592
FZUS63 KMQT 081445
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
945 AM EST Wed Jan 8 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...A 30.7 inch high over the Southern Plains this morning
weakens as it slides east today, resulting in 30.4 inch ridging
over the lake weakening to 30.1 inches by Thursday morning. A 29.7
inch low moving through Hudson Bay Thursday pulls a trough of at
least 29.9 inches through Lake Superior Thursday into Friday.
29.8 inch troughing lingers over the lake Saturday while a
weakening 29.6 inch low moves through the Northern Plains. This
low moves through the Upper Great Lakes Sunday night at 29.8
inches while a 30.5 inch high builds into the Canadian Prairies.
The high then builds into the Plains Monday as troughing weakens
to 30.0 inches over Lake Superior.

LSZ162-082245-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
945 AM EST Wed Jan 8 2025 /845 AM CST Wed Jan 8 2025/

.REST OF TODAY...Northwest winds 5 to 15 knots backing west by
late morning, then becoming southwest 10 to 20 knots by mid
afternoon. Isolated snow showers. Waves calm to 2 feet.
.TONIGHT...Southwest winds 10 to 20 knots. Isolated snow showers
in the evening. Waves building to 2 to 4 feet.
.THURSDAY...Southwest winds 10 to 20 knots. A slight chance of
snow showers. Waves subsiding to calm to 2 feet.
.THURSDAY NIGHT...West winds 10 to 20 knots veering northwest
after midnight. A chance of snow showers. Waves building to 1 to
3 feet.
.FRIDAY...Northwest winds 15 to 25 knots. Waves 1 to 3 feet.
.FRIDAY NIGHT...North winds 10 to 20 knots. Waves subsiding to
calm to 2 feet.
.SATURDAY...Northwest winds 10 to 20 knots becoming north 5 to
15 knots. Waves calm to 2 feet.
.SUNDAY...North winds 10 to 20 knots. Waves calm to 2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ263-082245-
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-
945 AM EST Wed Jan 8 2025

.REST OF TODAY...North winds 5 to 15 knots backing southwest by
mid afternoon. Scattered snow showers. Waves calm to 2 feet.
.TONIGHT...Southwest winds 5 to 15 knots increasing to 10 to
20 knots by midnight. A slight chance of snow showers in the
evening. Waves building to 2 to 4 feet.
.THURSDAY...South winds 10 to 20 knots veering southwest by late
morning, then diminishing to 5 to 15 knots by mid afternoon. A
slight chance of snow showers in the afternoon. Waves subsiding
to 1 to 3 feet.
.THURSDAY NIGHT...West winds 5 to 15 knots becoming northwest
10 to 20 knots after midnight. A chance of snow showers. Waves
1 to 3 feet.
.FRIDAY...Northwest winds 10 to 20 knots. A chance of snow
showers. Waves 1 to 3 feet.
.FRIDAY NIGHT...North winds 10 to 20 knots. A chance of snow
showers. Waves 1 to 3 feet.
.SATURDAY...North winds 5 to 15 knots. Waves subsiding to calm to
2 feet.
.SUNDAY...North winds 5 to 15 knots. Waves building to 1 to
3 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ264-082245-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
945 AM EST Wed Jan 8 2025

.REST OF TODAY...North winds 5 to 15 knots diminishing to less
than 10 knots by late morning, then becoming south 5 to 15 knots
by mid afternoon. Isolated snow showers. Waves calm to 2 feet.
.TONIGHT...South winds 5 to 15 knots veering southwest by
midnight, then backing south late. A slight chance of snow
showers in the evening. Waves building to 2 to 4 feet.
.THURSDAY...South winds 10 to 20 knots becoming southwest 5 to
15 knots by mid afternoon. A slight chance of snow showers in the
afternoon. Waves subsiding to 1 to 3 feet.
.THURSDAY NIGHT...Southwest winds 5 to 15 knots veering west
after midnight. A chance of snow showers. Waves 1 to 3 feet.
.FRIDAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. A chance of snow showers. Waves 1 to
3 feet.
.FRIDAY NIGHT...North winds 10 to 20 knots. A chance of snow
showers. Waves building to 2 to 4 feet.
.SATURDAY...North winds 5 to 15 knots. Waves subsiding to calm to
2 feet.
.SUNDAY...North winds 5 to 15 knots. Waves building to 1 to
3 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ265-082245-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
945 AM EST Wed Jan 8 2025

.REST OF TODAY...North winds 10 to 20 knots becoming northwest
5 to 15 knots. Scattered snow showers. Waves 2 to 4 feet
subsiding to calm to 2 feet.
.TONIGHT...Southwest winds 5 to 15 knots increasing to 10 to
20 knots by midnight. Isolated snow showers in the evening. Waves
calm to 2 feet.
.THURSDAY...South winds 10 to 20 knots. Waves calm to 2 feet.
.THURSDAY NIGHT...Southwest winds 10 to 20 knots. A chance of
snow showers. Waves calm to 2 feet.
.FRIDAY...West winds 10 to 20 knots. A chance of snow showers.
Waves calm to 2 feet.
.FRIDAY NIGHT...Northwest winds 10 to 20 knots veering north
after midnight. A chance of snow showers. Waves building to 1 to
3 feet.
.SATURDAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots. A chance of snow showers. Waves building to 2 to
4 feet, then subsiding to calm to 2 feet.
.SUNDAY...North winds 5 to 15 knots increasing to 10 to 20 knots.
A chance of snow showers. Waves calm to 2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ266-082245-
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-
945 AM EST Wed Jan 8 2025

.REST OF TODAY...North winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. Isolated snow showers. Waves 2 to
4 feet subsiding to calm to 2 feet.
.TONIGHT...South winds 5 to 15 knots veering southwest by
midnight, then becoming south 10 to 20 knots late. A slight
chance of snow showers in the evening. Waves building to 1 to
3 feet.
.THURSDAY...South winds 15 to 25 knots. Waves building to 3 to
5 feet occasionally to 7 feet.
.THURSDAY NIGHT...South winds 15 to 25 knots becoming southwest
10 to 20 knots after midnight. A chance of snow showers. Waves
subsiding to 1 to 3 feet.
.FRIDAY...Southwest winds 10 to 20 knots veering west in the
afternoon. A chance of snow showers. Waves 1 to 3 feet.
.FRIDAY NIGHT...Northwest winds 10 to 20 knots veering north
after midnight. A chance of snow showers. Waves building to 2 to
4 feet.
.SATURDAY...North winds 10 to 20 knots diminishing to 5 to
15 knots. A chance of snow showers. Waves subsiding to calm to
2 feet.
.SUNDAY...North winds 5 to 15 knots increasing to 10 to 20 knots.
A chance of snow showers. Waves building to 1 to 3 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ267-082245-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
945 AM EST Wed Jan 8 2025

.REST OF TODAY...North winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. Isolated snow showers. Waves 1 to
3 feet subsiding to calm to 2 feet.
.TONIGHT...North winds 5 to 15 knots backing southwest by
midnight, then becoming south 10 to 20 knots late. Waves calm to
2 feet.
.THURSDAY...South winds 10 to 20 knots increasing to 15 to
25 knots. Waves building to 2 to 4 feet.
.THURSDAY NIGHT...South winds 15 to 25 knots. A chance of snow
showers. Waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 1 to 3 feet.
.FRIDAY...South winds 15 to 25 knots becoming southwest 10 to
20 knots in the afternoon. Snow showers likely. Waves 1 to
3 feet.
.FRIDAY NIGHT...West winds 10 to 20 knots veering northwest after
midnight. A chance of snow showers. Waves 1 to 3 feet.
.SATURDAY...Northwest winds 10 to 20 knots veering north. Waves
subsiding to calm to 2 feet.
.SUNDAY...Northeast winds 10 to 20 knots. A chance of snow
showers. Waves calm to 2 feet.

Note, wave height forecasts are for ice free areas.

$$
LSZ261-082245-
MAFOR 0816/
Superior West 11610 13510 14520. Waves 2 feet or less this
afternoon. Waves 1 to 3 feet building to 2 to 4 feet tonight.
Waves 2 to 3 feet Thursday morning.

Superior North Central 11800 11600 11400 19407 11410 12520 12420.
Waves 2 feet or less this afternoon. Waves 2 feet or less
building to 2 to 4 feet tonight. Waves 2 to 4 feet Thursday
morning.

Superior South Central 11800 19807 11700 19707 11600 11500 12510
12420. Waves 1 to 3 feet this afternoon and tonight. Waves 1 to 3
feet building to 2 to 4 feet Thursday morning.

Superior East 11810 12800 11700 11400 11510 11420 11430. Waves 2
feet or less this afternoon and tonight. Waves 2 to 4 feet
Thursday morning.

$$

TAP

Experimental modernized open lake forecast is available online at
weather.gov/mqt/glftable

Graphical marine forecasts are available online at:
weather.gov/greatlakes