fzus63 kmqt 060900
glfls 
expires:202603062100;;716173

open lake forecast for lake superior
national weather service marquette mi
400 am est fri mar 6 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...

lake superior is currently between a 30.7 inch high over quebec and 
a 29.5 inch low over eastern colorado. as the high continues to 
shift east, the low will elongate across the mississippi river 
valley, then stretches over lake superior at 29.7 inches tonight. 
the low then deepens to 29.4 inches over the ontario/quebec line 
late saturday morning. as the low further deepens to 29.2 inches 
over quebec saturday evening, a 30.1 inch high over the central to 
southern plains will project a weak 29.8 inch ridge over the lake. 
this ridge is kicked east by a 29.1 inch low that transits northern 
ontario sunday, reaching northwest quebec overnight into monday as a 
secondary 29.0 inch low pressure trails behind near the northern 
shores of lake superior. the low slowly exits the area monday before 
being replaced by a 30.3 inch high over northern ontario tuesday. 
the high slowly moves into quebec wednesday as low pressure moves 
into the lower midwest.



lsz162-062100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am est fri mar 6 2026 /300 am cst fri mar 6 2026/

.early this morning...east winds 5 to 15 knots. patchy fog. a
slight chance of drizzle and flurries. waves 1 to 3 feet. 
.today...east winds 5 to 15 knots backing northeast by mid
afternoon. patchy fog. a slight chance of drizzle and flurries in
the morning. a chance of rain showers. waves subsiding to calm to
2 feet. 
.tonight...northeast winds 5 to 15 knots backing northwest by
midnight, then becoming north 10 to 20 knots late. a chance of
rain showers in the evening, then snow showers with rain showers
after midnight. waves calm to 2 feet. 
.saturday...north winds 15 to 25 knots becoming northwest 10 to
20 knots by late morning, then backing southwest by mid
afternoon. a chance of snow showers, possibly mixed with rain in
the morning. waves calm to 2 feet. 
.saturday night...southwest winds 20 to 30 knots increasing to
gales to 40 knots after midnight. waves building to 5 to 8 feet
occasionally to 10 feet. 
.sunday...southwest gales to 35 knots diminishing to 20 to
30 knots in the afternoon. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.sunday night...southwest winds 20 to 30 knots. waves subsiding
to 2 to 4 feet. 
.monday...west winds 20 to 30 knots becoming north 10 to
20 knots. waves subsiding to calm to 2 feet, then building to
2 to 4 feet. 
.tuesday...east winds 20 to 30 knots. a chance of snow showers.
waves building to 5 to 8 feet occasionally to 10 feet. 

$$

fzus63 kmqt 060900
glfls 
expires:202603062100;;716174

open lake forecast for lake superior
national weather service marquette mi
400 am est fri mar 6 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...

lake superior is currently between a 30.7 inch high over quebec and 
a 29.5 inch low over eastern colorado. as the high continues to 
shift east, the low will elongate across the mississippi river 
valley, then stretches over lake superior at 29.7 inches tonight. 
the low then deepens to 29.4 inches over the ontario/quebec line 
late saturday morning. as the low further deepens to 29.2 inches 
over quebec saturday evening, a 30.1 inch high over the central to 
southern plains will project a weak 29.8 inch ridge over the lake. 
this ridge is kicked east by a 29.1 inch low that transits northern 
ontario sunday, reaching northwest quebec overnight into monday as a 
secondary 29.0 inch low pressure trails behind near the northern 
shores of lake superior. the low slowly exits the area monday before 
being replaced by a 30.3 inch high over northern ontario tuesday. 
the high slowly moves into quebec wednesday as low pressure moves 
into the lower midwest.



lsz263-062100-
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 est fri mar 6 2026

.early this morning...southeast winds 5 to 15 knots. patchy fog.
waves 2 to 4 feet subsiding to 1 to 3 feet. 
.today...southeast winds 5 to 15 knots backing east by mid
afternoon. patchy fog. sprinkles, a slight chance of drizzle and
flurries in the morning. a chance of rain showers in the
afternoon. waves subsiding to calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots becoming north 10 to
20 knots by midnight, then increasing to 15 to 25 knots late. a
chance of rain showers in the evening, then rain showers likely
with pockets of snow showers after midnight. waves building to
1 to 3 feet. 
.saturday...north winds 15 to 25 knots diminishing to 10 to
20 knots by late morning, then becoming west 15 to 25 knots by
mid afternoon. snow showers likely, possibly mixed with rain
showers in the morning. waves building to 2 to 4 feet, then
subsiding to calm to 2 feet. 
.saturday night...southwest gales to 40 knots. waves building to
6 to 9 feet occasionally to 11 feet. 
.sunday...southwest gales to 40 knots. waves subsiding to 3 to
6 feet occasionally to 8 feet. 
.sunday night...southwest winds 20 to 30 knots increasing to
gales to 35 knots after midnight. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.monday...west gales to 35 knots becoming north 15 to 25 knots.
waves subsiding to calm to 2 feet, then building to 3 to 5 feet
occasionally to 7 feet. 
.tuesday...east winds 15 to 25 knots increasing to gales to
35 knots. a chance of snow showers. waves building to 5 to 9 feet
occasionally to 11 feet. 

$$