fzus63 kmqt 021401
glfls 
expires:202607022000;;281585

open lake forecast for lake superior
national weather service marquette mi
1001 am edt thu jul 2 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 broad 29.6 inch low over ontario and quebec will consolidate over 
northern quebec by this evening, keeping 29.9 inch troughing over 
the lake today. tonight, 30.1 inch high pressure develops over the 
southern appalachian range with 30.0 inch high pressure over mostly 
northern manitoba while broad troughing is in the lee of the 
rockies. friday, the manitoba high builds to 30.1 and expands over 
western hudson bay and far northwestern ontario. the high builds to 
30.2 inches over hudson bay saturday and into sunday as a weak 29.9 
inch low passes through the southern great lakes basin. monday, the 
high quickly becomes dislodged to the southeast by a 29.7 inch low 
over northern manitoba, sending the high over lake superior, 
northern ontario, and quebec. by tuesday, the high shifts to new 
england while the low moves into hudson bay.




lsz162-022000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt thu jul 2 2026 /901 am cdt thu jul 2 2026/

.rest of today...southwest winds 10 to 20 knots. patchy dense fog
by late morning. waves calm to 2 feet building to 1 to 3 feet. 
.tonight...west winds 5 to 15 knots veering north after midnight,
then veering northeast late. a slight chance of showers and
thunderstorms. waves subsiding to calm to 2 feet. 
.friday...northeast winds 5 to 15 knots. a slight chance of
showers. a slight chance of thunderstorms by mid afternoon. waves
calm to 2 feet. 
.friday night...northeast winds 5 to 15 knots. a chance of
showers. waves calm to 2 feet. 
.saturday...northeast winds 10 to 20 knots. a chance of showers.
waves building to 1 to 3 feet. 
.saturday night...northeast winds 5 to 15 knots. a chance of
showers. waves subsiding to calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots backing north. waves calm
to 2 feet. 
.monday...north winds 5 to 15 knots backing west. waves calm to
2 feet. 

$$

fzus63 kmqt 021401
glfls 
expires:202607022000;;281586

open lake forecast for lake superior
national weather service marquette mi
1001 am edt thu jul 2 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 broad 29.6 inch low over ontario and quebec will consolidate over 
northern quebec by this evening, keeping 29.9 inch troughing over 
the lake today. tonight, 30.1 inch high pressure develops over the 
southern appalachian range with 30.0 inch high pressure over mostly 
northern manitoba while broad troughing is in the lee of the 
rockies. friday, the manitoba high builds to 30.1 and expands over 
western hudson bay and far northwestern ontario. the high builds to 
30.2 inches over hudson bay saturday and into sunday as a weak 29.9 
inch low passes through the southern great lakes basin. monday, the 
high quickly becomes dislodged to the southeast by a 29.7 inch low 
over northern manitoba, sending the high over lake superior, 
northern ontario, and quebec. by tuesday, the high shifts to new 
england while the low moves into hudson bay.




lsz263-022000-
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-
1001 am edt thu jul 2 2026

.rest of today...southwest winds 10 to 20 knots. patchy dense
fog. waves 1 to 3 feet building to 2 to 4 feet. 
.tonight...west winds 10 to 20 knots diminishing to 5 to 15 knots
after midnight, then becoming northeast less than 10 knots late.
waves subsiding to calm to 2 feet. 
.friday...northeast winds 5 to 15 knots veering east late. waves
calm to 2 feet. 
.friday night...northeast winds 5 to 15 knots. a chance of
showers. waves calm to 2 feet. 
.saturday...northeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. a chance of showers. waves building to
1 to 3 feet. 
.saturday night...northeast winds 5 to 15 knots. a chance of
showers. waves subsiding to calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots backing west. waves calm
to 2 feet. 
.monday...southwest winds 5 to 15 knots. waves calm to 2 feet. 

$$