271
FZUS63 KMQT 062001
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
400 PM EDT Sat Jun 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...

Ridging builds to 30.1 inches over Lake Superior through Sunday
morning. Meanwhile, a 29.3 inch low forms over the Northern Rockies
today and stretches into the Northern Plains through Sunday night.
By Monday afternoon, expect Lake Superior to be between a 29.8 inch
trough over Minnesota and 30.2 inch high pressure over New England.
The troughing weakens to 29.9 inches before moving over Lake
Superior on Tuesday. Pressure continues to fall over Lake Superior
through Wednesday as a Colorado low lifts through the Northern
Plains towards Lake Winnipeg, strengthening to 29.6 inches by
Wednesday night as the low deepens to 29.2 inches.



LSZ162-070800-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
400 PM EDT Sat Jun 6 2026 /300 PM CDT Sat Jun 6 2026/

.LATE THIS AFTERNOON...East winds 5 to 15 knots. Waves calm to
2 feet.
.TONIGHT...East winds 5 to 15 knots backing northeast after
midnight. Patchy fog. Waves calm to 2 feet.
.SUNDAY...Northeast winds 10 to 20 knots increasing to 15 to
25 knots late. Patchy fog through early afternoon. Waves building
to 2 to 4 feet.
.SUNDAY NIGHT...Northeast winds 10 to 20 knots diminishing to
5 to 15 knots late. A chance of showers after midnight. Waves
subsiding to calm to 2 feet.
.MONDAY...Northeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. A chance of showers through early
afternoon, then showers likely and a slight chance of
thunderstorms by mid afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...Northeast winds 5 to 15 knots. Showers likely
through midnight, then a chance of showers after midnight. Waves
calm to 2 feet.
.TUESDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY NIGHT...Northeast winds 5 to 15 knots. A chance of
showers. Waves calm to 2 feet.
.WEDNESDAY...Northeast winds 10 to 20 knots veering southwest. A
chance of thunderstorms. Showers. Waves building to 2 to 4 feet.
.THURSDAY...Southwest winds 15 to 25 knots. A chance of showers.
Waves building to 3 to 5 feet occasionally to 7 feet.

$$

LSZ263-070800-
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 EDT Sat Jun 6 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...

.LATE THIS AFTERNOON...Southwest winds 5 to 15 knots. Patchy fog.
Waves calm to 2 feet.
.TONIGHT...East winds 5 to 15 knots. Patchy fog. Waves calm to
2 feet.
.SUNDAY...East winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon. Waves building to 2 to 4 feet.
.SUNDAY NIGHT...East winds 10 to 20 knots veering southeast after
midnight, then diminishing to 5 to 15 knots late. Waves subsiding
to calm to 2 feet.
.MONDAY...East winds 5 to 15 knots. A chance of showers. A slight
chance of thunderstorms by mid afternoon. Waves building to 1 to
3 feet.
.MONDAY NIGHT...Southeast winds 5 to 15 knots. Showers likely.
Waves subsiding to calm to 2 feet.
.TUESDAY...East winds less than 10 knots becoming northeast 5 to
15 knots by mid afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...East winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...East winds 10 to 20 knots veering south. A chance of
showers and thunderstorms. Waves building to 2 to 4 feet.
.THURSDAY...Southwest winds 15 to 25 knots. A chance of showers.
Waves building to 3 to 6 feet occasionally to 8 feet.

$$

LSZ264-070800-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
400 PM EDT Sat Jun 6 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...

.LATE THIS AFTERNOON...West winds 5 to 15 knots. Patchy fog.
Waves calm to 2 feet.
.TONIGHT...West winds 5 to 15 knots becoming east less than
10 knots after midnight. Patchy fog. Waves calm to 2 feet.
.SUNDAY...Southeast winds 5 to 15 knots backing east in the
afternoon. Patchy fog through early afternoon. Waves calm to
2 feet.
.SUNDAY NIGHT...East winds 10 to 20 knots veering southeast after
midnight, then diminishing to 5 to 15 knots late. Waves building
to 1 to 3 feet, then subsiding to calm to 2 feet.
.MONDAY...Southeast winds 10 to 20 knots. A slight chance of rain
showers by mid afternoon. Waves building to 2 to 4 feet.
.MONDAY NIGHT...Southeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. A chance of showers through
midnight, then showers likely after midnight. Waves subsiding to
1 to 3 feet.
.TUESDAY...East winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. A chance of showers. Waves subsiding
to calm to 2 feet.
.TUESDAY NIGHT...East winds 5 to 15 knots veering southeast after
midnight. Waves calm to 2 feet.
.WEDNESDAY...Southeast winds 10 to 20 knots veering south. A
chance of showers and thunderstorms. Waves building to 3 to
6 feet occasionally to 8 feet.
.THURSDAY...Southwest winds 10 to 20 knots increasing to 15 to
25 knots. A chance of showers. Waves subsiding to 2 to 4 feet,
then building to 3 to 6 feet occasionally to 8 feet.

$$

LSZ265-070800-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
400 PM EDT Sat Jun 6 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM EDT SUNDAY...

.LATE THIS AFTERNOON...North winds 5 to 15 knots. Patchy fog.
Waves calm to 2 feet.
.TONIGHT...Northwest winds 5 to 15 knots becoming east less than
10 knots after midnight, then increasing to 5 to 15 knots late.
Patchy fog. Waves calm to 2 feet.
.SUNDAY...Southeast winds 5 to 15 knots becoming east 10 to
20 knots in the afternoon. Patchy fog through early afternoon.
Waves building to 1 to 3 feet.
.SUNDAY NIGHT...Southeast winds 10 to 20 knots. Waves subsiding
to calm to 2 feet.
.MONDAY...Southeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. Waves building to 3 to 5 feet
occasionally to 7 feet.
.MONDAY NIGHT...Southeast winds 15 to 25 knots diminishing to
5 to 15 knots after midnight. Showers likely after midnight.
Waves subsiding to calm to 2 feet.
.TUESDAY...Southeast winds 5 to 15 knots becoming east 10 to
20 knots by mid afternoon. A chance of showers. Waves calm to
2 feet.
.TUESDAY NIGHT...East winds 10 to 20 knots becoming south 5 to
15 knots after midnight. Waves calm to 2 feet.
.WEDNESDAY...Southeast winds 15 to 25 knots increasing to 20 to
30 knots. A chance of showers and thunderstorms. Waves building
to 3 to 6 feet occasionally to 8 feet.
.THURSDAY...South winds 15 to 25 knots veering southwest. A
chance of showers and thunderstorms. Waves subsiding to 1 to
3 feet, then building to 2 to 4 feet.

$$

LSZ266-070800-
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 EDT Sat Jun 6 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM EDT SUNDAY...

.LATE THIS AFTERNOON...Northwest winds 5 to 15 knots. Patchy
dense fog. Waves calm to 2 feet.
.TONIGHT...Northwest winds 5 to 15 knots veering north after
midnight, then becoming east less than 10 knots late. Patchy fog.
Waves calm to 2 feet.
.SUNDAY...Southeast winds 5 to 15 knots backing east in the
afternoon. Patchy fog through early afternoon. Waves calm to
2 feet.
.SUNDAY NIGHT...East winds 10 to 20 knots veering southeast after
midnight. Waves calm to 2 feet.
.MONDAY...Southeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. Waves building to 2 to 4 feet.
.MONDAY NIGHT...Southeast winds 10 to 20 knots. A chance of
showers. Waves subsiding to 1 to 3 feet.
.TUESDAY...Southeast winds 10 to 20 knots backing east by mid
afternoon. A chance of showers. Waves subsiding to calm to
2 feet.
.TUESDAY NIGHT...East winds 10 to 20 knots veering southeast
after midnight. Waves calm to 2 feet.
.WEDNESDAY...Southeast winds 15 to 25 knots veering south. A
chance of showers and thunderstorms. Waves building to 3 to
6 feet occasionally to 8 feet.
.THURSDAY...South winds 15 to 25 knots veering southwest. A
chance of showers. Waves subsiding to 2 to 4 feet, then building
to 3 to 5 feet occasionally to 7 feet.

$$

LSZ267-070800-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
400 PM EDT Sat Jun 6 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM EDT SUNDAY...

.LATE THIS AFTERNOON...Northwest winds 10 to 20 knots. Areas of
dense fog. Waves 1 to 3 feet.
.TONIGHT...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then veering northeast late. Patchy fog.
Waves subsiding to calm to 2 feet.
.SUNDAY...East winds 5 to 15 knots backing north in the
afternoon, then veering northeast late. Patchy fog through early
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...East winds 5 to 15 knots veering southeast after
midnight, then increasing to 10 to 20 knots late. Waves calm to
2 feet.
.MONDAY...Southeast winds 10 to 20 knots. Waves building to 2 to
4 feet.
.MONDAY NIGHT...Southeast winds 10 to 20 knots increasing to
15 to 25 knots after midnight. A chance of showers after
midnight. Waves subsiding to 1 to 3 feet.
.TUESDAY...Southeast winds 10 to 20 knots. Showers likely through
early afternoon, then a chance of showers by mid afternoon. Waves
subsiding to calm to 2 feet.
.TUESDAY NIGHT...Southeast winds 10 to 20 knots. A chance of
showers. Waves calm to 2 feet.
.WEDNESDAY...Southeast winds 10 to 20 knots. A chance of showers
and thunderstorms. Waves building to 2 to 4 feet.
.THURSDAY...South winds 15 to 25 knots. A chance of showers.
Waves subsiding to calm to 2 feet, then building to 2 to 4 feet.

$$

LSZ261-070200-
MAFOR 0621/
Superior West 11300 13200 11110 11210 12120. Waves 1 foot or less
tonight. Waves 2 feet or less building to 2 to 3 feet Sunday.

Superior North Central 12600 11700 12200 11300 12310. Waves 1
foot or less.

Superior South Central 11710 12700 12200 11300 11320 11220. Waves
2 feet or less.

Superior East 11724 12710 11800 11100 11200 11300 11100. Waves 1
to 3 feet tonight. Waves 1 foot 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