899
FZUS63 KMQT 300201
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1001 PM EDT Fri May 29 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 Saturday, arriving at 30.3 inches. The
high remains over the area into Sunday while progressively weakening
with time, eventually becoming around 30.0 inches by late Sunday 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.



LSZ162-300800-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1001 PM EDT Fri May 29 2026 /901 PM CDT Fri May 29 2026/

.REST OF TONIGHT...East winds 15 to 25 knots becoming northeast
20 to 30 knots after midnight, then increasing to 30 knots with a
few gale force gusts to 35 knots possible late. Waves calm to
2 feet building to 3 to 6 feet occasionally to 8 feet.
.SATURDAY...Northeast winds 20 to 30 knots. Waves building to
4 to 7 feet occasionally to 9 feet.
.SATURDAY NIGHT...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. 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 10 to 20 knots. Waves building to 1 to
3 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...Southwest winds 5 to 15 knots. A chance of showers
and thunderstorms. Waves calm to 2 feet.

$$

LSZ263-300800-
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-
1001 PM EDT Fri May 29 2026

.REST OF TONIGHT...East winds 10 to 20 knots increasing to 15 to
25 knots after midnight. Waves calm to 2 feet building to 2 to
4 feet.
.SATURDAY...East winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon, then becoming northeast 20 to 30 knots
late. Waves building to 3 to 6 feet occasionally to 8 feet.
.SATURDAY NIGHT...East winds 15 to 25 knots diminishing to 5 to
15 knots after midnight, then veering south late. 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...Southwest winds less than 10 knots becoming
northeast 5 to 15 knots after midnight. Waves calm to 2 feet.
.MONDAY...Northeast winds 5 to 15 knots. Waves building to 1 to
3 feet.
.MONDAY NIGHT...East winds 5 to 15 knots. 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. A chance of showers.
Waves calm to 2 feet.

$$

LSZ264-300800-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1001 PM EDT Fri May 29 2026

.REST OF TONIGHT...East winds 5 to 15 knots increasing to 15 to
25 knots after midnight. Waves calm to 2 feet building to 3 to
5 feet occasionally to 7 feet.
.SATURDAY...East winds 10 to 20 knots. Waves subsiding to 1 to
3 feet.
.SATURDAY NIGHT...East winds 5 to 15 knots becoming south less
than 10 knots late. Waves subsiding to calm to 2 feet.
.SUNDAY...Southwest winds less than 10 knots. Waves calm to
2 feet.
.SUNDAY NIGHT...Southwest 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...Southwest winds 5 to 15 knots. A chance of showers.
Waves calm to 2 feet.

$$

LSZ265-300800-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1001 PM EDT Fri May 29 2026

.REST OF TONIGHT...Southeast winds 5 to 15 knots becoming east
15 to 25 knots after midnight. Waves calm to 2 feet building to
3 to 5 feet occasionally to 7 feet.
.SATURDAY...East winds 15 to 25 knots. Waves subsiding to 2 to
4 feet, then building to 3 to 5 feet occasionally to 7 feet.
.SATURDAY NIGHT...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...Southwest winds 5 to 15 knots backing east by mid
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...Southeast winds 5 to 15 knots backing northeast
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 veering southeast after
midnight. Waves calm to 2 feet.
.TUESDAY...East winds 5 to 15 knots veering southwest. Waves calm
to 2 feet.
.WEDNESDAY...Southeast winds 10 to 20 knots veering southwest. A
chance of showers. Waves building to 1 to 3 feet, then subsiding
to calm to 2 feet.

$$

LSZ266-300800-
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-
1001 PM EDT Fri May 29 2026

.REST OF TONIGHT...East winds 15 to 25 knots. Waves 1 to 3 feet
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
2 to 4 feet.
.SATURDAY...East winds 10 to 20 knots. Waves subsiding to 1 to
3 feet.
.SATURDAY NIGHT...East winds 5 to 15 knots veering south late.
Waves subsiding to calm to 2 feet.
.SUNDAY...South winds 5 to 15 knots becoming west less than
10 knots 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...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...East 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.

$$

LSZ267-300800-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1001 PM EDT Fri May 29 2026

.REST OF TONIGHT...East winds 15 to 25 knots diminishing to 10 to
20 knots late. Waves 1 to 3 feet building to 2 to 4 feet, then
subsiding to 1 to 3 feet.
.SATURDAY...East winds 5 to 15 knots backing northeast in the
afternoon. Waves subsiding to calm to 2 feet.
.SATURDAY NIGHT...Northeast winds 5 to 15 knots veering southeast
after midnight, then veering south late. Waves calm to 2 feet.
.SUNDAY...Southwest winds 5 to 15 knots veering northwest 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...Northeast winds 5 to 15 knots becoming north 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...Southeast winds 5 to 15 knots becoming south 10 to
20 knots. Waves building to 2 to 4 feet, then subsiding to 1 to
3 feet.

$$

LSZ261-300800-
MAFOR 3003/
Superior West 11130 12140 11240 11130 13140. Waves 1 to 3 feet
building to 3 to 5 feet overnight. Waves 3 to 6 feet building to
4 to 7 feet Saturday. Waves 4 to 7 feet Saturday evening.

Superior North Central 13230 11320 13220 11210. Waves 1 to 3 feet
building to 3 to 5 feet overnight. Waves 3 to 5 feet subsiding to
2 to 3 feet Saturday. Waves 1 to 3 feet Saturday evening.

Superior South Central 13230 11220 12230 11220 11310. Waves
around 1 foot building to 3 to 5 feet overnight. Waves 3 to 5
feet subsiding to 2 to 4 feet Saturday. Waves 2 to 3 feet
Saturday evening.

Superior East 11240 11230 11220 12210 11110 11100 11200. Waves 2
to 4 feet overnight. Waves 1 to 3 feet Saturday. Waves 1 foot or
less Saturday evening.

$$

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