fzus63 kmqt 262001
glfls 
expires:202610270800;;763436

open lake forecast for lake superior
national weather service marquette mi
400 pm edt mon oct 26 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 centered over the manitoba/ontario border continues to 
slowly shift eastward tonight, reaching the saint lawrence seaway on 
tuesday. this keeps ridging of at least 30.4 inches over the lake 
through tuesday afternoon. a 29.8 inch low tracks from the northern 
plains tuesday night to james bay at 29.6 inches by thursday 
morning, dragging a 29.9 inch trough across lake superior wednesday 
evening to thursday morning. high pressure of 30.2 to 30.3 inches 
returns to the upper great lakes by friday.




lsz162-270800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm edt mon oct 26 2026 /300 pm cdt mon oct 26 2026/

.late this afternoon...east winds 10 to 20 knots. waves calm to
2 feet. 
.tonight...east winds 5 to 15 knots increasing to 10 to 20 knots
after midnight. a chance of rain showers after midnight. waves
building to 1 to 3 feet. 
.tuesday...east winds 15 to 25 knots. rain showers. waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
2 to 4 feet. 
.tuesday night...southeast winds 10 to 20 knots becoming south
5 to 15 knots after midnight, then veering southwest late. a
chance of showers through midnight. waves subsiding to calm to
2 feet. 
.wednesday...southwest winds 5 to 15 knots. a chance of showers
by mid afternoon. waves calm to 2 feet. 
.wednesday night...south winds 5 to 15 knots becoming west 10 to
20 knots after midnight. showers through midnight. waves calm to
2 feet. 
.thursday...west winds 10 to 20 knots. waves calm to 2 feet. 
.thursday night...west winds 5 to 15 knots. waves calm to 2 feet.
.friday...west winds 5 to 15 knots veering northeast. waves calm
to 2 feet. 
.saturday...east winds 10 to 20 knots diminishing to 5 to
15 knots. a chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 262001
glfls 
expires:202610270800;;763437

open lake forecast for lake superior
national weather service marquette mi
400 pm edt mon oct 26 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 centered over the manitoba/ontario border continues to 
slowly shift eastward tonight, reaching the saint lawrence seaway on 
tuesday. this keeps ridging of at least 30.4 inches over the lake 
through tuesday afternoon. a 29.8 inch low tracks from the northern 
plains tuesday night to james bay at 29.6 inches by thursday 
morning, dragging a 29.9 inch trough across lake superior wednesday 
evening to thursday morning. high pressure of 30.2 to 30.3 inches 
returns to the upper great lakes by friday.




lsz263-270800-
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 edt mon oct 26 2026

.late this afternoon...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...east winds 5 to 15 knots. a slight chance of rain
showers after midnight. waves calm to 2 feet. 
.tuesday...southeast winds 10 to 20 knots increasing to 15 to
25 knots late. a chance of rain showers through early afternoon,
then rain showers likely by mid afternoon. waves building to 2 to
4 feet. 
.tuesday night...southeast winds 10 to 20 knots veering south
after midnight, then becoming southwest 5 to 15 knots late. a
slight chance of showers through midnight. waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 1 to 3 feet. 
.wednesday...southwest winds 10 to 20 knots. a slight chance of
showers by mid afternoon. waves subsiding to calm to 2 feet. 
.wednesday night...south winds 10 to 20 knots veering west after
midnight. showers through midnight, then a chance of showers
after midnight. waves building to 1 to 3 feet. 
.thursday...west winds 10 to 20 knots. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.thursday night...west winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.friday...west winds 5 to 15 knots backing east. waves calm to
2 feet. 
.saturday...east winds 5 to 15 knots veering south. a chance of
rain showers. waves calm to 2 feet. 

$$