798
FZUS63 KMQT 280801
GLFLS

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

Ridging strengthens to 30.3 inches over Lake Superior today as high
pressure shifts southward from Hudson Bay. Pressure falls to around
30.0 inches over the lake on Friday as the high weakens to 30.1
inches over Lower Michigan. A second high pushing in from Hudson Bay
brings 30.3 inch ridging back over the lake on Saturday, briefly
weakening to 30.0 to 30.1 inches again on Sunday. High pressure
persists over Lake Superior through early next week.


LSZ162-282000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
400 AM EDT Thu May 28 2026 /300 AM CDT Thu May 28 2026/

.EARLY THIS MORNING...Northeast winds 5 to 15 knots. Waves calm
to 2 feet.
.TODAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.TONIGHT...North winds 5 to 15 knots backing west after midnight,
then backing southwest late. Waves calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots. A slight chance of
showers by mid afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...Northeast winds 10 to 20 knots increasing to
15 to 25 knots after midnight. Waves building to 2 to 4 feet.
.SATURDAY...Northeast winds 15 to 25 knots. Waves building to
3 to 5 feet occasionally to 7 feet.
.SATURDAY NIGHT...Northeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. Waves subsiding to calm to 2 feet.
.SUNDAY...East winds less than 10 knots becoming northeast 5 to
15 knots. Waves calm to 2 feet.
.MONDAY...Northeast 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.

$$

LSZ263-282000-
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 Thu May 28 2026

.EARLY THIS MORNING...East winds less than 10 knots. Waves calm
to 2 feet.
.TODAY...Northeast winds less than 10 knots increasing to 5 to
15 knots in the afternoon. Waves calm to 2 feet.
.TONIGHT...East winds less than 10 knots becoming southwest 5 to
15 knots after midnight. Waves calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots. A slight chance of
showers and thunderstorms by mid afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...East winds 10 to 20 knots. 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 becoming northeast
5 to 15 knots. Waves calm to 2 feet.
.MONDAY...Northeast 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.

$$

LSZ264-282000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
400 AM EDT Thu May 28 2026

.EARLY THIS MORNING...Northwest winds less than 10 knots. Waves
calm to 2 feet.
.TODAY...North winds less than 10 knots becoming south 5 to
15 knots in the afternoon, then diminishing to less than 10 knots
late. Waves calm to 2 feet.
.TONIGHT...South winds 5 to 15 knots veering southwest after
midnight. Waves calm to 2 feet.
.FRIDAY...West winds 10 to 20 knots backing southwest in the
afternoon, then becoming east 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 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 becoming northeast
5 to 15 knots. Waves calm to 2 feet.
.MONDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ265-282000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
400 AM EDT Thu May 28 2026

.EARLY THIS MORNING...Northwest winds 5 to 15 knots. Waves calm
to 2 feet.
.TODAY...North winds 5 to 15 knots veering east in the afternoon.
Waves calm to 2 feet.
.TONIGHT...Southeast winds 5 to 15 knots veering south after
midnight, then becoming west 10 to 20 knots late. Waves calm to
2 feet.
.FRIDAY...West winds 10 to 20 knots becoming north 5 to 15 knots
late. Waves building to 1 to 3 feet, then subsiding to 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 5 to 15 knots veering south
after midnight. Waves subsiding to calm to 2 feet.
.SUNDAY...Southwest winds 5 to 15 knots backing northeast. Waves
calm to 2 feet.
.MONDAY...Northeast winds 5 to 15 knots backing north. Waves calm
to 2 feet.

$$

LSZ266-282000-
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 Thu May 28 2026

.EARLY THIS MORNING...Northwest winds 5 to 15 knots. Waves 1 to
3 feet subsiding to calm to 2 feet.
.TODAY...North winds less than 10 knots backing west late. Waves
calm to 2 feet.
.TONIGHT...South winds 5 to 15 knots becoming west 10 to 20 knots
late. Waves calm to 2 feet.
.FRIDAY...West winds 10 to 20 knots veering northwest in the
afternoon, then becoming north 5 to 15 knots late. Waves building
to 1 to 3 feet, then subsiding to calm to 2 feet.
.FRIDAY NIGHT...East winds 10 to 20 knots increasing to 15 to
25 knots after midnight. 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 10 to 20 knots becoming south
5 to 15 knots after midnight. Waves subsiding to calm to 2 feet.
.SUNDAY...South winds 5 to 15 knots backing northeast. Waves calm
to 2 feet.
.MONDAY...Northeast winds 5 to 15 knots backing north. Waves calm
to 2 feet.

$$

LSZ267-282000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
400 AM EDT Thu May 28 2026

.EARLY THIS MORNING...North winds 10 to 20 knots. Waves 1 to
3 feet subsiding to calm to 2 feet.
.TODAY...North winds 5 to 15 knots backing west late. Waves calm
to 2 feet.
.TONIGHT...West 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...East winds 10 to 20 knots. Waves building to 1 to
3 feet.
.SATURDAY...East winds 5 to 15 knots becoming northeast 10 to
20 knots 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...Northwest winds 5 to 15 knots veering north. Waves calm
to 2 feet.
.MONDAY...North winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ261-281400-
MAFOR 2809/
Superior West 11100 11200 14100 11700 11600. Waves 1 foot or
less.

Superior North Central 11700 11800 11700 14400 11500. Waves 1
foot or less.

Superior South Central 11700 11800 11100 11300 11310 11300 11400
11510. Waves 2 feet or less.

Superior East 11810 11800 11700 13600 11500 11510. 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