fzus63 kmqt 090800
glfls 
expires:202603092000;;887238

open lake forecast for lake superior
national weather service marquette mi
400 am edt mon mar 9 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.



lsz162-092000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt mon mar 9 2026 /300 am cdt mon mar 9 2026/

.early this morning...west winds 20 to 30 knots. waves 3 to
6 feet occasionally to 8 feet. 
.today...west winds 15 to 25 knots diminishing to 5 to 15 knots.
waves subsiding to calm to 2 feet. 
.tonight...north winds 5 to 15 knots becoming northeast 10 to
20 knots after midnight. a chance of snow showers. waves calm to
2 feet. 
.tuesday...northeast winds 15 to 25 knots veering east late. a
slight chance of snow showers. waves building to 2 to 4 feet. 
.tuesday night...east winds 15 to 25 knots becoming northeast
10 to 20 knots after midnight. a chance of snow showers. waves
subsiding to 1 to 3 feet. 
.wednesday...northeast winds 10 to 20 knots becoming northwest
5 to 15 knots by mid afternoon. waves subsiding to calm to
2 feet. 
.wednesday night...northwest winds 5 to 15 knots. waves calm to
2 feet. 
.thursday...southeast winds 10 to 20 knots increasing to gales to
35 knots. a chance of snow showers, then snow showers, possibly
mixed with rain. waves building to 5 to 8 feet occasionally to
10 feet. 
.friday...northwest gales to 35 knots diminishing to 10 to
20 knots. waves building to 7 to 10 feet occasionally to 13 feet,
then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 090800
glfls 
expires:202603092000;;887239

open lake forecast for lake superior
national weather service marquette mi
400 am edt mon mar 9 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.



lsz263-092000-
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 edt mon mar 9 2026

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

$$