564
FZUS63 KMQT 142101
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
400 PM EST Sat Feb 14 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 weak 29.9 inch trough moves into the Upper Great Lakes this
evening. This is followed by weak 29.9 inch ridging Sunday ahead of
a deeper 29.8 inch trough moving over the lake on Monday. Ridging
builds to 30.2 inches over the lake on Tuesday, giving way to
pressure falls into the middle of the week as a 29.3 inch low lifts
off of the Central Rockies into the Upper Midwest by Wednesday.


LSZ162-150900-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
400 PM EST Sat Feb 14 2026 /300 PM CST Sat Feb 14 2026/

.LATE THIS AFTERNOON...Southwest winds 5 to 15 knots. Waves calm
to 2 feet.
.TONIGHT...West winds 5 to 15 knots veering northwest late. Waves
calm to 2 feet.
.SUNDAY...North winds 5 to 15 knots veering south. Waves calm to
2 feet.
.SUNDAY NIGHT...South winds 5 to 15 knots veering southwest by
midnight. A slight chance of rain showers in the evening. A
chance of snow showers. Waves calm to 2 feet.
.MONDAY...Northwest winds 5 to 15 knots backing west in the
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...West winds 5 to 15 knots veering northeast after
midnight. Waves calm to 2 feet.
.TUESDAY...East winds 10 to 20 knots increasing to gales to
35 knots in the afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...East gales to 40 knots increasing to storm force
winds to 50 knots after midnight. A chance of snow in the
evening. Snow likely after midnight. Waves calm to 2 feet.
.WEDNESDAY...Northeast storm force winds to 55 knots diminishing
to gales to 45 knots. Rain, snow. Waves calm to 2 feet.
.THURSDAY...Northeast winds 20 to 30 knots. A chance of snow
showers. Waves calm to 2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ263-150900-
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 PM EST Sat Feb 14 2026

.LATE THIS AFTERNOON...Southwest winds less than 10 knots. Waves
calm to 2 feet.
.TONIGHT...West winds less than 10 knots veering north late.
Patchy fog after midnight. Waves calm to 2 feet.
.SUNDAY...North winds less than 10 knots backing southwest by
late morning, then backing south by mid afternoon. Patchy dense
fog in the morning. Waves calm to 2 feet.
.SUNDAY NIGHT...South winds 5 to 15 knots veering southwest by
midnight. A chance of snow showers. A slight chance of rain
showers after midnight. Waves calm to 2 feet.
.MONDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet.
.MONDAY NIGHT...West winds less than 10 knots veering north after
midnight. Waves calm to 2 feet.
.TUESDAY...East winds 5 to 15 knots increasing to 20 to 30 knots
in the afternoon. Waves building to 2 to 4 feet.
.TUESDAY NIGHT...East gales to 45 knots. A chance of snow in the
evening, then snow, possibly mixed with rain after midnight.
Waves building to 9 to 12 feet occasionally to 15 feet.
.WEDNESDAY...East storm force winds to 50 knots backing
northeast. Snow likely with pockets of rain, then a chance of
snow showers. Waves building to 10 to 14 feet occasionally to
18 feet, then subsiding to 7 to 10 feet occasionally to 13 feet.
.THURSDAY...Northeast gales to 35 knots diminishing to 20 to
30 knots. A chance of snow showers. Waves subsiding to 3 to
6 feet occasionally to 8 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ264-150900-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
400 PM EST Sat Feb 14 2026

.LATE THIS AFTERNOON...Southwest winds 5 to 15 knots. Waves calm
to 2 feet.
.TONIGHT...Southwest winds 5 to 15 knots veering northwest by
midnight, then veering north late. Patchy fog after midnight.
Waves calm to 2 feet.
.SUNDAY...North winds 5 to 15 knots becoming southwest less than
10 knots by mid afternoon. Patchy dense fog in the morning. Waves
calm to 2 feet.
.SUNDAY NIGHT...South winds 5 to 15 knots veering southwest late.
Snow showers likely after midnight. Waves calm to 2 feet.
.MONDAY...West winds 5 to 15 knots veering northwest in the
afternoon. A slight chance of snow showers in the morning. Waves
calm to 2 feet.
.MONDAY NIGHT...West winds less than 10 knots veering northwest
after midnight. Waves calm to 2 feet.
.TUESDAY...Northeast winds 5 to 15 knots becoming east 15 to
25 knots in the afternoon. Waves building to 2 to 4 feet.
.TUESDAY NIGHT...East gales to 45 knots. A chance of snow. Waves
building to 9 to 12 feet occasionally to 15 feet.
.WEDNESDAY...East storm force winds to 55 knots diminishing to
gales to 45 knots. Freezing spray. Snow likely. A chance of snow
showers. Waves building to 10 to 14 feet occasionally to 18 feet,
then subsiding to 7 to 10 feet occasionally to 13 feet.
.THURSDAY...Northeast gales to 35 knots diminishing to 20 to
30 knots. Freezing spray. Waves subsiding to 3 to 6 feet
occasionally to 8 feet, then building to 4 to 7 feet occasionally
to 9 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ265-150900-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
400 PM EST Sat Feb 14 2026

.LATE THIS AFTERNOON...South winds 10 to 20 knots. Waves calm to
2 feet.
.TONIGHT...South winds 10 to 20 knots veering west by midnight,
then veering northwest late. Patchy dense fog after midnight.
Waves calm to 2 feet.
.SUNDAY...Northwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...South winds 5 to 15 knots increasing to 10 to
20 knots by midnight. A chance of snow showers after midnight.
Waves calm to 2 feet.
.MONDAY...South winds 10 to 20 knots veering northwest in the
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY...East winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon. Waves building to 2 to 4 feet.
.TUESDAY NIGHT...East gales to 45 knots. Snow likely after
midnight. Waves building to 9 to 12 feet occasionally to 15 feet.
.WEDNESDAY...East storm force winds to 50 knots diminishing to
gales to 40 knots. Snow, possibly mixed with rain, then a chance
of snow showers. Waves building to 10 to 14 feet occasionally to
18 feet, then subsiding to 6 to 9 feet occasionally to 11 feet.
.THURSDAY...Northeast gales to 35 knots. A chance of snow
showers. Waves subsiding to 3 to 6 feet occasionally to 8 feet,
then building to 4 to 7 feet occasionally to 9 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ266-150900-
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 PM EST Sat Feb 14 2026

.LATE THIS AFTERNOON...South winds 10 to 20 knots. Waves 1 to
3 feet.
.TONIGHT...South winds 10 to 20 knots veering southwest late.
Patchy fog after midnight. Waves subsiding to calm to 2 feet.
.SUNDAY...Northwest winds 10 to 20 knots becoming north 5 to
15 knots by late morning, then backing northwest by mid
afternoon. Patchy fog in the morning. Waves calm to 2 feet.
.SUNDAY NIGHT...South winds 5 to 15 knots increasing to 10 to
20 knots by midnight. A chance of snow showers after midnight.
Waves building to 1 to 3 feet.
.MONDAY...South winds 10 to 20 knots veering northwest in the
afternoon. A slight chance of rain and snow showers in the
morning. Waves subsiding to calm to 2 feet.
.MONDAY NIGHT...Northwest winds 5 to 15 knots. Waves calm to
2 feet.
.TUESDAY...Northeast winds 5 to 15 knots becoming east 10 to
20 knots in the afternoon. Waves building to 2 to 4 feet.
.TUESDAY NIGHT...East gales to 45 knots. A chance of snow. Waves
building to 9 to 12 feet occasionally to 15 feet.
.WEDNESDAY...East storm force winds to 55 knots diminishing to
gales to 45 knots. Snow likely, then a chance of snow showers.
Freezing spray. Waves building to 10 to 14 feet occasionally to
18 feet, then subsiding to 6 to 9 feet occasionally to 11 feet.
.THURSDAY...East gales to 35 knots becoming northeast 20 to
30 knots. Freezing spray. A chance of snow showers. Waves
subsiding to 3 to 6 feet occasionally to 8 feet, then building to
4 to 7 feet occasionally to 9 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ267-150900-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
400 PM EST Sat Feb 14 2026

.LATE THIS AFTERNOON...South winds 10 to 20 knots. Waves calm to
2 feet.
.TONIGHT...South winds 10 to 20 knots. Patchy fog after midnight.
Waves calm to 2 feet.
.SUNDAY...South winds 5 to 15 knots backing east by late morning,
then becoming southeast less than 10 knots by mid afternoon.
Patchy fog in the morning. Waves calm to 2 feet.
.SUNDAY NIGHT...South winds 5 to 15 knots increasing to 10 to
20 knots late. A chance of snow showers after midnight. Waves
calm to 2 feet.
.MONDAY...South winds 10 to 20 knots veering west in the
afternoon. A chance of rain and snow showers in the morning.
Waves calm to 2 feet.
.MONDAY NIGHT...Northwest winds 5 to 15 knots. Waves calm to
2 feet.
.TUESDAY...Northeast winds 5 to 15 knots veering east in the
afternoon. Waves building to 1 to 3 feet.
.TUESDAY NIGHT...East winds 20 to 30 knots increasing to gales to
40 knots after midnight. A chance of snow. Waves building to 5 to
8 feet occasionally to 10 feet.
.WEDNESDAY...East gales to 45 knots. Snow likely. A chance of
snow showers. Waves subsiding to 3 to 6 feet occasionally to
8 feet.
.THURSDAY...East gales to 35 knots diminishing to 20 to 30 knots.
A chance of snow showers. Waves subsiding to 2 to 4 feet, then
building to 3 to 5 feet occasionally to 7 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ261-150300-
MAFOR 1422/
Superior West 11500 12600 11700 11800 11100 11400 11500. Waves
omitted due to the lake being mostly ice covered.

Superior North Central 11400 11500 12700 13800 11600. Waves 1
foot or less. Wave heights are for ice free areas.

Superior South Central 12420 11510 11610 14710. Waves 2 feet or
less. Wave heights are for ice free areas.

Superior East 13420 11410 19414 11400 19404 11300 11200 11100.
Waves 1 to 3 feet tonight. Waves 2 feet or less Sunday.

$$

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