013
FZUS63 KMQT 032001
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
400 PM EDT Wed Jun 3 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...

High pressure of 30.2 inches centered over Lower Michigan this
afternoon shifts south of the Lower Great Lakes through Thursday.
Meanwhile, a 29.8 inch low approaches from the northwest, moving
over Lake Superior on Thursday. Troughing persists over the lake
through Friday, deepening to near 29.7 inches. Weak ridging of near
29.9 inches returns Saturday assocaited with a weak high of 30.0
inches over eastern Hudson Bay. Sunday, the high builds to 30.1
inches over Quebec while 29.4 inch low pressure spins over
Saskatchewan. Monday, the nigh builds to 30.3 inches over the mouth
of the St. Lawrence River while a 29.6 inch low over northern
Manitoba extends troughing south over the Great Plains.



LSZ162-040800-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
400 PM EDT Wed Jun 3 2026 /300 PM CDT Wed Jun 3 2026/

.LATE THIS AFTERNOON...Southeast winds 5 to 15 knots. Waves calm
to 2 feet.
.TONIGHT...South winds 5 to 15 knots increasing to 10 to 20 knots
late. A chance of showers and a slight chance of thunderstorms
after midnight. Waves calm to 2 feet.
.THURSDAY...South winds 5 to 15 knots veering southwest in the
afternoon. A chance of showers and a slight chance of
thunderstorms. Waves calm to 2 feet.
.THURSDAY NIGHT...Southwest winds 5 to 15 knots veering west
late. A slight chance of showers and thunderstorms through
midnight. Waves calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots. A slight chance of
showers. A slight chance of thunderstorms by mid afternoon. Waves
calm to 2 feet.
.FRIDAY NIGHT...Northeast winds 5 to 15 knots. Waves calm to
2 feet.
.SATURDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.SATURDAY NIGHT...Northeast winds 5 to 15 knots. Waves calm to
2 feet.
.SUNDAY...Northeast winds 10 to 20 knots. Waves building to 2 to
4 feet, then subsiding to calm to 2 feet.
.MONDAY...Northeast winds 5 to 15 knots. A chance of showers.
Waves calm to 2 feet.

$$

LSZ263-040800-
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-
400 PM EDT Wed Jun 3 2026

.LATE THIS AFTERNOON...South winds 10 to 20 knots. Waves calm to
2 feet.
.TONIGHT...South winds 5 to 15 knots increasing to 10 to 20 knots
after midnight. A slight chance of showers after midnight. Waves
calm to 2 feet.
.THURSDAY...South winds 5 to 15 knots veering southwest in the
afternoon, then backing south late. A chance of showers and a
slight chance of thunderstorms. Waves calm to 2 feet.
.THURSDAY NIGHT...Southwest winds 5 to 15 knots veering west
late. A chance of rain showers and a slight chance of
thunderstorms through midnight. Waves calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots backing south by mid
afternoon. A slight chance of rain showers. Waves calm to 2 feet.
.FRIDAY NIGHT...Northeast winds 5 to 15 knots. Waves calm to
2 feet.
.SATURDAY...Northeast winds less than 10 knots. Waves calm to
2 feet.
.SATURDAY NIGHT...Northeast winds less than 10 knots becoming
east 5 to 15 knots after midnight. Waves calm to 2 feet.
.SUNDAY...East winds 10 to 20 knots veering southeast. Waves
building to 2 to 4 feet, then subsiding to calm to 2 feet.
.MONDAY...East winds 5 to 15 knots veering southeast. A chance of
showers. Waves building to 2 to 4 feet, then subsiding to 1 to
3 feet.

$$

LSZ264-040800-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
400 PM EDT Wed Jun 3 2026

.LATE THIS AFTERNOON...South winds 5 to 15 knots. Waves calm to
2 feet.
.TONIGHT...South winds 5 to 15 knots veering southwest late.
Waves calm to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots backing south in the
afternoon. A chance of showers. A slight chance of thunderstorms
by mid afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...South winds 5 to 15 knots veering west late. A
slight chance of thunderstorms through midnight. A slight chance
of rain showers. Waves calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots diminishing to less than
10 knots by mid afternoon. A slight chance of rain showers by mid
afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...Northeast winds less than 10 knots. Waves calm to
2 feet.
.SATURDAY...Northeast winds less than 10 knots backing north by
mid afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...North winds less than 10 knots veering east
after midnight. Waves calm to 2 feet.
.SUNDAY...East winds 5 to 15 knots becoming southeast 10 to
20 knots. Waves calm to 2 feet.
.MONDAY...Southeast winds 10 to 20 knots veering south. Waves
building to 2 to 4 feet.

$$

LSZ265-040800-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
400 PM EDT Wed Jun 3 2026

.LATE THIS AFTERNOON...Southeast winds 10 to 20 knots. Waves calm
to 2 feet.
.TONIGHT...Southeast winds 5 to 15 knots veering southwest after
midnight, then increasing to 10 to 20 knots late. Waves calm to
2 feet.
.THURSDAY...South winds 10 to 20 knots becoming southeast 5 to
15 knots late. A chance of showers. A slight chance of
thunderstorms by mid afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...South winds 10 to 20 knots veering southwest
after midnight. A slight chance of showers and thunderstorms.
Waves calm to 2 feet.
.FRIDAY...Northwest winds 5 to 15 knots veering north by mid
afternoon. A chance of showers. A slight chance of thunderstorms
by mid afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...Northeast winds 5 to 15 knots backing north after
midnight. Waves calm to 2 feet.
.SATURDAY...North winds 5 to 15 knots. Waves calm to 2 feet.
.SATURDAY NIGHT...East winds 5 to 15 knots. Waves calm to 2 feet.
.SUNDAY...East winds 10 to 20 knots veering southeast. Waves calm
to 2 feet.
.MONDAY...Southeast winds 15 to 25 knots. Waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 1 to 3 feet.

$$

LSZ266-040800-
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-
400 PM EDT Wed Jun 3 2026

.LATE THIS AFTERNOON...Southeast winds 5 to 15 knots. Waves calm
to 2 feet.
.TONIGHT...South winds 10 to 20 knots increasing to 15 to
25 knots after midnight. Waves building to 1 to 3 feet.
.THURSDAY...South winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. A chance of showers. Waves subsiding
to calm to 2 feet, then building to 1 to 3 feet.
.THURSDAY NIGHT...South winds 10 to 20 knots becoming southwest
5 to 15 knots late. A slight chance of showers and thunderstorms.
Waves building to 2 to 4 feet, then subsiding to calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots veering northwest by mid
afternoon. A chance of showers. A slight chance of thunderstorms
by mid afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...North winds 5 to 15 knots. Waves calm to 2 feet.
.SATURDAY...North winds 5 to 15 knots backing northwest by mid
afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...Northwest winds 5 to 15 knots veering east
after midnight. Waves calm to 2 feet.
.SUNDAY...East winds 5 to 15 knots becoming southeast 10 to
20 knots. Waves calm to 2 feet.
.MONDAY...Southeast winds 15 to 25 knots veering south. Waves
building to 2 to 4 feet.

$$

LSZ267-040800-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
400 PM EDT Wed Jun 3 2026

.LATE THIS AFTERNOON...Southeast winds 5 to 15 knots. Waves calm
to 2 feet.
.TONIGHT...South winds 10 to 20 knots veering southwest late.
Waves building to 1 to 3 feet.
.THURSDAY...South winds 10 to 20 knots. A slight chance of
showers by mid afternoon. Waves subsiding to calm to 2 feet, then
building to 1 to 3 feet.
.THURSDAY NIGHT...South winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. A chance of showers and a slight chance
of thunderstorms. Waves subsiding to calm to 2 feet.
.FRIDAY...Southwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. A chance of showers. A slight chance
of thunderstorms by mid afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...Northwest winds 5 to 15 knots veering north after
midnight. A chance of rain showers. Waves calm to 2 feet.
.SATURDAY...North winds 5 to 15 knots becoming northwest 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...Northwest winds 5 to 15 knots veering northeast
after midnight. Waves calm to 2 feet.
.SUNDAY...East winds 5 to 15 knots veering southeast. Waves calm
to 2 feet.
.MONDAY...Southeast winds 15 to 25 knots. Waves building to 2 to
4 feet, then subsiding to 1 to 3 feet.

$$

LSZ261-040200-
MAFOR 0321/
Superior West 12310 14420 12510. A chance of showers Thursday.
Waves 2 feet or less.

Superior North Central 13410 13510 11410 11400. A chance of
showers Thursday. Waves 1 to 2 feet.

Superior South Central 11310 11320 11420 11520 13420 11410. A
chance of showers Thursday afternoon. Waves 1 to 3 feet.

Superior East 11400 11410 11420 12520 12420 11410. 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