fzus63 kmqt 232101
glfls 
expires:202601240900;;406400

open lake forecast for lake superior
national weather service marquette mi
400 pm est fri jan 23 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...

high pressure steadily increases to at least 30.6 inches over lake 
superior through saturday as a 31.1 inch high currently over the 
northern plains shifts east to the upper mississippi river valley at 
30.9 inches. ridging over the lake weakens to 30.3 inches on sunday 
as a 29.6 inch low moves northeast along the atlantic coast. a 29.8 
inch clipper low crosses the lake monday night, followed by ridging 
of around 30.1 inches during the middle part of next week.



lsz162-240900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm est fri jan 23 2026 /300 pm cst fri jan 23 2026/

.late this afternoon...west winds 15 to 25 knots. a chance of
snow showers. waves 3 to 5 feet occasionally to 7 feet. 
.tonight...northwest winds 15 to 25 knots diminishing to 10 to
20 knots by midnight. a chance of snow showers. waves subsiding
to calm to 2 feet. 
.saturday...west winds 10 to 20 knots becoming southwest 5 to
15 knots by mid afternoon. a chance of snow showers. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.saturday night...southwest winds 10 to 20 knots becoming west
5 to 15 knots by midnight, then veering northwest late. a slight
chance of snow showers. waves building to 1 to 3 feet, then
subsiding to calm to 2 feet. 
.sunday...northwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. waves calm to 2 feet. 
.sunday night...northwest winds 10 to 20 knots. waves calm to
2 feet. 
.monday...west winds 10 to 20 knots becoming southwest 15 to
25 knots in the afternoon. waves building to 3 to 5 feet
occasionally to 7 feet. 
.monday night...west winds 20 to 30 knots becoming northwest
15 to 25 knots after midnight. waves subsiding to 1 to 3 feet. 
.tuesday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to calm to 2 feet. 
.wednesday...northwest winds 10 to 20 knots veering north. waves
calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 232101
glfls 
expires:202601240900;;406401

open lake forecast for lake superior
national weather service marquette mi
400 pm est fri jan 23 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...

high pressure steadily increases to at least 30.6 inches over lake 
superior through saturday as a 31.1 inch high currently over the 
northern plains shifts east to the upper mississippi river valley at 
30.9 inches. ridging over the lake weakens to 30.3 inches on sunday 
as a 29.6 inch low moves northeast along the atlantic coast. a 29.8 
inch clipper low crosses the lake monday night, followed by ridging 
of around 30.1 inches during the middle part of next week.



lsz263-240900-
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 fri jan 23 2026

...heavy freezing spray warning in effect until 7 pm est this
evening...

.late this afternoon...northwest winds 15 to 25 knots. heavy
freezing spray. snow showers likely. waves 4 to 7 feet
occasionally to 9 feet. 
.tonight...northwest winds 15 to 25 knots diminishing to 10 to
20 knots by midnight. heavy freezing spray in the evening. snow
showers likely in the evening. a chance of snow showers after
midnight. waves subsiding to 2 to 4 feet. 
.saturday...northwest winds 5 to 15 knots backing southwest by
mid afternoon. a chance of snow showers. waves subsiding to 1 to
3 feet. 
.saturday night...southwest winds 5 to 15 knots veering west
late. a slight chance of snow showers. waves 1 to 3 feet. 
.sunday...northwest winds 5 to 15 knots. waves subsiding to calm
to 2 feet. 
.sunday night...northwest winds 10 to 20 knots. waves building to
1 to 3 feet. 
.monday...west winds 15 to 25 knots increasing to 20 to 30 knots
in the afternoon. waves building to 3 to 6 feet occasionally to
8 feet. 
.monday night...west winds 20 to 30 knots becoming northwest
15 to 25 knots after midnight. 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. 
.tuesday...northwest winds 15 to 25 knots. waves subsiding to
2 to 4 feet. 
.wednesday...northwest winds 10 to 20 knots becoming north 15 to
25 knots. waves subsiding to 1 to 3 feet, then building to 2 to
4 feet. 

note, wave height forecasts are for ice free areas.

$$