428
FZUS63 KMQT 110201
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1000 PM EDT Tue Mar 10 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...

Tonight, Lake Superior is between a 29.6 inch low over northern
Illinois and a 30.5 inch high over Quebec. The low moves through the
Lower Great Lakes Wednesday at 29.4 inches. Thursday, Lake Superior
will be situated between a 29.3 inch low over the mouth of the St
Lawrence River, a 29.4 inch low over North Dakota, a 30.3 inch high
over the Lower Mississippi River Valley, and a 30.1 inch ridge over
Hudson Bay. The Dakotas low arrives near the lake Friday morning at
near 29.2 inches, then moves into southern Quebec Friday night. A
30.2 inch ridge will then follow across the Upper Great Lakes
Saturday, ahead of an approaching 29.5 inch low that deepens to 29.2
inches over southern Michigan Sunday evening. Monday, the low will
move to the Ontario/Quebec line while 30.4 inch high pressure
overspreads the Northern Plains.


LSZ162-110800-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1000 PM EDT Tue Mar 10 2026 /900 PM CDT Tue Mar 10 2026/

.REST OF TONIGHT...East winds 15 to 25 knots backing northeast
after midnight. Snow likely. Waves 3 to 6 feet occasionally to
8 feet.
.WEDNESDAY...North winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon, then backing northwest late. A chance
of snow through early afternoon. Waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 1 to 3 feet.
.WEDNESDAY NIGHT...Northwest winds 10 to 20 knots veering north
after midnight, then becoming northwest 5 to 15 knots late. Waves
subsiding to calm to 2 feet.
.THURSDAY...East winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. A slight chance of rain and snow showers by mid
afternoon. Waves building to 1 to 3 feet.
.THURSDAY NIGHT...East winds 20 to 30 knots becoming northeast
gales to 35 knots after midnight. Snow showers likely. Freezing
spray after midnight. Waves building to 8 to 11 feet occasionally
to 14 feet.
.FRIDAY...North winds 20 to 30 knots becoming northwest 15 to
25 knots by mid afternoon. Freezing spray through early
afternoon. A chance of snow showers. Waves building to 9 to
12 feet occasionally to 15 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet.
.FRIDAY NIGHT...Northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. Waves subsiding to calm to 2 feet.
.SATURDAY...South winds 5 to 15 knots becoming northeast gales to
35 knots. A chance of snow showers. Freezing spray. Waves
building to 6 to 9 feet occasionally to 11 feet.
.SUNDAY...North gales to 40 knots. Freezing spray. A chance of
snow showers. Waves building to 10 to 14 feet occasionally to
18 feet, then subsiding to 5 to 8 feet occasionally to 10 feet.

$$

LSZ263-110800-
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-
1000 PM EDT Tue Mar 10 2026

.REST OF TONIGHT...East winds 10 to 20 knots backing northeast
after midnight, then increasing to 15 to 25 knots late. Snow
likely. Waves 3 to 6 feet occasionally to 8 feet.
.WEDNESDAY...North winds 15 to 25 knots diminishing to 10 to
20 knots late. Snow likely through early afternoon. Waves
building to 3 to 6 feet occasionally to 8 feet.
.WEDNESDAY NIGHT...North winds 15 to 25 knots diminishing to 5 to
15 knots. Waves subsiding to 1 to 3 feet.
.THURSDAY...North winds 5 to 15 knots becoming east 10 to
20 knots by mid afternoon. Waves subsiding to calm to 2 feet,
then building to 1 to 3 feet.
.THURSDAY NIGHT...East winds 20 to 30 knots increasing to gales
to 35 knots after midnight. A chance of snow showers through
midnight, then snow showers likely after midnight. Freezing spray
after midnight. Waves building to 10 to 14 feet occasionally to
18 feet.
.FRIDAY...Northeast gales to 35 knots becoming north 20 to
30 knots by mid afternoon. Freezing spray. A chance of snow
showers. Waves subsiding to 5 to 8 feet occasionally to 10 feet.
.FRIDAY NIGHT...Northwest winds 10 to 20 knots. Waves subsiding
to 1 to 3 feet.
.SATURDAY...South winds 5 to 15 knots becoming northeast gales to
35 knots. A chance of snow showers. Freezing spray. Waves
subsiding to calm to 2 feet, then building to 7 to 10 feet
occasionally to 13 feet.
.SUNDAY...Northeast gales to 35 knots becoming north gales to
45 knots. Heavy freezing spray. A chance of snow showers. Waves
building to 12 to 17 feet occasionally to 21 feet, then subsiding
to 10 to 14 feet occasionally to 18 feet.

$$

LSZ264-110800-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1000 PM EDT Tue Mar 10 2026

.REST OF TONIGHT...East winds 10 to 20 knots backing northeast
late. A chance of snow by midnight, then snow likely after
midnight. Waves 2 to 4 feet building to 3 to 6 feet occasionally
to 8 feet, then subsiding to 3 to 5 feet occasionally to 7 feet.
.WEDNESDAY...Northeast winds 15 to 25 knots backing north in the
afternoon. A chance of snow. Waves building to 4 to 7 feet
occasionally to 9 feet.
.WEDNESDAY NIGHT...North winds 20 to 30 knots diminishing to
10 to 20 knots. Waves building to 5 to 8 feet occasionally to
10 feet, then subsiding to 2 to 4 feet.
.THURSDAY...North winds 10 to 20 knots veering east by mid
afternoon. Waves subsiding to calm to 2 feet, then building to
1 to 3 feet.
.THURSDAY NIGHT...East gales to 40 knots. Freezing spray. A
chance of snow showers through midnight. Snow showers likely
after midnight. Waves building to 11 to 15 feet occasionally to
19 feet.
.FRIDAY...Northeast gales to 40 knots becoming north gales to
35 knots by mid afternoon. Freezing spray. A chance of snow
showers. Waves building to 12 to 17 feet occasionally to 21 feet,
then subsiding to 6 to 9 feet occasionally to 11 feet.
.FRIDAY NIGHT...North winds 15 to 25 knots. Freezing spray
through midnight. Waves subsiding to 3 to 5 feet occasionally to
7 feet.
.SATURDAY...South winds 5 to 15 knots becoming northeast gales to
35 knots. Freezing spray. A chance of snow showers. Waves
subsiding to calm to 2 feet, then building to 8 to 11 feet
occasionally to 14 feet.
.SUNDAY...Northeast gales to 40 knots becoming north storm force
winds to 50 knots. Heavy freezing spray. A chance of snow
showers. Waves building to 15 to 20 feet occasionally to 25 feet,
then subsiding to 12 to 17 feet occasionally to 21 feet.

$$

LSZ265-110800-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1000 PM EDT Tue Mar 10 2026

.REST OF TONIGHT...East winds 15 to 25 knots backing northeast
late. Snow. Waves 3 to 6 feet occasionally to 8 feet.
.WEDNESDAY...Northeast winds 20 to 30 knots becoming north to
30 knots with a few gale force gusts to 35 knots possible in the
afternoon, then diminishing to 20 to 30 knots late. Freezing
spray. Snow through early afternoon. A chance of snow by mid
afternoon. Waves building to 7 to 10 feet occasionally to
13 feet.
.WEDNESDAY NIGHT...North winds to 30 knots with a few gale force
gusts to 35 knots possible becoming northwest 20 to 30 knots
after midnight, then diminishing to 15 to 25 knots late. Freezing
spray through midnight. Waves building to 8 to 11 feet
occasionally to 14 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet.
.THURSDAY...Northwest winds 15 to 25 knots veering east by mid
afternoon. Waves subsiding to 1 to 3 feet, then building to 2 to
4 feet.
.THURSDAY NIGHT...East gales to 45 knots. Freezing spray. A
chance of snow showers through midnight. Snow showers likely
after midnight. Waves building to 11 to 15 feet occasionally to
19 feet.
.FRIDAY...Northeast gales to 40 knots backing north by mid
afternoon. Freezing spray. Snow showers likely through early
afternoon. A chance of snow showers by mid afternoon. Waves
building to 12 to 17 feet occasionally to 21 feet, then subsiding
to 10 to 14 feet occasionally to 18 feet.
.FRIDAY NIGHT...Northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. Freezing spray. Waves subsiding to
3 to 6 feet occasionally to 8 feet.
.SATURDAY...West winds 10 to 20 knots becoming southeast gales to
35 knots. Freezing spray. A chance of snow showers. Waves
subsiding to calm to 2 feet, then building to 8 to 11 feet
occasionally to 14 feet.
.SUNDAY...Northeast gales to 45 knots backing north. Heavy
freezing spray. A chance of snow showers. Waves building to 17 to
22 feet occasionally to 28 feet.

$$

LSZ266-110800-
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-
1000 PM EDT Tue Mar 10 2026

.REST OF TONIGHT...East winds 20 to 30 knots backing northeast
late. Snow. Waves 3 to 6 feet occasionally to 8 feet.
.WEDNESDAY...Northeast winds 20 to 30 knots becoming north to
30 knots with a few gale force gusts to 35 knots possible in the
afternoon. Freezing spray. Snow. Waves building to 7 to 10 feet
occasionally to 13 feet.
.WEDNESDAY NIGHT...North winds to 30 knots with a few gale force
gusts to 35 knots possible diminishing to 15 to 25 knots. A
slight chance of snow showers through midnight. Freezing spray.
Waves building to 9 to 12 feet occasionally to 15 feet, then
subsiding to 5 to 8 feet occasionally to 10 feet.
.THURSDAY...North winds 15 to 25 knots veering east by mid
afternoon. Waves subsiding to 1 to 3 feet, then building to 2 to
4 feet.
.THURSDAY NIGHT...East gales to 45 knots. Freezing spray. A
chance of snow showers through midnight. Snow showers likely
after midnight. Waves building to 11 to 15 feet occasionally to
19 feet.
.FRIDAY...East gales to 45 knots becoming north gales to 40 knots
by mid afternoon. Freezing spray. Snow showers likely through
early afternoon. A chance of snow showers by mid afternoon. Waves
building to 12 to 17 feet occasionally to 21 feet, then subsiding
to 10 to 14 feet occasionally to 18 feet.
.FRIDAY NIGHT...North winds 20 to 30 knots. Freezing spray. Waves
subsiding to 5 to 8 feet occasionally to 10 feet.
.SATURDAY...Northwest winds 10 to 20 knots becoming southeast
gales to 35 knots. Freezing spray. A chance of snow showers.
Waves subsiding to 1 to 3 feet, then building to 8 to 11 feet
occasionally to 14 feet.
.SUNDAY...Northeast gales to 40 knots becoming north storm force
winds to 55 knots. Heavy freezing spray. A chance of snow
showers. Waves building to 20 to 25 feet occasionally to 31 feet.

$$

LSZ267-110800-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1000 PM EDT Tue Mar 10 2026

.REST OF TONIGHT...East winds 20 to 30 knots diminishing to 15 to
25 knots after midnight, then becoming northeast 20 to 30 knots
late. Snow. Waves 3 to 6 feet occasionally to 8 feet.
.WEDNESDAY...Northeast winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon, then becoming north to 30 knots with a
few gale force gusts to 35 knots possible late. Snow. Freezing
spray by mid afternoon. Waves building to 5 to 8 feet
occasionally to 10 feet.
.WEDNESDAY NIGHT...North winds to 30 knots with a few gale force
gusts to 40 knots possible diminishing to 20 to 30 knots late. A
slight chance of snow showers through midnight. Freezing spray.
Waves building to 7 to 10 feet occasionally to 13 feet, then
subsiding to 4 to 7 feet occasionally to 9 feet.
.THURSDAY...North winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. Waves subsiding to 1 to 3 feet.
.THURSDAY NIGHT...East winds 20 to 30 knots increasing to gales
to 40 knots after midnight. A slight chance of snow showers
through midnight, then snow showers likely after midnight. Heavy
freezing spray after midnight. Waves building to 9 to 12 feet
occasionally to 15 feet.
.FRIDAY...East gales to 40 knots becoming north gales to 35 knots
by mid afternoon. Heavy freezing spray. Snow showers likely.
Waves building to 10 to 14 feet occasionally to 18 feet, then
subsiding to 9 to 12 feet occasionally to 15 feet.
.FRIDAY NIGHT...North winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. Freezing spray. Waves subsiding to 4 to
7 feet occasionally to 9 feet.
.SATURDAY...Northwest winds 10 to 20 knots becoming southeast
20 to 30 knots. Freezing spray. A chance of snow showers. Waves
subsiding to 1 to 3 feet, then building to 5 to 8 feet
occasionally to 10 feet.
.SUNDAY...Northeast gales to 35 knots becoming north gales to
45 knots. Heavy freezing spray. Snow showers likely. A chance of
snow showers. Waves building to 15 to 20 feet occasionally to
25 feet.

$$

LSZ261-110800-
MAFOR 1103/
Superior West 11237 11127 12137 11830 11720 11710 11720. Waves 3
to 6 feet overnight. Waves 3 to 6 feet subsiding to 2 to 4 feet
Wednesday. Waves 2 to 3 feet Wednesday evening.

Superior North Central 12220 11120 11137 11837 12830 11840. Waves
2 to 4 feet building to 3 to 6 feet overnight. Waves 3 to 6 feet
building to 4 to 7 feet Wednesday. Waves 4 to 7 feet Wednesday
evening.

Superior South Central 12237 12137 12847 11840 11851. Waves 3 to
6 feet overnight. Waves 5 to 8 feet building to 6 to 9 feet
Wednesday. Waves 7 to 11 feet Wednesday evening.

Superior East 11230 11237 11137 13147 11847 11851. Waves 3 to 6
feet overnight. Waves 5 to 8 feet Wednesday. Waves 5 to 8 feet
building to 7 to 10 feet Wednesday evening.

$$

WFO MQT

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