957
FZUS63 KMQT 241401
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1001 AM EDT Sat May 24 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 over the Upper Great Lakes strengthens to 30.3
inches by tonight and persists into Monday evening. A 30.0 inch low
pressure lifting through the Lower Midwest decreases the ridge
strength back to 30.2 inches Monday night and lasts into Wednesday
next week. This weak 30.0 inch low then lifts northeast over the
Great Lakes Wednesday night through Thursday.


LSZ162-242000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1001 AM EDT Sat May 24 2025 /901 AM CDT Sat May 24 2025/

.REST OF TODAY...East winds 5 to 15 knots veering southeast in
the afternoon, then backing east late. Isolated rain showers by
mid afternoon. Waves calm to 2 feet.
.TONIGHT...East winds 5 to 15 knots veering west after midnight.
A slight chance of rain showers through midnight. Waves calm to
2 feet.
.SUNDAY...Southwest winds 5 to 15 knots backing east late. Waves
calm to 2 feet.
.SUNDAY NIGHT...East winds 5 to 15 knots backing northeast after
midnight. Waves calm to 2 feet.
.MONDAY...East winds 5 to 15 knots backing northeast by mid
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...Northeast winds 5 to 15 knots. Waves calm to
2 feet.
.TUESDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...Northeast winds 5 to 15 knots backing northwest.
Waves calm to 2 feet.

$$

LSZ263-242000-
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-
1001 AM EDT Sat May 24 2025

.REST OF TODAY...North winds less than 10 knots backing west
late. Waves calm to 2 feet.
.TONIGHT...West winds less than 10 knots. Waves calm to 2 feet.
.SUNDAY...West winds less than 10 knots. Waves calm to 2 feet.
.SUNDAY NIGHT...West winds less than 10 knots. Waves calm to
2 feet.
.MONDAY...West winds 5 to 15 knots veering northeast by mid
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...East winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...Northeast winds 5 to 15 knots backing west. Waves
calm to 2 feet.

$$

LSZ264-242000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1001 AM EDT Sat May 24 2025

.REST OF TODAY...North winds less than 10 knots becoming
northwest 5 to 15 knots in the afternoon, then backing west late.
Waves calm to 2 feet.
.TONIGHT...West winds 5 to 15 knots veering northwest late. A
slight chance of rain showers. Waves calm to 2 feet.
.SUNDAY...Northwest winds 5 to 15 knots backing west in the
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots diminishing to less than
10 knots after midnight. Waves calm to 2 feet.
.MONDAY...West winds less than 10 knots becoming east 5 to
15 knots by mid afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...East winds 5 to 15 knots diminishing to less than
10 knots after midnight. Waves calm to 2 feet.
.TUESDAY...East winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...Northeast winds 5 to 15 knots backing west. Waves
calm to 2 feet.

$$

LSZ265-242000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1001 AM EDT Sat May 24 2025

.REST OF TODAY...Northwest winds 5 to 15 knots increasing to
10 to 20 knots in the afternoon, then becoming north 5 to
15 knots late. Waves calm to 2 feet.
.TONIGHT...Northwest winds 5 to 15 knots backing west late. A
slight chance of rain showers after midnight. Waves calm to
2 feet.
.SUNDAY...West winds 5 to 15 knots becoming northwest 10 to
20 knots in the afternoon, then diminishing to 5 to 15 knots
late. Waves calm to 2 feet.
.SUNDAY NIGHT...Northwest winds 5 to 15 knots backing west after
midnight. Waves calm to 2 feet.
.MONDAY...Northwest winds 5 to 15 knots veering east by mid
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...East winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY...East winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...Northeast winds 5 to 15 knots backing west. Waves
calm to 2 feet.

$$

LSZ266-242000-
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-
1001 AM EDT Sat May 24 2025

.REST OF TODAY...Northwest winds 10 to 20 knots. Waves calm to
2 feet.
.TONIGHT...Northwest winds 5 to 15 knots. A chance of rain
showers. Waves calm to 2 feet.
.SUNDAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots late. Waves calm to 2 feet.
.SUNDAY NIGHT...Northwest winds 5 to 15 knots. Waves calm to
2 feet.
.MONDAY...Northwest winds 5 to 15 knots veering north by mid
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...Northeast winds 5 to 15 knots becoming east less
than 10 knots after midnight. Waves calm to 2 feet.
.TUESDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...North winds 5 to 15 knots backing northwest. Waves
calm to 2 feet.

$$

LSZ267-242000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1001 AM EDT Sat May 24 2025

.REST OF TODAY...Northwest winds 10 to 20 knots. Waves calm to
2 feet.
.TONIGHT...Northwest winds 10 to 20 knots. A chance of rain
showers. Waves calm to 2 feet.
.SUNDAY...Northwest winds 10 to 20 knots backing west late. A
chance of rain showers through early afternoon. Waves calm to
2 feet.
.SUNDAY NIGHT...Northwest winds 5 to 15 knots. Waves calm to
2 feet.
.MONDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet.
.MONDAY NIGHT...North winds 5 to 15 knots veering northeast after
midnight. Waves calm to 2 feet.
.TUESDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...North winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ261-242000-
MAFOR 2415/
Superior West 11200 11300 13100 13600. Waves 1 foot or less.

Superior North Central 12700 13600 13700. Waves around 1 foot.

Superior South Central 15700 11700 11710. Waves 2 feet or less.

Superior East 14710 11710 13700. A chance of rain showers
overnight and Sunday morning. Waves 1 to 2 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