fzus63 kmqt 310801
glfls 
expires:202605312000;;938691

open lake forecast for lake superior
national weather service marquette mi
400 am edt sun may 31 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 30.2 inch high pressure gradually weakens today to 30.0 inches. 
another high pressure of 30.4 inches approaches the area from hudson 
bay tonight through monday, becoming centered over the great lakes 
by tuesday morning. the high weakens to 30.3 inches for tuesday 
night, then moves southeast on wednesday to the ohio river valley. 
meanwhile, a 29.9 inch trough approaches from the northwest, moving 
over lake superior on thursday.




lsz162-312000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt sun may 31 2026 /301 am cdt sun may 31 2026/

.early this morning...northeast winds 5 to 15 knots. waves 1 to
3 feet subsiding to calm to 2 feet. 
.today...east winds 5 to 15 knots backing northeast in the
afternoon. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots backing north late. waves
calm to 2 feet. 
.monday...northeast winds 10 to 20 knots increasing to 15 to
25 knots late. waves building to 2 to 4 feet. 
.monday night...northeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.tuesday...east winds 5 to 15 knots backing northeast by mid
afternoon. waves calm to 2 feet. 
.tuesday night...northeast winds 5 to 15 knots becoming north
less than 10 knots after midnight. waves calm to 2 feet. 
.wednesday...southwest winds 5 to 15 knots. a chance of showers.
waves calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots becoming west 10 to
20 knots. a chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 310801
glfls 
expires:202605312000;;938692

open lake forecast for lake superior
national weather service marquette mi
400 am edt sun may 31 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 30.2 inch high pressure gradually weakens today to 30.0 inches. 
another high pressure of 30.4 inches approaches the area from hudson 
bay tonight through monday, becoming centered over the great lakes 
by tuesday morning. the high weakens to 30.3 inches for tuesday 
night, then moves southeast on wednesday to the ohio river valley. 
meanwhile, a 29.9 inch trough approaches from the northwest, moving 
over lake superior on thursday.




lsz263-312000-
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-
401 am edt sun may 31 2026

.early this morning...south winds less than 10 knots. waves calm
to 2 feet. 
.today...south winds less than 10 knots becoming southwest 5 to
15 knots in the afternoon, then backing northeast late. waves
calm to 2 feet. 
.tonight...east winds 5 to 15 knots. waves calm to 2 feet. 
.monday...northeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. waves building to 2 to 4 feet. 
.monday night...northeast winds 10 to 20 knots becoming east 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.tuesday...east winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday night...east winds 5 to 15 knots veering southwest after
midnight. waves calm to 2 feet. 
.wednesday...southwest winds 10 to 20 knots becoming south 5 to
15 knots. a chance of showers. waves building to 1 to 3 feet,
then subsiding to calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots veering northwest. a
chance of showers. waves 1 to 3 feet. 

$$