274
FZUS63 KMQT 282001
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
401 PM EDT Thu May 28 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 30.3 inch high pressure over the Great Lakes will weaken through
Friday to 30.0 inches as another high pressure dives south from the
Hudson Bay. This high pressure will reach the Upper Great Lakes on
Saturday at 30.3 inches and remain over the area through Sunday. The
high will weaken on Monday as another 30.3 inch approaches the area
from the north, which will build over the Great Lakes on Tuesday.


LSZ162-290800-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
401 PM EDT Thu May 28 2026 /301 PM CDT Thu May 28 2026/

.LATE THIS AFTERNOON...Northeast winds 5 to 15 knots. Waves calm
to 2 feet.
.TONIGHT...North winds 5 to 15 knots backing southwest late.
Waves calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.
.FRIDAY NIGHT...Northeast winds 5 to 15 knots increasing to 15 to
25 knots. Waves building to 2 to 4 feet.
.SATURDAY...Northeast winds 15 to 25 knots. Waves building to
3 to 6 feet occasionally to 8 feet.
.SATURDAY NIGHT...Northeast winds 15 to 25 knots diminishing to
5 to 15 knots after midnight. Waves subsiding to calm to 2 feet.
.SUNDAY...South winds 5 to 15 knots veering southwest by mid
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...Northwest winds 5 to 15 knots becoming northeast
10 to 20 knots after midnight. Waves calm to 2 feet.
.MONDAY...Northeast winds 10 to 20 knots. Waves building to 2 to
4 feet, then subsiding to calm to 2 feet.
.TUESDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ263-290800-
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-
401 PM EDT Thu May 28 2026

.LATE THIS AFTERNOON...Northeast winds 5 to 15 knots. Waves calm
to 2 feet.
.TONIGHT...East winds 5 to 15 knots veering southwest after
midnight. Waves calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots backing east late. Waves
calm to 2 feet.
.FRIDAY NIGHT...East winds 5 to 15 knots increasing to 10 to
20 knots after midnight. Waves building to 2 to 4 feet.
.SATURDAY...East winds 10 to 20 knots becoming northeast 15 to
25 knots by mid afternoon. Waves building to 3 to 5 feet
occasionally to 7 feet.
.SATURDAY NIGHT...East winds 10 to 20 knots becoming south 5 to
15 knots after midnight. Waves subsiding to calm to 2 feet.
.SUNDAY...Southwest winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots veering northeast after
midnight. Waves calm to 2 feet.
.MONDAY...Northeast winds 10 to 20 knots diminishing to 5 to
15 knots. Waves building to 2 to 4 feet, then subsiding to calm
to 2 feet.
.TUESDAY...Northeast winds 5 to 15 knots veering east. Waves calm
to 2 feet.

$$

LSZ264-290800-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
401 PM EDT Thu May 28 2026

.LATE THIS AFTERNOON...South winds 5 to 15 knots. Waves calm to
2 feet.
.TONIGHT...South winds 5 to 15 knots veering southwest after
midnight. Waves calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots backing east late. Waves calm
to 2 feet.
.FRIDAY NIGHT...East winds 5 to 15 knots increasing to 10 to
20 knots after midnight. Waves building to 2 to 4 feet.
.SATURDAY...East winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. Waves subsiding to 1 to 3 feet.
.SATURDAY NIGHT...East winds 5 to 15 knots veering south after
midnight. Waves subsiding to calm to 2 feet.
.SUNDAY...Southwest winds less than 10 knots. Waves calm to
2 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots veering northeast after
midnight. Waves calm to 2 feet.
.MONDAY...East winds 5 to 15 knots backing northeast. Waves calm
to 2 feet.
.TUESDAY...East winds 5 to 15 knots veering southeast. Waves calm
to 2 feet.

$$

LSZ265-290800-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
401 PM EDT Thu May 28 2026

.LATE THIS AFTERNOON...East winds 5 to 15 knots. Waves calm to
2 feet.
.TONIGHT...Southeast winds 5 to 15 knots veering south after
midnight, then veering west late. Waves calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon, then becoming northeast 5 to 15 knots late.
Waves calm to 2 feet.
.FRIDAY NIGHT...East winds 5 to 15 knots increasing to 10 to
20 knots after midnight. Waves building to 2 to 4 feet.
.SATURDAY...East winds 15 to 25 knots. Waves 2 to 4 feet.
.SATURDAY NIGHT...Southeast winds 10 to 20 knots becoming south
5 to 15 knots after midnight. Waves subsiding to calm to 2 feet.
.SUNDAY...Southwest winds 5 to 15 knots backing east by mid
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...Southwest winds 5 to 15 knots backing northeast
after midnight. Waves calm to 2 feet.
.MONDAY...Northeast winds 5 to 15 knots backing north. Waves calm
to 2 feet.
.TUESDAY...East winds 5 to 15 knots veering southeast. Waves calm
to 2 feet.

$$

LSZ266-290800-
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-
401 PM EDT Thu May 28 2026

.LATE THIS AFTERNOON...West winds 5 to 15 knots. Waves calm to
2 feet.
.TONIGHT...Southeast winds less than 10 knots becoming south 5 to
15 knots after midnight, then veering west late. Waves calm to
2 feet.
.FRIDAY...West winds 5 to 15 knots veering north late. Waves calm
to 2 feet.
.FRIDAY NIGHT...Northeast winds 10 to 20 knots becoming east
15 to 25 knots after midnight, then diminishing to 10 to 20 knots
late. Waves building to 2 to 4 feet.
.SATURDAY...East winds 10 to 20 knots. Waves subsiding to 1 to
3 feet.
.SATURDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight. Waves subsiding to calm to 2 feet.
.SUNDAY...Southwest winds 5 to 15 knots veering west by mid
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...Northwest winds 5 to 15 knots veering northeast
after midnight. Waves calm to 2 feet.
.MONDAY...Northeast winds 5 to 15 knots backing north. Waves calm
to 2 feet.
.TUESDAY...Northeast winds 5 to 15 knots veering south. Waves
calm to 2 feet.

$$

LSZ267-290800-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
401 PM EDT Thu May 28 2026

.LATE THIS AFTERNOON...Northwest winds 5 to 15 knots. Waves calm
to 2 feet.
.TONIGHT...Northwest winds less than 10 knots becoming southwest
5 to 15 knots after midnight. Waves calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots veering northwest late. Waves
calm to 2 feet.
.FRIDAY NIGHT...Northeast winds 10 to 20 knots becoming east
15 to 25 knots after midnight, then diminishing to 10 to 20 knots
late. Waves building to 1 to 3 feet.
.SATURDAY...East winds 5 to 15 knots backing northeast by mid
afternoon. Waves subsiding to calm to 2 feet.
.SATURDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight. Waves calm to 2 feet.
.SUNDAY...Southwest winds 5 to 15 knots veering northwest by mid
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...North winds 5 to 15 knots. Waves calm to 2 feet.
.MONDAY...North winds 10 to 20 knots. Waves calm to 2 feet.
.TUESDAY...Northwest winds 10 to 20 knots becoming south 5 to
15 knots. Waves calm to 2 feet.

$$

LSZ261-290200-
MAFOR 2821/
Superior West 12100 11700 11600 11500 13510. Waves 1 foot or
less.

Superior North Central 11300 12400 11500 12610 11620 11610. Waves
2 feet or less.

Superior South Central 12310 11400 11500 12610 11620 11810. Waves
2 feet or less.

Superior East 11700 11600 11400 11500 11510 11600 12700. Waves 2
feet or less.

$$

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