789
FZUS63 KMQT 060900
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
400 AM EST Fri Nov 6 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...

30.2 inch high pressure builds over Lake Superior today from the
northwest. High pressure weakens to 30.0 inches by Saturday night as
the high splits toward Quebec and the Mid-Mississippi River Valley.
A 29.5 clipper low crosses far northern Ontario Saturday night and
Sunday morning, reaching Quebec Sunday night. This extends a 29.7
inch trough over the lake Saturday night into Sunday morning. Weak
30.0 inch ridging passes over the Great Lakes Monday ahead of
another clipper system at 29.7 inches Monday night into Tuesday.
High pressure of at least 30.1 inches returns by Wednesday night.



LSZ162-062100-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
400 AM EST Fri Nov 6 2026 /300 AM CST Fri Nov 6 2026/

.EARLY THIS MORNING...North winds 5 to 15 knots. Waves 2 to
4 feet.
.TODAY...North winds 5 to 15 knots diminishing to less than
10 knots by late morning, then becoming west 5 to 15 knots by mid
afternoon. Waves subsiding to calm to 2 feet.
.TONIGHT...Southwest winds 5 to 15 knots increasing to 10 to
20 knots by midnight, then veering west late. Waves calm to
2 feet.
.SATURDAY...Southwest winds 10 to 20 knots increasing to 15 to
25 knots. Waves building to 2 to 4 feet.
.SATURDAY NIGHT...Southwest winds 20 to 30 knots becoming west
15 to 25 knots after midnight. Waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 2 to 4 feet.
.SUNDAY...West winds 15 to 25 knots diminishing to 10 to 20 knots
in the afternoon. Waves subsiding to 1 to 3 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots backing southwest after
midnight. Waves subsiding to calm to 2 feet.
.MONDAY...Southwest winds 10 to 20 knots becoming west 15 to
25 knots. Waves building to 2 to 4 feet.
.TUESDAY...West winds 10 to 20 knots becoming northwest 5 to
15 knots. Waves subsiding to calm to 2 feet.

$$

LSZ263-062100-
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 Fri Nov 6 2026

.EARLY THIS MORNING...North winds 10 to 20 knots. Waves 3 to
5 feet occasionally to 7 feet.
.TODAY...North winds 10 to 20 knots diminishing to less than
10 knots. Waves subsiding to calm to 2 feet.
.TONIGHT...West winds 5 to 15 knots backing southwest by
midnight, then veering west late. Waves calm to 2 feet.
.SATURDAY...Southwest winds 5 to 15 knots increasing to 15 to
25 knots. Waves building to 3 to 5 feet occasionally to 7 feet.
.SATURDAY NIGHT...Southwest winds 20 to 30 knots veering west
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 15 to 25 knots. Waves subsiding to 2 to
4 feet.
.SUNDAY NIGHT...Northwest winds 10 to 20 knots becoming southwest
5 to 15 knots after midnight. Waves subsiding to calm to 2 feet.
.MONDAY...Southwest winds 15 to 25 knots veering west. Waves
building to 3 to 6 feet occasionally to 8 feet.
.TUESDAY...West winds 15 to 25 knots becoming northwest 10 to
20 knots. Waves subsiding to calm to 2 feet.

$$

LSZ264-062100-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
400 AM EST Fri Nov 6 2026

.EARLY THIS MORNING...North winds 15 to 25 knots. Waves 3 to
6 feet occasionally to 8 feet.
.TODAY...North winds 10 to 20 knots diminishing to 5 to 15 knots
by mid afternoon. Waves subsiding to calm to 2 feet.
.TONIGHT...North winds 5 to 15 knots backing west by midnight.
Waves calm to 2 feet.
.SATURDAY...Southwest winds 5 to 15 knots increasing to 10 to
20 knots. Waves building to 2 to 4 feet.
.SATURDAY NIGHT...Southwest winds 20 to 30 knots veering west
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 gales to 35 knots veering northwest in the
afternoon. Waves building to 4 to 7 feet occasionally to 9 feet,
then subsiding to 3 to 5 feet occasionally to 7 feet.
.SUNDAY NIGHT...Northwest winds 10 to 20 knots becoming west 5 to
15 knots after midnight. Waves subsiding to calm to 2 feet.
.MONDAY...Southwest winds 15 to 25 knots veering west. Waves
building to 3 to 6 feet occasionally to 8 feet.
.TUESDAY...West winds 20 to 30 knots becoming north 10 to
20 knots. Waves subsiding to 1 to 3 feet.

$$

LSZ265-062100-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
400 AM EST Fri Nov 6 2026

.EARLY THIS MORNING...North winds to 30 knots with a few gale
force gusts to 35 knots possible. A slight chance of rain
showers. Waves 6 to 9 feet occasionally to 11 feet.
.TODAY...North winds 20 to 30 knots diminishing to 15 to
25 knots. A slight chance of rain showers in the morning. Waves
subsiding to 2 to 4 feet.
.TONIGHT...North winds 5 to 15 knots backing northwest by
midnight, then becoming west 10 to 20 knots late. Waves subsiding
to calm to 2 feet.
.SATURDAY...West winds 5 to 15 knots backing southwest. Waves
calm to 2 feet.
.SATURDAY NIGHT...Southwest winds 15 to 25 knots becoming west
gales to 35 knots after midnight. Waves building to 3 to 5 feet
occasionally to 7 feet.
.SUNDAY...West gales to 40 knots veering northwest in the
afternoon. Waves building to 5 to 8 feet occasionally to 10 feet,
then subsiding to 3 to 6 feet occasionally to 8 feet.
.SUNDAY NIGHT...Northwest winds 20 to 30 knots becoming west
10 to 20 knots after midnight. Waves subsiding to calm to 2 feet.
.MONDAY...Southwest winds 15 to 25 knots becoming west gales to
35 knots. Waves building to 3 to 6 feet occasionally to 8 feet.
.TUESDAY...West gales to 35 knots becoming northwest 15 to
25 knots. Waves building to 4 to 7 feet occasionally to 9 feet,
then subsiding to 1 to 3 feet.

$$

LSZ266-062100-
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 Fri Nov 6 2026

.EARLY THIS MORNING...North winds to 30 knots with a few gale
force gusts to 35 knots possible. A slight chance of rain
showers. Waves 6 to 9 feet occasionally to 11 feet.
.TODAY...North winds 20 to 30 knots diminishing to 15 to 25 knots
by mid afternoon. A slight chance of rain showers in the morning.
Waves subsiding to 2 to 4 feet.
.TONIGHT...North winds 10 to 20 knots diminishing to 5 to
15 knots by midnight, then backing northwest late. Waves
subsiding to calm to 2 feet.
.SATURDAY...West winds 5 to 15 knots backing southwest. Waves
building to 1 to 3 feet.
.SATURDAY NIGHT...Southwest winds 15 to 25 knots becoming west
gales to 35 knots after midnight. Waves building to 3 to 6 feet
occasionally to 8 feet.
.SUNDAY...West gales to 40 knots veering northwest in the
afternoon. Waves building to 7 to 10 feet occasionally to
13 feet, then subsiding to 5 to 8 feet occasionally to 10 feet.
.SUNDAY NIGHT...Northwest winds 20 to 30 knots diminishing to
10 to 20 knots after midnight. Waves subsiding to 1 to 3 feet.
.MONDAY...South winds 15 to 25 knots becoming west gales to
35 knots. Waves subsiding to calm to 2 feet, then building to
5 to 8 feet occasionally to 10 feet.
.TUESDAY...West gales to 35 knots becoming north 15 to 25 knots.
Waves building to 6 to 9 feet occasionally to 11 feet, then
subsiding to 2 to 4 feet.

$$

LSZ267-062100-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
400 AM EST Fri Nov 6 2026

...GALE WARNING IN EFFECT UNTIL 7 AM EST THIS MORNING...

.EARLY THIS MORNING...North gales to 35 knots. Rain showers
likely. Waves 6 to 10 feet occasionally to 13 feet.
.TODAY...North gales to 35 knots diminishing to 15 to 25 knots. A
chance of rain showers. Waves subsiding to 2 to 4 feet.
.TONIGHT...North winds 10 to 20 knots diminishing to 5 to
15 knots late. Waves subsiding to calm to 2 feet.
.SATURDAY...North winds 5 to 15 knots backing west by mid
afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...Southwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. Waves building to 2 to 4 feet.
.SUNDAY...West gales to 35 knots becoming northwest gales to
40 knots in the afternoon. A chance of showers. Waves building to
7 to 11 feet occasionally to 14 feet.
.SUNDAY NIGHT...Northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. Waves subsiding to 1 to 3 feet.
.MONDAY...South winds 10 to 20 knots becoming west 20 to
30 knots. Waves subsiding to calm to 2 feet, then building to
5 to 8 feet occasionally to 10 feet.
.TUESDAY...West gales to 35 knots becoming north 15 to 25 knots.
Waves building to 7 to 10 feet occasionally to 13 feet, then
subsiding to 2 to 4 feet.

$$

LSZ261-061500-
MAFOR 0610/
Superior West 11820 11810 11800 11700 11600 11500 12510. Waves 2
to 4 feet subsiding to 1 to 3 feet today. Waves 1 foot or less
tonight.

Superior North Central 11830 11130 11120 12810 11800 12600. Waves
3 to 6 feet subsiding to 1 to 3 feet today. Waves 2 feet or less
tonight.

Superior South Central 11850 11840 12830 11820 11810 11710 11700.
A chance of rain showers early this morning. Waves 6 to 9 feet
subsiding to 2 to 4 feet today. Waves 2 to 4 feet subsiding to 1
to 3 feet tonight.

Superior East...GALE WARNING IN EFFECT...13840 11830 11820 11120
11810 11800. A chance of rain showers this morning. Waves 5 to 8
feet subsiding to 3 to 6 feet today. Waves 2 to 4 feet subsiding
to 1 to 3 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