322
FZUS63 KMQT 072101
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
400 PM EST Wed Jan 7 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...

Weak ridging of 29.7 inches over Lake Superior this afternoon will
shift east of the lake through this evening as 29.6 inch low
pressure broadly organizes over the Plains and 30.0 inch high
pressure resides over the Ohio River Valley. High pressure will
slide east tonight and build to 30.2 inches over the Mid Atlantic
states by Thursday morning while a 29.6 inch low moves from Manitoba
to northern Ontario. Meanwhile, a developing 29.4 inch Colorado Low
moves to the Upper Mississippi Valley by Thursday evening. The low
reaches northern Lower Michigan early Friday morning and then Quebec
by the evening hours with broad 30.6 inch high pressure building
over the Rockies in its wake. Friday night through Saturday, a low
will deepen from 29.9 to 29.7 inches as it moves from the Lower
Mississippi Valley to the Lower Great Lakes, reaching southern
Quebec Sunday morning as 30.5 inch high pressure overspreads the
Plains. The high slides south of the Great Lakes on Monday while a
29.6 inch low moves into northern Ontario.


LSZ162-080900-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
400 PM EST Wed Jan 7 2026 /300 PM CST Wed Jan 7 2026/

.LATE THIS AFTERNOON...Southwest winds 10 to 20 knots. Waves 2 to
4 feet subsiding to 1 to 3 feet.
.TONIGHT...Southwest winds 10 to 20 knots diminishing to 5 to
15 knots late. Patchy fog after midnight. Waves subsiding to calm
to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots veering west by mid
afternoon. Patchy fog in the morning. Waves calm to 2 feet.
.THURSDAY NIGHT...Northeast winds 5 to 15 knots becoming north
15 to 25 knots by midnight, then diminishing to 10 to 20 knots
late. A slight chance of rain. A slight chance of snow after
midnight. Waves building to 2 to 4 feet.
.FRIDAY...North winds 10 to 20 knots becoming west 5 to 15 knots
in the afternoon. Waves subsiding to calm to 2 feet.
.FRIDAY NIGHT...Southwest winds 5 to 15 knots backing south after
midnight. Waves calm to 2 feet.
.SATURDAY...Northeast winds 10 to 20 knots becoming north 20 to
30 knots in the afternoon. A chance of snow. Waves building to
3 to 6 feet occasionally to 8 feet.
.SATURDAY NIGHT...North gales to 35 knots diminishing to 20 to
30 knots after midnight. Waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet.
.SUNDAY...West winds 10 to 20 knots increasing to 15 to 25 knots.
Waves subsiding to calm to 2 feet, then building to 2 to 4 feet.
.MONDAY...West winds 10 to 20 knots. Waves subsiding to calm to
2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ263-080900-
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 Wed Jan 7 2026

.LATE THIS AFTERNOON...Southwest winds 10 to 20 knots. Waves 2 to
4 feet.
.TONIGHT...Southwest winds 5 to 15 knots. Patchy fog after
midnight. Waves subsiding to calm to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots veering west by mid
afternoon. Patchy fog in the morning. Waves calm to 2 feet.
.THURSDAY NIGHT...Northeast winds 5 to 15 knots becoming north
15 to 25 knots by midnight. A chance of rain. A slight chance of
snow after midnight. Waves building to 4 to 7 feet occasionally
to 9 feet.
.FRIDAY...North winds 15 to 25 knots becoming northwest 10 to
20 knots in the afternoon. Waves subsiding to 1 to 3 feet.
.FRIDAY NIGHT...West winds 5 to 15 knots backing southeast after
midnight. Waves subsiding to calm to 2 feet.
.SATURDAY...East winds 10 to 20 knots becoming northeast gales to
35 knots in the afternoon. A chance of snow. Waves building to
5 to 8 feet occasionally to 10 feet.
.SATURDAY NIGHT...North gales to 35 knots. A chance of snow in
the evening. Freezing spray. Waves building to 8 to 11 feet
occasionally to 14 feet, then subsiding to 6 to 9 feet
occasionally to 11 feet.
.SUNDAY...North winds 15 to 25 knots becoming west 20 to
30 knots. Waves subsiding to 2 to 4 feet, then building to 4 to
7 feet occasionally to 9 feet.
.MONDAY...West winds 15 to 25 knots. Waves subsiding to 2 to
4 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ264-080900-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
400 PM EST Wed Jan 7 2026

.LATE THIS AFTERNOON...Southwest winds 10 to 20 knots. Waves 2 to
4 feet.
.TONIGHT...Southwest winds 10 to 20 knots diminishing to 5 to
15 knots by midnight. Waves subsiding to calm to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots veering west by mid
afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...North winds 5 to 15 knots increasing to 15 to
25 knots by midnight. A chance of rain. A chance of snow after
midnight. Waves building to 4 to 7 feet occasionally to 9 feet.
.FRIDAY...North winds 15 to 25 knots backing northwest in the
afternoon. Waves building to 5 to 8 feet occasionally to 10 feet,
then subsiding to 3 to 5 feet occasionally to 7 feet.
.FRIDAY NIGHT...North winds 5 to 15 knots veering east after
midnight. Waves subsiding to calm to 2 feet, then building to
1 to 3 feet.
.SATURDAY...East winds 10 to 20 knots becoming northeast gales to
35 knots in the afternoon. A chance of snow. Waves building to
5 to 8 feet occasionally to 10 feet.
.SATURDAY NIGHT...Northeast gales to 40 knots backing north after
midnight. Freezing spray. Waves building to 8 to 11 feet
occasionally to 14 feet, then subsiding to 6 to 9 feet
occasionally to 11 feet.
.SUNDAY...North winds 20 to 30 knots backing west. Freezing
spray. Waves subsiding to 2 to 4 feet, then building to 4 to
7 feet occasionally to 9 feet.
.MONDAY...West winds 20 to 30 knots diminishing to 15 to
25 knots. Waves subsiding to 2 to 4 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ265-080900-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
400 PM EST Wed Jan 7 2026

.LATE THIS AFTERNOON...South winds 10 to 20 knots. Waves calm to
2 feet.
.TONIGHT...South winds 10 to 20 knots diminishing to 5 to
15 knots by midnight, then veering southwest late. Waves calm to
2 feet.
.THURSDAY...Southwest winds 5 to 15 knots increasing to 10 to
20 knots by late morning, then becoming west 5 to 15 knots by mid
afternoon. Patchy fog in the morning. Waves calm to 2 feet.
.THURSDAY NIGHT...North winds 5 to 15 knots increasing to 20 to
30 knots. A chance of rain. Snow likely after midnight. Waves
building to 3 to 6 feet occasionally to 8 feet.
.FRIDAY...North winds 20 to 30 knots becoming northwest 15 to
25 knots in the afternoon. A slight chance of rain and snow,
possibly mixed with freezing rain in the morning. Waves building
to 7 to 10 feet occasionally to 13 feet, then subsiding to 4 to
7 feet occasionally to 9 feet.
.FRIDAY NIGHT...Northwest winds 10 to 20 knots backing southeast
after midnight. Waves subsiding to 1 to 3 feet.
.SATURDAY...East winds 15 to 25 knots becoming northeast 20 to
30 knots in the afternoon. A chance of snow. Waves building to
4 to 7 feet occasionally to 9 feet.
.SATURDAY NIGHT...Northeast gales to 40 knots backing north after
midnight. A chance of snow. Freezing spray after midnight. Waves
building to 9 to 12 feet occasionally to 15 feet.
.SUNDAY...North gales to 35 knots becoming west 20 to 30 knots.
Freezing spray. Waves subsiding to 2 to 4 feet.
.MONDAY...West winds 20 to 30 knots. Waves subsiding to 1 to
3 feet, then building to 2 to 4 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ266-080900-
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 Wed Jan 7 2026

.LATE THIS AFTERNOON...South winds 10 to 20 knots. Waves 1 to
3 feet.
.TONIGHT...South winds 10 to 20 knots. Waves building to 2 to
4 feet.
.THURSDAY...South winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. Patchy fog in the morning. Waves
subsiding to calm to 2 feet.
.THURSDAY NIGHT...Southeast winds 5 to 15 knots becoming
northeast 10 to 20 knots by midnight, then becoming north 20 to
30 knots late. Rain likely. A slight chance of snow after
midnight. Waves building to 3 to 6 feet occasionally to 8 feet.
.FRIDAY...North gales to 35 knots becoming northwest 20 to
30 knots in the afternoon. A chance of rain and snow in the
morning. Waves building to 9 to 12 feet occasionally to 15 feet,
then subsiding to 5 to 8 feet occasionally to 10 feet.
.FRIDAY NIGHT...North winds 10 to 20 knots veering east after
midnight. Waves subsiding to 1 to 3 feet.
.SATURDAY...East winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. A chance of snow. Waves building to
4 to 7 feet occasionally to 9 feet.
.SATURDAY NIGHT...Northeast gales to 40 knots backing north after
midnight. Freezing spray. A chance of snow. Waves building to
9 to 12 feet occasionally to 15 feet.
.SUNDAY...North gales to 35 knots becoming west 15 to 25 knots.
Freezing spray. Waves subsiding to 3 to 5 feet occasionally to
7 feet, then building to 4 to 7 feet occasionally to 9 feet.
.MONDAY...West 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.

$$

LSZ267-080900-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
400 PM EST Wed Jan 7 2026

.LATE THIS AFTERNOON...South winds 10 to 20 knots. Waves 1 to
3 feet.
.TONIGHT...South winds 10 to 20 knots. Patchy fog. Waves building
to 2 to 4 feet, then subsiding to 1 to 3 feet.
.THURSDAY...South winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. Patchy fog in the morning. Waves 1 to
3 feet.
.THURSDAY NIGHT...Southeast winds 10 to 20 knots backing east by
midnight, then becoming northeast 15 to 25 knots late. Rain. A
slight chance of snow after midnight. Waves subsiding to calm to
2 feet, then building to 2 to 4 feet.
.FRIDAY...North winds 20 to 30 knots backing northwest in the
afternoon. A chance of snow, possibly mixed with rain in the
morning. Waves building to 5 to 9 feet occasionally to 11 feet.
.FRIDAY NIGHT...North winds 10 to 20 knots veering east after
midnight. Waves subsiding to 1 to 3 feet.
.SATURDAY...East winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. A chance of snow. Waves building to
3 to 6 feet occasionally to 8 feet.
.SATURDAY NIGHT...Northeast gales to 40 knots. Snow likely in the
evening, then a chance of snow after midnight. Freezing spray
after midnight. Waves building to 7 to 10 feet occasionally to
13 feet.
.SUNDAY...North gales to 35 knots becoming west 15 to 25 knots.
Freezing spray. Waves subsiding to 3 to 6 feet occasionally to
8 feet.
.MONDAY...Southwest winds 15 to 25 knots veering west. 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.

$$

LSZ261-080300-
MAFOR 0722/
Superior West 11520 14510 11510 11500 11600. Waves 1 to 3 feet
tonight. Waves 2 feet or less Thursday.

Superior North Central 12520 15510. Waves 2 to 4 feet subsiding
to 1 to 3 feet tonight. Waves 1 to 2 feet Thursday.

Superior South Central 12410 12420 11520 12410 11510. Waves 1 to
3 feet.

Superior East 11420 11420 19424 13420 11423 12420. Waves 2 to 4
feet.

$$

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