fzus63 kmqt 112101
glfls 
expires:202601120900;;188100

open lake forecast for lake superior
national weather service marquette mi
400 pm est sun jan 11 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 weak 29.8 inch trough drops over lake superior tonight, extending 
southward from  29.5 inch low pressure over hudson bay. a weak 29.9 
inch ridge then moves over the lake monday night ahead of a 29.4 
inch low over manitoba. this low deepens to 29.3 inches as it moves 
over lake superior tuesday afternoon before moving into southern 
quebec by wednesday morning. meanwhile, 30.6 inch high pressure 
builds over the dakotas during the middle of next week and shifts 
east to the great lakes late wednesday into thursday. this will be 
followed up by 29.7 inch troughing moving over the lake friday.



lsz162-120900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm est sun jan 11 2026 /300 pm cst sun jan 11 2026/

.late this afternoon...southwest winds to 30 knots with a few
gale force gusts to 35 knots possible. a chance of snow showers.
waves 4 to 7 feet occasionally to 9 feet. 
.tonight...southwest winds 20 to 30 knots veering west by
midnight, then diminishing to 15 to 25 knots late. a slight
chance of snow showers in the evening. waves building to 5 to
8 feet occasionally to 10 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 
.monday...west winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to 1 to 3 feet. 
.monday night...west winds 10 to 20 knots backing southwest by
midnight, then increasing to 15 to 25 knots late. a chance of
rain showers, possibly mixed with snow after midnight. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet. 
.tuesday...west winds 15 to 25 knots. rain showers, possibly
mixed with snow in the morning, then a chance of rain showers,
possibly mixed with snow in the afternoon. waves 1 to 3 feet. 
.tuesday night...northwest gales to 35 knots becoming north gales
to 40 knots after midnight. a chance of rain showers in the
evening. a chance of snow showers. heavy freezing spray after
midnight. waves building to 6 to 9 feet occasionally to 11 feet. 
.wednesday...north gales to 35 knots diminishing to 15 to
25 knots in the afternoon. heavy freezing spray in the morning.
waves building to 7 to 10 feet occasionally to 13 feet, then
subsiding to 3 to 5 feet occasionally to 7 feet. 
.wednesday night...north winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.thursday...southwest winds 15 to 25 knots backing south. a
chance of snow showers. waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.friday...southwest winds 10 to 20 knots becoming north 15 to
25 knots. a chance of snow showers. waves subsiding to calm to
2 feet, then building to 1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 112101
glfls 
expires:202601120900;;188101

open lake forecast for lake superior
national weather service marquette mi
400 pm est sun jan 11 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 weak 29.8 inch trough drops over lake superior tonight, extending 
southward from  29.5 inch low pressure over hudson bay. a weak 29.9 
inch ridge then moves over the lake monday night ahead of a 29.4 
inch low over manitoba. this low deepens to 29.3 inches as it moves 
over lake superior tuesday afternoon before moving into southern 
quebec by wednesday morning. meanwhile, 30.6 inch high pressure 
builds over the dakotas during the middle of next week and shifts 
east to the great lakes late wednesday into thursday. this will be 
followed up by 29.7 inch troughing moving over the lake friday.



lsz263-120900-
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-
400 pm est sun jan 11 2026

...gale warning in effect until 1 am est monday...

.late this afternoon...southwest winds 20 to 30 knots. a slight
chance of snow showers. waves 4 to 7 feet occasionally to 9 feet.
.tonight...southwest gales to 35 knots becoming west 20 to
30 knots by midnight, then diminishing to 15 to 25 knots late.
snow showers in the evening. waves building to 7 to 10 feet
occasionally to 13 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet. 
.monday...west winds 15 to 25 knots diminishing to 10 to 20 knots
by mid afternoon. waves subsiding to 2 to 4 feet. 
.monday night...west winds 5 to 15 knots backing southwest by
midnight, then increasing to 10 to 20 knots late. a slight chance
of rain and snow showers after midnight. waves subsiding to 1 to
3 feet. 
.tuesday...west winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon. snow showers, possibly mixed with rain in the
morning, then a chance of rain showers, possibly mixed with snow
in the afternoon. waves building to 3 to 5 feet occasionally to
7 feet. 
.tuesday night...north gales to 40 knots. a chance of rain
showers in the evening. a chance of snow showers. heavy freezing
spray after midnight. waves building to 10 to 14 feet
occasionally to 18 feet. 
.wednesday...north gales to 40 knots diminishing to 20 to
30 knots in the afternoon. heavy freezing spray. waves subsiding
to 4 to 7 feet occasionally to 9 feet. 
.wednesday night...north winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.thursday...southwest winds 15 to 25 knots backing south. a
chance of snow showers. waves subsiding to calm to 2 feet, then
building to 3 to 5 feet occasionally to 7 feet. 
.friday...southwest winds 15 to 25 knots veering north. a chance
of snow showers. waves subsiding to 1 to 3 feet, then building to
3 to 5 feet occasionally to 7 feet. 

note, wave height forecasts are for ice free areas.

$$