fzus63 kmqt 130901
glfls 
expires:202602132100;;551962

open lake forecast for lake superior
national weather service marquette mi
400 am est fri feb 13 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 29.9 inch trough extends over eastern lake superior today. high 
pressure then builds back to 30.1 inches over the great lakes by 
saturday morning before a weak 29.9 inch trough moves into the upper 
great lakes saturday evening. weak troughing of around 29.8 inches 
hangs out over the upper great lakes the rest of this weekend before 
strengthening to 29.7 inches over lake superior via a 29.6 inch low 
lifting over northern ontario on monday. weak ridging of 30.2 inches 
crosses back over lake superior on tuesday ahead of a 29.3 inch low 
lifting off of the central rockies.



lsz162-132100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am est fri feb 13 2026 /300 am cst fri feb 13 2026/

.early this morning...southwest winds 10 to 20 knots. waves calm
to 2 feet. 
.today...southwest winds 10 to 20 knots veering west by late
morning, then diminishing to 5 to 15 knots by mid afternoon.
waves calm to 2 feet. 
.tonight...west winds 5 to 15 knots veering northeast by
midnight, then veering southeast late. waves calm to 2 feet. 
.saturday...south winds less than 10 knots becoming southwest
5 to 15 knots. waves calm to 2 feet. 
.saturday night...west winds 5 to 15 knots. waves calm to 2 feet.
.sunday...west winds 5 to 15 knots backing southwest in the
afternoon. waves calm to 2 feet. 
.sunday night...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.monday...west winds 5 to 15 knots veering northwest. waves calm
to 2 feet. 
.tuesday...northeast winds 15 to 25 knots becoming east gales to
45 knots. a chance of snow showers, possibly mixed with rain.
waves building to 7 to 10 feet occasionally to 13 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 130901
glfls 
expires:202602132100;;551963

open lake forecast for lake superior
national weather service marquette mi
400 am est fri feb 13 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 29.9 inch trough extends over eastern lake superior today. high 
pressure then builds back to 30.1 inches over the great lakes by 
saturday morning before a weak 29.9 inch trough moves into the upper 
great lakes saturday evening. weak troughing of around 29.8 inches 
hangs out over the upper great lakes the rest of this weekend before 
strengthening to 29.7 inches over lake superior via a 29.6 inch low 
lifting over northern ontario on monday. weak ridging of 30.2 inches 
crosses back over lake superior on tuesday ahead of a 29.3 inch low 
lifting off of the central rockies.



lsz263-132100-
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 am est fri feb 13 2026

.early this morning...southwest winds 15 to 25 knots. waves 2 to
4 feet. 
.today...west winds 15 to 25 knots diminishing to 5 to 15 knots.
waves subsiding to calm to 2 feet. 
.tonight...northwest winds 5 to 15 knots becoming south less than
10 knots by midnight. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots veering southwest. waves
calm to 2 feet. 
.saturday night...west winds 5 to 15 knots. waves calm to 2 feet.
.sunday...west winds 5 to 15 knots backing southwest in the
afternoon. waves calm to 2 feet. 
.sunday night...southwest winds 5 to 15 knots backing south after
midnight. waves calm to 2 feet. 
.monday...west winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...northeast winds 15 to 25 knots becoming east gales to
40 knots. a chance of rain showers. a chance of snow showers.
waves building to 9 to 12 feet occasionally to 15 feet. 

note, wave height forecasts are for ice free areas.

$$