154
FZUS63 KMQT 260801
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
400 AM EDT Mon Oct 26 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...

High pressure becomes centered over northern Ontario at 30.5 inches
on today, shifting to the Saint Lawrence Seaway on Tuesday. A 29.8
inch low tracks from the Northern Plains Tuesday night to James Bay
at 29.6 inches by Thursday morning, dragging a 29.9 inch trough
across Lake Superior Wednesday evening to Thursday morning. High
pressure of 30.2 to 30.3 inches returns to the Upper Great Lakes by
Friday.



LSZ162-262000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
400 AM EDT Mon Oct 26 2026 /300 AM CDT Mon Oct 26 2026/

.EARLY THIS MORNING...North winds 10 to 20 knots. Waves calm to
2 feet.
.TODAY...North winds 10 to 20 knots becoming northeast 5 to
15 knots in the afternoon, then veering east late. Waves calm to
2 feet.
.TONIGHT...East winds 5 to 15 knots increasing to 10 to 20 knots
after midnight. A chance of rain showers after midnight. Waves
building to 2 to 4 feet.
.TUESDAY...East winds 15 to 25 knots. Rain showers through early
afternoon, then a chance of rain showers by mid afternoon. Waves
building to 3 to 5 feet occasionally to 7 feet.
.TUESDAY NIGHT...Southeast winds 10 to 20 knots becoming
southwest 5 to 15 knots after midnight. A slight chance of
showers through midnight. Waves subsiding to 1 to 3 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots. A chance of showers
by mid afternoon. Waves 1 to 3 feet.
.WEDNESDAY NIGHT...Southwest winds 5 to 15 knots veering west
after midnight. Showers likely through midnight. Waves subsiding
to calm to 2 feet.
.THURSDAY...West winds 5 to 15 knots. Waves calm to 2 feet.
.FRIDAY...Northwest winds 5 to 15 knots veering east. Waves calm
to 2 feet.

$$

LSZ263-262000-
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 EDT Mon Oct 26 2026

.EARLY THIS MORNING...North winds 5 to 15 knots. Waves 2 to
4 feet.
.TODAY...North winds 5 to 15 knots veering northeast in the
afternoon. Waves subsiding to calm to 2 feet.
.TONIGHT...East winds 5 to 15 knots. A slight chance of rain
showers after midnight. Waves building to 1 to 3 feet.
.TUESDAY...Southeast winds 10 to 20 knots increasing to 15 to
25 knots late. A chance of rain showers. Waves building to 3 to
5 feet occasionally to 7 feet.
.TUESDAY NIGHT...Southeast winds 10 to 20 knots veering south
after midnight. A slight chance of showers through midnight.
Waves building to 3 to 6 feet occasionally to 8 feet, then
subsiding to 2 to 4 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots. Waves 2 to 4 feet.
.WEDNESDAY NIGHT...Southwest winds 5 to 15 knots veering west
after midnight. Showers through midnight, then a chance of
showers after midnight. Waves subsiding to 1 to 3 feet.
.THURSDAY...West winds 5 to 15 knots. Waves subsiding to calm to
2 feet.
.FRIDAY...Northwest winds 5 to 15 knots backing southeast. Waves
calm to 2 feet.

$$

LSZ264-262000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
400 AM EDT Mon Oct 26 2026

.EARLY THIS MORNING...North winds 10 to 20 knots. Waves 2 to
4 feet.
.TODAY...North winds 5 to 15 knots. Waves subsiding to calm to
2 feet.
.TONIGHT...Northeast winds less than 10 knots increasing to 5 to
15 knots after midnight, then veering east late. Waves calm to
2 feet.
.TUESDAY...Southeast winds 5 to 15 knots increasing to 15 to
25 knots in the afternoon. A chance of rain showers. Waves
building to 3 to 6 feet occasionally to 8 feet.
.TUESDAY NIGHT...Southeast winds 15 to 25 knots veering south
after midnight. A chance of showers through midnight. Waves
subsiding to 3 to 5 feet occasionally to 7 feet.
.WEDNESDAY...Southwest winds 5 to 15 knots. Waves subsiding to
2 to 4 feet.
.WEDNESDAY NIGHT...Southwest winds 5 to 15 knots veering west
after midnight. Showers likely. Waves subsiding to 1 to 3 feet.
.THURSDAY...West winds 10 to 20 knots diminishing to 5 to
15 knots. Waves subsiding to calm to 2 feet.
.FRIDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ265-262000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
400 AM EDT Mon Oct 26 2026

.EARLY THIS MORNING...North winds 15 to 25 knots. Waves 2 to
4 feet.
.TODAY...North winds 15 to 25 knots diminishing to 10 to 20 knots
in the afternoon. Waves subsiding to calm to 2 feet.
.TONIGHT...Northeast winds 10 to 20 knots veering east after
midnight. Waves calm to 2 feet.
.TUESDAY...Southeast winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. A chance of showers. Waves building to
3 to 6 feet occasionally to 8 feet.
.TUESDAY NIGHT...South winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. A slight chance of showers through
midnight. Waves subsiding to 2 to 4 feet.
.WEDNESDAY...South winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. Waves subsiding to calm to 2 feet.
.WEDNESDAY NIGHT...South winds 10 to 20 knots becoming west 15 to
25 knots after midnight. Showers. Waves calm to 2 feet.
.THURSDAY...West winds 15 to 25 knots diminishing to 10 to
20 knots. Waves calm to 2 feet.
.FRIDAY...Northwest winds 10 to 20 knots backing south. Waves
calm to 2 feet.

$$

LSZ266-262000-
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 EDT Mon Oct 26 2026

.EARLY THIS MORNING...North winds 15 to 25 knots. Waves 3 to
5 feet occasionally to 7 feet.
.TODAY...North winds 15 to 25 knots diminishing to 10 to 20 knots
in the afternoon. Waves subsiding to 1 to 3 feet.
.TONIGHT...North winds 5 to 15 knots veering east late. Waves
subsiding to calm to 2 feet.
.TUESDAY...Southeast winds 10 to 20 knots increasing to 20 to
30 knots. A chance of rain showers. Waves building to 3 to 5 feet
occasionally to 7 feet.
.TUESDAY NIGHT...South winds 20 to 30 knots. A chance of showers
through midnight. Waves building to 3 to 6 feet occasionally to
8 feet.
.WEDNESDAY...South winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. Waves subsiding to 2 to 4 feet.
.WEDNESDAY NIGHT...South winds 10 to 20 knots becoming southwest
15 to 25 knots after midnight. Showers. Waves subsiding to 1 to
3 feet.
.THURSDAY...Northwest winds 10 to 20 knots. Waves subsiding to
calm to 2 feet.
.FRIDAY...Northwest winds 10 to 20 knots. Waves calm to 2 feet.

$$

LSZ267-262000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
400 AM EDT Mon Oct 26 2026

.EARLY THIS MORNING...North winds 15 to 25 knots. Waves 3 to
5 feet occasionally to 7 feet.
.TODAY...North winds 15 to 25 knots diminishing to 10 to 20 knots
in the afternoon. Waves subsiding to 1 to 3 feet.
.TONIGHT...North winds 10 to 20 knots veering east after
midnight, then veering southeast late. Waves subsiding to calm to
2 feet.
.TUESDAY...Southeast winds 10 to 20 knots increasing to 20 to
30 knots. Waves building to 3 to 5 feet occasionally to 7 feet.
.TUESDAY NIGHT...Southeast winds 20 to 30 knots veering south
after midnight. Waves building to 3 to 6 feet occasionally to
8 feet.
.WEDNESDAY...South winds 15 to 25 knots. Waves subsiding to 2 to
4 feet.
.WEDNESDAY NIGHT...South winds 15 to 25 knots veering southwest
after midnight. A chance of showers through midnight, then
showers after midnight. Waves 2 to 4 feet.
.THURSDAY...Northwest winds 15 to 25 knots diminishing to 10 to
20 knots. A chance of showers. Waves subsiding to calm to 2 feet.
.FRIDAY...Northwest winds 10 to 20 knots. Waves calm to 2 feet.

$$

LSZ261-261400-
MAFOR 2609/
Superior West 11820 11810 12110 11200 12210 11220. Waves 1 to 3
feet.

Superior North Central 11820 13810 12800 11100 11200. Waves 2 to
4 feet subsiding to 1 to 3 feet today. Waves 1 to 2 feet tonight.

Superior South Central 11830 12820 12810 11110 11100 11200. Waves
3 to 5 feet subsiding to 2 to 4 feet today. Waves 1 to 3 feet
tonight.

Superior East 12820 13810 11800 11100 11200. Waves 3 to 5 feet
subsiding to 2 to 4 feet today. Waves 1 to 2 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