fzus63 kmqt 102001
glfls 
expires:202606110800;;519928

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed jun 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... 

troughing deepens to around 29.5 inches by this evening as the 
parent low tracks into northern ontario at 29.3 inches. pressure 
over lake superior hold at around 29.6 inches on thursday until 
another colorado low lifts into the upper great lakes at around 29.5 
inches in the evening. behind the low, troughing progressively 
weakens to 29.8 inches friday through friday night. while troughing 
may restrengthen a little to 29.7 inches on saturday, expect weak 
ridging of 30.0 inches to return to lake superior on sunday. 




lsz162-110800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt wed jun 10 2026 /301 pm cdt wed jun 10 2026/

...dense fog advisory in effect until 8 am edt /7 am cdt/
thursday...

.late this afternoon...east winds 10 to 20 knots. patchy dense
fog. showers and a chance of thunderstorms. some thunderstorms
may be severe. waves 1 to 3 feet. 
.tonight...east winds 5 to 15 knots becoming southwest 10 to
20 knots after midnight. a chance of showers and thunderstorms
through midnight. patchy dense fog. some thunderstorms may be
severe. waves subsiding to calm to 2 feet, then building to 1 to
3 feet. 
.thursday...southwest winds 10 to 20 knots increasing to 15 to
25 knots late. patchy fog through early afternoon. a chance of
showers and a slight chance of thunderstorms by mid afternoon.
waves 1 to 3 feet. 
.thursday night...southwest winds 15 to 25 knots veering west
late. a chance of showers through midnight. waves building to
2 to 4 feet. 
.friday...southwest winds 15 to 25 knots becoming west 20 to
30 knots by mid afternoon. waves building to 3 to 6 feet
occasionally to 8 feet. 
.friday night...west winds 10 to 20 knots. waves subsiding to
calm to 2 feet, then building to 1 to 3 feet. 
.saturday...west winds 15 to 25 knots. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.saturday night...west winds 15 to 25 knots. waves subsiding to
calm to 2 feet. 
.sunday...west winds 15 to 25 knots diminishing to 10 to
20 knots. waves building to 2 to 4 feet, then subsiding to calm
to 2 feet. 
.monday...southwest winds 10 to 20 knots becoming west 5 to
15 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 

$$

fzus63 kmqt 102001
glfls 
expires:202606110800;;519929

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed jun 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... 

troughing deepens to around 29.5 inches by this evening as the 
parent low tracks into northern ontario at 29.3 inches. pressure 
over lake superior hold at around 29.6 inches on thursday until 
another colorado low lifts into the upper great lakes at around 29.5 
inches in the evening. behind the low, troughing progressively 
weakens to 29.8 inches friday through friday night. while troughing 
may restrengthen a little to 29.7 inches on saturday, expect weak 
ridging of 30.0 inches to return to lake superior on sunday. 




lsz263-110800-
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-
401 pm edt wed jun 10 2026

...dense fog advisory in effect until 8 am edt thursday...

.late this afternoon...east winds 10 to 20 knots. patchy dense
fog. a chance of showers and thunderstorms. some thunderstorms
may be severe. waves 1 to 3 feet building to 2 to 4 feet. 
.tonight...south winds 10 to 20 knots veering southwest after
midnight. patchy dense fog. a chance of thunderstorms through
midnight. a chance of showers. some thunderstorms may be severe.
waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.thursday...southwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon, then diminishing to 10 to 20 knots
late. areas of dense fog through early afternoon. a chance of
showers by mid afternoon. waves 2 to 4 feet. 
.thursday night...southwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight, then veering west late. a chance
of showers. waves building to 3 to 6 feet occasionally to 8 feet.
.friday...southwest winds 20 to 30 knots. waves building to 4 to
7 feet occasionally to 9 feet. 
.friday night...west winds 15 to 25 knots backing southwest after
midnight. waves subsiding to 2 to 4 feet. 
.saturday...west winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet. 
.saturday night...west winds 10 to 20 knots increasing to 15 to
25 knots after midnight. waves subsiding to 2 to 4 feet, then
building to 3 to 5 feet occasionally to 7 feet. 
.sunday...west winds 15 to 25 knots. waves building to 3 to
6 feet occasionally to 8 feet, then subsiding to 2 to 4 feet. 
.monday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$