831
FZUS63 KMQT 282002
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
401 PM 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 near 30.0 inches over Lake Superior 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.



LSZ162-290800-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
401 PM EDT Tue Jul 28 2026 /301 PM CDT Tue Jul 28 2026/

.LATE THIS AFTERNOON...East winds 5 to 15 knots. Patchy dense
fog. Waves calm to 2 feet.
.TONIGHT...East winds less than 10 knots backing north after
midnight. Patchy fog. Waves calm to 2 feet.
.WEDNESDAY...North 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...Northeast winds less than 10 knots. A slight
chance of showers. Waves calm to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots. A slight chance of
showers and thunderstorms by mid afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...West winds 5 to 15 knots. A chance of showers
through midnight. Showers likely after midnight. Waves calm to
2 feet.
.FRIDAY...West winds 5 to 15 knots backing southwest by mid
afternoon. A chance of showers. Waves calm to 2 feet.
.FRIDAY NIGHT...West winds 5 to 15 knots veering north after
midnight. Waves calm to 2 feet.
.SATURDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.SUNDAY...Northeast winds 10 to 20 knots. Waves calm to 2 feet.

$$

LSZ263-290800-
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 PM EDT Tue Jul 28 2026

.LATE THIS AFTERNOON...Southwest winds 5 to 15 knots. Patchy
dense fog. Waves calm to 2 feet.
.TONIGHT...Southwest winds 5 to 15 knots becoming south less than
10 knots after midnight. Patchy fog. Waves calm to 2 feet.
.WEDNESDAY...South winds less than 10 knots increasing to 5 to
15 knots in the afternoon, then backing east late. Waves calm to
2 feet.
.WEDNESDAY NIGHT...East winds less than 10 knots veering
southeast late. A slight chance of showers after midnight. Waves
calm to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots. A slight chance of
showers and thunderstorms by mid afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Southwest winds 5 to 15 knots. A chance of
showers through midnight. Showers likely after midnight. Waves
calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots. A chance of showers. Waves
calm to 2 feet.
.FRIDAY NIGHT...Southwest winds 5 to 15 knots veering north after
midnight. Waves calm to 2 feet.
.SATURDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.SUNDAY...East winds 5 to 15 knots veering southeast. Waves calm
to 2 feet.

$$

LSZ264-290800-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
401 PM EDT Tue Jul 28 2026

.LATE THIS AFTERNOON...Southwest winds 5 to 15 knots. Areas of
dense fog. Waves calm to 2 feet.
.TONIGHT...Southwest winds less than 10 knots backing south after
midnight. Patchy fog. Waves calm to 2 feet.
.WEDNESDAY...South winds less than 10 knots backing southeast in
the afternoon. 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...South winds 5 to 15 knots. 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. A chance of showers. Waves
calm to 2 feet.
.FRIDAY NIGHT...West winds 5 to 15 knots becoming north less than
10 knots after midnight. Waves calm to 2 feet.
.SATURDAY...North winds less than 10 knots veering northeast.
Waves calm to 2 feet.
.SUNDAY...East winds 5 to 15 knots veering southeast. Waves calm
to 2 feet.

$$

LSZ265-290800-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
401 PM EDT Tue Jul 28 2026

.LATE THIS AFTERNOON...North winds 5 to 15 knots. Patchy fog.
Waves calm to 2 feet.
.TONIGHT...Southwest winds 5 to 15 knots backing southeast after
midnight. Patchy fog after midnight. Waves calm to 2 feet.
.WEDNESDAY...Southeast winds 5 to 15 knots becoming east 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, then veering south late. Waves calm
to 2 feet.
.THURSDAY...South winds 5 to 15 knots becoming southeast 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Southwest winds 10 to 20 knots. A chance of
showers. Waves calm to 2 feet.
.FRIDAY...West winds 10 to 20 knots diminishing to 5 to 15 knots
by mid afternoon. A chance of showers. Waves calm to 2 feet.
.FRIDAY NIGHT...West winds 5 to 15 knots veering north after
midnight. A chance of showers. Waves calm to 2 feet.
.SATURDAY...North winds 5 to 15 knots veering northeast. Waves
calm to 2 feet.
.SUNDAY...Northeast winds 5 to 15 knots veering southeast. Waves
calm to 2 feet.

$$

LSZ266-290800-
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 PM EDT Tue Jul 28 2026

.LATE THIS AFTERNOON...Northwest winds 5 to 15 knots. Patchy fog.
Waves 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 backing east late.
Waves calm to 2 feet.
.WEDNESDAY NIGHT...East winds 5 to 15 knots veering southeast
after midnight, then becoming south 10 to 20 knots late. Waves
calm to 2 feet.
.THURSDAY...South winds 5 to 15 knots backing southeast by mid
afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...South winds 10 to 20 knots becoming southwest
5 to 15 knots after midnight. Waves calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots. A chance of showers. Waves
calm to 2 feet.
.FRIDAY NIGHT...Northwest winds 5 to 15 knots veering north after
midnight. A chance of showers. Waves calm to 2 feet.
.SATURDAY...North winds 5 to 15 knots becoming northeast 10 to
20 knots. Waves calm to 2 feet.
.SUNDAY...Northeast winds 5 to 15 knots veering southeast. Waves
calm to 2 feet.

$$

LSZ267-290800-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
401 PM EDT Tue Jul 28 2026

.LATE THIS AFTERNOON...Northwest winds 15 to 25 knots. Waves 2 to
4 feet.
.TONIGHT...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. Waves subsiding to calm to 2 feet.
.WEDNESDAY...West winds 5 to 15 knots backing east in the
afternoon, then backing north late. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Northeast winds 5 to 15 knots veering south
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. Waves calm to
2 feet.
.FRIDAY...Southwest winds 5 to 15 knots veering west by mid
afternoon. A chance of showers. Waves calm to 2 feet.
.FRIDAY NIGHT...Northwest winds 5 to 15 knots veering north after
midnight. A chance of showers. Waves calm to 2 feet.
.SATURDAY...North winds 5 to 15 knots increasing to 10 to
20 knots. A chance of showers. Waves calm to 2 feet.
.SUNDAY...North winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ261-290200-
MAFOR 2821/
Superior West 11204 13200 11100 11700 11400 11100. Waves 1 foot
or less.

Superior North Central 11504 11500 12400 14300. Waves 1 foot or
less.

Superior South Central 11700 11600 11400 14300 11210. Waves 1
foot or less.

Superior East 11720 12710 11800 11700 11600 12200. Waves 1 to 3
feet subsiding to 1 foot or less tonight. Waves 1 foot or less
Wednesday.

$$

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