361
FZUS63 KMQT 300801
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
400 AM EDT Sat May 30 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 30.4 inch high pressure over Hudson Bay dives south towards the
Upper Great Lakes through today, arriving at 30.3 inches. The high
remains over the area into tomorrow while progressively weakening
with time, eventually becoming around 30.0 inches by late tomorrow
as another 30.4 inch high approaches the area from Hudson Bay. This
second high builds over the Great Lakes Monday before arriving by
Tuesday. The high remains over the Great Lakes into Wednesday
morning.



LSZ162-302000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
400 AM EDT Sat May 30 2026 /300 AM CDT Sat May 30 2026/

.EARLY THIS MORNING...Northeast winds 15 to 25 knots. Waves 2 to
4 feet building to 3 to 5 feet occasionally to 7 feet.
.TODAY...Northeast winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. Waves building to 3 to 6 feet
occasionally to 8 feet.
.TONIGHT...Northeast winds 20 to 30 knots diminishing to 5 to
15 knots. Waves subsiding to calm to 2 feet.
.SUNDAY...Northeast winds 5 to 15 knots veering east in the
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...East winds 5 to 15 knots backing northeast after
midnight. Waves calm to 2 feet.
.MONDAY...Northeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. Waves building to 2 to 4 feet.
.MONDAY NIGHT...Northeast winds 5 to 15 knots. Waves subsiding to
calm to 2 feet.
.TUESDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...East winds 5 to 15 knots veering southwest. A chance
of showers. Waves calm to 2 feet.

$$

LSZ263-302000-
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 Sat May 30 2026

.EARLY THIS MORNING...East winds 10 to 20 knots. Waves 2 to
4 feet.
.TODAY...East winds 10 to 20 knots becoming northeast 15 to
25 knots in the afternoon, then increasing to 20 to 30 knots
late. Waves building to 3 to 5 feet occasionally to 7 feet.
.TONIGHT...East winds 20 to 30 knots diminishing to 5 to 15 knots
after midnight, then veering south late. Waves subsiding to calm
to 2 feet.
.SUNDAY...South winds less than 10 knots increasing to 5 to
15 knots in the afternoon, then backing east late. Waves calm to
2 feet.
.SUNDAY NIGHT...East winds less than 10 knots increasing to 5 to
15 knots after midnight. Waves calm to 2 feet.
.MONDAY...Northeast winds 10 to 20 knots. Waves building to 2 to
4 feet.
.MONDAY NIGHT...Northeast winds 5 to 15 knots veering east after
midnight. Waves subsiding to calm to 2 feet.
.TUESDAY...East winds 5 to 15 knots veering southwest. Waves calm
to 2 feet.
.WEDNESDAY...Southwest winds 5 to 15 knots backing south. A
chance of showers. Waves calm to 2 feet.

$$

LSZ264-302000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
400 AM EDT Sat May 30 2026

.EARLY THIS MORNING...East winds 10 to 20 knots. Waves 2 to
4 feet.
.TODAY...East winds 10 to 20 knots. Waves subsiding to 1 to
3 feet.
.TONIGHT...East winds 5 to 15 knots veering southeast after
midnight, then becoming south less than 10 knots late. Waves
subsiding to calm to 2 feet.
.SUNDAY...South winds less than 10 knots veering southwest in the
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...South winds less than 10 knots backing east after
midnight. Waves calm to 2 feet.
.MONDAY...East winds 5 to 15 knots. Waves calm to 2 feet.
.MONDAY NIGHT...East winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY...East winds 5 to 15 knots veering south. Waves calm to
2 feet.
.WEDNESDAY...South winds 5 to 15 knots. A chance of showers.
Waves building to 1 to 3 feet.

$$

LSZ265-302000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
400 AM EDT Sat May 30 2026

.EARLY THIS MORNING...East winds 15 to 25 knots. Waves 2 to
4 feet.
.TODAY...East winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon. Waves 2 to 4 feet.
.TONIGHT...Southeast winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then veering south late. Waves subsiding
to calm to 2 feet.
.SUNDAY...South winds 5 to 15 knots backing east in the
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...East winds 5 to 15 knots. Waves calm to 2 feet.
.MONDAY...East winds 5 to 15 knots. Waves calm to 2 feet.
.MONDAY NIGHT...East winds 5 to 15 knots veering southeast after
midnight. Waves calm to 2 feet.
.TUESDAY...East winds 5 to 15 knots veering south. Waves calm to
2 feet.
.WEDNESDAY...Southeast winds 5 to 15 knots becoming south 10 to
20 knots. Waves building to 1 to 3 feet, then subsiding to calm
to 2 feet.

$$

LSZ266-302000-
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 Sat May 30 2026

.EARLY THIS MORNING...East winds 10 to 20 knots. Waves 3 to
5 feet occasionally to 7 feet subsiding to 2 to 4 feet.
.TODAY...East winds 10 to 20 knots. Waves subsiding to 1 to
3 feet.
.TONIGHT...East winds 5 to 15 knots veering south late. Waves
subsiding to calm to 2 feet.
.SUNDAY...South winds less than 10 knots backing north late.
Waves calm to 2 feet.
.SUNDAY NIGHT...Northwest winds less than 10 knots becoming
northeast 5 to 15 knots after midnight. Waves calm to 2 feet.
.MONDAY...East winds 5 to 15 knots backing northeast by mid
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...Northeast winds 5 to 15 knots veering east after
midnight. Waves calm to 2 feet.
.TUESDAY...Southeast winds 5 to 15 knots veering south. Waves
calm to 2 feet.
.WEDNESDAY...South winds 10 to 20 knots. Waves building to 2 to
4 feet.

$$

LSZ267-302000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
400 AM EDT Sat May 30 2026

.EARLY THIS MORNING...East winds 10 to 20 knots. Waves 1 to
3 feet subsiding to calm to 2 feet.
.TODAY...East winds 5 to 15 knots backing northeast in the
afternoon. Waves calm to 2 feet.
.TONIGHT...East winds 5 to 15 knots veering south late. Waves
calm to 2 feet.
.SUNDAY...Southeast winds less than 10 knots veering northwest in
the afternoon, then increasing to 5 to 15 knots late. Waves calm
to 2 feet.
.SUNDAY NIGHT...Northwest winds 5 to 15 knots veering north after
midnight. Waves calm to 2 feet.
.MONDAY...East winds 5 to 15 knots becoming northeast 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...North winds 10 to 20 knots becoming northeast
5 to 15 knots after midnight. Waves calm to 2 feet.
.TUESDAY...North winds 5 to 15 knots veering south. Waves calm to
2 feet.
.WEDNESDAY...South winds 5 to 15 knots increasing to 10 to
20 knots. Waves building to 2 to 4 feet.

$$

LSZ261-301400-
MAFOR 3009/
Superior West 13130 13140 11230 11210. Waves 3 to 6 feet today.
Waves 3 to 6 feet subsiding to 2 to 3 feet tonight.

Superior North Central 14220 11220 11210 12300. Waves 2 to 4 feet
today. Waves 1 to 3 feet tonight.

Superior South Central 11230 11220 12230 11220 12310 11300. Waves
3 to 5 feet subsiding to 2 to 4 feet today. Waves 1 to 3 feet
tonight.

Superior East 11220 12210 11110 11100 11200 12300. Waves 1 to 3
feet subsiding to 1 foot or less today. Waves 1 foot or less
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