186
FZUS63 KMQT 060900
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
400 AM EST Fri Mar 6 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...

Lake Superior is currently between a 30.7 inch high over Quebec and
a 29.5 inch low over eastern Colorado. As the high continues to
shift east, the low will elongate across the Mississippi River
Valley, then stretches over Lake Superior at 29.7 inches tonight.
The low then deepens to 29.4 inches over the Ontario/Quebec line
late Saturday morning. As the low further deepens to 29.2 inches
over Quebec Saturday evening, a 30.1 inch high over the central to
southern Plains will project a weak 29.8 inch ridge over the lake.
This ridge is kicked east by a 29.1 inch low that transits northern
Ontario Sunday, reaching northwest Quebec overnight into Monday as a
secondary 29.0 inch low pressure trails behind near the northern
shores of Lake Superior. The low slowly exits the area Monday before
being replaced by a 30.3 inch high over northern Ontario Tuesday.
The high slowly moves into Quebec Wednesday as low pressure moves
into the Lower Midwest.


LSZ162-062100-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
400 AM EST Fri Mar 6 2026 /300 AM CST Fri Mar 6 2026/

.EARLY THIS MORNING...East winds 5 to 15 knots. Patchy fog. A
slight chance of drizzle and flurries. Waves 1 to 3 feet.
.TODAY...East winds 5 to 15 knots backing northeast by mid
afternoon. Patchy fog. A slight chance of drizzle and flurries in
the morning. A chance of rain showers. Waves subsiding to calm to
2 feet.
.TONIGHT...Northeast winds 5 to 15 knots backing northwest by
midnight, then becoming north 10 to 20 knots late. A chance of
rain showers in the evening, then snow showers with rain showers
after midnight. Waves calm to 2 feet.
.SATURDAY...North winds 15 to 25 knots becoming northwest 10 to
20 knots by late morning, then backing southwest by mid
afternoon. A chance of snow showers, possibly mixed with rain in
the morning. Waves calm to 2 feet.
.SATURDAY NIGHT...Southwest winds 20 to 30 knots increasing to
gales to 40 knots after midnight. Waves building to 5 to 8 feet
occasionally to 10 feet.
.SUNDAY...Southwest gales to 35 knots diminishing to 20 to
30 knots in the afternoon. Waves subsiding to 3 to 5 feet
occasionally to 7 feet.
.SUNDAY NIGHT...Southwest winds 20 to 30 knots. Waves subsiding
to 2 to 4 feet.
.MONDAY...West winds 20 to 30 knots becoming north 10 to
20 knots. Waves subsiding to calm to 2 feet, then building to
2 to 4 feet.
.TUESDAY...East winds 20 to 30 knots. A chance of snow showers.
Waves building to 5 to 8 feet occasionally to 10 feet.

$$

LSZ263-062100-
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 Fri Mar 6 2026

.EARLY THIS MORNING...Southeast winds 5 to 15 knots. Patchy fog.
Waves 2 to 4 feet subsiding to 1 to 3 feet.
.TODAY...Southeast winds 5 to 15 knots backing east by mid
afternoon. Patchy fog. Sprinkles, a slight chance of drizzle and
flurries in the morning. A chance of rain showers in the
afternoon. Waves subsiding to calm to 2 feet.
.TONIGHT...Southeast winds 5 to 15 knots becoming north 10 to
20 knots by midnight, then increasing to 15 to 25 knots late. A
chance of rain showers in the evening, then rain showers likely
with pockets of snow showers after midnight. Waves building to
1 to 3 feet.
.SATURDAY...North winds 15 to 25 knots diminishing to 10 to
20 knots by late morning, then becoming west 15 to 25 knots by
mid afternoon. Snow showers likely, possibly mixed with rain
showers in the morning. Waves building to 2 to 4 feet, then
subsiding to calm to 2 feet.
.SATURDAY NIGHT...Southwest gales to 40 knots. Waves building to
6 to 9 feet occasionally to 11 feet.
.SUNDAY...Southwest gales to 40 knots. Waves subsiding to 3 to
6 feet occasionally to 8 feet.
.SUNDAY NIGHT...Southwest winds 20 to 30 knots increasing to
gales to 35 knots after midnight. Waves subsiding to 3 to 6 feet
occasionally to 8 feet.
.MONDAY...West gales to 35 knots becoming north 15 to 25 knots.
Waves subsiding to calm to 2 feet, then building to 3 to 5 feet
occasionally to 7 feet.
.TUESDAY...East winds 15 to 25 knots increasing to gales to
35 knots. A chance of snow showers. Waves building to 5 to 9 feet
occasionally to 11 feet.

$$

LSZ264-062100-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
400 AM EST Fri Mar 6 2026

.EARLY THIS MORNING...Southeast winds 5 to 15 knots. A slight
chance of drizzle, freezing drizzle and flurries. Waves 2 to
4 feet.
.TODAY...Southeast winds 5 to 15 knots. Patchy fog. Flurries in
the morning. A chance of rain showers and drizzle in the
afternoon. Waves subsiding to 1 to 3 feet.
.TONIGHT...Southeast winds 5 to 15 knots backing north by
midnight, then increasing to 15 to 25 knots late. A chance of
rain showers in the evening, then rain showers, possibly mixed
with snow and freezing rain after midnight. Waves subsiding to
calm to 2 feet, then building to 2 to 4 feet.
.SATURDAY...North winds 20 to 30 knots becoming northwest 15 to
25 knots by mid afternoon. Snow showers likely, possibly mixed
with rain showers in the morning. Waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 2 to 4 feet.
.SATURDAY NIGHT...Southwest winds 20 to 30 knots increasing to
gales to 40 knots after midnight. Waves subsiding to 1 to 3 feet,
then building to 6 to 9 feet occasionally to 11 feet.
.SUNDAY...Southwest gales to 45 knots. Waves subsiding to 4 to
7 feet occasionally to 9 feet.
.SUNDAY NIGHT...Southwest gales to 40 knots. Waves subsiding to
3 to 6 feet occasionally to 8 feet, then building to 4 to 7 feet
occasionally to 9 feet.
.MONDAY...West gales to 40 knots becoming north 10 to 20 knots.
Waves subsiding to 1 to 3 feet, then building to 3 to 6 feet
occasionally to 8 feet.
.TUESDAY...Northeast winds 15 to 25 knots becoming east gales to
35 knots. A chance of snow showers. Waves building to 8 to
11 feet occasionally to 14 feet.

$$

LSZ265-062100-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
400 AM EST Fri Mar 6 2026

.EARLY THIS MORNING...Southeast winds 10 to 20 knots. Patchy fog.
Waves calm to 2 feet.
.TODAY...Southeast winds 10 to 20 knots. Patchy fog. Flurries in
the morning. A chance of rain showers in the afternoon. Waves
calm to 2 feet.
.TONIGHT...Southeast winds 10 to 20 knots veering south by
midnight, then veering northwest late. A chance of rain showers
in the evening. A slight chance of thunderstorms. Rain showers
likely after midnight. Waves calm to 2 feet.
.SATURDAY...North winds 20 to 30 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible by late morning,
then becoming northwest 20 to 30 knots by mid afternoon. Snow
showers, possibly mixed with rain and sleet likely in the
morning, then a slight chance of snow showers in the afternoon.
Waves building to 3 to 6 feet occasionally to 8 feet.
.SATURDAY NIGHT...Southwest winds 15 to 25 knots increasing to
gales to 35 knots after midnight. Waves subsiding to 1 to 3 feet,
then building to 3 to 5 feet occasionally to 7 feet.
.SUNDAY...Southwest gales to 40 knots. Waves building to 3 to
6 feet occasionally to 8 feet, then subsiding to 2 to 4 feet.
.SUNDAY NIGHT...Southwest winds 20 to 30 knots increasing to
gales to 40 knots after midnight. Waves building to 3 to 5 feet
occasionally to 7 feet.
.MONDAY...West gales to 40 knots becoming north 15 to 25 knots.
Waves subsiding to calm to 2 feet, then building to 3 to 5 feet
occasionally to 7 feet.
.TUESDAY...Northeast winds 15 to 25 knots becoming east gales to
35 knots. A chance of snow showers. Waves building to 8 to
11 feet occasionally to 14 feet.

$$

LSZ266-062100-
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 Fri Mar 6 2026

.EARLY THIS MORNING...Southeast winds 15 to 25 knots. Patchy fog.
A slight chance of drizzle, freezing drizzle and flurries. Waves
2 to 4 feet.
.TODAY...Southeast winds 15 to 25 knots. Patchy fog. Flurries in
the morning. A chance of rain showers in the afternoon. Waves
2 to 4 feet.
.TONIGHT...Southeast winds 10 to 20 knots veering south by
midnight. A chance of rain showers in the evening. A slight
chance of thunderstorms. Rain showers after midnight. Waves
subsiding to calm to 2 feet, then building to 1 to 3 feet.
.SATURDAY...North winds 20 to 30 knots backing northwest by mid
afternoon. Rain showers, possibly mixed with snow in the morning,
then a slight chance of rain and snow showers in the afternoon.
Waves building to 4 to 8 feet occasionally to 10 feet.
.SATURDAY NIGHT...West winds 15 to 25 knots becoming southwest
gales to 40 knots after midnight. Waves subsiding to 2 to 4 feet,
then building to 5 to 8 feet occasionally to 10 feet.
.SUNDAY...Southwest gales to 45 knots. Waves building to 8 to
11 feet occasionally to 14 feet, then subsiding to 5 to 8 feet
occasionally to 10 feet.
.SUNDAY NIGHT...Southwest gales to 40 knots. Waves subsiding to
4 to 7 feet occasionally to 9 feet, then building to 6 to 9 feet
occasionally to 11 feet.
.MONDAY...West gales to 40 knots becoming north 15 to 25 knots.
Waves subsiding to 2 to 4 feet, then building to 3 to 6 feet
occasionally to 8 feet.
.TUESDAY...Northeast winds 15 to 25 knots becoming east gales to
35 knots. A chance of snow showers. Waves building to 9 to
12 feet occasionally to 15 feet.

$$

LSZ267-062100-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
400 AM EST Fri Mar 6 2026

.EARLY THIS MORNING...Southeast winds 15 to 25 knots. A slight
chance of drizzle, freezing drizzle and flurries. Waves 1 to
3 feet.
.TODAY...Southeast winds 15 to 25 knots. Areas of fog. Sprinkles
and flurries in the morning. A chance of rain showers in the
afternoon. Waves building to 2 to 4 feet, then subsiding to 1 to
3 feet.
.TONIGHT...Southeast winds 15 to 25 knots diminishing to 10 to
20 knots by midnight, then veering south late. A chance of rain
showers in the evening, then rain showers and a slight chance of
thunderstorms after midnight. Waves subsiding to calm to 2 feet.
.SATURDAY...North winds 15 to 25 knots increasing to 20 to
30 knots. Rain showers in the morning. A slight chance of snow
showers. A slight chance of rain showers in the afternoon. Waves
building to 4 to 7 feet occasionally to 9 feet, then subsiding to
3 to 6 feet occasionally to 8 feet.
.SATURDAY NIGHT...West winds 10 to 20 knots becoming southwest
gales to 35 knots after midnight. Waves subsiding to 2 to 4 feet,
then building to 5 to 8 feet occasionally to 10 feet.
.SUNDAY...Southwest gales to 40 knots. Waves building to 7 to
10 feet occasionally to 13 feet, then subsiding to 5 to 8 feet
occasionally to 10 feet.
.SUNDAY NIGHT...Southwest gales to 40 knots. A chance of rain
showers. Waves subsiding to 4 to 7 feet occasionally to 9 feet,
then building to 6 to 9 feet occasionally to 11 feet.
.MONDAY...West gales to 40 knots becoming north 10 to 20 knots.
Waves subsiding to 2 to 4 feet.
.TUESDAY...Northeast winds 10 to 20 knots becoming east gales to
35 knots. A chance of snow showers. Waves building to 7 to
10 feet occasionally to 13 feet.

$$

LSZ261-061500-
MAFOR 0610/
Superior West 14200 11100 11800 11806 11816. A chance of drizzle
this afternoon. Waves 1 to 3 feet today. Waves 1 foot or less
tonight. Wave heights are for ice free areas.

Superior North Central 11320 12310 11320 11310 11410 11600 11827.
Waves 2 to 4 feet today. Waves 1 to 3 feet tonight. Wave heights
are for ice free areas.

Superior South Central 14320 11320 11310 11410 11516. Waves 1 to
3 feet. Wave heights are for ice free areas.

Superior East 14320 11334 11320 11326 11416. Waves 2 to 4 feet
today. Waves 2 to 4 feet subsiding to 1 to 2 feet tonight.

$$

WFO MQT

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weather.gov/mqt/glftable

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weather.gov/greatlakes