fzus63 kmqt 080800
glfls 
expires:202603082000;;832069

open lake forecast for lake superior
national weather service marquette mi
400 am 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 weak 29.7 inch ridge is currently over eastern lake sueprior, 
associated with a 30.1 inch high over the southern plains. this 
ridge is kicked east by a 29.0 inch low that transits northern 
ontario sunday, reaching northwest quebec sunday night 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 lower michigan 
wednesday at 29.4 inches. thursday, lake superior will be situated 
between a 29.3 inch low over southern quebec, a 29.3 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.



lsz162-082000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt sun mar 8 2026 /300 am cdt sun mar 8 2026/

...gale warning in effect until 11 am edt /10 am cdt/ this
morning...

.early this morning...southwest gales to 35 knots. waves 4 to
8 feet occasionally to 10 feet. 
.today...southwest winds 20 to 30 knots diminishing to 15 to
25 knots late. a slight chance of rain showers by mid afternoon.
waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.tonight...southwest winds 15 to 25 knots increasing to 20 to
30 knots after midnight, then veering west late. a slight chance
of rain showers through midnight. waves subsiding to 2 to 4 feet,
then building to 3 to 6 feet occasionally to 8 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 slight chance of rain showers
through midnight. a chance of snow showers. waves building to
1 to 3 feet. 
.tuesday...northeast winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. a chance of snow showers. waves
building to 4 to 7 feet occasionally to 9 feet. 
.tuesday night...northeast winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. a chance of snow showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet, then building to
4 to 7 feet occasionally to 9 feet. 
.wednesday...north winds 15 to 25 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 
.thursday...southeast winds 10 to 20 knots becoming east gales to
40 knots. snow showers, possibly mixed with rain. waves building
to 8 to 11 feet occasionally to 14 feet. 

$$

fzus63 kmqt 080800
glfls 
expires:202603082000;;832070

open lake forecast for lake superior
national weather service marquette mi
400 am 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 weak 29.7 inch ridge is currently over eastern lake sueprior, 
associated with a 30.1 inch high over the southern plains. this 
ridge is kicked east by a 29.0 inch low that transits northern 
ontario sunday, reaching northwest quebec sunday night 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 lower michigan 
wednesday at 29.4 inches. thursday, lake superior will be situated 
between a 29.3 inch low over southern quebec, a 29.3 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.



lsz263-082000-
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 sun mar 8 2026

...gale warning in effect through this afternoon...

.early this morning...southwest gales to 35 knots. a slight
chance of rain and snow showers. waves 5 to 9 feet occasionally
to 11 feet. 
.today...west gales to 35 knots diminishing to 20 to 30 knots in
the afternoon, then backing southwest late. waves building to
7 to 10 feet occasionally to 13 feet, then subsiding to 4 to
7 feet occasionally to 9 feet. 
.tonight...southwest winds 15 to 25 knots becoming west 20 to
30 knots late. a slight chance of rain showers through midnight.
waves subsiding to 3 to 5 feet occasionally to 7 feet, then
building to 4 to 7 feet occasionally to 9 feet. 
.monday...west winds 15 to 25 knots diminishing to 10 to 20 knots
in the afternoon. waves subsiding to 1 to 3 feet. 
.monday night...north winds 10 to 20 knots becoming northeast
15 to 25 knots after midnight. a chance of snow showers after
midnight. 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 3 to 6 feet occasionally to 8 feet. 
.tuesday night...northeast gales to 35 knots. a chance of snow
showers. waves building to 5 to 8 feet occasionally to 10 feet. 
.wednesday...north gales to 35 knots diminishing to 20 to
30 knots. waves building to 6 to 9 feet occasionally to 11 feet,
then subsiding to 3 to 5 feet occasionally to 7 feet. 
.thursday...north winds 10 to 20 knots becoming southeast gales
to 40 knots. snow showers, possibly mixed with rain. waves
subsiding to calm to 2 feet, then building to 11 to 15 feet
occasionally to 19 feet. 

$$