Great Lakes Forecast
Issued by NWS
Issued by NWS
139 FZUS63 KMQT 251501 GLFLS Open Lake Forecast for Lake Superior National Weather Service Marquette MI 1000 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... Remnant 30.4 inch ridging over Lake Superior this morning gradually weakens to 30.1 inches through Monday morning as a 30.7 inch high lifts through the Saint Lawrence Seaway today, while another 30.8 inch high drops south through the Northern Plains. A 29.8 inch low from Manitoba deepens to 29.6 inches crosses the lake Monday night into Tuesday. A much weaker low grazes the northeast portion of the lake at 30.1 inches Tuesday night into Wednesday. Strong high pressure descending from the Canadian Prairies late this week brings ridging of around 30.6 inches back over Lake Superior by Friday, with ridging looking to persist into next weekend. LSZ162-252100- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 1000 AM EST Sun Jan 25 2026 /900 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... .REST OF TODAY...North winds 10 to 20 knots backing northwest. A chance of snow showers. Waves 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 3 to 5 feet occasionally to 7 feet. .TUESDAY...Northwest winds 15 to 25 knots. Waves subsiding to 2 to 4 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. $$ LSZ263-252100- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- 1000 AM EST Sun Jan 25 2026 ...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM MONDAY MORNING THROUGH MONDAY EVENING... ...GALE WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH LATE MONDAY NIGHT... .REST OF TODAY...North winds 10 to 20 knots. A chance of snow showers. Waves 2 to 4 feet subsiding to 1 to 3 feet. .TONIGHT...Northwest winds 10 to 20 knots increasing to 15 to 25 knots late. A chance of snow showers. Waves building to 3 to 5 feet occasionally to 7 feet. .MONDAY...West winds 20 to 30 knots becoming southwest gales to 35 knots by mid afternoon. A chance of snow showers. Heavy freezing spray in the afternoon. Waves building to 7 to 10 feet occasionally to 13 feet. .MONDAY NIGHT...West gales to 35 knots becoming northwest 20 to 30 knots after midnight. Heavy freezing spray. Snow showers likely in the evening. A chance of snow showers after midnight. Waves subsiding to 4 to 7 feet occasionally to 9 feet. .TUESDAY...Northwest winds 20 to 30 knots diminishing to 15 to 25 knots in the afternoon. A slight chance of snow showers. Waves subsiding to 3 to 5 feet occasionally to 7 feet. .TUESDAY NIGHT...Northwest winds 15 to 25 knots diminishing to 10 to 20 knots after midnight. A chance of snow showers. Waves building to 3 to 6 feet occasionally to 8 feet, then subsiding to 2 to 4 feet. .WEDNESDAY...North winds 10 to 20 knots. Waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. .THURSDAY...North winds 10 to 20 knots. Waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. Note, wave height forecasts are for ice free areas. $$ LSZ264-252100- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 1000 AM EST Sun Jan 25 2026 ...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM MONDAY MORNING THROUGH MONDAY EVENING... .REST OF 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 subsiding to 2 to 4 feet, then building to 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 4 to 7 feet occasionally to 9 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 building to 5 to 8 feet occasionally to 10 feet, then subsiding to 3 to 6 feet occasionally to 8 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 2 to 4 feet. .THURSDAY...North winds 10 to 20 knots. Waves 2 to 4 feet. Note, wave height forecasts are for ice free areas. $$ LSZ265-252100- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- 1000 AM EST Sun Jan 25 2026 ...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 7 PM EST THIS EVENING... .REST OF TODAY...Northwest winds 10 to 20 knots increasing to 20 to 30 knots by mid afternoon. A chance of snow showers. Heavy freezing spray in the afternoon. Waves 1 to 3 feet building to 3 to 6 feet occasionally to 8 feet. .TONIGHT...Northwest winds 20 to 30 knots. A chance of snow showers. Waves subsiding to 2 to 4 feet. .MONDAY...West winds 20 to 30 knots backing southwest by mid afternoon. A chance of snow showers in the morning. Waves building to 3 to 6 feet occasionally to 8 feet. .MONDAY NIGHT...Southwest winds 20 to 30 knots veering northwest after midnight. A chance of snow showers. Waves building to 3 to 6 feet occasionally to 8 feet. .TUESDAY...Northwest gales to 35 knots. Heavy freezing spray. A chance of snow showers. Waves building to 4 to 7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. .TUESDAY NIGHT...Northwest winds 20 to 30 knots. A chance of snow showers. Waves subsiding to 2 to 4 feet. .WEDNESDAY...Northwest winds 15 to 25 knots veering north. A chance of snow showers. Waves building to 3 to 5 feet occasionally to 7 feet. .THURSDAY...North winds 15 to 25 knots. A chance of snow showers. Waves building to 3 to 6 feet occasionally to 8 feet. Note, wave height forecasts are for ice free areas. $$ 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- 1000 AM EST Sun Jan 25 2026 ...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH MONDAY EVENING... .REST OF TODAY...West winds 10 to 20 knots becoming north 15 to 25 knots. Snow showers likely late in the morning, then a chance of snow showers in the afternoon. Heavy freezing spray in the afternoon. Waves 3 to 5 feet occasionally to 7 feet 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 4 to 7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet occasionally to 8 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 4 to 7 feet occasionally to 9 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 10 feet occasionally to 13 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 6 feet occasionally to 8 feet. .WEDNESDAY...North winds 15 to 25 knots. A chance of snow showers. Heavy freezing spray. Waves subsiding 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 subsiding to 3 to 6 feet occasionally to 8 feet. Note, wave height forecasts are for ice free areas. $$ LSZ267-252100- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 1000 AM EST Sun Jan 25 2026 ...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 7 PM EST THIS EVENING THROUGH MONDAY EVENING... .REST OF TODAY...South winds 10 to 20 knots veering southwest by mid afternoon. A chance of snow showers. Waves 1 to 3 feet building to 3 to 5 feet occasionally to 7 feet. .TONIGHT...North winds 15 to 25 knots becoming northwest 10 to 20 knots late. Heavy freezing spray. Snow showers likely. Waves building to 4 to 7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. .MONDAY...Northwest winds 10 to 20 knots increasing to 15 to 25 knots by late morning, then backing west by mid afternoon. Freezing spray. A chance of snow showers. Waves building to 4 to 7 feet occasionally to 9 feet. .MONDAY NIGHT...Southwest winds 20 to 30 knots becoming west 15 to 25 knots after midnight. Heavy freezing spray. A chance of snow showers in the evening. Snow showers likely after midnight. Waves building to 4 to 8 feet occasionally to 10 feet. .TUESDAY...Northwest winds 15 to 25 knots. Freezing spray. A chance of snow showers. Waves building to 5 to 9 feet occasionally to 11 feet. .TUESDAY NIGHT...Northwest winds 15 to 25 knots becoming north 10 to 20 knots after midnight. Freezing spray. A chance of snow showers. Waves subsiding to 3 to 6 feet occasionally to 8 feet. .WEDNESDAY...North winds 10 to 20 knots increasing to 15 to 25 knots. A chance of snow showers. Waves subsiding to 2 to 4 feet. .THURSDAY...North winds 15 to 25 knots. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. Note, wave height forecasts are for ice free areas. $$ LSZ261-252100- MAFOR 2516/ Superior West...HEAVY FREEZING SPRAY WARNING IN EFFECT...11810 11710 11720 14730 11640. A chance of snow showers this afternoon. Waves 1 to 3 feet this afternoon. Waves 2 to 4 feet tonight. Waves 2 to 4 feet building to 3 to 5 feet Monday morning. Superior North Central...HEAVY FREEZING SPRAY WARNING IN EFFECT... 11820 15730 11730. A chance of snow showers late this morning, tonight, and Monday morning. Waves 3 to 5 feet this afternoon. Waves 3 to 5 feet subsiding to 2 to 4 feet tonight. Waves 3 to 5 feet Monday morning. Superior South Central...HEAVY FREEZING SPRAY WARNING IN EFFECT... 11727 13732 13730 11642. Waves 2 to 4 feet building to 3 to 6 feet this afternoon. Waves 3 to 6 feet tonight and Monday morning. Superior East...HEAVY FREEZING SPRAY WARNING IN EFFECT...11527 11637 12837 11737 11727 11737 11730. Waves 2 to 4 feet building to 3 to 5 feet this afternoon. Waves 3 to 6 feet tonight. Waves 4 to 6 feet Monday morning. $$ 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