fzus63 kmqt 231401
glfls 
expires:202610232000;;053146

open lake forecast for lake superior
national weather service marquette mi
1000 am edt fri oct 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...

30.5 inch high pressure extending from southern quebec into new 
england is extending a 30.2 inch ridge over lake superior. by 
saturday afternoon, a 29.2 inch low over northern manitoba drags a 
30.1 inch trough over the west half of lake superior. the trough 
remains over the lake until saturday night. high pressure of at 
least 30.6 inches over the canadian prairies on sunday and monday 
pushes ridging of at least 30.4 inches over the upper great lakes on 
sunday. the ridging intensifies to 30.6 inches monday night into 
tuesday morning as the high's center moves overhead. the high 
retreats east into new england by wednesday morning. 




lsz162-232000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am edt fri oct 23 2026 /900 am cdt fri oct 23 2026/

...dense fog advisory in effect until 11 am edt /10 am cdt/ this
morning...

.rest of today...east winds 5 to 15 knots. areas of dense fog by
late morning, then patchy fog by mid afternoon. waves calm to
2 feet. 
.tonight...east winds 5 to 15 knots veering south after midnight,
then increasing to 10 to 20 knots late. patchy fog through
midnight. a slight chance of showers. waves building to 1 to
3 feet. 
.saturday...south winds 15 to 25 knots veering southwest late. a
chance of showers by mid afternoon. waves building to 2 to
4 feet. 
.saturday night...west winds 10 to 20 knots. a chance of showers
through midnight. waves subsiding to calm to 2 feet. 
.sunday...west winds 10 to 20 knots. waves building to 1 to
3 feet. 
.sunday night...northwest winds 10 to 20 knots veering north
after midnight. waves subsiding to calm to 2 feet. 
.monday...northeast winds 5 to 15 knots becoming east 10 to
20 knots. waves building to 1 to 3 feet. 
.tuesday...east winds 10 to 20 knots veering southeast. a chance
of rain showers. waves subsiding to calm to 2 feet, then building
to 1 to 3 feet. 

$$

fzus63 kmqt 231401
glfls 
expires:202610232000;;053147

open lake forecast for lake superior
national weather service marquette mi
1000 am edt fri oct 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...

30.5 inch high pressure extending from southern quebec into new 
england is extending a 30.2 inch ridge over lake superior. by 
saturday afternoon, a 29.2 inch low over northern manitoba drags a 
30.1 inch trough over the west half of lake superior. the trough 
remains over the lake until saturday night. high pressure of at 
least 30.6 inches over the canadian prairies on sunday and monday 
pushes ridging of at least 30.4 inches over the upper great lakes on 
sunday. the ridging intensifies to 30.6 inches monday night into 
tuesday morning as the high's center moves overhead. the high 
retreats east into new england by wednesday morning. 




lsz263-232000-
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-
1000 am edt fri oct 23 2026

...dense fog advisory in effect until 11 am edt this morning...

.rest of today...south winds 5 to 15 knots backing east late.
patchy fog by late morning. waves calm to 2 feet. 
.tonight...south winds 5 to 15 knots increasing to 10 to 20 knots
after midnight. a slight chance of showers after midnight. waves
building to 2 to 4 feet. 
.saturday...south winds 15 to 25 knots veering southwest late. a
slight chance of showers by mid afternoon. waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.saturday night...southwest winds 15 to 25 knots becoming west
10 to 20 knots after midnight. a chance of showers through
midnight. waves subsiding to 1 to 3 feet. 
.sunday...west winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.sunday night...northwest winds 10 to 20 knots becoming north
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.monday...north winds 5 to 15 knots veering east. waves calm to
2 feet. 
.tuesday...east winds 5 to 15 knots veering southeast. a chance
of rain showers. waves calm to 2 feet. 

$$