National Weather Service Marine Forecast FZUS63 KMQT
FZUS63 KMQT 131501
GLFLS
Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1000 AM EST Tue Jan 13 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 29.2 inch low moves over northern Lake Superior today. This low then tracks through Quebec tonight into Wednesday morning. Meanwhile, a 30.5 inch high pressure builds over the eastern Dakotas Wednesday morning, sliding around the southwestern periphery of the Great Lakes Thursday while weakening to 30.1 inches. The ridging is followed up by a 29.4 inch low moving over Lake Superior on Friday, which weakens to 29.6 inches over southern Ontario Saturday. Meanwhile, high pressure of at least 30.2 inches will settle west of the Great Lakes over the weekend.
LSZ162-132100
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM
1000 AM EST Tue Jan 13 2026 /900 AM CST Tue Jan 13 2026/
GALE WARNING IN EFFECT FROM 10 PM EST /9 PM CST/ THIS EVENING THROUGH WEDNESDAY AFTERNOON
HEAVY FREEZING SPRAY WARNING IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY AFTERNOON
REST OF TODAY
West winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. A slight chance of rain showers. Waves
2 to 4 feet building to 3 to 5 feet occasionally to 7 feet.
TONIGHT
Northwest gales to 35 knots becoming north gales to
40 knots by midnight. Heavy freezing spray. Waves building to
5 to 9 feet occasionally to 11 feet.
WEDNESDAY
North gales to 35 knots diminishing to 15 to
25 knots. Heavy freezing spray in the morning. Waves subsiding to
2 to 4 feet.
WEDNESDAY NIGHT
North winds 15 to 25 knots diminishing to 5 to
15 knots after midnight. Waves subsiding to calm to 2 feet.
THURSDAY
Southwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. A slight chance of snow showers in the
morning, then snow showers likely in the afternoon. Waves
building to 3 to 6 feet occasionally to 8 feet.
THURSDAY NIGHT
Southwest winds 20 to 30 knots becoming west
10 to 20 knots after midnight. Snow showers likely in the
evening, then a chance of snow showers after midnight. Waves
subsiding to calm to 2 feet.
FRIDAY
Northwest winds 20 to 30 knots veering north. Snow
showers likely, then a chance of snow showers. Waves building to
3 to 5 feet occasionally to 7 feet, then subsiding to 2 to
4 feet.
SATURDAY
North winds 20 to 30 knots. Waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 1 to 3 feet.
Note, wave height forecasts are for ice free areas.
LSZ263-132100
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 Tue Jan 13 2026
GALE WARNING IN EFFECT FROM 7 PM EST THIS EVENING THROUGH WEDNESDAY AFTERNOON
HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 10 PM EST THIS EVENING THROUGH WEDNESDAY AFTERNOON
REST OF TODAY
West winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. A chance of snow showers, possibly
mixed with rain. Waves 3 to 5 feet occasionally to 7 feet
building to 5 to 8 feet occasionally to 10 feet.
TONIGHT
North gales to 45 knots. Heavy freezing spray. A
slight chance of rain showers in the evening. A slight chance of
snow showers. Waves building to 11 to 15 feet occasionally to
19 feet, then subsiding to 10 to 14 feet occasionally to 18 feet.
WEDNESDAY
North gales to 40 knots diminishing to 20 to
30 knots by mid afternoon. Heavy freezing spray. Waves subsiding
to 3 to 6 feet occasionally to 8 feet.
WEDNESDAY NIGHT
North winds 20 to 30 knots diminishing to
10 to 20 knots after midnight. Freezing spray in the evening.
Waves subsiding to 1 to 3 feet.
THURSDAY
Southwest winds 15 to 25 knots increasing to gales to
35 knots in the afternoon. A chance of snow showers in the
afternoon. Waves subsiding to calm to 2 feet, then building to
5 to 8 feet occasionally to 10 feet.
THURSDAY NIGHT
Southwest winds 20 to 30 knots becoming west
10 to 20 knots after midnight. A chance of snow showers. Waves
subsiding to 2 to 4 feet.
FRIDAY
Northwest winds 20 to 30 knots veering north. A chance
of snow showers. Freezing spray. Waves building to 5 to 8 feet
occasionally to 10 feet.
SATURDAY
North winds 20 to 30 knots increasing to gales to
35 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.
LSZ264-132100
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border
1000 AM EST Tue Jan 13 2026
GALE WARNING IN EFFECT FROM 7 PM EST THIS EVENING THROUGH WEDNESDAY AFTERNOON
HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 10 PM EST THIS EVENING THROUGH LATE WEDNESDAY NIGHT
REST OF TODAY
Southwest winds 15 to 25 knots veering west by
late morning, then becoming northwest 20 to 30 knots by mid
afternoon. A chance of rain and snow showers. Waves 2 to 4 feet
building to 4 to 7 feet occasionally to 9 feet.
TONIGHT
North gales to 45 knots. Heavy freezing spray. A
chance of snow showers. Waves building to 15 to 20 feet
occasionally to 25 feet, then subsiding to 12 to 17 feet
occasionally to 21 feet.
WEDNESDAY
North gales to 45 knots diminishing to 20 to
30 knots by mid afternoon. Heavy freezing spray. A slight chance
of snow showers. Waves subsiding to 6 to 9 feet occasionally to
11 feet.
WEDNESDAY NIGHT
North winds 20 to 30 knots diminishing to
10 to 20 knots after midnight. Freezing spray in the evening.
Waves subsiding to 2 to 4 feet.
THURSDAY
West winds 10 to 20 knots becoming southwest 20 to
30 knots in the afternoon. A slight chance of snow showers in the
afternoon. Waves subsiding to calm to 2 feet, then building to
3 to 6 feet occasionally to 8 feet.
THURSDAY NIGHT
Southwest winds 20 to 30 knots diminishing to
10 to 20 knots after midnight. A chance of snow showers. Waves
building to 4 to 7 feet occasionally to 9 feet, then subsiding to
2 to 4 feet.
FRIDAY
North winds 20 to 30 knots. A chance of snow showers.
Freezing spray. Waves building to 5 to 8 feet occasionally to
10 feet.
SATURDAY
North winds 20 to 30 knots increasing to gales to
35 knots. Heavy freezing spray. Waves subsiding to 4 to 8 feet
occasionally to 10 feet.
Note, wave height forecasts are for ice free areas.
LSZ265-132100
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore
1000 AM EST Tue Jan 13 2026
GALE WARNING IN EFFECT FROM 7 PM EST THIS EVENING THROUGH WEDNESDAY EVENING
HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 10 PM EST THIS EVENING THROUGH LATE WEDNESDAY NIGHT
REST OF TODAY
Southwest winds 15 to 25 knots veering west by
late morning, then increasing to gales to 35 knots by mid
afternoon. Rain showers, possibly mixed with snow late in the
morning, then a chance of rain and snow showers in the afternoon.
Waves calm to 2 feet building to 3 to 6 feet occasionally to
8 feet.
TONIGHT
Northwest gales to 40 knots becoming north gales to
45 knots by midnight, then increasing to gales to 45 knots with a
few storm force gusts to 50 knots possible late. Heavy freezing
spray. A chance of snow showers, possibly mixed with rain in the
evening. Snow showers after midnight. Waves building to 15 to
20 feet occasionally to 25 feet.
WEDNESDAY
North gales to 45 knots. Heavy freezing spray. A
chance of snow showers. Waves subsiding to 9 to 12 feet
occasionally to 15 feet.
WEDNESDAY NIGHT
North gales to 35 knots diminishing to 15 to
25 knots after midnight. A slight chance of snow showers in the
evening. Freezing spray. Waves subsiding to 3 to 6 feet
occasionally to 8 feet.
THURSDAY
West winds 15 to 25 knots backing southwest in the
afternoon. A slight chance of snow showers in the afternoon.
Waves subsiding to calm to 2 feet, then building to 1 to 3 feet.
THURSDAY NIGHT
Southwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. A chance of snow showers. Waves
building to 2 to 4 feet, then subsiding to calm to 2 feet.
FRIDAY
Northwest winds 20 to 30 knots increasing to gales to
35 knots. A chance of snow showers. Freezing spray. Waves
building to 5 to 8 feet occasionally to 10 feet.
SATURDAY
North gales to 35 knots. Heavy freezing spray. A
chance of snow showers. Waves building to 5 to 9 feet
occasionally to 11 feet.
Note, wave height forecasts are for ice free areas.
LSZ266-132100
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 Tue Jan 13 2026
GALE WARNING IN EFFECT FROM 7 PM EST THIS EVENING THROUGH WEDNESDAY EVENING
HEAVY FREEZING SPRAY WARNING IN EFFECT FROM LATE TONIGHT THROUGH LATE WEDNESDAY NIGHT
REST OF TODAY
South winds 15 to 25 knots veering west by late
morning, then increasing to 20 to 30 knots by mid afternoon. Snow
showers likely late in the morning. A chance of rain showers. A
chance of snow showers in the afternoon. Waves 3 to 5 feet
occasionally to 7 feet building to 4 to 7 feet occasionally to
9 feet.
TONIGHT
Northwest gales to 40 knots becoming north gales to
45 knots by midnight, then increasing to gales to 45 knots with a
few storm force gusts to 50 knots possible late. Heavy freezing
spray. A chance of snow showers, possibly mixed with rain in the
evening. Snow showers after midnight. Waves building to 17 to
22 feet occasionally to 28 feet.
WEDNESDAY
North gales to 45 knots. Heavy freezing spray. A
chance of snow showers. Waves subsiding to 10 to 14 feet
occasionally to 18 feet.
WEDNESDAY NIGHT
North gales to 35 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.
THURSDAY
Northwest winds 10 to 20 knots becoming southwest
15 to 25 knots in the afternoon. A slight chance of snow showers
in the afternoon. Waves subsiding to 1 to 3 feet, then building
to 3 to 5 feet occasionally to 7 feet.
THURSDAY NIGHT
Southwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. A chance of snow showers. Waves
building to 3 to 6 feet occasionally to 8 feet.
FRIDAY
Southwest winds 20 to 30 knots veering north. A chance
of snow showers. Freezing spray. Waves subsiding to 2 to 4 feet,
then building to 5 to 8 feet occasionally to 10 feet.
SATURDAY
North gales to 35 knots. Freezing spray. A chance of
snow showers. Waves building to 6 to 9 feet occasionally to
11 feet.
Note, wave height forecasts are for ice free areas.
LSZ267-132100
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border
1000 AM EST Tue Jan 13 2026
GALE WARNING IN EFFECT FROM 10 PM EST THIS EVENING THROUGH WEDNESDAY EVENING
HEAVY FREEZING SPRAY WARNING IN EFFECT FROM LATE TONIGHT THROUGH LATE WEDNESDAY NIGHT
REST OF TODAY
South winds 20 to 30 knots becoming west 15 to
25 knots by mid afternoon. A slight chance of rain showers late
in the morning. Snow showers. Rain showers likely in the
afternoon. Waves 3 to 5 feet occasionally to 7 feet subsiding to
2 to 4 feet, then building to 3 to 6 feet occasionally to 8 feet.
TONIGHT
Northwest gales to 35 knots becoming north gales to
40 knots by midnight. A chance of snow showers, possibly mixed
with rain in the evening, then snow showers likely after
midnight. Heavy freezing spray after midnight. Waves building to
12 to 17 feet occasionally to 21 feet, then subsiding to 11 to
15 feet occasionally to 19 feet.
WEDNESDAY
North gales to 40 knots. Heavy freezing spray. Snow
showers likely in the morning. A slight chance of snow showers in
the afternoon. Waves subsiding to 8 to 11 feet occasionally to
14 feet.
WEDNESDAY NIGHT
North gales to 35 knots diminishing to 15 to
25 knots after midnight. A slight chance of snow showers in the
evening. Heavy freezing spray. Waves subsiding to 3 to 5 feet
occasionally to 7 feet.
THURSDAY
North winds 10 to 20 knots becoming southwest 15 to
25 knots in the afternoon. Waves subsiding to calm to 2 feet,
then building to 2 to 4 feet.
THURSDAY NIGHT
South winds 20 to 30 knots. A chance of snow
showers. Waves building to 3 to 6 feet occasionally to 8 feet.
FRIDAY
South winds 15 to 25 knots backing northeast. Snow
showers likely, then a chance of snow showers. Waves subsiding to
2 to 4 feet, then building to 3 to 5 feet occasionally to 7 feet.
SATURDAY
Northeast winds 15 to 25 knots becoming north 20 to
30 knots. A chance of snow showers. Freezing spray. Waves
building to 3 to 6 feet occasionally to 8 feet.
Note, wave height forecasts are for ice free areas.
LSZ261-132100
MAFOR 1316/
Superior West...GALE WARNING IN EFFECT...HEAVY FREEZING SPRAY
WARNING IN EFFECT...12630 11740 12850 12852 11840. Waves 3 to 6
feet this afternoon. Waves 4 to 7 feet building to 7 to 10 feet
tonight. Waves 7 to 10 feet subsiding to 5 to 8 feet Wednesday
morning.
Superior North Central...GALE WARNING IN EFFECT...HEAVY FREEZING SPRAY WARNING IN EFFECT...11630 11730 11750 11860 14862. A chance of snow showers late this morning, then a chance of rain and snow showers this afternoon. A chance of snow showers tonight. Waves 2 to 4 feet building to 3 to 6 feet this afternoon. Waves 8 to 11 feet building to 13 to 17 feet tonight. Waves 13 to 17 feet subsiding to 11 to 15 feet Wednesday morning.
Superior South Central...GALE WARNING IN EFFECT...HEAVY FREEZING SPRAY WARNING IN EFFECT...11637 11640 11747 11751 13867 11862. Waves 1 to 3 feet building to 4 to 7 feet this afternoon. Waves 5 to 8 feet building to 15 to 20 feet tonight. Waves 15 to 20 feet Wednesday morning.
Superior East...GALE WARNING IN EFFECT...HEAVY FREEZING SPRAY WARNING IN EFFECT...11537 11630 11747 11750 11850 13857. Waves 3 to 6 feet this afternoon. Waves 6 to 9 feet building to 12 to 17 feet tonight. Waves 10 to 15 feet Wednesday 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
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