fzus63 kmqt 082001
glfls 
expires:202606090800;;404308

open lake forecast for lake superior
national weather service marquette mi
400 pm edt mon jun 8 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 ridging around 30.0 inches lingers over lake superior into 
tuesday. then, pressure falls to around 29.9 inches over the lake on 
tuesday as 30.2 inch high pressure moves off the mid atlantic coast 
and 29.5 inch troughing over the rockies deepens to 29.3 inches over 
the northern plains. pressure over the lake continues to deepen to 
around 29.5 inches through wednesday as the low tracks eastward into 
nw ontario at 29.2 inches by wednesday evening. pressure holds at 
around 29.6 inches over the lake through the end of the week as 
another colorado low lifts into the great lakes at around 29.5 
inches on thursday. weak ridging of 30.0 inches returns to lake 
superior by the end of the day saturday.




lsz162-090800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm edt mon jun 8 2026 /300 pm cdt mon jun 8 2026/

.late this afternoon...northeast winds 10 to 20 knots. a chance
of showers and a slight chance of thunderstorms. waves calm to
2 feet. 
.tonight...east winds 5 to 15 knots backing northeast after
midnight, then diminishing to less than 10 knots late. patchy
fog. a slight chance of thunderstorms through midnight. a chance
of showers. waves calm to 2 feet. 
.tuesday...east winds less than 10 knots increasing to 5 to
15 knots in the afternoon, then backing northeast late. areas of
dense fog through early afternoon, then patchy fog by mid
afternoon. waves calm to 2 feet. 
.tuesday night...northeast winds 5 to 15 knots. a chance of
showers and a slight chance of thunderstorms after midnight.
waves building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.wednesday...east winds 10 to 20 knots backing northeast by mid
afternoon. a chance of showers through early afternoon. a chance
of thunderstorms. showers by mid afternoon. waves building to
1 to 3 feet. 
.wednesday night...east winds 5 to 15 knots becoming southwest
10 to 20 knots after midnight. showers likely through midnight.
waves building to 2 to 4 feet. 
.thursday...southwest winds 15 to 25 knots. a chance of showers
by mid afternoon. waves building to 3 to 6 feet occasionally to
8 feet. 
.thursday night...west winds 15 to 25 knots increasing to 20 to
30 knots after midnight. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.friday...southwest winds 20 to 30 knots becoming west 15 to
25 knots. waves building to 4 to 7 feet occasionally to 9 feet,
then subsiding to 1 to 3 feet. 
.saturday...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. 

$$

fzus63 kmqt 082001
glfls 
expires:202606090800;;404309

open lake forecast for lake superior
national weather service marquette mi
400 pm edt mon jun 8 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 ridging around 30.0 inches lingers over lake superior into 
tuesday. then, pressure falls to around 29.9 inches over the lake on 
tuesday as 30.2 inch high pressure moves off the mid atlantic coast 
and 29.5 inch troughing over the rockies deepens to 29.3 inches over 
the northern plains. pressure over the lake continues to deepen to 
around 29.5 inches through wednesday as the low tracks eastward into 
nw ontario at 29.2 inches by wednesday evening. pressure holds at 
around 29.6 inches over the lake through the end of the week as 
another colorado low lifts into the great lakes at around 29.5 
inches on thursday. weak ridging of 30.0 inches returns to lake 
superior by the end of the day saturday.




lsz263-090800-
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 jun 8 2026

.late this afternoon...northeast winds 5 to 15 knots. a chance of
showers and a slight chance of thunderstorms. waves calm to
2 feet. 
.tonight...east winds 5 to 15 knots veering south after midnight,
then becoming east less than 10 knots late. areas of fog. a
slight chance of thunderstorms through midnight. a chance of
showers. waves calm to 2 feet. 
.tuesday...east winds less than 10 knots increasing to 5 to
15 knots in the afternoon. a slight chance of showers through
early afternoon. areas of dense fog. waves calm to 2 feet. 
.tuesday night...east winds 5 to 15 knots. waves calm to 2 feet. 
.wednesday...east winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. a chance of showers through early
afternoon. a chance of thunderstorms. showers by mid afternoon.
waves building to 3 to 5 feet occasionally to 7 feet. 
.wednesday night...south winds 10 to 20 knots veering southwest
after midnight. showers likely and a chance of thunderstorms
through midnight. waves subsiding to 2 to 4 feet, then building
to 3 to 5 feet occasionally to 7 feet. 
.thursday...southwest winds 15 to 25 knots. a chance of showers
by mid afternoon. waves building to 4 to 7 feet occasionally to
9 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. 
.thursday night...southwest winds 15 to 25 knots becoming west
20 to 30 knots after midnight. a chance of showers. waves
building to 5 to 8 feet occasionally to 10 feet. 
.friday...southwest gales to 35 knots becoming west 15 to
25 knots. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.saturday...west winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to calm to 2 feet. 

$$