fzus63 kmqt 100801
glfls 
expires:202607102000;;722731

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri jul 10 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... 

weak high pressure of 30.0 inches extends over lake superior from 
hudson bay and northern ontario today. high pressure builds to 30.1 
to 30.2 inches over the lake this weekend as the high shifts south 
to the lower great lakes through sunday. a strong low of around 29.3 
inches looks to cross into hudson bay early next week. by wednesday, 
30.1 inch high pressure extends from the canadian prairie to the 
southern appalachians as 29.1 inch low pressure moves into northern 
quebec.




lsz162-102000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt fri jul 10 2026 /300 am cdt fri jul 10 2026/

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

.early this morning...north winds less than 10 knots. patchy
dense fog. waves calm to 2 feet. 
.today...north winds less than 10 knots veering northeast in the
afternoon, then becoming east 5 to 15 knots late. patchy dense
fog through early afternoon. waves calm to 2 feet. 
.tonight...northeast winds less than 10 knots backing north late.
waves calm to 2 feet. 
.saturday...southwest winds less than 10 knots veering north in
the afternoon, then increasing to 5 to 15 knots late. waves calm
to 2 feet. 
.saturday night...north winds less than 10 knots becoming
southwest 5 to 15 knots after midnight. a slight chance of
showers. a slight chance of thunderstorms after midnight. waves
calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots. waves calm to 2 feet. 
.sunday night...southwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves building to 1 to 3 feet. 
.monday...southwest winds 15 to 25 knots increasing to 20 to
30 knots. waves building to 3 to 5 feet occasionally to 7 feet. 
.tuesday...west winds 15 to 25 knots becoming northwest 10 to
20 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 100801
glfls 
expires:202607102000;;722732

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri jul 10 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... 

weak high pressure of 30.0 inches extends over lake superior from 
hudson bay and northern ontario today. high pressure builds to 30.1 
to 30.2 inches over the lake this weekend as the high shifts south 
to the lower great lakes through sunday. a strong low of around 29.3 
inches looks to cross into hudson bay early next week. by wednesday, 
30.1 inch high pressure extends from the canadian prairie to the 
southern appalachians as 29.1 inch low pressure moves into northern 
quebec.




lsz263-102000-
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 edt fri jul 10 2026

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

.early this morning...east winds less than 10 knots. areas of
dense fog. waves calm to 2 feet. 
.today...east winds less than 10 knots backing northeast in the
afternoon, then veering east late. patchy dense fog through early
afternoon. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots veering southeast after
midnight, then becoming south less than 10 knots late. waves calm
to 2 feet. 
.saturday...southwest winds less than 10 knots increasing to 5 to
15 knots in the afternoon, then backing south late. waves calm to
2 feet. 
.saturday night...south winds 5 to 15 knots veering southwest
after midnight. a slight chance of showers. a slight chance of
thunderstorms after midnight. waves calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. waves building to 2 to 4 feet. 
.sunday night...southwest winds 15 to 25 knots. waves building to
3 to 5 feet occasionally to 7 feet. 
.monday...southwest winds 20 to 30 knots increasing to gales to
35 knots. waves subsiding to 2 to 4 feet, then building to 4 to
7 feet occasionally to 9 feet. 
.tuesday...west winds 20 to 30 knots diminishing to 10 to
20 knots. waves subsiding to calm to 2 feet. 

$$