001
FZUS63 KMQT 142002
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
401 PM EDT Sat Jun 14 2025

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 averaging 30.2 inches will remain over Lake Superior through
this weekend. Early in the upcoming week, the ridge will shift over
the Northeastern US and North Atlantic while 29.7 inch troughing
evolves over the northern Plains and upper Great Lakes. There is low
confidence on placement and strength of pressure features from
midweek onward.


LSZ162-150800-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
401 PM EDT Sat Jun 14 2025 /301 PM CDT Sat Jun 14 2025/

.LATE THIS AFTERNOON...Northeast winds 10 to 20 knots. Waves 1 to
3 feet.
.TONIGHT...Northeast winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. Waves subsiding to calm to 2 feet.
.SUNDAY...Northeast winds 10 to 20 knots diminishing to 5 to
15 knots late. A slight chance of showers. Waves building to 1 to
3 feet, then subsiding to calm to 2 feet.
.SUNDAY NIGHT...Northeast winds 5 to 15 knots backing north late.
A chance of showers. Waves calm to 2 feet.
.MONDAY...South winds 5 to 15 knots backing east by mid
afternoon. A chance of showers. A slight chance of thunderstorms
by mid afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...East winds 10 to 20 knots backing northeast after
midnight. Showers and a chance of thunderstorms. Waves calm to
2 feet.
.TUESDAY...West winds 10 to 20 knots backing southwest by mid
afternoon. A chance of showers. Waves calm to 2 feet.
.TUESDAY NIGHT...West winds 5 to 15 knots veering north after
midnight. Waves calm to 2 feet.
.WEDNESDAY...Northeast winds 5 to 15 knots becoming northwest
10 to 20 knots. A chance of showers. Waves calm to 2 feet.
.THURSDAY...West winds 10 to 20 knots becoming northeast 5 to
15 knots. A chance of showers. Waves calm to 2 feet.

$$

LSZ263-150800-
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 Sat Jun 14 2025

.LATE THIS AFTERNOON...Northeast winds 5 to 15 knots. Waves calm
to 2 feet.
.TONIGHT...East winds 5 to 15 knots. Waves calm to 2 feet.
.SUNDAY...East winds 5 to 15 knots. A slight chance of showers by
mid afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...East winds 5 to 15 knots becoming northeast less
than 10 knots after midnight, then backing west late. A chance of
showers. Waves calm to 2 feet.
.MONDAY...Southwest winds less than 10 knots becoming east 5 to
15 knots by mid afternoon. A chance of showers. A slight chance
of thunderstorms by mid afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...East winds 5 to 15 knots. Showers and a chance of
thunderstorms. Waves calm to 2 feet.
.TUESDAY...West winds 5 to 15 knots backing southwest by mid
afternoon. A chance of showers. Waves calm to 2 feet.
.TUESDAY NIGHT...Southwest winds 5 to 15 knots veering west after
midnight. Waves calm to 2 feet.
.WEDNESDAY...Northeast winds 5 to 15 knots backing northwest.
Waves calm to 2 feet.
.THURSDAY...North winds 5 to 15 knots veering south. A chance of
showers. Waves calm to 2 feet.

$$

LSZ264-150800-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
401 PM EDT Sat Jun 14 2025

.LATE THIS AFTERNOON...East winds 5 to 15 knots. Waves calm to
2 feet.
.TONIGHT...East winds 5 to 15 knots becoming southeast less than
10 knots after midnight, then backing east late. Waves calm to
2 feet.
.SUNDAY...East winds 5 to 15 knots. Waves calm to 2 feet.
.SUNDAY NIGHT...Southeast winds 5 to 15 knots veering south after
midnight, then becoming southwest less than 10 knots late. A
chance of showers. Waves calm to 2 feet.
.MONDAY...Southwest winds 5 to 15 knots backing southeast by mid
afternoon. A slight chance of showers. Waves calm to 2 feet.
.MONDAY NIGHT...Southeast winds 5 to 15 knots. Showers likely and
a chance of thunderstorms. Waves calm to 2 feet.
.TUESDAY...West winds 5 to 15 knots. A chance of showers. Waves
calm to 2 feet.
.TUESDAY NIGHT...Southwest winds 5 to 15 knots veering west after
midnight. Waves calm to 2 feet.
.WEDNESDAY...Southeast winds 5 to 15 knots veering northwest.
Waves calm to 2 feet.
.THURSDAY...North winds 5 to 15 knots veering south. Waves calm
to 2 feet.

$$

LSZ265-150800-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
401 PM EDT Sat Jun 14 2025

.LATE THIS AFTERNOON...East winds 5 to 15 knots. Waves calm to
2 feet.
.TONIGHT...East winds 5 to 15 knots. Waves calm to 2 feet.
.SUNDAY...East winds 5 to 15 knots increasing to 10 to 20 knots
late. Waves calm to 2 feet.
.SUNDAY NIGHT...Southeast winds 10 to 20 knots becoming south
5 to 15 knots after midnight. A chance of showers. Waves calm to
2 feet.
.MONDAY...South winds 5 to 15 knots becoming east 10 to 20 knots
by mid afternoon. A chance of showers. A slight chance of
thunderstorms by mid afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...Southeast winds 10 to 20 knots veering south
after midnight. Showers likely and a chance of thunderstorms.
Waves calm to 2 feet.
.TUESDAY...Southwest winds 10 to 20 knots veering west by mid
afternoon. A chance of showers and thunderstorms. Waves calm to
2 feet.
.TUESDAY NIGHT...Southwest winds 5 to 15 knots. A chance of
showers. Waves calm to 2 feet.
.WEDNESDAY...East winds 5 to 15 knots becoming northwest 10 to
20 knots. A chance of showers. Waves calm to 2 feet.
.THURSDAY...Northwest winds 10 to 20 knots backing southwest. A
chance of showers. Waves calm to 2 feet.

$$

LSZ266-150800-
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 Sat Jun 14 2025

.LATE THIS AFTERNOON...Northeast winds 5 to 15 knots. Waves calm
to 2 feet.
.TONIGHT...Northeast winds 5 to 15 knots veering east late. Waves
calm to 2 feet.
.SUNDAY...East winds 5 to 15 knots. Waves calm to 2 feet.
.SUNDAY NIGHT...Southeast winds 5 to 15 knots becoming south
10 to 20 knots after midnight, then diminishing to 5 to 15 knots
late. A chance of showers. Waves calm to 2 feet.
.MONDAY...South winds 5 to 15 knots backing southeast by mid
afternoon. A chance of showers. Waves calm to 2 feet.
.MONDAY NIGHT...Southeast winds 5 to 15 knots becoming south
10 to 20 knots after midnight. A chance of showers through
midnight. A chance of thunderstorms. Showers likely after
midnight. Waves calm to 2 feet.
.TUESDAY...South winds 10 to 20 knots veering west by mid
afternoon. A chance of showers and thunderstorms. Waves calm to
2 feet.
.TUESDAY NIGHT...Southwest winds 5 to 15 knots backing south
after midnight. A chance of showers. Waves calm to 2 feet.
.WEDNESDAY...Northeast winds 5 to 15 knots becoming north 10 to
20 knots. A chance of showers. Waves calm to 2 feet.
.THURSDAY...Northwest winds 10 to 20 knots becoming south 5 to
15 knots. A chance of showers. Waves calm to 2 feet.

$$

LSZ267-150800-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
401 PM EDT Sat Jun 14 2025

.LATE THIS AFTERNOON...Northeast winds 10 to 20 knots. Waves calm
to 2 feet.
.TONIGHT...Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.SUNDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.SUNDAY NIGHT...Southeast winds 10 to 20 knots veering south
after midnight. A chance of showers after midnight. Waves calm to
2 feet.
.MONDAY...South winds 10 to 20 knots becoming east 5 to 15 knots
by mid afternoon. A chance of showers. Waves calm to 2 feet.
.MONDAY NIGHT...Southeast winds 10 to 20 knots. A chance of
showers through midnight. A chance of thunderstorms. Showers
likely after midnight. Waves calm to 2 feet.
.TUESDAY...South winds 10 to 20 knots veering west by mid
afternoon. Showers likely through early afternoon. A chance of
thunderstorms. A chance of showers by mid afternoon. Waves calm
to 2 feet.
.TUESDAY NIGHT...West winds 5 to 15 knots backing east after
midnight. A chance of showers. Waves calm to 2 feet.
.WEDNESDAY...North winds 5 to 15 knots increasing to 10 to
20 knots. A chance of showers. Waves calm to 2 feet.
.THURSDAY...Northwest winds 10 to 20 knots. A chance of showers.
Waves calm to 2 feet.

$$

LSZ261-150200-
MAFOR 1421/
Superior West 12110 13100 13110. Waves 1 to 2 feet.

Superior North Central 12200 12300 12200 12210. Waves 1 foot or
less.

Superior South Central 11210 11200 11100 13200 12210. Waves 1
foot or less.

Superior East 15100 11200 11100. Waves 1 foot 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