542
FZUS63 KMQT 081500
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1000 AM EST Thu Jan 8 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 29.6 inch low moves from Manitoba to northern Ontario today while
a 29.4 inch low lifts into the Upper Mississippi River Valley. This
low will move through northern Lake Michigan tonight while the low
to the north reaches James Bay. Both press into Quebec Friday as
30.1 inch ridging builds over the Upper Midwest. Friday night
through Saturday, two lows (one coming from Manitoba and another
from the Lower Mississippi Valley) will merge, resulting in a low of
at least 29.8 inches near southern Ontario. This low will lift into
Quebec near 29.6 inches Sunday afternoon as a 30.6 inch high spreads
across the Central Plains. The high extends a 30.1 inch ridge over
the lake Sunday night ahead of a 29.8 inch trough transiting the
lake Monday.


LSZ162-082100-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1000 AM EST Thu Jan 8 2026 /900 AM CST Thu Jan 8 2026/

.REST OF TODAY...Southwest winds 5 to 15 knots veering west by
mid afternoon. Patchy fog late in the morning. Waves calm to
2 feet.
.TONIGHT...North winds 5 to 15 knots increasing to 15 to
25 knots. A slight chance of rain showers in the evening. Waves
building to 2 to 4 feet.
.FRIDAY...North winds 15 to 25 knots becoming northwest 5 to
15 knots by late morning, then backing west by mid afternoon.
Waves subsiding to calm to 2 feet.
.FRIDAY NIGHT...Southwest winds 5 to 15 knots backing south after
midnight. A slight chance of snow showers after midnight. Waves
calm to 2 feet.
.SATURDAY...Northwest winds 10 to 20 knots becoming north 15 to
25 knots in the afternoon. A chance of snow showers. Waves
building to 3 to 5 feet occasionally to 7 feet.
.SATURDAY NIGHT...North winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. Waves building to 3 to 6 feet
occasionally to 8 feet.
.SUNDAY...West winds 15 to 25 knots becoming southwest 20 to
30 knots. Waves subsiding to 1 to 3 feet, then building to 3 to
5 feet occasionally to 7 feet.
.MONDAY...West winds 15 to 25 knots diminishing to 10 to
20 knots. Waves subsiding to calm to 2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ263-082100-
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 Thu Jan 8 2026

.REST OF TODAY...Southwest winds 5 to 15 knots veering west by
mid afternoon. Patchy fog late in the morning. Waves calm to
2 feet.
.TONIGHT...North winds 5 to 15 knots increasing to 20 to
30 knots. Patchy fog in the evening. A slight chance of rain and
snow showers. Waves building to 3 to 6 feet occasionally to
8 feet.
.FRIDAY...North winds 20 to 30 knots becoming northwest 15 to
25 knots by late morning, then becoming west 5 to 15 knots by mid
afternoon. Waves building to 4 to 7 feet occasionally to 9 feet,
then subsiding to 1 to 3 feet.
.FRIDAY NIGHT...Southwest winds 5 to 15 knots backing south after
midnight. Waves subsiding to calm to 2 feet.
.SATURDAY...Southeast winds 10 to 20 knots becoming northeast
20 to 30 knots in the afternoon. A chance of snow showers. 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. Freezing spray. Waves building to 7 to
10 feet occasionally to 13 feet, then subsiding to 5 to 8 feet
occasionally to 10 feet.
.SUNDAY...West winds 20 to 30 knots. Waves subsiding to 1 to
3 feet, then building to 5 to 8 feet occasionally to 10 feet.
.MONDAY...West winds 20 to 30 knots diminishing to 10 to
20 knots. Waves subsiding to 1 to 3 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ264-082100-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1000 AM EST Thu Jan 8 2026

.REST OF TODAY...Southwest winds 5 to 15 knots veering west by
mid afternoon. Patchy fog late in the morning. Waves calm to
2 feet.
.TONIGHT...North winds 5 to 15 knots increasing to 20 to
30 knots. Patchy fog. A chance of rain showers in the evening.
Snow showers likely with pockets of rain showers after midnight.
Waves building to 4 to 7 feet occasionally to 9 feet.
.FRIDAY...North winds to 30 knots with a few gale force gusts to
35 knots possible diminishing to 20 to 30 knots by late morning,
then becoming northwest 15 to 25 knots by mid afternoon. Waves
building to 5 to 8 feet occasionally to 10 feet, then subsiding
to 2 to 4 feet.
.FRIDAY NIGHT...Northwest winds 5 to 15 knots backing southeast
after midnight. Waves subsiding to calm to 2 feet.
.SATURDAY...Southeast winds 10 to 20 knots becoming east 20 to
30 knots in the afternoon. A chance of snow showers in the
afternoon. Waves building to 3 to 6 feet occasionally to 8 feet.
.SATURDAY NIGHT...Northeast gales to 35 knots backing north after
midnight. Freezing spray. Waves building to 7 to 10 feet
occasionally to 13 feet, then subsiding to 5 to 8 feet
occasionally to 10 feet.
.SUNDAY...North winds 20 to 30 knots backing west. Freezing
spray. Waves subsiding to 2 to 4 feet, then building to 5 to
8 feet occasionally to 10 feet.
.MONDAY...West winds 20 to 30 knots diminishing to 15 to
25 knots. Waves subsiding to 1 to 3 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ265-082100-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1000 AM EST Thu Jan 8 2026

.REST OF TODAY...South winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. Patchy fog late in the morning. Waves
calm to 2 feet.
.TONIGHT...North winds 5 to 15 knots increasing to 20 to
30 knots. Patchy dense fog. Rain showers, possibly mixed with
snow in the evening. Snow showers, possibly mixed with rain after
midnight. Waves building to 3 to 6 feet occasionally to 8 feet.
.FRIDAY...North winds to 30 knots with a few gale force gusts to
40 knots possible becoming northwest to 30 knots with a few gale
force gusts to 35 knots possible by late morning, then
diminishing to 15 to 25 knots by mid afternoon. Patchy fog in the
morning. A slight chance of rain and snow showers in the morning.
Waves building to 7 to 10 feet occasionally to 13 feet, then
subsiding to 3 to 6 feet occasionally to 8 feet.
.FRIDAY NIGHT...Northwest winds 5 to 15 knots backing southeast
after midnight. Waves subsiding to calm to 2 feet.
.SATURDAY...Southeast winds 10 to 20 knots becoming east 20 to
30 knots in the afternoon. A chance of snow showers. Waves
building to 3 to 5 feet occasionally to 7 feet.
.SATURDAY NIGHT...Northeast gales to 35 knots backing north after
midnight. A chance of snow showers. Freezing spray after
midnight. Waves building to 7 to 10 feet occasionally to 13 feet.
.SUNDAY...North winds 20 to 30 knots backing west. Freezing
spray. Waves subsiding to 2 to 4 feet, then building to 3 to
5 feet occasionally to 7 feet.
.MONDAY...West winds 15 to 25 knots. Waves subsiding to calm to
2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ266-082100-
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 Thu Jan 8 2026

.REST OF TODAY...South winds 15 to 25 knots diminishing to 10 to
20 knots. Patchy fog. Waves 2 to 4 feet subsiding to calm to
2 feet.
.TONIGHT...South winds 5 to 15 knots becoming northeast 10 to
20 knots by midnight, then becoming north 20 to 30 knots late.
Patchy fog. Rain showers. Snow showers after midnight. Waves
building to 3 to 6 feet occasionally to 8 feet.
.FRIDAY...North winds to 30 knots with a few gale force gusts to
40 knots possible becoming northwest 20 to 30 knots by mid
afternoon. Patchy fog in the morning. Snow showers, possibly
mixed with rain 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 becoming southeast
5 to 15 knots after midnight. Waves subsiding to calm to 2 feet.
.SATURDAY...Southeast winds 10 to 20 knots becoming east 20 to
30 knots in the afternoon. A chance of snow showers. Waves
building to 3 to 6 feet occasionally to 8 feet.
.SATURDAY NIGHT...Northeast gales to 35 knots. A chance of snow
showers. Freezing spray after midnight. Waves building to 7 to
11 feet occasionally to 14 feet.
.SUNDAY...North winds 20 to 30 knots backing west. Freezing
spray. Waves subsiding to 3 to 5 feet occasionally to 7 feet,
then building to 5 to 8 feet occasionally to 10 feet.
.MONDAY...West winds 15 to 25 knots. Waves subsiding to 2 to
4 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ267-082100-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1000 AM EST Thu Jan 8 2026

.REST OF TODAY...South winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. Waves 1 to 3 feet subsiding to calm to
2 feet.
.TONIGHT...Southeast winds 10 to 20 knots backing east by
midnight, then becoming northeast 15 to 25 knots late. Patchy
fog. Rain showers. Snow showers after midnight. Waves building to
2 to 4 feet.
.FRIDAY...North winds 20 to 30 knots increasing to 30 knots with
a few gale force gusts to 35 knots possible by late morning, then
becoming northwest 20 to 30 knots by mid afternoon. Patchy fog in
the morning. Snow showers, possibly mixed with rain in the
morning. Waves building to 7 to 10 feet occasionally to 13 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 calm to 2 feet.
.SATURDAY...Southeast winds 15 to 25 knots becoming east 20 to
30 knots in the afternoon. A chance of snow showers in the
afternoon. Waves building to 3 to 5 feet occasionally to 7 feet.
.SATURDAY NIGHT...Northeast gales to 35 knots. A chance of snow
showers. Freezing spray after midnight. Waves building to 6 to
9 feet occasionally to 11 feet.
.SUNDAY...North winds 20 to 30 knots becoming west 15 to
25 knots. Freezing spray. Waves subsiding to 2 to 4 feet, then
building to 4 to 7 feet occasionally to 9 feet.
.MONDAY...Southwest winds 15 to 25 knots veering west. Waves
subsiding to 3 to 5 feet occasionally to 7 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ261-082100-
MAFOR 0816/
Superior West 11500 11600 11700 11810 11130 12830 11820. Waves 1
foot or less this afternoon. Waves 2 feet or less building to 3
to 5 feet tonight. Waves 3 to 5 feet subsiding to 2 to 4 feet
Friday morning.

Superior North Central 11510 11500 11700 11810 12837 11857 11850.
Waves 1 to 2 feet this afternoon. Waves 1 to 2 feet building to 4
to 6 feet tonight. Waves 5 to 8 feet Friday morning.

Superior South Central 11420 11510 11506 11806 11826 19824 11837
19834 11857 11850. Waves 2 feet or less this afternoon. Waves 2
feet or less building to 3 to 5 feet tonight. Waves 6 to 10 feet
Friday morning.

Superior East 12420 11416 11316 11216 11136 11847 11857. Waves 2
to 4 feet this afternoon. Waves 1 to 3 feet building to 2 to 4
feet tonight. Waves 3 to 6 feet building to 5 to 8 feet Friday
morning.

$$

WFO MQT

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