fzus63 kmqt 302001
glfls 
expires:202605310800;;910828

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat may 30 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 30.3 inch high pressure over northern ontario will weaken 
throughout today, becoming 30.2 inches over the upper great lakes 
tonight. the high remains over the area into tomorrow while 
progressively weakening with time, eventually becoming around 30.0 
inches by late tomorrow as another 30.4 inch high approaches the 
area from hudson bay. this second high settles north of the great 
lakes monday before arriving over the lake by tuesday. the high 
moves over the lower great lakes at 30.2 inches wednesday evening as 
a 29.9 inch trough moves over the northern plains. this trough moves 
near lake superior thursday, strengthening to 29.7 inches.




lsz162-310800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt sat may 30 2026 /301 pm cdt sat may 30 2026/

.late this afternoon...northeast winds 10 to 20 knots. waves 3 to
5 feet occasionally to 7 feet. 
.tonight...northeast winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...north winds 5 to 15 knots veering northeast late.
waves calm to 2 feet. 
.monday...northeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. 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...northeast winds 5 to 15 knots. 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 302001
glfls 
expires:202605310800;;910829

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat may 30 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 30.3 inch high pressure over northern ontario will weaken 
throughout today, becoming 30.2 inches over the upper great lakes 
tonight. the high remains over the area into tomorrow while 
progressively weakening with time, eventually becoming around 30.0 
inches by late tomorrow as another 30.4 inch high approaches the 
area from hudson bay. this second high settles north of the great 
lakes monday before arriving over the lake by tuesday. the high 
moves over the lower great lakes at 30.2 inches wednesday evening as 
a 29.9 inch trough moves over the northern plains. this trough moves 
near lake superior thursday, strengthening to 29.7 inches.




lsz263-310800-
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 pm edt sat may 30 2026

.late this afternoon...northeast winds 10 to 20 knots. waves 3 to
5 feet occasionally to 7 feet. 
.tonight...east winds 10 to 20 knots becoming southeast 5 to
15 knots after midnight, then becoming south less than 10 knots
late. waves subsiding to calm to 2 feet. 
.sunday...south winds less than 10 knots veering southwest in the
afternoon. waves calm to 2 feet. 
.sunday night...east winds less than 10 knots increasing to 5 to
15 knots after midnight. waves calm to 2 feet. 
.monday...northeast winds 10 to 20 knots. 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 backing northeast by mid
afternoon. 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. 
.thursday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots. a chance of showers. waves 1 to 3 feet. 

$$