fzus63 kmqt 132101
glfls 
expires:202602140900;;579122

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 draped over eastern lake superior this afternoon 
will slide eastward into ontario tonight. 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. this will be followed by weak 30.0 inch riding sunday ahead 
of a deeper 29.8 inch trough moving over the lake monday. ridging 
builds to 30.2 inches over the lake tuesday, giving way to height 
falls into the middle of the week as a 29.3 inch low lifts off of the 
central rockies.



lsz162-140900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm est fri feb 13 2026 /300 pm cst fri feb 13 2026/

.late this afternoon...west winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...west winds 5 to 15 knots veering northeast by
midnight, then veering southeast late. patchy fog after midnight.
waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots veering southwest. patchy
fog. 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 increasing to 10 to 20 knots
in the afternoon. waves calm to 2 feet. 
.monday night...west winds 5 to 15 knots becoming north 10 to
20 knots after midnight. waves calm to 2 feet. 
.tuesday...northeast winds 15 to 25 knots becoming east gales to
40 knots. a chance of snow showers. waves calm to 2 feet. 
.wednesday...northeast gales to 40 knots becoming east 20 to
30 knots. a chance of snow showers. waves calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 132101
glfls 
expires:202602140900;;579123

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 draped over eastern lake superior this afternoon 
will slide eastward into ontario tonight. 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. this will be followed by weak 30.0 inch riding sunday ahead 
of a deeper 29.8 inch trough moving over the lake monday. ridging 
builds to 30.2 inches over the lake tuesday, giving way to height 
falls into the middle of the week as a 29.3 inch low lifts off of the 
central rockies.



lsz263-140900-
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 feb 13 2026

.late this afternoon...west winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...northwest winds less than 10 knots backing south by
midnight. patchy dense fog. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots veering southwest. patchy
fog. waves calm to 2 feet. 
.saturday night...west winds less than 10 knots. waves calm to
2 feet. 
.sunday...west winds less than 10 knots becoming southwest 5 to
15 knots in the afternoon. waves calm to 2 feet. 
.sunday night...south winds 5 to 15 knots veering southwest after
midnight. waves calm to 2 feet. 
.monday...west winds 5 to 15 knots. waves calm to 2 feet. 
.monday night...west winds 5 to 15 knots veering northwest after
midnight. waves calm to 2 feet. 
.tuesday...northeast winds 10 to 20 knots becoming east gales to
40 knots. waves building to 5 to 8 feet occasionally to 10 feet. 
.wednesday...east gales to 35 knots. a chance of snow showers.
waves building to 5 to 9 feet occasionally to 11 feet. 

note, wave height forecasts are for ice free areas.

$$