526
FZUS63 KMQT 280801
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
400 AM EDT Tue Jul 28 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...

Weak ridging builds to near 30.0 inches over Lake Superior this
morning and remains until Thursday morning. The ridging then gives
way to weak troughing of 29.9 inches before becoming weak ridging of
29.9 to 30.0 inches again the rest of this week.



LSZ162-282000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
401 AM EDT Tue Jul 28 2026 /301 AM CDT Tue Jul 28 2026/

...DENSE FOG ADVISORY IN EFFECT UNTIL NOON EDT /11 AM CDT/
TODAY...

.EARLY THIS MORNING...Northwest winds less than 10 knots. Areas
of dense fog. Waves calm to 2 feet.
.TODAY...West winds less than 10 knots becoming south 5 to
15 knots in the afternoon, then backing east late. Patchy fog.
Waves calm to 2 feet.
.TONIGHT...East winds less than 10 knots backing north late.
Patchy fog. Waves calm to 2 feet.
.WEDNESDAY...North winds less than 10 knots becoming east 5 to
15 knots late. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Northeast winds 5 to 15 knots diminishing to
less than 10 knots after midnight. A slight chance of showers and
thunderstorms after midnight. Waves calm to 2 feet.
.THURSDAY...East winds less than 10 knots becoming north 5 to
15 knots by mid afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...West winds 5 to 15 knots. A chance of showers
through midnight. A chance of thunderstorms. Showers likely after
midnight. Waves calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots veering northwest. Waves calm
to 2 feet.
.SATURDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ263-282000-
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-
401 AM EDT Tue Jul 28 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL NOON EDT TODAY...

.EARLY THIS MORNING...North winds less than 10 knots. Areas of
dense fog. Waves calm to 2 feet.
.TODAY...West winds less than 10 knots becoming southwest 5 to
15 knots in the afternoon, then backing south late. Patchy fog.
Waves calm to 2 feet.
.TONIGHT...East winds 5 to 15 knots becoming southeast less than
10 knots after midnight. Patchy fog. Waves calm to 2 feet.
.WEDNESDAY...South winds less than 10 knots becoming southeast
5 to 15 knots in the afternoon, then backing east late. Waves
calm to 2 feet.
.WEDNESDAY NIGHT...East winds 5 to 15 knots. A slight chance of
showers and thunderstorms after midnight. Waves calm to 2 feet.
.THURSDAY...South winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Southwest winds 5 to 15 knots veering west
after midnight. A chance of showers. Waves calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots. Waves calm to 2 feet.
.SATURDAY...Northeast winds 5 to 15 knots diminishing to less
than 10 knots. Waves calm to 2 feet.

$$

LSZ264-282000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
401 AM EDT Tue Jul 28 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL NOON EDT TODAY...

.EARLY THIS MORNING...North winds less than 10 knots. Areas of
dense fog. Waves calm to 2 feet.
.TODAY...North winds less than 10 knots backing southwest in the
afternoon, then increasing to 5 to 15 knots late. Areas of dense
fog. Waves calm to 2 feet.
.TONIGHT...Southwest winds less than 10 knots backing southeast
late. Patchy fog. Waves calm to 2 feet.
.WEDNESDAY...Southeast winds less than 10 knots increasing to
5 to 15 knots in the afternoon, then diminishing to less than
10 knots late. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southeast winds 5 to 15 knots. A slight chance
of showers after midnight. Waves calm to 2 feet.
.THURSDAY...Southeast winds 5 to 15 knots diminishing to less
than 10 knots by mid afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...South winds less than 10 knots becoming west
5 to 15 knots after midnight. A chance of showers. Waves calm to
2 feet.
.FRIDAY...West winds 5 to 15 knots. Waves calm to 2 feet.
.SATURDAY...North winds less than 10 knots. Waves calm to 2 feet.

$$

LSZ265-282000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
401 AM EDT Tue Jul 28 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING...

.EARLY THIS MORNING...North winds 5 to 15 knots. Patchy dense
fog. Waves calm to 2 feet.
.TODAY...North winds 5 to 15 knots. Patchy fog. Waves calm to
2 feet.
.TONIGHT...Southeast winds 5 to 15 knots. Patchy fog after
midnight. Waves calm to 2 feet.
.WEDNESDAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots late. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. A slight chance of showers after
midnight. Waves calm to 2 feet.
.THURSDAY...Southeast winds 5 to 15 knots. Waves calm to 2 feet.
.THURSDAY NIGHT...South winds 5 to 15 knots veering west after
midnight. A chance of showers. Waves calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots. Waves calm to 2 feet.
.SATURDAY...North winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ266-282000-
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-
401 AM EDT Tue Jul 28 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING...

.EARLY THIS MORNING...North winds 10 to 20 knots. Patchy dense
fog. Waves 1 to 3 feet.
.TODAY...North winds 5 to 15 knots backing northwest in the
afternoon. Patchy fog. Waves subsiding to calm to 2 feet.
.TONIGHT...Northwest winds 5 to 15 knots veering north after
midnight, then veering southeast late. Patchy fog. Waves calm to
2 feet.
.WEDNESDAY...Southeast winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southeast winds 5 to 15 knots. Waves calm to
2 feet.
.THURSDAY...Southeast winds 5 to 15 knots. Waves calm to 2 feet.
.THURSDAY NIGHT...Southeast winds 5 to 15 knots veering southwest
after midnight. Waves calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots veering northwest. Waves calm
to 2 feet.
.SATURDAY...North winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ267-282000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
401 AM EDT Tue Jul 28 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING...

.EARLY THIS MORNING...North winds 10 to 20 knots. Waves 1 to
3 feet.
.TODAY...North winds 10 to 20 knots backing northwest in the
afternoon. Waves building to 2 to 4 feet.
.TONIGHT...Northwest winds 10 to 20 knots becoming north 5 to
15 knots after midnight. Waves subsiding to calm to 2 feet.
.WEDNESDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southeast winds 5 to 15 knots. Waves calm to
2 feet.
.THURSDAY...Southeast winds 5 to 15 knots. Waves calm to 2 feet.
.THURSDAY NIGHT...South winds 5 to 15 knots veering southwest
after midnight. Waves calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots veering northwest. Waves
calm to 2 feet.
.SATURDAY...Northwest winds 5 to 15 knots veering north. Waves
calm to 2 feet.

$$

LSZ261-281400-
MAFOR 2809/
Superior West 11704 11604 11500 11400 11204 11200 11100 11200.
Waves 1 foot or less.

Superior North Central 11804 11704 11600 12504 11500 11400 11300.
Waves 1 foot or less.

Superior South Central 11810 19814 12810 11800 11700 11600 11400
11300. Waves 2 feet or less.

Superior East 12820 11810 12720 11710 11810 11800. Waves 1 to 3
feet.

$$

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