448
FZUS63 KMQT 010900
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
400 AM EST Sun Feb 1 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...

The ridge is weakening over the lake early this morning ahead of a
29.8 inch surface low currently analyzed over southern Manitoba.
This will cross Lake Superior as a 30.0 inch trough tonight. The
trough moves over the Ontario/Quebec line late Monday as a 30.4 inch
high moves over northwest Ontario. This high settles south over the
Upper Mississippi River Valley and Plains through Wednesday ahead of
a 29.7 inch low moving into Manitoba by Thursday morning. This
quickly tracks through the Great Lakes Thursday evening through
Friday morning followed by ridging of at least 30.2 inches by Friday
night.


LSZ162-012100-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
400 AM EST Sun Feb 1 2026 /300 AM CST Sun Feb 1 2026/

.EARLY THIS MORNING...South winds 15 to 25 knots. A chance of
snow. Waves 1 to 3 feet building to 2 to 4 feet.
.TODAY...South winds 20 to 30 knots becoming southwest 15 to
25 knots by late morning, then diminishing to 10 to 20 knots by
mid afternoon. A chance of snow in the morning, then snow likely
in the afternoon. Waves subsiding to 1 to 3 feet.
.TONIGHT...West winds 10 to 20 knots veering northwest by
midnight, then increasing to 15 to 25 knots late. A chance of
snow. Waves subsiding to calm to 2 feet.
.MONDAY...Northwest winds 10 to 20 knots. Waves calm to 2 feet.
.MONDAY NIGHT...North winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. Waves calm to 2 feet.
.TUESDAY...North winds 5 to 15 knots backing west in the
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...West winds 5 to 15 knots. Waves calm to 2 feet.
.THURSDAY...Southwest winds 15 to 25 knots veering north. Snow
showers likely. A chance of rain showers. A chance of snow
showers. Waves building to 1 to 3 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ263-012100-
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 Feb 1 2026

.EARLY THIS MORNING...South winds 15 to 25 knots. Waves 1 to
3 feet building to 2 to 4 feet.
.TODAY...South winds 15 to 25 knots veering southwest by late
morning, then diminishing to 10 to 20 knots by mid afternoon. A
chance of snow. Waves building to 3 to 5 feet occasionally to
7 feet.
.TONIGHT...Southwest winds 10 to 20 knots becoming northwest 5 to
15 knots by midnight, then increasing to 10 to 20 knots late.
Snow likely in the evening, then a slight chance of snow after
midnight. Waves subsiding to 1 to 3 feet, then building to 2 to
4 feet.
.MONDAY...Northwest winds 10 to 20 knots. A slight chance of snow
showers. Waves subsiding to 1 to 3 feet.
.MONDAY NIGHT...North winds 10 to 20 knots. A slight chance of
snow showers. Waves building to 2 to 4 feet, then subsiding to
1 to 3 feet.
.TUESDAY...North winds 5 to 15 knots backing northwest in the
afternoon. Waves subsiding to calm to 2 feet.
.TUESDAY NIGHT...Northwest winds 5 to 15 knots backing west after
midnight. Waves calm to 2 feet.
.WEDNESDAY...West winds 5 to 15 knots increasing to 10 to
20 knots. Waves building to 1 to 3 feet, then subsiding to calm
to 2 feet.
.THURSDAY...Southwest winds 15 to 25 knots becoming north 20 to
30 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.

$$

LSZ264-012100-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
400 AM EST Sun Feb 1 2026

.EARLY THIS MORNING...South winds 10 to 20 knots. Waves 1 to
3 feet.
.TODAY...South winds 10 to 20 knots increasing to 15 to 25 knots
by late morning, then diminishing to 10 to 20 knots by mid
afternoon. A chance of snow in the afternoon. Waves building to
3 to 5 feet occasionally to 7 feet.
.TONIGHT...Southwest winds 10 to 20 knots becoming west 5 to
15 knots by midnight, then becoming northwest 10 to 20 knots
late. Snow in the evening, then a chance of snow after midnight.
Waves subsiding to 2 to 4 feet.
.MONDAY...Northwest winds 15 to 25 knots. Freezing spray. A
slight chance of snow showers. Waves building to 3 to 6 feet
occasionally to 8 feet.
.MONDAY NIGHT...North winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. Heavy freezing spray. A chance of snow
showers. Waves subsiding to 3 to 5 feet occasionally to 7 feet.
.TUESDAY...North winds 10 to 20 knots becoming northwest 5 to
15 knots in the afternoon. A chance of snow showers. Waves
subsiding to calm to 2 feet.
.TUESDAY NIGHT...Northwest winds 5 to 15 knots. Waves calm to
2 feet.
.WEDNESDAY...Northwest winds 5 to 15 knots becoming west 10 to
20 knots. Waves building to 1 to 3 feet, then subsiding to calm
to 2 feet.
.THURSDAY...Southwest winds 15 to 25 knots becoming north gales
to 35 knots. A chance of snow showers. Heavy freezing spray.
Waves building to 4 to 7 feet occasionally to 9 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ265-012100-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
400 AM EST Sun Feb 1 2026

.EARLY THIS MORNING...South winds 10 to 20 knots. Waves calm to
2 feet.
.TODAY...South winds 10 to 20 knots increasing to 15 to 25 knots.
A slight chance of snow in the afternoon. Waves building to 2 to
4 feet.
.TONIGHT...South winds 15 to 25 knots becoming southwest 10 to
20 knots by midnight, then veering west late. Snow likely. Waves
subsiding to calm to 2 feet.
.MONDAY...Northwest winds 15 to 25 knots increasing to 20 to
30 knots. A chance of snow showers. Waves building to 3 to 5 feet
occasionally to 7 feet.
.MONDAY NIGHT...Northwest winds 15 to 25 knots. A chance of snow
showers. Waves 3 to 5 feet occasionally to 7 feet.
.TUESDAY...Northwest winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. Waves subsiding to 1 to 3 feet.
.TUESDAY NIGHT...Northwest winds 10 to 20 knots backing west
after midnight. Waves subsiding to calm to 2 feet.
.WEDNESDAY...West winds 10 to 20 knots. Waves calm to 2 feet.
.THURSDAY...Southwest winds 10 to 20 knots becoming west gales to
35 knots. A chance of snow showers. Waves building to 3 to 5 feet
occasionally to 7 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ266-012100-
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 Feb 1 2026

.EARLY THIS MORNING...South winds 15 to 25 knots. Waves 1 to
3 feet.
.TODAY...South winds 15 to 25 knots increasing to 20 to 30 knots.
Waves building to 4 to 7 feet occasionally to 9 feet.
.TONIGHT...South winds 20 to 30 knots becoming southwest 15 to
25 knots by midnight, then veering west late. A chance of snow in
the evening, then snow likely after midnight. Waves subsiding to
2 to 4 feet.
.MONDAY...Northwest 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.
.MONDAY NIGHT...Northwest winds 20 to 30 knots veering north
after midnight. Heavy freezing spray. A chance of snow showers.
Waves subsiding to 4 to 7 feet occasionally to 9 feet.
.TUESDAY...North winds 15 to 25 knots. Heavy freezing spray in
the morning. A chance of snow showers. Waves subsiding to 2 to
4 feet.
.TUESDAY NIGHT...Northwest winds 10 to 20 knots. Waves subsiding
to calm to 2 feet.
.WEDNESDAY...West winds 10 to 20 knots veering northwest. Waves
building to 2 to 4 feet, then subsiding to 1 to 3 feet.
.THURSDAY...Southwest winds 15 to 25 knots becoming northwest
gales to 35 knots. A chance of snow showers. Freezing spray.
Waves building to 4 to 7 feet occasionally to 9 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ267-012100-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
400 AM EST Sun Feb 1 2026

.EARLY THIS MORNING...South winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...South winds 10 to 20 knots increasing to 15 to 25 knots
by mid afternoon. Waves building to 3 to 5 feet occasionally to
7 feet.
.TONIGHT...South winds 15 to 25 knots veering southwest late. A
chance of snow in the evening, then snow likely after midnight.
Waves building to 3 to 6 feet occasionally to 8 feet, then
subsiding to 2 to 4 feet.
.MONDAY...South winds 15 to 25 knots veering northwest. Snow
showers likely in the morning, then a chance of snow showers in
the afternoon. Freezing spray in the afternoon. Waves building to
5 to 8 feet occasionally to 10 feet.
.MONDAY NIGHT...Northwest winds 15 to 25 knots veering north
after midnight. Freezing spray. A chance of snow showers. Waves
subsiding to 3 to 6 feet occasionally to 8 feet.
.TUESDAY...North winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. Waves subsiding to 1 to 3 feet.
.TUESDAY NIGHT...North winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. Waves subsiding to calm to 2 feet.
.WEDNESDAY...West winds 5 to 15 knots becoming northwest 10 to
20 knots. Waves building to 2 to 4 feet, then subsiding to 1 to
3 feet.
.THURSDAY...Southwest winds 15 to 25 knots becoming west 20 to
30 knots. Snow showers likely. Freezing spray. Waves building to
4 to 7 feet occasionally to 9 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ261-011500-
MAFOR 0110/
Superior West 12440 11530 12537 11627 12720. Waves 1 to 3 feet
building to 3 to 5 feet, then subsiding to 2 to 4 feet today.
Waves 2 to 4 feet subsiding to 1 to 3 feet tonight. Wave heights
are for ice free areas.

Superior North Central 11420 13430 11520 11527 11627 11720. Waves
1 to 3 feet building to 3 to 5 feet today. Waves 3 to 5 feet
tonight.

Superior South Central 11420 14430 11437 11527 11520. Waves 1 to
3 feet building to 3 to 5 feet today. Waves 3 to 5 feet subsiding
to 1 to 3 feet tonight. Wave heights are for ice free areas.

Superior East 11420 13430 12440 11530 11527. Waves 1 to 3 feet
building to 3 to 6 feet today. Waves 4 to 7 feet subsiding to 3
to 6 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