fzus63 kmqt 280801
glfls 
expires:202605282000;;777396

open lake forecast for lake superior
national weather service marquette mi
400 am edt thu may 28 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... 

ridging strengthens to 30.3 inches over lake superior today as high 
pressure shifts southward from hudson bay. pressure falls to around 
30.0 inches over the lake on friday as the high weakens to 30.1 
inches over lower michigan. a second high pushing in from hudson bay 
brings 30.3 inch ridging back over the lake on saturday, briefly 
weakening to 30.0 to 30.1 inches again on sunday. high pressure 
persists over lake superior through early next week.



lsz162-282000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt thu may 28 2026 /300 am cdt thu may 28 2026/

.early this morning...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.today...northeast winds 5 to 15 knots. waves calm to 2 feet. 
.tonight...north winds 5 to 15 knots backing west after midnight,
then backing southwest late. waves calm to 2 feet. 
.friday...southwest winds 5 to 15 knots. a slight chance of
showers by mid afternoon. waves calm to 2 feet. 
.friday night...northeast winds 10 to 20 knots increasing to
15 to 25 knots after midnight. waves building to 2 to 4 feet. 
.saturday...northeast winds 15 to 25 knots. waves building to
3 to 5 feet occasionally to 7 feet. 
.saturday night...northeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.sunday...east winds less than 10 knots becoming northeast 5 to
15 knots. waves calm to 2 feet. 
.monday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 

$$

fzus63 kmqt 280801
glfls 
expires:202605282000;;777397

open lake forecast for lake superior
national weather service marquette mi
400 am edt thu may 28 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... 

ridging strengthens to 30.3 inches over lake superior today as high 
pressure shifts southward from hudson bay. pressure falls to around 
30.0 inches over the lake on friday as the high weakens to 30.1 
inches over lower michigan. a second high pushing in from hudson bay 
brings 30.3 inch ridging back over the lake on saturday, briefly 
weakening to 30.0 to 30.1 inches again on sunday. high pressure 
persists over lake superior through early next week.



lsz263-282000-
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 thu may 28 2026

.early this morning...east winds less than 10 knots. waves calm
to 2 feet. 
.today...northeast winds less than 10 knots increasing to 5 to
15 knots in the afternoon. waves calm to 2 feet. 
.tonight...east winds less than 10 knots becoming southwest 5 to
15 knots after midnight. waves calm to 2 feet. 
.friday...southwest winds 5 to 15 knots. a slight chance of
showers and thunderstorms by mid afternoon. waves calm to 2 feet.
.friday night...east winds 10 to 20 knots. waves building to 2 to
4 feet. 
.saturday...east winds 10 to 20 knots becoming northeast 15 to
25 knots by mid afternoon. waves building to 3 to 5 feet
occasionally to 7 feet. 
.saturday night...east winds 10 to 20 knots becoming south 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.sunday...southwest winds less than 10 knots becoming northeast
5 to 15 knots. waves calm to 2 feet. 
.monday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 

$$