fzus63 kmqt 110801
glfls 
expires:202603112000;;001911

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed mar 11 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...

29.6 inch low pressure currently near southern lake michigan moves 
through lower michigan today, reaching lake huron at 29.4 inches by 
the evening before exiting eastward. thursday, lake superior will be 
situated between a 29.3 inch low over the mouth of the st lawrence 
river, 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 at near 
29.2 inches, then moves into southern quebec friday night. a 30.2 
inch ridge will then follow across the upper great lakes saturday, 
ahead of an approaching 29.5 inch low that deepens to 29.2 inches 
over southern michigan sunday evening. monday, the low will move to 
the ontario/quebec line while 30.4 inch high pressure overspreads 
the northern plains.



lsz162-112000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt wed mar 11 2026 /300 am cdt wed mar 11 2026/

.early this morning...northeast winds 10 to 20 knots. a chance of
snow. waves 2 to 4 feet. 
.today...north winds 10 to 20 knots backing northwest late. a
chance of snow through early afternoon. waves subsiding to 1 to
3 feet. 
.tonight...northwest winds 10 to 20 knots diminishing to 5 to
15 knots late. waves subsiding to calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots backing south in the
afternoon, then becoming east 10 to 20 knots late. a slight
chance of snow showers by mid afternoon. waves building to 1 to
3 feet. 
.thursday night...east gales to 40 knots backing northeast after
midnight. snow showers. freezing spray after midnight. waves
building to 10 to 14 feet occasionally to 18 feet. 
.friday...north gales to 40 knots becoming northwest 15 to
25 knots by mid afternoon. a chance of snow showers. waves
subsiding to 4 to 7 feet occasionally to 9 feet. 
.friday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots becoming northeast
20 to 30 knots. freezing spray. a chance of snow showers. waves
building to 5 to 8 feet occasionally to 10 feet. 
.sunday...northeast gales to 35 knots becoming north gales to
40 knots. freezing spray. a chance of snow showers. waves
building to 11 to 15 feet occasionally to 19 feet, then subsiding
to 9 to 12 feet occasionally to 15 feet. 

$$

fzus63 kmqt 110801
glfls 
expires:202603112000;;001912

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed mar 11 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...

29.6 inch low pressure currently near southern lake michigan moves 
through lower michigan today, reaching lake huron at 29.4 inches by 
the evening before exiting eastward. thursday, lake superior will be 
situated between a 29.3 inch low over the mouth of the st lawrence 
river, 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 at near 
29.2 inches, then moves into southern quebec friday night. a 30.2 
inch ridge will then follow across the upper great lakes saturday, 
ahead of an approaching 29.5 inch low that deepens to 29.2 inches 
over southern michigan sunday evening. monday, the low will move to 
the ontario/quebec line while 30.4 inch high pressure overspreads 
the northern plains.



lsz263-112000-
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 wed mar 11 2026

.early this morning...northeast winds 10 to 20 knots. snow
likely. waves 3 to 5 feet occasionally to 7 feet. 
.today...north winds 10 to 20 knots backing northwest late. a
chance of snow through early afternoon. waves subsiding to 2 to
4 feet. 
.tonight...northwest winds 10 to 20 knots. waves subsiding to
1 to 3 feet. 
.thursday...northwest winds 5 to 15 knots becoming west less than
10 knots in the afternoon, then becoming southeast 10 to 20 knots
late. waves subsiding to calm to 2 feet. 
.thursday night...east gales to 40 knots. freezing spray. snow
showers likely. waves building to 12 to 17 feet occasionally to
21 feet. 
.friday...north gales to 40 knots diminishing to 20 to 30 knots
by mid afternoon. freezing spray. a chance of snow showers. waves
subsiding to 5 to 8 feet occasionally to 10 feet. 
.friday night...northwest winds 15 to 25 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots becoming east 20 to
30 knots. freezing spray. a chance of snow showers. waves
building to 5 to 8 feet occasionally to 10 feet. 
.sunday...northeast gales to 40 knots becoming north gales to
45 knots. heavy freezing spray. a chance of snow showers. waves
building to 15 to 20 feet occasionally to 25 feet. 

$$