fzus63 kmqt 060300
glfls 
expires:202603060900;;700610

open lake forecast for lake superior
national weather service marquette mi
1000 pm est thu mar 5 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 friday night at 29.6 inches. 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 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.



lsz162-060900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm est thu mar 5 2026 /900 pm cst thu mar 5 2026/

.rest of tonight...northeast winds 10 to 20 knots diminishing to
5 to 15 knots by midnight, then veering east late. areas of dense
fog late in the evening. patchy fog after midnight. patchy
freezing drizzle. patchy drizzle after midnight. waves 3 to
5 feet occasionally to 7 feet subsiding to 1 to 3 feet. 
.friday...east winds 5 to 15 knots backing northeast. patchy fog
in the morning. areas of drizzle in the morning. a chance of rain
showers. waves subsiding to calm to 2 feet. 
.friday night...north winds 5 to 15 knots backing northwest by
midnight, then increasing to 10 to 20 knots late. a slight chance
of snow showers in the evening. rain showers likely. snow showers
likely, possibly mixed with sleet after midnight. waves calm to
2 feet. 
.saturday...northwest winds 10 to 20 knots backing southwest in
the afternoon. a slight 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 35 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 15 to 25 knots veering west after
midnight. waves subsiding to 2 to 4 feet. 
.monday...west winds 15 to 25 knots becoming northeast 10 to
20 knots. a chance of. waves subsiding to calm to 2 feet, then
building to 2 to 4 feet. 
.tuesday...east winds 15 to 25 knots becoming northeast 20 to
30 knots. snow showers likely, then a chance of snow showers.
waves building to 5 to 8 feet occasionally to 10 feet. 

$$

fzus63 kmqt 060300
glfls 
expires:202603060900;;700611

open lake forecast for lake superior
national weather service marquette mi
1000 pm est thu mar 5 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 friday night at 29.6 inches. 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 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.



lsz263-060900-
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 pm est thu mar 5 2026

.rest of tonight...east winds 5 to 15 knots veering southeast
late. patchy fog. patchy drizzle and freezing drizzle after
midnight. waves 3 to 5 feet occasionally to 7 feet subsiding to
1 to 3 feet. 
.friday...southeast winds 5 to 15 knots. patchy fog in the
morning. areas of drizzle and patchy freezing drizzle in the
morning, then a chance of rain showers in the afternoon. waves
subsiding to calm to 2 feet. 
.friday night...north winds 5 to 15 knots increasing to 15 to
25 knots. a chance of rain showers in the evening, then rain
showers likely, possibly mixed with snow showers after midnight.
waves building to 1 to 3 feet. 
.saturday...northwest winds 15 to 25 knots backing west in the
afternoon. a chance of snow showers, possibly mixed with rain in
the morning. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 
.saturday night...southwest winds 20 to 30 knots increasing to
gales to 35 knots after midnight. 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. waves subsiding
to 3 to 6 feet occasionally to 8 feet. 
.monday...west winds 20 to 30 knots becoming northeast 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 becoming northeast gales to
35 knots. a chance of snow showers. waves building to 5 to 9 feet
occasionally to 11 feet. 

$$