103
FZUS63 KMQT 061401
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1000 AM 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...

A 29.6 inch low south of James Bay this morning moves across
southern Quebec today, allowing ridging to build 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.



LSZ162-062000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1000 AM EDT Sat Jun 6 2026 /900 AM CDT Sat Jun 6 2026/

.REST OF TODAY...Southwest winds 5 to 15 knots backing south in
the afternoon, then backing east late. Patchy fog. 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 5 to 15 knots increasing to 15 to
25 knots. Patchy fog through early afternoon. Waves building to
2 to 4 feet.
.SUNDAY NIGHT...Northeast winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. Waves subsiding to 1 to 3 feet.
.MONDAY...East winds 10 to 20 knots backing northeast by mid
afternoon. A chance of showers through early afternoon. A slight
chance of thunderstorms. Showers likely by mid afternoon. Waves
subsiding to calm to 2 feet.
.MONDAY NIGHT...East winds 5 to 15 knots backing northeast after
midnight. Showers likely through midnight. A chance of
thunderstorms. Waves calm to 2 feet.
.TUESDAY...Northeast winds 5 to 15 knots. A chance of showers.
Waves calm to 2 feet.
.WEDNESDAY...Northeast winds 10 to 20 knots. A chance of showers.
A chance of thunderstorms. Showers likely. Waves building to 1 to
3 feet.

$$

LSZ263-062000-
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 AM EDT Sat Jun 6 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...

.REST OF TODAY...West winds less than 10 knots backing southwest
in the afternoon, then becoming east 5 to 15 knots late. 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 becoming northeast 10 to
20 knots in the afternoon, then veering east late. Patchy fog
through early afternoon. Waves building to 2 to 4 feet.
.SUNDAY NIGHT...East winds 10 to 20 knots becoming southeast 5 to
15 knots after midnight. 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 2 to
4 feet.
.MONDAY NIGHT...Southeast winds 5 to 15 knots. Showers likely.
Waves subsiding to calm to 2 feet.
.TUESDAY...Northeast winds 5 to 15 knots veering east. Waves calm
to 2 feet.
.WEDNESDAY...East winds 10 to 20 knots veering south. A chance of
showers. Waves building to 2 to 4 feet, then subsiding to 1 to
3 feet.

$$

LSZ264-062000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1000 AM EDT Sat Jun 6 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...

.REST OF TODAY...Northwest winds 5 to 15 knots backing west in
the afternoon. Areas of dense fog. Waves calm to 2 feet.
.TONIGHT...West winds 5 to 15 knots diminishing to less than
10 knots after midnight, then backing east 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...Southeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. 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
showers by mid afternoon. Waves building to 2 to 4 feet.
.MONDAY NIGHT...Southeast winds 10 to 20 knots becoming south
5 to 15 knots after midnight. A chance of showers through
midnight. Showers likely after midnight. Waves subsiding to 1 to
3 feet.
.TUESDAY...East winds 5 to 15 knots veering southeast. Waves
subsiding to calm to 2 feet.
.WEDNESDAY...Southeast winds 10 to 20 knots. A chance of showers.
Waves building to 3 to 5 feet occasionally to 7 feet.

$$

LSZ265-062000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1000 AM EDT Sat Jun 6 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...

.REST OF TODAY...Northwest winds 5 to 15 knots. Patchy fog. Waves
calm to 2 feet.
.TONIGHT...North winds less than 10 knots becoming east 5 to
15 knots after midnight. Patchy dense fog. Waves calm to 2 feet.
.SUNDAY...East winds 5 to 15 knots increasing to 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 15 to 25 knots. 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. A chance of showers through
midnight. Showers likely after midnight. Waves subsiding to 1 to
3 feet.
.TUESDAY...Southeast winds 5 to 15 knots. A chance of showers.
Waves subsiding to calm to 2 feet.
.WEDNESDAY...Southeast winds 15 to 25 knots veering south. A
chance of showers. Waves building to 3 to 5 feet occasionally to
7 feet, then subsiding to 2 to 4 feet.

$$

LSZ266-062000-
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 AM EDT Sat Jun 6 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...

.REST OF TODAY...Northwest winds 10 to 20 knots diminishing to
5 to 15 knots late. Areas of dense fog. Waves calm to 2 feet.
.TONIGHT...Northwest winds 5 to 15 knots veering north after
midnight, then veering east late. Patchy fog through midnight,
then areas of dense fog after midnight. Waves calm to 2 feet.
.SUNDAY...East winds 5 to 15 knots. Patchy fog through early
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...Southeast winds 10 to 20 knots. Waves building to
1 to 3 feet.
.MONDAY...Southeast winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. Waves building to 2 to 4 feet.
.MONDAY NIGHT...Southeast winds 10 to 20 knots. Showers likely
after midnight. Waves subsiding to 1 to 3 feet.
.TUESDAY...Southeast winds 5 to 15 knots. A chance of showers.
Waves subsiding to calm to 2 feet.
.WEDNESDAY...Southeast winds 15 to 25 knots veering south. Waves
building to 3 to 5 feet occasionally to 7 feet.

$$

LSZ267-062000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1000 AM EDT Sat Jun 6 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...

.REST OF TODAY...Northwest winds 10 to 20 knots. Areas of dense
fog. Waves calm to 2 feet.
.TONIGHT...Northwest winds 10 to 20 knots becoming west 5 to
15 knots after midnight, then veering northwest late. Patchy fog.
Waves calm to 2 feet.
.SUNDAY...East winds 5 to 15 knots backing northeast in the
afternoon. Patchy fog through early afternoon. Waves calm to
2 feet.
.SUNDAY NIGHT...Southeast winds 5 to 15 knots increasing to 10 to
20 knots after midnight. Waves building to 1 to 3 feet.
.MONDAY...Southeast winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. Waves building to 2 to 4 feet.
.MONDAY NIGHT...Southeast winds 15 to 25 knots. A chance of
showers after midnight. Waves subsiding to 1 to 3 feet.
.TUESDAY...Southeast winds 5 to 15 knots backing east. Showers
likely. Waves subsiding to calm to 2 feet.
.WEDNESDAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots. Waves building to 2 to 4 feet.

$$

LSZ261-062000-
MAFOR 0615/
Superior West 11500 11400 14200 12210. Waves 1 foot or less.

Superior North Central 11704 12604 12600 11204 11200 11300. Waves
1 foot or less.

Superior South Central 12714 11710 12700 12204 11304. Waves 2
feet or less.

Superior East 13714 11710 12700 11100 11200. Waves 2 feet or
less.

$$

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