fzus63 kmqt 040801
glfls 
expires:202607042000;;385467

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat jul 4 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 over the hudson bay will extend a 30.0 inch ridge 
south over lake superior through sunday. late sunday night into 
monday, the high is pushed southeast into quebec at 30.1 inches by a 
29.6 inch low over northern manitoba. the low deepens to 29.5 inches 
by tuesday morning, potentially extending a 29.9 inch trough over 
the lake. meanwhile, 30.1 inch high pressure builds over the 
northern plains, then moves over the great lakes for wednesday, 
weakening to 29.9 inches but remaining over the lake through 
thursday.




lsz162-042000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt sat jul 4 2026 /300 am cdt sat jul 4 2026/

.early this morning...northeast winds 5 to 15 knots. patchy fog.
a slight chance of showers and thunderstorms. waves calm to
2 feet. 
.today...northeast winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. waves building to 1 to 3 feet. 
.tonight...northeast winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. a slight chance of showers after
midnight. waves subsiding to calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then diminishing to 5 to 15 knots
late. waves calm to 2 feet. 
.sunday night...northeast winds 5 to 15 knots diminishing to less
than 10 knots after midnight. waves calm to 2 feet. 
.monday...north winds less than 10 knots. waves calm to 2 feet. 
.monday night...north winds less than 10 knots becoming west 5 to
15 knots after midnight. waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots veering west. waves calm
to 2 feet. 
.wednesday...northeast winds 5 to 15 knots. a chance of showers.
waves calm to 2 feet. 

$$

fzus63 kmqt 040801
glfls 
expires:202607042000;;385468

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat jul 4 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 over the hudson bay will extend a 30.0 inch ridge 
south over lake superior through sunday. late sunday night into 
monday, the high is pushed southeast into quebec at 30.1 inches by a 
29.6 inch low over northern manitoba. the low deepens to 29.5 inches 
by tuesday morning, potentially extending a 29.9 inch trough over 
the lake. meanwhile, 30.1 inch high pressure builds over the 
northern plains, then moves over the great lakes for wednesday, 
weakening to 29.9 inches but remaining over the lake through 
thursday.




lsz263-042000-
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 sat jul 4 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 15 to
25 knots. waves building to 1 to 3 feet. 
.tonight...northeast winds 5 to 15 knots veering east after
midnight. a slight chance of showers after midnight. waves
subsiding to calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...northeast winds 5 to 15 knots becoming east less
than 10 knots after midnight. waves calm to 2 feet. 
.monday...southeast winds less than 10 knots veering south by mid
afternoon. waves calm to 2 feet. 
.monday night...south winds 5 to 15 knots veering southwest after
midnight. waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots veering west. waves calm
to 2 feet. 
.wednesday...northeast winds 5 to 15 knots. a chance of showers.
waves calm to 2 feet. 

$$