147
FZUS63 KMQT 092101
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
400 PM EST Mon Feb 9 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...

Lake Superior is currently between a 30.5 inch high over the Lower
Great Lakes and a 29.7 inch low over Lake Winnipeg. Today through
Tuesday afternoon, this low will slowly push just north of Lake
Superior, dragging a 29.8 inch trough over the lake as it
progresses. As the low shifts to the Ontario/Quebec line Tuesday
night, high pressure of 30.3 inches builds over the Northern Plains.
This high gradually settles over the Great Lakes by Thursday
morning, building to 30.4 inches. Friday, the high moves to the
southern portion of the Great Lakes while a 29.9 inch low moves
across northern Ontario. This weekend, high pressure resumes over
the Great Lakes as a whole before another clipper low pressure moves
across Manitoba and Ontario while a Colorado Low develops.


LSZ162-100900-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
400 PM EST Mon Feb 9 2026 /300 PM CST Mon Feb 9 2026/

.LATE THIS AFTERNOON...Southwest winds 10 to 20 knots. Waves calm
to 2 feet.
.TONIGHT...Southwest winds 10 to 20 knots veering west by
midnight. A slight chance of rain and snow showers in the
evening. Waves calm to 2 feet.
.TUESDAY...West winds 15 to 25 knots increasing to 20 to 30 knots
by late morning, then veering northwest by mid afternoon. Waves
building to 1 to 3 feet, then subsiding to calm to 2 feet.
.TUESDAY NIGHT...Northwest winds 15 to 25 knots diminishing to
10 to 20 knots late. Waves calm to 2 feet.
.WEDNESDAY...Northwest winds 5 to 15 knots backing west in the
afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Northwest winds less than 10 knots veering
north after midnight. Waves calm to 2 feet.
.THURSDAY...East winds less than 10 knots becoming south 5 to
15 knots in the afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Southwest winds 5 to 15 knots. Waves calm to
2 feet.
.FRIDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.
.SATURDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ263-100900-
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 PM EST Mon Feb 9 2026

.LATE THIS AFTERNOON...Southwest winds 10 to 20 knots. Waves 1 to
3 feet.
.TONIGHT...Southwest winds 5 to 15 knots becoming west 10 to
20 knots late. A chance of snow showers. Waves subsiding to calm
to 2 feet, then building to 1 to 3 feet.
.TUESDAY...West winds 15 to 25 knots increasing to 20 to 30 knots
by late morning, then veering northwest by mid afternoon. A
chance of snow showers. Waves building to 3 to 6 feet
occasionally to 8 feet.
.TUESDAY NIGHT...Northwest winds 15 to 25 knots. A slight chance
of snow showers in the evening. Waves subsiding to 2 to 4 feet.
.WEDNESDAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. Waves subsiding to calm to 2 feet.
.WEDNESDAY NIGHT...Northwest winds 5 to 15 knots diminishing to
less than 10 knots after midnight. Waves calm to 2 feet.
.THURSDAY...South winds less than 10 knots. Waves calm to 2 feet.
.THURSDAY NIGHT...Southwest winds 5 to 15 knots. Waves calm to
2 feet.
.FRIDAY...Southwest winds 10 to 20 knots diminishing to 5 to
15 knots. Waves calm to 2 feet.
.SATURDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ264-100900-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
400 PM EST Mon Feb 9 2026

.LATE THIS AFTERNOON...Southwest winds 10 to 20 knots. Waves 3 to
5 feet occasionally to 7 feet subsiding to 2 to 4 feet.
.TONIGHT...Southwest winds 5 to 15 knots becoming west 10 to
20 knots late. A slight chance of freezing rain and snow showers
after midnight. Waves subsiding to calm to 2 feet, then building
to 1 to 3 feet.
.TUESDAY...West winds 15 to 25 knots increasing to 20 to 30 knots
by late morning, then veering northwest by mid afternoon. A
chance of snow showers. Freezing spray in the afternoon. Waves
building to 5 to 8 feet occasionally to 10 feet.
.TUESDAY NIGHT...Northwest winds to 30 knots with a few gale
force gusts to 35 knots possible diminishing to 20 to 30 knots by
midnight. A slight chance of snow showers in the evening.
Freezing spray. Waves subsiding to 4 to 7 feet occasionally to
9 feet.
.WEDNESDAY...Northwest winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. Waves subsiding to 1 to 3 feet.
.WEDNESDAY NIGHT...North winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. Waves subsiding to calm to 2 feet.
.THURSDAY...Northwest winds less than 10 knots backing southwest
in the afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Southwest winds 5 to 15 knots. Waves calm to
2 feet.
.FRIDAY...West winds 10 to 20 knots diminishing to 5 to 15 knots.
Waves calm to 2 feet.
.SATURDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ265-100900-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
400 PM EST Mon Feb 9 2026

...GALE WATCH IN EFFECT FROM TUESDAY MORNING THROUGH LATE TUESDAY
NIGHT...

.LATE THIS AFTERNOON...South winds 10 to 20 knots. A slight
chance of freezing rain and snow showers. Waves calm to 2 feet.
.TONIGHT...South winds 10 to 20 knots veering west late. A chance
of snow showers. A slight chance of freezing rain after midnight.
Waves calm to 2 feet.
.TUESDAY...West winds 15 to 25 knots increasing to gales to
40 knots. A slight chance of snow showers. Waves building to 2 to
4 feet.
.TUESDAY NIGHT...Northwest gales to 40 knots. A slight chance of
snow showers in the evening. Waves building to 3 to 6 feet
occasionally to 8 feet.
.WEDNESDAY...Northwest winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon. Waves subsiding to 2 to 4 feet.
.WEDNESDAY NIGHT...Northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. Waves subsiding to calm to 2 feet.
.THURSDAY...West winds 5 to 15 knots backing south in the
afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...South winds 5 to 15 knots becoming southwest
10 to 20 knots after midnight. Waves calm to 2 feet.
.FRIDAY...West winds 10 to 20 knots. Waves calm to 2 feet.
.SATURDAY...Southwest winds 10 to 20 knots backing south. Waves
calm to 2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ266-100900-
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 PM EST Mon Feb 9 2026

...GALE WATCH IN EFFECT FROM TUESDAY MORNING THROUGH LATE TUESDAY
NIGHT...

.LATE THIS AFTERNOON...South winds 15 to 25 knots. A slight
chance of freezing rain and snow showers. Waves 3 to 6 feet
occasionally to 8 feet.
.TONIGHT...South winds 15 to 25 knots veering southwest by
midnight, then becoming west 10 to 20 knots late. A chance of
snow showers. Waves subsiding to 1 to 3 feet.
.TUESDAY...West winds 15 to 25 knots becoming northwest gales to
35 knots. A chance of snow showers. Freezing spray in the
afternoon. Waves building to 9 to 12 feet occasionally to
15 feet.
.TUESDAY NIGHT...Northwest gales to 40 knots. Freezing spray. A
chance of snow showers. Waves subsiding to 8 to 11 feet
occasionally to 14 feet.
.WEDNESDAY...Northwest winds 20 to 30 knots. A slight chance of
snow showers in the morning. Freezing spray. Waves subsiding to
4 to 7 feet occasionally to 9 feet.
.WEDNESDAY NIGHT...Northwest winds 15 to 25 knots becoming north
5 to 15 knots after midnight. Waves subsiding to 1 to 3 feet.
.THURSDAY...Northwest winds 5 to 15 knots backing west in the
afternoon. Waves subsiding to calm to 2 feet.
.THURSDAY NIGHT...Southwest winds 5 to 15 knots increasing to
10 to 20 knots after midnight. Waves calm to 2 feet.
.FRIDAY...West winds 10 to 20 knots. Waves building to 1 to
3 feet, then subsiding to calm to 2 feet.
.SATURDAY...South winds 10 to 20 knots. Waves building to 1 to
3 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ267-100900-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
400 PM EST Mon Feb 9 2026

...GALE WATCH IN EFFECT FROM TUESDAY MORNING THROUGH LATE TUESDAY
NIGHT...

.LATE THIS AFTERNOON...South winds 20 to 30 knots. A chance of
snow showers. Waves 3 to 6 feet occasionally to 8 feet.
.TONIGHT...South winds 15 to 25 knots diminishing to 10 to
20 knots late. A chance of snow showers in the evening, then snow
showers after midnight. Waves subsiding to 1 to 3 feet.
.TUESDAY...West winds 10 to 20 knots increasing to 20 to 30 knots
by late morning, then becoming northwest gales to 35 knots by mid
afternoon. Snow showers in the morning, then a chance of snow
showers in the afternoon. Waves subsiding to calm to 2 feet, then
building to 9 to 12 feet occasionally to 15 feet.
.TUESDAY NIGHT...Northwest gales to 35 knots diminishing to 20 to
30 knots late. A chance of snow showers. Freezing spray after
midnight. Waves subsiding to 7 to 10 feet occasionally to
13 feet.
.WEDNESDAY...North winds 20 to 30 knots becoming northwest 15 to
25 knots in the afternoon. Freezing spray. Waves subsiding to
3 to 6 feet occasionally to 8 feet.
.WEDNESDAY NIGHT...North winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. Waves subsiding to calm to 2 feet.
.THURSDAY...North winds 5 to 15 knots backing northwest in the
afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Southwest winds 5 to 15 knots. Waves calm to
2 feet.
.FRIDAY...Southwest winds 5 to 15 knots veering west. Waves
building to 1 to 3 feet, then subsiding to calm to 2 feet.
.SATURDAY...South 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.

Note, wave height forecasts are for ice free areas.

$$

LSZ261-100300-
MAFOR 0922/
Superior West 11520 11510 11610 12620 11630 11640 11740. Waves
omitted due to the lake being mostly ice covered.

Superior North Central 12520 11510 12620 11730 12741. A chance of
snow showers Tuesday. Waves 3 to 5 feet subsiding to 1 to 3 feet
tonight. Waves 2 to 4 feet building to 4 to 7 feet Tuesday.

Superior South Central 11430 11420 11520 11510 11620 11640 11641
11651. A chance of snow showers overnight and Tuesday. Waves 1 to
3 feet tonight. Waves 1 to 3 feet building to 5 to 8 feet
Tuesday. Wave heights are for ice free areas.

Superior East 12430 11520 12527 11630 11740 11750. Waves 3 to 6
feet subsiding to 2 to 4 feet tonight. Waves 1 to 3 feet building
to 6 to 10 feet Tuesday.

$$

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