895
FZUS63 KMQT 081402
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1002 AM EDT Fri May 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...

Weak troughing of around 29.7 inches over Lake Superior this morning
deepens to 29.5 inches by this evening as a 29.4 inch low remains
over Hudson Bay. The trough pushes east into Quebec by Saturday
afternoon as 30.3 inch high pressure builds over the Canadian
Prairie this weekend. The high shifts east to the Great Lakes at
30.3 inches by Sunday night. Ridging persists at around 30.2 inches
over Lake Superior through Monday, followed by a 29.7 inch trough on
Tuesday as high pressure weakens and shifts to the East Coast.


LSZ162-082000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1002 AM EDT Fri May 8 2026 /902 AM CDT Fri May 8 2026/

.REST OF TODAY...Southwest winds 5 to 15 knots backing south
late. Sprinkles by mid afternoon. Waves calm to 2 feet.
.TONIGHT...North winds 5 to 15 knots backing west after midnight,
then becoming northwest 10 to 20 knots late. A chance of rain
showers through midnight. Waves calm to 2 feet.
.SATURDAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots late. Waves calm to 2 feet.
.SATURDAY NIGHT...Northwest winds 10 to 20 knots. Waves calm to
2 feet.
.SUNDAY...Northwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...Northwest winds 5 to 15 knots veering north after
midnight. Waves calm to 2 feet.
.MONDAY...South winds 5 to 15 knots backing east. Waves calm to
2 feet.
.TUESDAY...East winds 10 to 20 knots becoming north 5 to
15 knots. A chance of rain showers. Waves calm to 2 feet.

$$

LSZ263-082000-
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-
1002 AM EDT Fri May 8 2026

.REST OF TODAY...Southwest winds 5 to 15 knots increasing to
10 to 20 knots in the afternoon. Waves calm to 2 feet building to
1 to 3 feet, then subsiding to calm to 2 feet.
.TONIGHT...Southwest winds 5 to 15 knots veering northwest late.
A chance of rain showers through midnight. Waves subsiding to
calm to 2 feet.
.SATURDAY...Northwest winds 5 to 15 knots backing west in the
afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...Northwest winds 5 to 15 knots. Waves building
to 1 to 3 feet, then subsiding to calm to 2 feet.
.SUNDAY...Northwest winds 5 to 15 knots backing west by mid
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots veering north after
midnight. Waves calm to 2 feet.
.MONDAY...South winds 5 to 15 knots backing southeast. Waves calm
to 2 feet.
.TUESDAY...East winds 5 to 15 knots backing north. A chance of
rain showers. Waves calm to 2 feet.

$$

LSZ264-082000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1002 AM EDT Fri May 8 2026

.REST OF TODAY...Southwest winds 5 to 15 knots. Waves calm to
2 feet.
.TONIGHT...South winds 5 to 15 knots veering southwest after
midnight, then veering north late. Sprinkles through midnight.
Waves calm to 2 feet.
.SATURDAY...North winds 5 to 15 knots backing west late. Waves
calm to 2 feet.
.SATURDAY NIGHT...West winds 5 to 15 knots veering northwest
after midnight. Waves building to 1 to 3 feet, then subsiding to
calm to 2 feet.
.SUNDAY...Northwest winds 5 to 15 knots backing west by mid
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...Northwest winds 5 to 15 knots veering north after
midnight. Waves calm to 2 feet.
.MONDAY...Northwest winds 5 to 15 knots backing south. Waves calm
to 2 feet.
.TUESDAY...Southeast winds 5 to 15 knots backing east. Waves
building to 1 to 3 feet, then subsiding to calm to 2 feet.

$$

LSZ265-082000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1002 AM EDT Fri May 8 2026

.REST OF TODAY...Southwest winds 10 to 20 knots backing south in
the afternoon. Waves calm to 2 feet.
.TONIGHT...South winds 10 to 20 knots veering west late. A chance
of rain showers. Waves calm to 2 feet.
.SATURDAY...Northwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. Waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet.
.SATURDAY NIGHT...West winds 10 to 20 knots increasing to 15 to
25 knots after midnight. Waves subsiding to calm to 2 feet.
.SUNDAY...Northwest winds 15 to 25 knots. Waves building to 1 to
3 feet, then subsiding to calm to 2 feet.
.SUNDAY NIGHT...Northwest winds 10 to 20 knots. Waves calm to
2 feet.
.MONDAY...Northwest winds 5 to 15 knots backing southeast. Waves
calm to 2 feet.
.TUESDAY...Southeast winds 10 to 20 knots diminishing to 5 to
15 knots. A chance of rain showers. Waves building to 2 to
4 feet, then subsiding to calm to 2 feet.

$$

LSZ266-082000-
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-
1002 AM EDT Fri May 8 2026

.REST OF TODAY...West winds 5 to 15 knots backing south in the
afternoon. Waves calm to 2 feet.
.TONIGHT...South winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then becoming northwest 10 to 20 knots
late. A chance of rain showers. Waves calm to 2 feet.
.SATURDAY...Northwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. Waves building to 3 to 5 feet
occasionally to 7 feet.
.SATURDAY NIGHT...Northwest winds 15 to 25 knots. Waves subsiding
to 1 to 3 feet, then building to 2 to 4 feet.
.SUNDAY...Northwest winds 15 to 25 knots. Waves 2 to 4 feet.
.SUNDAY NIGHT...Northwest winds 10 to 20 knots. Waves subsiding
to 1 to 3 feet.
.MONDAY...Northwest winds 5 to 15 knots backing south. Waves
subsiding to calm to 2 feet.
.TUESDAY...Southeast winds 10 to 20 knots becoming east 5 to
15 knots. Waves building to 2 to 4 feet, then subsiding to calm
to 2 feet.

$$

LSZ267-082000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1002 AM EDT Fri May 8 2026

.REST OF TODAY...West winds 5 to 15 knots backing southwest in
the afternoon, then backing southeast late. Waves calm to 2 feet.
.TONIGHT...Southeast winds 10 to 20 knots veering south after
midnight. A chance of rain showers. Flurries after midnight.
Waves calm to 2 feet.
.SATURDAY...Northwest winds 10 to 20 knots increasing to 20 to
30 knots late. Sprinkles through early afternoon. Waves building
to 3 to 5 feet occasionally to 7 feet.
.SATURDAY NIGHT...Northwest winds 20 to 30 knots diminishing to
10 to 20 knots after midnight. Waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 2 to 4 feet.
.SUNDAY...Northwest winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. Waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet.
.SUNDAY NIGHT...Northwest winds 15 to 25 knots diminishing to
5 to 15 knots after midnight. Waves subsiding to 1 to 3 feet.
.MONDAY...Northwest winds 5 to 15 knots backing south. Waves
subsiding to calm to 2 feet.
.TUESDAY...Southeast winds 5 to 15 knots backing east. Waves calm
to 2 feet.

$$

LSZ261-082000-
MAFOR 0815/
Superior West 11510 11410 11400 11300 12600 12710. Waves 2 feet
or less.

Superior North Central 12510 12410 11400 12700 11810. Waves 2
feet or less.

Superior South Central 11500 11410 11310 12410 11510 11710 11720.
A chance of rain showers overnight. Waves 2 feet or less.

Superior East 11600 11500 11400 11310 12410 11710 11700. A chance
of rain showers overnight. Waves 1 to 2 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