fzus63 kmqt 061500
glfls 
expires:202603062100;;729927

open lake forecast for lake superior
national weather service marquette mi
1000 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 eastern 
quebec and a 29.6 inch low over western kansas. this low will 
elongate across the mississippi river valley today, then stretch 
over lake superior at 29.7 inches tonight. the low then deepens to 
29.4 inches near the ontario/quebec line late saturday morning. a 
weak 29.8 inch ridge will move over the lake saturday evening as the 
low departs into newfoundland. this ridge is kicked east by a 29.1 
inch low that transits northern ontario sunday, reaching northwest 
quebec sunday night into monday as a secondary 29.0 inch low 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-
1000 am est fri mar 6 2026 /900 am cst fri mar 6 2026/

.rest of today...east winds 5 to 15 knots backing northeast by
mid afternoon. patchy fog. a chance of drizzle and flurries late
in the morning. a chance of rain showers. waves 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, then building to 3 to 5 feet occasionally to
7 feet. 
.monday...west winds 20 to 30 knots becoming north 10 to
20 knots. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 
.tuesday...east winds 20 to 30 knots. a chance of snow showers.
waves building to 6 to 9 feet occasionally to 11 feet. 

$$

fzus63 kmqt 061500
glfls 
expires:202603062100;;729928

open lake forecast for lake superior
national weather service marquette mi
1000 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 eastern 
quebec and a 29.6 inch low over western kansas. this low will 
elongate across the mississippi river valley today, then stretch 
over lake superior at 29.7 inches tonight. the low then deepens to 
29.4 inches near the ontario/quebec line late saturday morning. a 
weak 29.8 inch ridge will move over the lake saturday evening as the 
low departs into newfoundland. this ridge is kicked east by a 29.1 
inch low that transits northern ontario sunday, reaching northwest 
quebec sunday night into monday as a secondary 29.0 inch low 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-
1000 am est fri mar 6 2026

.rest of today...southeast winds 5 to 15 knots backing east by
mid afternoon. patchy fog. sprinkles, a slight chance of drizzle
and flurries late in the morning. a chance of rain showers in the
afternoon. waves 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
2 to 4 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 3 to 6 feet
occasionally to 8 feet, then subsiding to 1 to 3 feet. 
.saturday night...southwest gales to 40 knots. waves building to
7 to 10 feet occasionally to 13 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 building to 4 to 7 feet
occasionally to 9 feet. 
.monday...west gales to 35 knots becoming north 15 to 25 knots.
waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.tuesday...east winds 15 to 25 knots increasing to gales to
35 knots. a chance of snow showers. waves building to 9 to
12 feet occasionally to 15 feet. 

$$