967
FZUS63 KMQT 090201
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1000 PM EDT Mon Jun 8 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 around 30.0 inches lingers over Lake Superior into
Tuesday. Then, pressure falls to around 29.9 inches over the lake on
Tuesday as 30.2 inch high pressure moves off the Mid Atlantic coast
and 29.5 inch troughing over the Rockies deepens to 29.3 inches over
the Northern Plains. Pressure over the lake continues to deepen to
around 29.5 inches through Wednesday as the low tracks eastward into
NW Ontario at 29.2 inches by Wednesday evening. Pressure holds at
around 29.6 inches over the lake through the end of the week as
another Colorado low lifts into the Great Lakes at around 29.5
inches on Thursday. Weak ridging of 30.0 inches returns to Lake
Superior by the end of the day Saturday.



LSZ162-090800-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1000 PM EDT Mon Jun 8 2026 /900 PM CDT Mon Jun 8 2026/

.REST OF TONIGHT...Northeast winds 5 to 15 knots diminishing to
less than 10 knots late. Patchy fog. A chance of showers. Waves
calm to 2 feet.
.TUESDAY...East winds less than 10 knots increasing to 5 to
15 knots in the afternoon, then backing northeast late. Areas of
dense fog through early afternoon, then patchy fog by mid
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...Northeast winds 5 to 15 knots. A chance of
showers and a slight chance of thunderstorms after midnight.
Waves building to 1 to 3 feet, then subsiding to calm to 2 feet.
.WEDNESDAY...East winds 10 to 20 knots backing northeast by mid
afternoon. A chance of showers through early afternoon. A chance
of thunderstorms. Showers by mid afternoon. Waves building to
1 to 3 feet.
.WEDNESDAY NIGHT...East winds 5 to 15 knots becoming southwest
10 to 20 knots after midnight. Showers likely and a slight chance
of thunderstorms through midnight. Waves building to 2 to 4 feet.
.THURSDAY...Southwest winds 15 to 25 knots. A chance of showers
by mid afternoon. Waves building to 3 to 6 feet occasionally to
8 feet.
.THURSDAY NIGHT...West winds 15 to 25 knots increasing to 20 to
30 knots after midnight. Waves subsiding to 3 to 5 feet
occasionally to 7 feet.
.FRIDAY...Southwest winds 20 to 30 knots becoming west 15 to
25 knots. Waves building to 4 to 7 feet occasionally to 9 feet,
then subsiding to 1 to 3 feet.
.SATURDAY...West winds 15 to 25 knots diminishing to 10 to
20 knots. Waves building to 2 to 4 feet, then subsiding to calm
to 2 feet.

$$

LSZ263-090800-
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 PM EDT Mon Jun 8 2026

.REST OF TONIGHT...Southeast winds 5 to 15 knots veering south
after midnight, then becoming east less than 10 knots late. Areas
of fog. A slight chance of thunderstorms by midnight. A chance of
showers. Waves calm to 2 feet.
.TUESDAY...East winds less than 10 knots increasing to 5 to
15 knots in the afternoon. A slight chance of showers through
early afternoon. Areas of dense fog. Waves calm to 2 feet.
.TUESDAY NIGHT...East winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...East winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. A chance of showers through early
afternoon. A chance of thunderstorms. Showers by mid afternoon.
Waves building to 3 to 5 feet occasionally to 7 feet.
.WEDNESDAY NIGHT...South winds 10 to 20 knots veering southwest
after midnight. Showers likely and a chance of thunderstorms
through midnight, then a slight chance of showers after midnight.
Waves subsiding to 2 to 4 feet, then building to 3 to 5 feet
occasionally to 7 feet.
.THURSDAY...Southwest winds 15 to 25 knots. A chance of showers
by mid afternoon. Waves building to 4 to 7 feet occasionally to
9 feet.
.THURSDAY NIGHT...Southwest winds 15 to 25 knots becoming west
20 to 30 knots after midnight. A chance of showers. Waves
subsiding to 3 to 6 feet occasionally to 8 feet, then building to
5 to 8 feet occasionally to 10 feet.
.FRIDAY...Southwest gales to 35 knots becoming west 15 to
25 knots. Waves subsiding to 3 to 5 feet occasionally to 7 feet.
.SATURDAY...West winds 15 to 25 knots diminishing to 10 to
20 knots. Waves subsiding to calm to 2 feet.

$$

LSZ264-090800-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1000 PM EDT Mon Jun 8 2026

.REST OF TONIGHT...South winds 5 to 15 knots backing southeast
late. Patchy fog. A slight chance of thunderstorms by midnight.
Showers likely. Waves 1 to 3 feet subsiding to calm to 2 feet.
.TUESDAY...East winds less than 10 knots increasing to 5 to
15 knots late. A chance of showers through early afternoon. Areas
of dense fog through early afternoon, then patchy fog by mid
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...East winds 5 to 15 knots veering southeast after
midnight, then backing east late. Waves calm to 2 feet.
.WEDNESDAY...Southeast winds 10 to 20 knots. A chance of showers
and a slight chance of thunderstorms by mid afternoon. Waves
building to 3 to 5 feet occasionally to 7 feet.
.WEDNESDAY NIGHT...Southeast winds 10 to 20 knots veering
southwest after midnight. Showers and a chance of thunderstorms
through midnight, then a chance of showers after midnight. Waves
3 to 5 feet occasionally to 7 feet.
.THURSDAY...Southwest winds 10 to 20 knots. Waves building to
3 to 6 feet occasionally to 8 feet.
.THURSDAY NIGHT...Southwest winds 15 to 25 knots becoming west
20 to 30 knots after midnight. A chance of showers. Waves
building to 5 to 8 feet occasionally to 10 feet.
.FRIDAY...Southwest winds 20 to 30 knots becoming west 15 to
25 knots. Waves subsiding to 3 to 5 feet occasionally to 7 feet.
.SATURDAY...West winds 15 to 25 knots diminishing to 10 to
20 knots. Waves subsiding to calm to 2 feet.

$$

LSZ265-090800-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1000 PM EDT Mon Jun 8 2026

.REST OF TONIGHT...Southeast winds 5 to 15 knots backing east
late. A chance of showers by midnight. A slight chance of
thunderstorms. Showers after midnight. Patchy fog after midnight.
Waves calm to 2 feet.
.TUESDAY...East winds 5 to 15 knots backing northeast in the
afternoon, then veering east late. Patchy fog. A slight chance of
thunderstorms through early afternoon. A chance of showers. Waves
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 increasing to 15 to
25 knots by mid afternoon. A chance of showers and a slight
chance of thunderstorms by mid afternoon. Waves building to 3 to
6 feet occasionally to 8 feet.
.WEDNESDAY NIGHT...Southeast winds 15 to 25 knots veering
southwest after midnight. Showers likely and a slight chance of
thunderstorms through midnight, then a slight chance of showers
after midnight. Waves subsiding to 2 to 4 feet.
.THURSDAY...Southwest winds 10 to 20 knots becoming south 15 to
25 knots by mid afternoon. A chance of showers by mid afternoon.
Waves subsiding to calm to 2 feet, then building to 1 to 3 feet.
.THURSDAY NIGHT...Southwest winds 20 to 30 knots veering west
after midnight. A chance of showers through midnight. Waves
building to 3 to 5 feet occasionally to 7 feet.
.FRIDAY...West winds 20 to 30 knots diminishing to 15 to
25 knots. Waves subsiding to 2 to 4 feet.
.SATURDAY...West winds 15 to 25 knots. Waves subsiding to calm to
2 feet.

$$

LSZ266-090800-
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 PM EDT Mon Jun 8 2026

.REST OF TONIGHT...Southeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight, then backing east late. A chance of
showers by midnight. A slight chance of thunderstorms. Showers
likely after midnight. Patchy fog after midnight. Waves 1 to
3 feet subsiding to calm to 2 feet.
.TUESDAY...East winds 5 to 15 knots backing northeast late.
Patchy fog. Showers likely and a slight chance of thunderstorms
through early afternoon. A chance of showers by mid afternoon.
Waves calm to 2 feet.
.TUESDAY NIGHT...Northeast winds 5 to 15 knots backing north
after midnight, then veering southeast late. A slight chance of
showers through midnight. Waves calm to 2 feet.
.WEDNESDAY...Southeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. A chance of showers and a slight
chance of thunderstorms by mid afternoon. Waves building to 3 to
5 feet occasionally to 7 feet.
.WEDNESDAY NIGHT...Southeast winds 15 to 25 knots veering
southwest after midnight. Showers likely and a slight chance of
thunderstorms through midnight, then a chance of showers after
midnight. Waves building to 3 to 6 feet occasionally to 8 feet.
.THURSDAY...Southwest winds 10 to 20 knots backing south by mid
afternoon. A chance of showers by mid afternoon. Waves subsiding
to 2 to 4 feet.
.THURSDAY NIGHT...Southwest winds 15 to 25 knots becoming west
20 to 30 knots after midnight. A chance of showers. Waves
building to 3 to 6 feet occasionally to 8 feet.
.FRIDAY...West winds 20 to 30 knots becoming southwest 15 to
25 knots. Waves building to 4 to 7 feet occasionally to 9 feet,
then subsiding to 2 to 4 feet.
.SATURDAY...West winds 15 to 25 knots diminishing to 10 to
20 knots. Waves subsiding to 1 to 3 feet.

$$

LSZ267-090800-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1000 PM EDT Mon Jun 8 2026

.REST OF TONIGHT...Southeast winds 10 to 20 knots. Patchy fog
after midnight. A chance of showers and a slight chance of
thunderstorms after midnight. Waves 1 to 3 feet subsiding to calm
to 2 feet.
.TUESDAY...East winds 10 to 20 knots becoming northeast 5 to
15 knots late. Patchy fog. Showers through early afternoon. A
slight chance of thunderstorms. A chance of showers by mid
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...North winds 5 to 15 knots backing northwest
late. A chance of showers. Waves calm to 2 feet.
.WEDNESDAY...East winds 5 to 15 knots becoming southeast 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southeast winds 10 to 20 knots becoming south
15 to 25 knots after midnight. Showers likely and a slight chance
of thunderstorms. Waves building to 2 to 4 feet.
.THURSDAY...Southwest winds 5 to 15 knots backing south by mid
afternoon. Waves subsiding to calm to 2 feet.
.THURSDAY NIGHT...South winds 10 to 20 knots becoming west 15 to
25 knots after midnight. Showers likely through midnight, then a
chance of showers after midnight. Waves building to 2 to 4 feet.
.FRIDAY...West winds 10 to 20 knots backing southwest. Waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
2 to 4 feet.
.SATURDAY...West winds 10 to 20 knots diminishing to 5 to
15 knots. Waves subsiding to 1 to 3 feet.

$$

LSZ261-090800-
MAFOR 0903/
Superior West 11200 11100 11104 12204 11200 19204 12110. A chance
of showers late this evening. Waves 2 feet or less.

Superior North Central 12416 11306 11304 11300 11200 12300. Waves
1 to 3 feet.

Superior South Central 11310 11316 13206 12100 11200. Waves 1 to
2 feet.

Superior East 12320 11310 12216 11106 12100. Waves 1 to 3 feet
overnight and Tuesday. Waves 1 foot or less Tuesday evening.

$$

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