840
FZUS63 KMQT 150305 CCA
GLFLS

Open Lake Forecast for Lake Superior...CORRECTED
National Weather Service Marquette MI
1005 PM EST Wed Jan 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 30.3 inch high pressure over the Northern Plains is retreating
towards the Gulf tonight into Thursday. As it does so, ridging
skirts the southwestern periphery of the Great Lakes Basin tonight
into Thursday. This ridging is then followed up by a 29.3 inch low
moving over Lake Superior on Friday, which weakens to 29.7 inches
over Georgian Bay Saturday. Meanwhile, high pressure ridging of at
least 30.2 inches settles west of the Great Lakes over the weekend.
A clipper low of at least 29.8 inches is then expected to move over
Lake Superior Sunday and continue into Quebec as it deepens to 29.5
inches on Monday.


LSZ162-150900-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1005 PM EST Wed Jan 14 2026 /905 PM CST Wed Jan 14 2026/

.REST OF TONIGHT...North winds 10 to 20 knots diminishing to 5 to
15 knots by midnight, then backing west late. Waves 2 to 4 feet
subsiding to calm to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots increasing to 20 to
30 knots. A chance of snow showers in the morning, then snow
showers likely in the afternoon. Waves building to 3 to 6 feet
occasionally to 8 feet.
.THURSDAY NIGHT...Southwest winds 15 to 25 knots becoming west
5 to 15 knots by midnight, then becoming northwest 10 to 20 knots
late. Snow showers likely in the evening, then a chance of snow
showers after midnight. Waves subsiding to calm to 2 feet.
.FRIDAY...North winds 10 to 20 knots becoming northwest 15 to
25 knots in the afternoon. A chance of snow showers in the
morning, then snow showers likely in the afternoon. Waves
building to 2 to 4 feet.
.FRIDAY NIGHT...Northwest winds 20 to 30 knots veering north
after midnight. A chance of snow showers. Waves 2 to 4 feet.
.SATURDAY...North winds 20 to 30 knots. A chance of snow showers.
Waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 2 to 4 feet.
.SATURDAY NIGHT...Northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. Waves subsiding to calm to 2 feet.
.SUNDAY...West winds 15 to 25 knots becoming northwest 20 to
30 knots. A chance of snow showers. Waves building to 3 to 5 feet
occasionally to 7 feet.
.MONDAY...Northwest winds 20 to 30 knots diminishing to 15 to
25 knots. Waves subsiding to 1 to 3 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ263-150900-
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-
1005 PM EST Wed Jan 14 2026

.REST OF TONIGHT...North winds 10 to 20 knots diminishing to 5 to
15 knots late. A slight chance of snow showers. Waves 3 to 6 feet
occasionally to 8 feet subsiding to 1 to 3 feet.
.THURSDAY...Southwest winds 5 to 15 knots increasing to 20 to
30 knots. A chance of snow showers in the morning, then snow
showers likely in the afternoon. Freezing spray in the afternoon.
Waves subsiding to calm to 2 feet, then building to 4 to 7 feet
occasionally to 9 feet.
.THURSDAY NIGHT...Southwest winds 15 to 25 knots diminishing to
5 to 15 knots. Snow showers likely in the evening, then a chance
of snow showers after midnight. Waves subsiding to 1 to 3 feet.
.FRIDAY...North winds 5 to 15 knots increasing to 15 to 25 knots
in the afternoon. A chance of snow showers. Waves subsiding to
calm to 2 feet, then building to 1 to 3 feet.
.FRIDAY NIGHT...North winds 15 to 25 knots increasing to 20 to
30 knots after midnight. A chance of snow showers. Freezing spray
after midnight. Waves building to 4 to 7 feet occasionally to
9 feet.
.SATURDAY...North winds 20 to 30 knots. Freezing spray in the
morning. A chance of snow showers. Waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet.
.SATURDAY NIGHT...North winds 15 to 25 knots becoming northwest
10 to 20 knots after midnight. Waves subsiding to 2 to 4 feet.
.SUNDAY...West winds 20 to 30 knots becoming northwest gales to
35 knots. A chance of snow showers. Heavy freezing spray. Waves
building to 5 to 8 feet occasionally to 10 feet.
.MONDAY...Northwest gales to 35 knots diminishing to 20 to
30 knots. Heavy freezing spray. Waves subsiding to 3 to 6 feet
occasionally to 8 feet, then building to 4 to 7 feet occasionally
to 9 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ264-150900-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1005 PM EST Wed Jan 14 2026

...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 1 AM EST
THURSDAY...

.REST OF TONIGHT...North winds 15 to 25 knots diminishing to 5 to
15 knots late. Heavy freezing spray late in the evening. A chance
of snow showers. Waves 5 to 8 feet occasionally to 10 feet
subsiding to 2 to 4 feet.
.THURSDAY...Southwest winds 5 to 15 knots increasing to 15 to
25 knots by late morning, then backing south by mid afternoon. A
chance of snow showers in the afternoon. Waves subsiding to calm
to 2 feet, then building to 3 to 6 feet occasionally to 8 feet.
.THURSDAY NIGHT...South winds 15 to 25 knots diminishing to 5 to
15 knots. Freezing spray in the evening. A chance of snow
showers. Waves subsiding to 1 to 3 feet.
.FRIDAY...North winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon. A chance of snow showers. Waves subsiding to
calm to 2 feet, then building to 2 to 4 feet.
.FRIDAY NIGHT...North 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.
.SATURDAY...North winds 20 to 30 knots. Freezing spray. Waves
building to 4 to 8 feet occasionally to 10 feet.
.SATURDAY NIGHT...North winds 20 to 30 knots becoming northwest
10 to 20 knots after midnight. Heavy freezing spray in the
evening. Waves subsiding to 2 to 4 feet.
.SUNDAY...West winds 15 to 25 knots becoming northwest gales to
40 knots. A chance of snow showers. Heavy freezing spray. Waves
building to 7 to 10 feet occasionally to 13 feet.
.MONDAY...Northwest gales to 40 knots diminishing to 20 to
30 knots. Heavy freezing spray. Waves subsiding to 3 to 5 feet
occasionally to 7 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ265-150900-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1005 PM EST Wed Jan 14 2026

...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 1 AM EST
THURSDAY...

.REST OF TONIGHT...North winds to 30 knots with a few gale force
gusts to 35 knots possible diminishing to 15 to 25 knots. Heavy
freezing spray. A chance of snow showers. Waves 9 to 12 feet
occasionally to 15 feet subsiding to 3 to 6 feet occasionally to
8 feet.
.THURSDAY...Northwest winds 10 to 20 knots backing southwest by
late morning, then becoming south 15 to 25 knots by mid
afternoon. A chance of snow showers in the afternoon. Waves
subsiding to calm to 2 feet, then building to 1 to 3 feet.
.THURSDAY NIGHT...South winds 15 to 25 knots veering southwest by
midnight, then diminishing to 10 to 20 knots late. A chance of
snow showers. Waves building to 2 to 4 feet, then subsiding to
calm to 2 feet.
.FRIDAY...Southwest winds 10 to 20 knots becoming northwest 15 to
25 knots in the afternoon. A chance of snow showers. Waves calm
to 2 feet.
.FRIDAY NIGHT...North winds 15 to 25 knots increasing to 20 to
30 knots after midnight. A chance of snow showers. Freezing spray
after midnight. Waves building to 3 to 6 feet occasionally to
8 feet.
.SATURDAY...North winds 20 to 30 knots increasing to gales to
35 knots in the afternoon. Freezing spray. A chance of snow
showers. Waves building to 5 to 8 feet occasionally to 10 feet.
.SATURDAY NIGHT...Northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. Freezing spray. A chance of snow
showers. Waves subsiding to 3 to 5 feet occasionally to 7 feet.
.SUNDAY...West winds 20 to 30 knots becoming northwest gales to
40 knots. A chance of snow showers, then snow showers likely.
Heavy freezing spray. Waves subsiding to 2 to 4 feet, then
building to 8 to 11 feet occasionally to 14 feet.
.MONDAY...Northwest gales to 40 knots. Heavy freezing spray. A
chance of snow showers. Waves building to 9 to 12 feet
occasionally to 15 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ266-150900-
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-
1005 PM EST Wed Jan 14 2026

...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 4 AM EST
THURSDAY...

.REST OF TONIGHT...North winds to 30 knots with a few gale force
gusts to 35 knots possible diminishing to 15 to 25 knots. Heavy
freezing spray. A chance of snow showers. Waves 10 to 14 feet
occasionally to 18 feet subsiding to 4 to 7 feet occasionally to
9 feet.
.THURSDAY...North winds 10 to 20 knots backing southwest by late
morning, then becoming south 15 to 25 knots by mid afternoon. A
slight chance of snow showers. Waves subsiding to 1 to 3 feet,
then building to 2 to 4 feet.
.THURSDAY NIGHT...South winds 20 to 30 knots diminishing to 15 to
25 knots late. Freezing spray in the evening. A chance of snow
showers. Waves building to 4 to 7 feet occasionally to 9 feet,
then subsiding to 3 to 5 feet occasionally to 7 feet.
.FRIDAY...South winds 10 to 20 knots veering northwest in the
afternoon. A chance of snow showers. Waves subsiding to 1 to
3 feet.
.FRIDAY NIGHT...North winds 15 to 25 knots. A chance of snow
showers. Freezing spray after midnight. Waves building to 3 to
6 feet occasionally to 8 feet.
.SATURDAY...North winds 20 to 30 knots. Freezing spray. A chance
of snow showers. Waves building to 5 to 8 feet occasionally to
10 feet.
.SATURDAY NIGHT...North winds 20 to 30 knots backing northwest
after midnight. Freezing spray. A chance of snow showers. Waves
subsiding to 3 to 6 feet occasionally to 8 feet.
.SUNDAY...West winds 20 to 30 knots becoming northwest gales to
40 knots. Heavy freezing spray. A chance of snow showers. Snow
showers. Waves subsiding to 3 to 5 feet occasionally to 7 feet,
then building to 9 to 12 feet occasionally to 15 feet.
.MONDAY...Northwest gales to 40 knots. Heavy freezing spray. A
chance of snow showers. Waves building to 10 to 14 feet
occasionally to 18 feet, then subsiding to 6 to 9 feet
occasionally to 11 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ267-150900-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1005 PM EST Wed Jan 14 2026

...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 4 AM EST
THURSDAY...

.REST OF TONIGHT...North winds to 30 knots with a few gale force
gusts to 35 knots possible diminishing to 15 to 25 knots. Heavy
freezing spray. A chance of snow showers. Waves 7 to 10 feet
occasionally to 13 feet subsiding to 3 to 6 feet occasionally to
8 feet.
.THURSDAY...North winds 10 to 20 knots veering south by mid
afternoon. A slight chance of snow showers in the morning. Waves
subsiding to calm to 2 feet.
.THURSDAY NIGHT...South winds 15 to 25 knots increasing to 20 to
30 knots by midnight. A chance of snow showers. Waves building to
3 to 6 feet occasionally to 8 feet.
.FRIDAY...Southeast winds 15 to 25 knots. Snow showers likely.
Waves subsiding to 1 to 3 feet.
.FRIDAY NIGHT...East winds 10 to 20 knots becoming northeast
15 to 25 knots after midnight. A chance of snow showers. Waves
1 to 3 feet.
.SATURDAY...Northeast winds 15 to 25 knots backing north in the
afternoon. A chance of snow showers. Waves building to 3 to
5 feet occasionally to 7 feet.
.SATURDAY NIGHT...North winds 15 to 25 knots. A chance of snow
showers. Waves 3 to 5 feet occasionally to 7 feet.
.SUNDAY...West winds 15 to 25 knots becoming northwest 20 to
30 knots. Heavy freezing spray. A chance of snow showers. Snow
showers likely. Waves building to 7 to 10 feet occasionally to
13 feet.
.MONDAY...Northwest winds 20 to 30 knots. Heavy freezing spray. A
chance of snow showers. Waves subsiding to 5 to 8 feet
occasionally to 10 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ261-150900-
MAFOR 1504/
Superior West 11820 11810 11600 11520 11537 12547 11537. Waves 2
to 4 feet subsiding to 1 to 3 feet overnight. Waves 2 feet or
less building to 3 to 6 feet Thursday. Waves 3 to 6 feet Thursday
evening.

Superior North Central...HEAVY FREEZING SPRAY WARNING IN EFFECT...
11832 11820 11810 11600 11520 13430. A chance of snow showers
overnight, Thursday afternoon, and Thursday evening. Waves 5 to 8
feet subsiding to 3 to 5 feet overnight. Waves 2 to 4 feet building
to 3 to 5 feet Thursday. Waves 3 to 6 feet Thursday evening.

Superior South Central...HEAVY FREEZING SPRAY WARNING IN EFFECT...
11842 11830 11820 11710 11610 11520 12430. A chance of snow showers
overnight and Thursday evening. Waves 7 to 10 feet subsiding to 5 to
8 feet overnight. Waves 3 to 6 feet subsiding to 2 to 4 feet
Thursday. Waves 3 to 6 feet Thursday evening.

Superior East...HEAVY FREEZING SPRAY WARNING IN EFFECT...11842
12830 11110 11200 11420 12430. A chance of snow showers overnight
and Thursday evening. Waves 5 to 9 feet subsiding to 3 to 6 feet
overnight. Waves 3 to 5 feet subsiding to 1 to 3 feet Thursday.
Waves 2 to 4 feet building to 3 to 6 feet Thursday evening.

$$

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