fzus63 kmqt 090201
glfls 
expires:202603090800;;873150

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt sun mar 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...

a 29.0 inch low moves into northwest quebec tonight into monday as a 
secondary 29.2 inch low trails behind near the northern shores of 
lake superior. the low exits the area monday afternoon before being 
replaced by a 30.4 inch high over northern ontario tuesday. the high 
slowly moves into quebec tuesday night as 29.6 low pressure moves 
into the lower midwest. this low moves through the lower great lakes 
wednesday at 29.5 inches. thursday, lake superior will be situated 
between a 29.3 inch low over southern quebec, a 29.4 inch low over 
north dakota, a 30.3 inch high over the lower mississippi river 
valley, and a 30.1 inch ridge over hudson bay. the dakotas low 
arrives near the lake friday morning, then moves near the lower 
great lakes friday night. a 30.2 inch ridge will then follow across 
the upper great lakes saturday.



lsz162-090800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt sun mar 8 2026 /900 pm cdt sun mar 8 2026/

.rest of tonight...southwest winds 15 to 25 knots increasing to
20 to 30 knots late. waves 1 to 3 feet building to 3 to 5 feet
occasionally to 7 feet. 
.monday...west winds 15 to 25 knots diminishing to 5 to 15 knots.
waves subsiding to calm to 2 feet. 
.monday night...north winds 5 to 15 knots becoming northeast
10 to 20 knots after midnight. a chance of snow showers, possibly
mixed with rain through midnight, then snow showers likely after
midnight. waves calm to 2 feet. 
.tuesday...northeast winds 15 to 25 knots veering east by mid
afternoon. a slight chance of snow showers. waves building to
2 to 4 feet. 
.tuesday night...northeast winds 15 to 25 knots. a chance of snow
showers. waves 2 to 4 feet. 
.wednesday...northeast winds 10 to 20 knots backing north by mid
afternoon. a chance of snow showers. waves subsiding to 1 to
3 feet. 
.wednesday night...north winds 10 to 20 knots backing northwest
after midnight. waves subsiding to calm to 2 feet. 
.thursday...southeast winds 15 to 25 knots becoming east gales to
35 knots. a chance of snow showers, possibly mixed with rain,
then snow showers, possibly mixed with rain. waves building to
7 to 10 feet occasionally to 13 feet. 
.friday...north gales to 35 knots becoming northwest 10 to
20 knots. a chance of snow showers. waves subsiding to calm to
2 feet. 

$$

fzus63 kmqt 090201
glfls 
expires:202603090800;;873151

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt sun mar 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...

a 29.0 inch low moves into northwest quebec tonight into monday as a 
secondary 29.2 inch low trails behind near the northern shores of 
lake superior. the low exits the area monday afternoon before being 
replaced by a 30.4 inch high over northern ontario tuesday. the high 
slowly moves into quebec tuesday night as 29.6 low pressure moves 
into the lower midwest. this low moves through the lower great lakes 
wednesday at 29.5 inches. thursday, lake superior will be situated 
between a 29.3 inch low over southern quebec, a 29.4 inch low over 
north dakota, a 30.3 inch high over the lower mississippi river 
valley, and a 30.1 inch ridge over hudson bay. the dakotas low 
arrives near the lake friday morning, then moves near the lower 
great lakes friday night. a 30.2 inch ridge will then follow across 
the upper great lakes 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-
1000 pm edt sun mar 8 2026

.rest of tonight...southwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight, then becoming west 20 to 30 knots
late. a chance of rain showers by midnight. waves 3 to 5 feet
occasionally to 7 feet building to 4 to 7 feet occasionally to
9 feet. 
.monday...west winds 20 to 30 knots diminishing to 10 to
20 knots. waves subsiding to 1 to 3 feet. 
.monday night...north winds 10 to 20 knots becoming northeast
15 to 25 knots after midnight. a slight chance of rain showers
through midnight. a chance of snow showers. waves subsiding to
calm to 2 feet, then building to 1 to 3 feet. 
.tuesday...northeast winds 15 to 25 knots. a chance of snow
showers. waves building to 2 to 4 feet. 
.tuesday night...east gales to 35 knots backing northeast after
midnight. a chance of snow showers. freezing spray after
midnight. waves building to 3 to 5 feet occasionally to 7 feet. 
.wednesday...northeast gales to 35 knots becoming north 15 to
25 knots by mid afternoon. freezing spray. a chance of snow
showers. waves 3 to 5 feet occasionally to 7 feet. 
.wednesday night...north winds 10 to 20 knots. waves building to
3 to 6 feet occasionally to 8 feet, then subsiding to 2 to
4 feet. 
.thursday...southeast winds 15 to 25 knots increasing to gales to
40 knots. snow showers, possibly mixed with rain. waves subsiding
to 1 to 3 feet, then building to 12 to 17 feet occasionally to
21 feet. 
.friday...north gales to 35 knots becoming northwest 15 to
25 knots. a chance of snow showers. waves building to 15 to
20 feet occasionally to 25 feet, then subsiding to 2 to 4 feet. 

$$