fzus63 kmqt 010801
glfls 
expires:202608012000;;432260

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat aug 1 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... 

early this morning a 29.6 inch low is over northern illinois while a 
30.0 inch high is over manitoba. through the weekend, the high 
shifts east over northern ontario, extending weak ridging over the 
lake while the low moves south of the great lakes. meanwhile, a 29.3 
inch low moves from saskatchewan into northern manitoba sunday night 
into monday morning. by monday night, this low will force the 30.0 
inch high over the lower great lakes as the low weakens to 29.5 
inches over western hudson bay. this sends a 29.9 inch trough over 
the lake monday night and tuesday while the high shifts to the east 
coast and builds to 30.2 inches. while the low spins over hudson 
bay, a 30.0 inch high over the northern plains moves east 
over the great lakes wednesday and thursday.




lsz162-012000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt sat aug 1 2026 /301 am cdt sat aug 1 2026/

.early this morning...north winds 5 to 15 knots. waves calm to
2 feet. 
.today...northeast winds 5 to 15 knots veering east in the
afternoon, then backing northeast late. a slight chance of
showers by mid afternoon. waves calm to 2 feet. 
.tonight...north winds 5 to 15 knots veering northeast late.
waves calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...northeast winds 5 to 15 knots veering east after
midnight. waves calm to 2 feet. 
.monday...east winds 5 to 15 knots. waves calm to 2 feet. 
.monday night...east winds 5 to 15 knots veering southwest after
midnight. a chance of showers after midnight. waves calm to
2 feet. 
.tuesday...southwest winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 
.wednesday...southwest winds 5 to 15 knots. waves calm to 2 feet.

$$

fzus63 kmqt 010801
glfls 
expires:202608012000;;432261

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat aug 1 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... 

early this morning a 29.6 inch low is over northern illinois while a 
30.0 inch high is over manitoba. through the weekend, the high 
shifts east over northern ontario, extending weak ridging over the 
lake while the low moves south of the great lakes. meanwhile, a 29.3 
inch low moves from saskatchewan into northern manitoba sunday night 
into monday morning. by monday night, this low will force the 30.0 
inch high over the lower great lakes as the low weakens to 29.5 
inches over western hudson bay. this sends a 29.9 inch trough over 
the lake monday night and tuesday while the high shifts to the east 
coast and builds to 30.2 inches. while the low spins over hudson 
bay, a 30.0 inch high over the northern plains moves east 
over the great lakes wednesday and thursday.




lsz263-012000-
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 sat aug 1 2026

.early this morning...northeast winds 5 to 15 knots. patchy fog.
waves calm to 2 feet. 
.today...northeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. patchy fog through early afternoon.
waves calm to 2 feet. 
.tonight...northeast winds 5 to 15 knots. waves calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...east winds 5 to 15 knots veering southeast after
midnight. waves calm to 2 feet. 
.monday...south winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.monday night...southeast winds 10 to 20 knots veering south
after midnight. waves building to 1 to 3 feet. 
.tuesday...southwest winds 10 to 20 knots becoming northwest 5 to
15 knots. a chance of showers. waves subsiding to calm to 2 feet.
.wednesday...west winds 10 to 20 knots becoming southwest 5 to
15 knots. waves calm to 2 feet. 

$$