205
FZUS63 KMQT 260801
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
400 AM EDT Tue May 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...

Lake Superior will remain under the influence of 29.8 inch troughing
today until a 30.4 inch high over the western shores of Hudson Bay
extends weak ridging of 30.1 inches over Lake Superior by tonight.
The parent high then shifts south over the lake on Thursday at 30.3
inches. On Friday, the high weakens to around 30.1 inches as it
continues its southward propagation. However, another ridge pushing
in from Hudson Bay brings 30.1 inch ridging back over Lake Superior
late on Friday, with the ridging increasing once again to 30.3
inches by Saturday as the parent high over Hudson Bay pushes south.


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

.EARLY THIS MORNING...West winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...Northwest winds 5 to 15 knots veering east in the
afternoon, then backing northeast late. Waves calm to 2 feet.
.TONIGHT...Northeast winds 5 to 15 knots diminishing to less than
10 knots after midnight, then increasing to 5 to 15 knots late.
Waves calm to 2 feet.
.WEDNESDAY...Northeast winds 10 to 20 knots veering east in the
afternoon, then backing northeast late. Waves building to 2 to
4 feet, then subsiding to 1 to 3 feet.
.WEDNESDAY NIGHT...Northeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. Waves subsiding to calm to 2 feet.
.THURSDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.THURSDAY NIGHT...North winds 5 to 15 knots backing west after
midnight. Waves calm to 2 feet.
.FRIDAY...East winds 5 to 15 knots becoming northeast 10 to
20 knots. Waves building to 1 to 3 feet, then subsiding to calm
to 2 feet.
.SATURDAY...Northeast winds 10 to 20 knots. Waves building to
2 to 4 feet, then subsiding to 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 Tue May 26 2026

.EARLY THIS MORNING...West winds 10 to 20 knots. Waves 2 to
4 feet subsiding to 1 to 3 feet.
.TODAY...Northwest winds 5 to 15 knots veering northeast in the
afternoon. Waves subsiding to calm to 2 feet.
.TONIGHT...East winds less than 10 knots backing northeast after
midnight, then increasing to 5 to 15 knots late. Waves calm to
2 feet.
.WEDNESDAY...Northeast winds 10 to 20 knots veering east late.
Waves building to 2 to 4 feet, then subsiding to 1 to 3 feet.
.WEDNESDAY NIGHT...Northeast winds 5 to 15 knots diminishing to
less than 10 knots after midnight. Waves subsiding to calm to
2 feet.
.THURSDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.THURSDAY NIGHT...Southwest winds 5 to 15 knots veering west
after midnight. Waves calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots backing east. Waves building
to 1 to 3 feet, then subsiding to calm to 2 feet.
.SATURDAY...Northeast winds 10 to 20 knots. Waves building to
2 to 4 feet, then subsiding to 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 Tue May 26 2026

.EARLY THIS MORNING...West winds 15 to 25 knots. Patchy fog.
Waves 2 to 4 feet subsiding to 1 to 3 feet.
.TODAY...Northwest winds 5 to 15 knots backing southwest late.
Patchy fog. Waves subsiding to calm to 2 feet.
.TONIGHT...South winds less than 10 knots veering northwest after
midnight, then becoming north 5 to 15 knots late. Waves calm to
2 feet.
.WEDNESDAY...Northeast winds 5 to 15 knots backing north in the
afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Northeast winds 5 to 15 knots. Waves calm to
2 feet.
.THURSDAY...Northeast winds less than 10 knots becoming south
5 to 15 knots by mid afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Southwest winds 5 to 15 knots veering west
after midnight. Waves calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots backing east. Waves calm to
2 feet.
.SATURDAY...East 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 Tue May 26 2026

.EARLY THIS MORNING...West winds 15 to 25 knots. Waves 2 to
4 feet.
.TODAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then veering east late. Patchy fog by
mid afternoon. Waves subsiding to calm to 2 feet.
.TONIGHT...Southeast winds 5 to 15 knots veering south after
midnight, then backing northeast late. Waves calm to 2 feet.
.WEDNESDAY...North winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...North winds 10 to 20 knots becoming northeast
5 to 15 knots after midnight. Waves building to 1 to 3 feet, then
subsiding to calm to 2 feet.
.THURSDAY...North winds 5 to 15 knots veering east by mid
afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...South winds 5 to 15 knots veering west after
midnight. Waves calm to 2 feet.
.FRIDAY...North winds 10 to 20 knots becoming east 5 to 15 knots.
Waves calm to 2 feet.
.SATURDAY...East winds 10 to 20 knots diminishing to 5 to
15 knots. Waves building to 1 to 3 feet, then subsiding to 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 Tue May 26 2026

.EARLY THIS MORNING...Southwest winds 15 to 25 knots. A slight
chance of showers. Waves 3 to 5 feet occasionally to 7 feet
subsiding to 2 to 4 feet.
.TODAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. Patchy fog. Waves subsiding to calm to
2 feet.
.TONIGHT...West winds 5 to 15 knots veering north late. Waves
calm to 2 feet.
.WEDNESDAY...North winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. Waves building to 2 to 4 feet.
.WEDNESDAY NIGHT...North winds 10 to 20 knots becoming northeast
5 to 15 knots after midnight. Waves subsiding to calm to 2 feet.
.THURSDAY...North winds 5 to 15 knots backing northwest by mid
afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Southwest winds 5 to 15 knots veering west
after midnight. Waves calm to 2 feet.
.FRIDAY...Northwest winds 5 to 15 knots veering east. Waves calm
to 2 feet.
.SATURDAY...East winds 10 to 20 knots becoming northeast 5 to
15 knots. Waves building to 1 to 3 feet, then subsiding to 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 Tue May 26 2026

.EARLY THIS MORNING...Southwest winds 10 to 20 knots. A slight
chance of showers and thunderstorms. Waves 3 to 5 feet
occasionally to 7 feet subsiding to 2 to 4 feet.
.TODAY...West winds 10 to 20 knots. Patchy fog. Waves subsiding
to calm to 2 feet.
.TONIGHT...West winds 5 to 15 knots veering north late. Patchy
fog through midnight. Waves calm to 2 feet.
.WEDNESDAY...North winds 5 to 15 knots becoming northwest 10 to
20 knots in the afternoon, then increasing to 15 to 25 knots
late. Waves building to 2 to 4 feet.
.WEDNESDAY NIGHT...North winds 10 to 20 knots. Waves subsiding to
calm to 2 feet.
.THURSDAY...North winds 5 to 15 knots backing northwest by mid
afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...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.
.SATURDAY...North winds 10 to 20 knots diminishing to 5 to
15 knots. Waves calm to 2 feet.

$$

LSZ261-261400-
MAFOR 2609/
Superior West 11610 11700 12200 14100. Waves 1 to 3 feet
subsiding to 1 foot or less today. Waves 1 foot or less tonight.

Superior North Central 11630 11710 11700 11600 11500 11400 11500
11700. Waves 2 to 4 feet subsiding to 1 to 2 feet today. Waves 1
foot or less tonight.

Superior South Central 11530 11730 11720 11700 11800 12400 11600.
Waves 2 to 4 feet subsiding to 2 feet or less today. Waves 1 foot
or less tonight.

Superior East 11530 11620 13710 11610 12700. A chance of showers
early this morning. Waves 3 to 5 feet subsiding to 2 to 3 feet
today. Waves 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