194
FZUS63 KMQT 020900
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
400 AM EST Mon Mar 2 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 30.6 high currently centered over Lake Ontario continues to shift
east today as a 29.7 inch low over northern Manitoba moves east over
Hudson Bay, deepening to 29.6 inches. The low drags a weak trough of
30.2 inches over Lake Superior tonight before weak ridging builds
over the lake on Tuesday as another, more compact high of 30.4
inches moves to James Bay. Another large area of high pressure will
move into central and eastern Canada by Thursday morning. The strong
high will help keep a 29.7 inch low moving up from the Southern
Plains to our south as it weakens to 29.9 inches by the time it
reaches the Lower Great Lakes Wednesday night, dissipating
thereafter.


LSZ162-022100-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
400 AM EST Mon Mar 2 2026 /300 AM CST Mon Mar 2 2026/

.EARLY THIS MORNING...Southwest winds 10 to 20 knots. Waves calm
to 2 feet.
.TODAY...Southwest winds 20 to 30 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible by late morning,
then diminishing to 20 to 30 knots by mid afternoon. Waves
building to 4 to 7 feet occasionally to 9 feet, then subsiding to
3 to 5 feet occasionally to 7 feet.
.TONIGHT...Southwest winds 15 to 25 knots diminishing to 5 to
15 knots by midnight. Waves subsiding to calm to 2 feet.
.TUESDAY...Southwest winds 5 to 15 knots backing south by late
morning, then veering southwest by mid afternoon. Waves calm to
2 feet.
.TUESDAY NIGHT...Southwest winds 5 to 15 knots. Waves calm to
2 feet.
.WEDNESDAY...Southwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...South winds 5 to 15 knots backing northeast
after midnight. Waves calm to 2 feet.
.THURSDAY...Northeast winds 15 to 25 knots becoming east 10 to
20 knots. Waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet.
.FRIDAY...Northeast winds 5 to 15 knots becoming north 10 to
20 knots. A chance of rain showers. Waves subsiding to calm to
2 feet, then building to 1 to 3 feet.

$$

LSZ263-022100-
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 EST Mon Mar 2 2026

...GALE WARNING IN EFFECT FROM 10 AM EST THIS MORNING THROUGH
THIS EVENING...

.EARLY THIS MORNING...Southwest winds 10 to 20 knots. Waves calm
to 2 feet building to 1 to 3 feet.
.TODAY...Southwest winds 20 to 30 knots increasing to gales to
35 knots. Waves building to 6 to 9 feet occasionally to 11 feet,
then subsiding to 4 to 7 feet occasionally to 9 feet.
.TONIGHT...Southwest winds 20 to 30 knots. Waves subsiding to
calm to 2 feet.
.TUESDAY...Southwest winds 20 to 30 knots becoming south 15 to
25 knots by late morning, then veering southwest by mid
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...Southwest winds 15 to 25 knots. Waves calm to
2 feet.
.WEDNESDAY...Southwest winds 15 to 25 knots becoming south 10 to
20 knots in the afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...South winds 15 to 25 knots backing northeast
after midnight. Waves building to 2 to 4 feet.
.THURSDAY...Northeast winds 15 to 25 knots veering east. Waves
building to 3 to 6 feet occasionally to 8 feet.
.FRIDAY...East winds 10 to 20 knots becoming north 15 to
25 knots. A chance of rain showers. Waves subsiding to 2 to
4 feet, then building to 3 to 5 feet occasionally to 7 feet.

$$

LSZ264-022100-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
400 AM EST Mon Mar 2 2026

...GALE WARNING IN EFFECT FROM 10 AM EST THIS MORNING THROUGH
THIS EVENING...

.EARLY THIS MORNING...Southwest winds 10 to 20 knots. Waves 1 to
3 feet.
.TODAY...Southwest winds 20 to 30 knots increasing to gales to
40 knots. Freezing spray in the morning. A slight chance of snow
showers in the morning. Waves building to 7 to 10 feet
occasionally to 13 feet.
.TONIGHT...West winds 20 to 30 knots diminishing to 5 to
15 knots. Waves subsiding to 1 to 3 feet.
.TUESDAY...Southwest winds 5 to 15 knots backing south by late
morning, then veering southwest by mid afternoon. Waves subsiding
to calm to 2 feet.
.TUESDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...Southwest winds 5 to 15 knots backing south in the
afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southeast winds 5 to 15 knots becoming east
10 to 20 knots after midnight. Waves building to 3 to 5 feet
occasionally to 7 feet.
.THURSDAY...East winds 15 to 25 knots. Waves building to 3 to
6 feet occasionally to 8 feet.
.FRIDAY...Southeast winds 15 to 25 knots becoming north 20 to
30 knots. A chance of rain showers. A chance of snow showers.
Waves subsiding to 2 to 4 feet, then building to 4 to 7 feet
occasionally to 9 feet.

$$

LSZ265-022100-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
400 AM EST Mon Mar 2 2026

.EARLY THIS MORNING...South winds 10 to 20 knots. Waves calm to
2 feet.
.TODAY...South winds 15 to 25 knots becoming southwest to
30 knots with a few gale force gusts to 35 knots possible by late
morning, then diminishing to 20 to 30 knots by mid afternoon.
Waves building to 1 to 3 feet, then subsiding to calm to 2 feet.
.TONIGHT...Southwest winds 15 to 25 knots diminishing to 10 to
20 knots by midnight. Waves calm to 2 feet.
.TUESDAY...Southwest winds 5 to 15 knots becoming south 10 to
20 knots. Waves calm to 2 feet.
.TUESDAY NIGHT...West winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. Waves calm to 2 feet.
.WEDNESDAY...Southwest winds 5 to 15 knots becoming southeast
10 to 20 knots in the afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...South winds 10 to 20 knots backing east after
midnight. Waves calm to 2 feet.
.THURSDAY...East winds 10 to 20 knots veering southeast. Waves
building to 3 to 5 feet occasionally to 7 feet.
.FRIDAY...Southeast winds 15 to 25 knots becoming northwest 20 to
30 knots. A chance of rain showers. Waves subsiding to 1 to
3 feet, then building to 3 to 5 feet occasionally to 7 feet.

$$

LSZ266-022100-
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 EST Mon Mar 2 2026

...GALE WARNING IN EFFECT FROM 10 AM EST THIS MORNING THROUGH
THIS EVENING...

.EARLY THIS MORNING...Southwest winds 15 to 25 knots. Waves 2 to
4 feet.
.TODAY...Southwest winds 20 to 30 knots increasing to gales to
35 knots. Freezing spray in the morning. Waves building to 6 to
10 feet occasionally to 13 feet.
.TONIGHT...Southwest winds 20 to 30 knots diminishing to 10 to
20 knots. Waves subsiding to 2 to 4 feet.
.TUESDAY...Southwest winds 10 to 20 knots backing south. Waves
subsiding to calm to 2 feet.
.TUESDAY NIGHT...Southwest winds 10 to 20 knots veering west
after midnight. Waves calm to 2 feet.
.WEDNESDAY...South winds 10 to 20 knots. Waves calm to 2 feet.
.WEDNESDAY NIGHT...South winds 10 to 20 knots backing southeast
after midnight. Waves building to 2 to 4 feet.
.THURSDAY...East winds 15 to 25 knots. Waves building to 3 to
6 feet occasionally to 8 feet.
.FRIDAY...Southeast winds 15 to 25 knots increasing to 20 to
30 knots. A chance of rain showers. Waves subsiding to 2 to
4 feet, then building to 5 to 8 feet occasionally to 10 feet.

$$

LSZ267-022100-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
400 AM EST Mon Mar 2 2026

...GALE WARNING IN EFFECT FROM 10 AM EST THIS MORNING THROUGH
THIS EVENING...

.EARLY THIS MORNING...Southwest winds 10 to 20 knots. Waves 2 to
4 feet.
.TODAY...Southwest winds 20 to 30 knots increasing to gales to
35 knots. Waves building to 5 to 9 feet occasionally to 11 feet.
.TONIGHT...Southwest winds 20 to 30 knots diminishing to 10 to
20 knots. Waves subsiding to 2 to 4 feet.
.TUESDAY...Southwest winds 10 to 20 knots backing south by late
morning, then diminishing to 5 to 15 knots by mid afternoon. A
slight chance of snow showers in the afternoon. Waves subsiding
to calm to 2 feet.
.TUESDAY NIGHT...Southwest winds 5 to 15 knots veering west after
midnight. Waves calm to 2 feet.
.WEDNESDAY...South winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southeast winds 10 to 20 knots. Waves building
to 1 to 3 feet.
.THURSDAY...East winds 10 to 20 knots. Waves building to 2 to
4 feet.
.FRIDAY...Southeast winds 15 to 25 knots increasing to 20 to
30 knots. A chance of rain showers, then rain showers likely.
Waves subsiding to 1 to 3 feet, then building to 5 to 8 feet
occasionally to 10 feet.

$$

LSZ261-021500-
MAFOR 0210/
Superior West...GALE WARNING IN EFFECT...11530 11540 12550 11540
11530 12510. Waves 1 to 2 feet building to 4 to 7 feet today.
Waves 3 to 5 feet subsiding to 1 to 3 feet tonight.

Superior North Central...GALE WARNING IN EFFECT...11520 11540
11551 11550 11650 11640 12620. Waves 1 to 3 feet building to 7 to
11 feet today. Waves 7 to 10 feet subsiding to 3 to 5 feet
tonight.

Superior South Central...GALE WARNING IN EFFECT...11520 11440
12540 11530 13520. Waves 1 to 3 feet building to 3 to 5 feet
today. Waves 2 to 4 feet subsiding to 1 to 3 feet tonight. Wave
heights are for ice free areas.

Superior East...GALE WARNING IN EFFECT...11530 11540 11551 12550
11540 11530 11520. Waves 3 to 5 feet building to 6 to 9 feet
today. Waves 5 to 8 feet subsiding to 3 to 5 feet 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