fzus63 kmqt 122107 cca
glfls 
expires:202601130900;;241912

open lake forecast for lake superior...corrected
national weather service marquette mi
407 pm est mon jan 12 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...

weak 29.9 inch ridging over the lake through this evening gives way 
to height falls overnight as a 29.3 inch low pressure drops out of 
manitoba. this low deepens to 29.2 inches while moving over northern 
lake superior tuesday. this finally tracks into southern quebec 
tuesday evening. meanwhile, 30.5 inch high pressure builds over the 
dakotas wednesday morning, sliding over the great lakes into 
thursday while weakening to 30.1 inches. this will be followed up by 
a 29.4 inch low moving over lake superior on friday, weakening to 
29.6 inches over the upper great lakes on saturday.


lsz162-130900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
407 pm est mon jan 12 2026 /307 pm cst mon jan 12 2026/

...gale watch in effect from tuesday evening through wednesday
afternoon...

.late this afternoon...southwest winds 10 to 20 knots. waves 1 to
3 feet. 
.tonight...southwest winds 10 to 20 knots increasing to 15 to
25 knots late. rain showers, possibly mixed with snow after
midnight. waves subsiding to calm to 2 feet, then building to
2 to 4 feet. 
.tuesday...west winds 15 to 25 knots increasing to 20 to 30 knots
by mid afternoon. a chance of rain showers, possibly mixed with
snow. waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 2 to 4 feet. 
.tuesday night...northwest gales to 35 knots becoming north gales
to 40 knots by midnight. heavy freezing spray after midnight. a
slight chance of snow showers after midnight. waves building to
7 to 10 feet occasionally to 13 feet. 
.wednesday...north gales to 35 knots becoming northwest 15 to
25 knots in the afternoon. heavy freezing spray in the morning.
waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.wednesday night...north winds 15 to 25 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.thursday...southwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. a chance of snow showers. waves
building to 2 to 4 feet. 
.thursday night...southwest winds 15 to 25 knots becoming west
10 to 20 knots after midnight. snow showers likely in the
evening, then a chance of snow showers after midnight. waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
calm to 2 feet. 
.friday...northwest winds 15 to 25 knots becoming north 20 to
30 knots. snow showers likely, then a chance of snow showers.
waves building to 2 to 4 feet. 
.saturday...north winds 20 to 30 knots backing northwest. waves
2 to 4 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 122107 cca
glfls 
expires:202601130900;;241913

open lake forecast for lake superior...corrected
national weather service marquette mi
407 pm est mon jan 12 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...

weak 29.9 inch ridging over the lake through this evening gives way 
to height falls overnight as a 29.3 inch low pressure drops out of 
manitoba. this low deepens to 29.2 inches while moving over northern 
lake superior tuesday. this finally tracks into southern quebec 
tuesday evening. meanwhile, 30.5 inch high pressure builds over the 
dakotas wednesday morning, sliding over the great lakes into 
thursday while weakening to 30.1 inches. this will be followed up by 
a 29.4 inch low moving over lake superior on friday, weakening to 
29.6 inches over the upper great lakes on saturday.


lsz263-130900-
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-
407 pm est mon jan 12 2026

...gale watch in effect from tuesday evening through wednesday
afternoon...

.late this afternoon...west winds 10 to 20 knots. waves 3 to
5 feet occasionally to 7 feet subsiding to 2 to 4 feet. 
.tonight...southwest winds 5 to 15 knots increasing to 10 to
20 knots by midnight. rain showers, possibly mixed with snow
after midnight. waves subsiding to 1 to 3 feet, then building to
2 to 4 feet. 
.tuesday...west winds 15 to 25 knots. a chance of rain and snow
showers. waves building to 3 to 6 feet occasionally to 8 feet. 
.tuesday night...north gales to 45 knots. heavy freezing spray. a
slight chance of rain showers in the evening. a chance of snow
showers. waves building to 12 to 17 feet occasionally to 21 feet.
.wednesday...north gales to 40 knots diminishing to 20 to
30 knots in the afternoon. a slight chance of snow showers in the
morning. heavy freezing spray. waves subsiding to 5 to 8 feet
occasionally to 10 feet. 
.wednesday night...north winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. freezing spray in the evening.
waves subsiding to 1 to 3 feet. 
.thursday...southwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. waves subsiding to calm to 2 feet,
then building to 3 to 6 feet occasionally to 8 feet. 
.thursday night...southwest winds 15 to 25 knots becoming west
10 to 20 knots after midnight. a chance of snow showers. waves
subsiding to 2 to 4 feet. 
.friday...northwest winds 15 to 25 knots becoming north 20 to
30 knots. a chance of snow showers. waves subsiding to 1 to
3 feet, then building to 3 to 6 feet occasionally to 8 feet. 
.saturday...north winds 20 to 30 knots. heavy freezing spray.
waves building to 4 to 7 feet occasionally to 9 feet, then
subsiding to 3 to 6 feet occasionally to 8 feet. 

note, wave height forecasts are for ice free areas.

$$