PM EST THIS AFTERNOON THROUGH MONDAY EVENING... .EARLY THIS MORNING...West winds 10 to 20 knots. A chance of snow showers. Waves 2 to 4 feet. .TODAY...West winds 10 to 20 knots becoming north 15 to 25 knots. A chance of snow showers. Heavy freezing spray in the afternoon. Waves building to 4 to 7 feet occasionally to 9 feet. .TONIGHT...Northwest winds 20 to 30 knots. Heavy freezing spray. A chance of snow showers. Waves building to 5 to 8 feet occasionally to 10 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. .MONDAY...Northwest winds 20 to 30 knots backing west. Heavy freezing spray. A chance of snow showers. Waves building to 5 to 8 feet occasionally to 10 feet. .MONDAY NIGHT...Southwest winds 20 to 30 knots veering west after midnight. Heavy freezing spray. A chance of snow showers. Waves building to 6 to 9 feet occasionally to 11 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. .TUESDAY...Northwest gales to 35 knots diminishing to 20 to 30 knots in the afternoon. Heavy freezing spray. A chance of snow showers. Waves building to 6 to 9 feet occasionally to 11 feet. .TUESDAY NIGHT...Northwest winds 20 to 30 knots diminishing to 15 to 25 knots after midnight. Heavy freezing spray. A chance of snow showers. Waves subsiding to 3 to 5 feet occasionally to 7 feet. .WEDNESDAY...North winds 15 to 25 knots. A chance of snow showers. Heavy freezing spray. Waves subsiding to 2 to 4 feet, then building to 3 to 6 feet occasionally to 8 feet. .THURSDAY...North winds 20 to 30 knots. Heavy freezing spray. A chance of snow showers. Waves 3 to 6 feet occasionally to 8 feet. Note, wave height forecasts are for ice free areas. $$ LSZ267-252100- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 400 AM EST Sun Jan 25 2026 ...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM THIS EVENING THROUGH MONDAY EVENING... .EARLY THIS MORNING...South winds 10 to 20 knots. A slight chance of snow showers. Waves 2 to 4 feet. .TODAY...South winds 10 to 20 knots veering southwest by mid afternoon. A chance of snow showers. Waves subsiding to 1 to 3 feet, then building to 3 to 5 feet occasionally to 7 feet. .TONIGHT...North winds 15 to 25 knots becoming northwest 10 to 20 knots late. Heavy freezing spray. Snow showers likely. Waves building to 4 to 7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. .MONDAY...Northwest winds 10 to 20 knots increasing to 15 to 25 knots by late morning, then backing west by mid afternoon. Freezing spray. A chance of snow showers. Waves building to 4 to 7 feet occasionally to 9 feet. .MONDAY NIGHT...Southwest winds 20 to 30 knots becoming west 15 to 25 knots after midnight. Heavy freezing spray. A chance of snow showers in the evening. Snow showers likely after midnight. Waves building to 5 to 8 feet occasionally to 10 feet, then subsiding to 3 to 5 feet occasionally to 7 feet. .TUESDAY...Northwest winds 15 to 25 knots. Freezing spray. A chance of snow showers. Waves building to 4 to 7 feet occasionally to 9 feet. .TUESDAY NIGHT...Northwest winds 15 to 25 knots becoming north 10 to 20 knots after midnight. Freezing spray. A chance of snow showers. Waves building to 5 to 8 feet occasionally to 10 feet, then subsiding to 3 to 5 feet occasionally to 7 feet. .WEDNESDAY...North winds 10 to 20 knots increasing to 15 to 25 knots. A chance of snow showers. Waves subsiding to 2 to 4 feet. .THURSDAY...North winds 15 to 25 knots. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. Note, wave height forecasts are for ice free areas. $$ LSZ261-251500- MAFOR 2510/ Superior West 11720 11820 11810 11710 11720 13730. A chance of snow showers today. Waves 1 to 3 feet today. Waves 2 to 4 feet tonight. Superior North Central 11837 12820 14730 11730. Waves 2 to 4 feet building to 3 to 5 feet today. Waves 3 to 5 feet tonight. Superior South Central...HEAVY FREEZING SPRAY WARNING IN EFFECT... 12620 11727 13732 12730. Waves 1 to 3 feet building to 3 to 6 feet today. Waves 3 to 6 feet tonight. Superior East...HEAVY FREEZING SPRAY WARNING IN EFFECT...12520 11527 11637 12837 11737 11727. Waves 2 to 4 feet building to 3 to 5 feet today. Waves 4 to 7 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