328
FZUS63 KMQT 142001
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
401 PM EDT Sun Jun 14 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...

A 29.8 inch trough departs east of Lake Superior this evening. Weak
ridging of 29.7 inches follows into Monday, but a 29.6 inch trough
moves through the lake late Monday into Tuesday. This trough will
deepen into a 29.5 inch low over northeast Wisconsin Tuesday. This
low will then slowly move east-northeast into Ontario through
Wednesday morning. A low of 29.4 inches moves then through the Great
Lakes region Wednesday night and Thursday.



LSZ162-150800-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
401 PM EDT Sun Jun 14 2026 /301 PM CDT Sun Jun 14 2026/

.LATE THIS AFTERNOON...West winds 10 to 20 knots. Waves calm to
2 feet.
.TONIGHT...West winds 10 to 20 knots. Waves calm to 2 feet.
.MONDAY...Southwest winds 15 to 25 knots diminishing to 10 to
20 knots late. A chance of showers. A slight chance of
thunderstorms by mid afternoon. Waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 1 to 3 feet.
.MONDAY NIGHT...Southwest winds 10 to 20 knots becoming west 5 to
15 knots after midnight, then veering northeast late. A slight
chance of showers and thunderstorms through midnight. Waves
subsiding to calm to 2 feet.
.TUESDAY...Northeast winds 5 to 15 knots. A slight chance of
showers through early afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...West winds less than 10 knots veering north
after midnight. Waves calm to 2 feet.
.WEDNESDAY...East winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Northeast winds 10 to 20 knots backing north
after midnight. A chance of rain showers. Waves calm to 2 feet.
.THURSDAY...West winds 10 to 20 knots. Waves calm to 2 feet.
.FRIDAY...West winds 10 to 20 knots diminishing to 5 to 15 knots.
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 Sun Jun 14 2026

.LATE THIS AFTERNOON...Southwest winds 5 to 15 knots. Waves 1 to
3 feet.
.TONIGHT...West winds 5 to 15 knots increasing to 10 to 20 knots
late. Waves building to 2 to 4 feet.
.MONDAY...West winds 15 to 25 knots backing southwest in the
afternoon, then veering west late. A chance of showers and a
slight chance of thunderstorms by mid afternoon. Waves building
to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to
4 feet.
.MONDAY NIGHT...Southwest winds 5 to 15 knots veering west after
midnight, then veering northeast late. A slight chance of showers
and thunderstorms through midnight. Waves subsiding to calm to
2 feet.
.TUESDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY NIGHT...West winds less than 10 knots backing southwest
after midnight. Waves calm to 2 feet.
.WEDNESDAY...South winds less than 10 knots becoming east 5 to
15 knots by mid afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...East winds 5 to 15 knots backing northeast
after midnight. A chance of rain showers. Waves calm to 2 feet.
.THURSDAY...West winds 5 to 15 knots. Waves building to 1 to
3 feet, then subsiding to calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots. Waves building to 1 to
3 feet, then subsiding to 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 Sun Jun 14 2026

.LATE THIS AFTERNOON...West winds 5 to 15 knots. Waves 1 to
3 feet.
.TONIGHT...Southwest winds 5 to 15 knots veering west after
midnight, then increasing to 10 to 20 knots late. Waves building
to 2 to 4 feet.
.MONDAY...West winds 15 to 25 knots backing southwest in the
afternoon, then veering west late. A chance of showers. A slight
chance of thunderstorms by mid afternoon. Waves building to 3 to
5 feet occasionally to 7 feet.
.MONDAY NIGHT...West winds 5 to 15 knots veering north late. A
slight chance of showers through midnight. Waves subsiding to
calm to 2 feet.
.TUESDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY NIGHT...West winds less than 10 knots backing southwest
after midnight. Waves calm to 2 feet.
.WEDNESDAY...South winds less than 10 knots becoming southeast
5 to 15 knots by mid afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...East winds 5 to 15 knots backing northeast
after midnight. Waves calm to 2 feet.
.THURSDAY...West winds 5 to 15 knots. Waves building to 1 to
3 feet, then subsiding to calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots. Waves building to 1 to
3 feet, then subsiding to calm to 2 feet.

$$

LSZ265-150800-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
401 PM EDT Sun Jun 14 2026

.LATE THIS AFTERNOON...West winds 10 to 20 knots. Waves 1 to
3 feet subsiding to calm to 2 feet.
.TONIGHT...Southwest winds 10 to 20 knots veering west after
midnight, then increasing to 15 to 25 knots late. Waves building
to 1 to 3 feet.
.MONDAY...West winds 15 to 25 knots diminishing to 10 to 20 knots
in the afternoon. Waves 1 to 3 feet.
.MONDAY NIGHT...West winds 10 to 20 knots backing southwest after
midnight, then becoming west 5 to 15 knots late. A slight chance
of showers and thunderstorms through midnight. Waves subsiding to
calm to 2 feet.
.TUESDAY...Northeast winds 5 to 15 knots. A slight chance of
showers. Waves calm to 2 feet.
.TUESDAY NIGHT...Northwest winds 5 to 15 knots backing west after
midnight. Waves calm to 2 feet.
.WEDNESDAY...Southeast winds 5 to 15 knots becoming east 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...East winds 10 to 20 knots backing north after
midnight. A chance of showers. Waves building to 1 to 3 feet.
.THURSDAY...Northwest winds 15 to 25 knots backing west. Waves
building to 2 to 4 feet, then subsiding to 1 to 3 feet.
.FRIDAY...West winds 15 to 25 knots diminishing to 10 to
20 knots. Waves subsiding to 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 Sun Jun 14 2026

.LATE THIS AFTERNOON...West winds 10 to 20 knots. Waves 2 to
4 feet.
.TONIGHT...West winds 10 to 20 knots backing southwest after
midnight, then veering west late. Waves subsiding to calm to
2 feet, then building to 1 to 3 feet.
.MONDAY...West winds 10 to 20 knots backing southwest late. A
slight chance of showers by mid afternoon. Waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet.
.MONDAY NIGHT...Southwest winds 10 to 20 knots becoming west 5 to
15 knots late. A slight chance of showers and thunderstorms
through midnight. Waves subsiding to calm to 2 feet.
.TUESDAY...North winds 5 to 15 knots. A chance of rain showers by
mid afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...Northwest winds 5 to 15 knots. Waves calm to
2 feet.
.WEDNESDAY...West winds 5 to 15 knots backing east by mid
afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...East winds 10 to 20 knots. A chance of rain
showers. Waves building to 1 to 3 feet.
.THURSDAY...Northwest winds 15 to 25 knots. Waves building to
3 to 5 feet occasionally to 7 feet, then subsiding to 2 to
4 feet.
.FRIDAY...West winds 10 to 20 knots. Waves subsiding to 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 Sun Jun 14 2026

.LATE THIS AFTERNOON...West winds 15 to 25 knots. Waves 3 to
5 feet occasionally to 7 feet subsiding to 2 to 4 feet.
.TONIGHT...West winds 15 to 25 knots diminishing to 10 to
20 knots after midnight, then becoming southwest 5 to 15 knots
late. Waves subsiding to calm to 2 feet, then building to 1 to
3 feet.
.MONDAY...Southwest winds 10 to 20 knots veering west in the
afternoon, then becoming southwest 5 to 15 knots late. Waves
building to 2 to 4 feet, then subsiding to 1 to 3 feet.
.MONDAY NIGHT...Southwest winds 10 to 20 knots diminishing to
5 to 15 knots late. A chance of rain showers through midnight.
Waves subsiding to calm to 2 feet.
.TUESDAY...Southwest winds 5 to 15 knots veering north by mid
afternoon. A chance of showers by mid afternoon. Waves calm to
2 feet.
.TUESDAY NIGHT...North winds 5 to 15 knots backing northwest
after midnight. Waves calm to 2 feet.
.WEDNESDAY...West winds 5 to 15 knots backing east by mid
afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...East winds 5 to 15 knots increasing to 10 to
20 knots after midnight. A chance of rain showers. Waves calm to
2 feet.
.THURSDAY...Northwest winds 15 to 25 knots becoming west 10 to
20 knots. A chance of rain showers. Waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet.
.FRIDAY...West winds 15 to 25 knots diminishing to 10 to
20 knots. Waves subsiding to calm to 2 feet.

$$

LSZ261-150200-
MAFOR 1421/
Superior West 11510 14620 13530. Waves 1 to 3 feet tonight. Waves
1 to 3 feet building to 2 to 4 feet Monday.

Superior North Central 11610 12510 12620 11630 12530. Waves 1 to
3 feet tonight. Waves 2 to 4 feet building to 3 to 5 feet Monday.

Superior South Central 11620 11610 11510 11520 14620. Waves 1 to
3 feet tonight. Waves 2 to 4 feet Monday.

Superior East 12620 11610 11510 12520 11620 11510. Waves 2 to 4
feet building to 3 to 5 feet, then subsiding to 2 to 3 feet
tonight. Waves 2 to 4 feet Monday.

$$

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