653
FZUS63 KMQT 080242
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
942 PM EST Fri Feb 7 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 30.3 inch ridge is centered over the Lower Great
Lakes tonight. Late Saturday, a 29.8 inch low passes through the
Ohio Valley, extending weak a 30.1 inch trough over the lake. 30.4
inch ridging builds over the Upper Midwest on Sunday. A 30.9 inch
high builds into the Northern Plains Monday and Tuesday. This
high will maintain ridging over Lake Superior around 30.5 inches
through Tuesday night. A weak 30.1 inch trough then passes over
the lake Wednesday.



LSZ162-081045-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
942 PM EST Fri Feb 7 2025 /842 PM CST Fri Feb 7 2025/

.REST OF TONIGHT...West winds 10 to 20 knots becoming northwest
5 to 15 knots by midnight, then veering north late. Scattered
snow showers after midnight. Waves 1 to 3 feet subsiding to calm
to 2 feet.
.SATURDAY...Northeast winds 5 to 15 knots backing north by late
morning, then increasing to 10 to 20 knots by mid afternoon. Snow
likely in the morning, then a chance of snow in the afternoon.
Waves building to 1 to 3 feet.
.SATURDAY NIGHT...Northwest winds 15 to 25 knots diminishing to
10 to 20 knots late. A slight chance of snow in the evening.
Waves building to 2 to 4 feet, then subsiding to 1 to 3 feet.
.SUNDAY...West winds 10 to 20 knots. Waves 1 to 3 feet.
.SUNDAY NIGHT...West winds 10 to 20 knots veering northwest after
midnight. Waves subsiding to calm to 2 feet.
.MONDAY...West winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon. Waves building to 1 to 3 feet.
.MONDAY NIGHT...West winds 15 to 25 knots veering northwest after
midnight. Waves building to 2 to 4 feet, then subsiding to 1 to
3 feet.
.TUESDAY...West winds 10 to 20 knots. Waves subsiding to calm to
2 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots veering west. Waves
calm to 2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ263-081045-
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-
942 PM EST Fri Feb 7 2025

.REST OF TONIGHT...West winds 10 to 20 knots becoming northwest
5 to 15 knots by midnight, then veering north late. Isolated snow
showers late in the evening. A chance of snow after midnight.
Waves 2 to 4 feet subsiding to calm to 2 feet.
.SATURDAY...North winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. A chance of snow. Waves building to
1 to 3 feet.
.SATURDAY NIGHT...Northwest winds 10 to 20 knots increasing to
15 to 25 knots by midnight, then diminishing to 10 to 20 knots
late. A chance of snow. Waves building to 2 to 4 feet.
.SUNDAY...Northwest winds 10 to 20 knots backing west in the
afternoon. A slight chance of snow showers. Waves 2 to 4 feet.
.SUNDAY NIGHT...West winds 10 to 20 knots veering northwest after
midnight. Waves subsiding to 1 to 3 feet.
.MONDAY...West winds 10 to 20 knots. Waves building to 2 to
4 feet.
.MONDAY NIGHT...West winds 15 to 25 knots becoming northwest
20 to 30 knots after midnight. Waves building to 3 to 6 feet
occasionally to 8 feet.
.TUESDAY...Northwest winds 10 to 20 knots becoming west 5 to
15 knots. Waves subsiding to calm to 2 feet, then building to
1 to 3 feet.
.WEDNESDAY...Southwest winds 5 to 15 knots veering west. Waves
1 to 3 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ264-081045-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
942 PM EST Fri Feb 7 2025

.REST OF TONIGHT...Northwest winds 10 to 20 knots diminishing to
5 to 15 knots by midnight, then veering north late. A slight
chance of snow showers. Waves 3 to 5 feet occasionally to 7 feet
subsiding to calm to 2 feet.
.SATURDAY...North winds 5 to 15 knots. A slight chance of snow.
Waves calm to 2 feet.
.SATURDAY NIGHT...North winds 10 to 20 knots backing northwest by
midnight. A chance of snow. Waves building to 3 to 5 feet
occasionally to 7 feet.
.SUNDAY...Northwest winds 10 to 20 knots backing west in the
afternoon. A slight chance of snow showers. Waves subsiding to
2 to 4 feet.
.SUNDAY NIGHT...Northwest winds 10 to 20 knots. Waves subsiding
to 1 to 3 feet.
.MONDAY...Northwest winds 10 to 20 knots backing west in the
afternoon. Waves subsiding to calm to 2 feet, then building to
2 to 4 feet.
.MONDAY NIGHT...West winds 15 to 25 knots becoming northwest
20 to 30 knots after midnight. A chance of snow showers. Heavy
freezing spray after midnight. Waves building to 3 to 6 feet
occasionally to 8 feet.
.TUESDAY...Northwest winds 15 to 25 knots becoming west 5 to
15 knots. Waves subsiding to calm to 2 feet, then building to
1 to 3 feet.
.WEDNESDAY...Southwest winds 5 to 15 knots veering west. Waves
1 to 3 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ265-081045-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
942 PM EST Fri Feb 7 2025

.REST OF TONIGHT...West winds 10 to 20 knots diminishing to 5 to
15 knots late. A slight chance of snow showers. Waves 2 to 4 feet
subsiding to calm to 2 feet.
.SATURDAY...West winds 5 to 15 knots veering north by late
morning, then increasing to 10 to 20 knots by mid afternoon. A
chance of snow. Waves calm to 2 feet.
.SATURDAY NIGHT...North winds 15 to 25 knots backing northwest by
midnight. A chance of snow. Waves building to 3 to 5 feet
occasionally to 7 feet.
.SUNDAY...Northwest winds 15 to 25 knots backing west in the
afternoon. A slight chance of snow showers. Waves subsiding to
2 to 4 feet.
.SUNDAY NIGHT...West winds 15 to 25 knots. A chance of snow
showers. Waves subsiding to calm to 2 feet.
.MONDAY...West winds 15 to 25 knots. A chance of snow showers.
Waves building to 1 to 3 feet.
.MONDAY NIGHT...West winds 15 to 25 knots becoming northwest
20 to 30 knots after midnight. A chance of snow showers. Waves
building to 3 to 5 feet occasionally to 7 feet.
.TUESDAY...Northwest winds 15 to 25 knots becoming west 10 to
20 knots. Waves subsiding to calm to 2 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots veering west. Waves
calm to 2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ266-081045-
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-
942 PM EST Fri Feb 7 2025

.REST OF TONIGHT...West winds 10 to 20 knots diminishing to 5 to
15 knots late. Freezing spray late in the evening. Scattered snow
showers. Waves 4 to 7 feet occasionally to 9 feet subsiding to
2 to 4 feet.
.SATURDAY...North winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. A chance of snow. Waves subsiding to
calm to 2 feet.
.SATURDAY NIGHT...North winds 10 to 20 knots becoming northwest
15 to 25 knots by midnight, then increasing to 20 to 30 knots
late. A chance of snow. Waves building to 3 to 6 feet
occasionally to 8 feet.
.SUNDAY...Northwest winds 20 to 30 knots becoming west 15 to
25 knots in the afternoon. Freezing spray. A chance of snow
showers. Waves 3 to 6 feet occasionally to 8 feet.
.SUNDAY NIGHT...West winds 10 to 20 knots veering northwest after
midnight. A chance of snow showers. Waves subsiding to 2 to
4 feet.
.MONDAY...West winds 10 to 20 knots. A chance of snow showers.
Waves 2 to 4 feet.
.MONDAY NIGHT...West winds 15 to 25 knots becoming northwest
20 to 30 knots after midnight. Heavy freezing spray. A chance of
snow showers. Waves building to 4 to 7 feet occasionally to
9 feet.
.TUESDAY...Northwest winds 15 to 25 knots becoming west 10 to
20 knots. Heavy freezing spray. Waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 1 to 3 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots. Waves subsiding to
calm to 2 feet, then building to 1 to 3 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ267-081045-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
942 PM EST Fri Feb 7 2025

.REST OF TONIGHT...West winds 20 to 30 knots diminishing to 10 to
20 knots by midnight. Freezing spray late in the evening.
Scattered snow showers. Waves 5 to 8 feet occasionally to 10 feet
subsiding to 2 to 4 feet.
.SATURDAY...Southwest winds 10 to 20 knots backing south by late
morning, then diminishing to 5 to 15 knots by mid afternoon. A
chance of snow. Waves subsiding to calm to 2 feet.
.SATURDAY NIGHT...North winds 5 to 15 knots increasing to 10 to
20 knots by midnight. Snow likely. Waves building to 3 to 5 feet
occasionally to 7 feet.
.SUNDAY...Northwest winds 15 to 25 knots. Freezing spray. A
chance of snow showers. Waves building to 3 to 6 feet
occasionally to 8 feet.
.SUNDAY NIGHT...West winds 15 to 25 knots becoming northwest
10 to 20 knots after midnight. Freezing spray in the evening. A
chance of snow showers in the evening, then snow showers likely
after midnight. Waves subsiding to 2 to 4 feet.
.MONDAY...Northwest winds 10 to 20 knots becoming west 15 to
25 knots in the afternoon. A chance of snow showers. Waves 2 to
4 feet.
.MONDAY NIGHT...West winds 15 to 25 knots increasing to 20 to
30 knots after midnight. Freezing spray. A chance of snow
showers. Waves building to 4 to 7 feet occasionally to 9 feet.
.TUESDAY...Northwest winds 15 to 25 knots becoming west 10 to
20 knots. Heavy freezing spray. A chance of snow showers. Waves
building to 5 to 8 feet occasionally to 10 feet, then subsiding
to 1 to 3 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots. Waves subsiding to
calm to 2 feet.

Note, wave height forecasts are for ice free areas.

$$
LSZ261-081045-
MAFOR 0804/
Superior West 11710 11700 11810 11110 11127 12820 11730. A chance
of snow showers overnight. Waves 1 to 3 feet.

Superior North Central 11720 11710 14810 12820. A chance of snow
Saturday evening. Waves 2 to 4 feet overnight. Waves 1 to 3 feet
Saturday and Saturday evening.

Superior South Central 11620 12610 12700 11810 12820. A chance of
snow Saturday and Saturday evening. Waves 2 to 4 feet subsiding
to 1 to 3 feet overnight. Waves 1 to 3 feet Saturday and Saturday
evening.

Superior East 11630 19637 11710 19717 11710 11810 11310 11210
11810 11820. A chance of snow Saturday and Saturday evening.
Waves 4 to 7 feet subsiding to 3 to 5 feet overnight. Waves 2 to
4 feet Saturday. Waves 1 to 2 feet Saturday evening.

$$

LC

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