fzus63 kmqt 042001
glfls 
expires:202607050800;;414393

open lake forecast for lake superior
national weather service marquette mi
401 pm 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 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 over 
hudson bay by tuesday morning, potentially extending a 29.9 inch 
trough over the lake. meanwhile, 30.1 inch high pressure builds over 
the canadian prairie and then moves over the upper great lakes for 
wednesday, weakening to 29.9 inches but remaining over the lake 
through thursday.




lsz162-050800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt sat jul 4 2026 /301 pm cdt sat jul 4 2026/

.late this afternoon...northeast winds 15 to 25 knots. a slight
chance of showers. waves 1 to 3 feet. 
.tonight...northeast winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. a slight chance of showers. 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 increasing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.monday night...north winds less than 10 knots becoming southwest
5 to 15 knots after midnight. waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday night...west winds 5 to 15 knots. a chance of showers
through midnight, then showers likely after midnight. waves calm
to 2 feet. 
.wednesday...northeast winds 5 to 15 knots. showers likely. a
chance of showers. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 042001
glfls 
expires:202607050800;;414394

open lake forecast for lake superior
national weather service marquette mi
401 pm 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 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 over 
hudson bay by tuesday morning, potentially extending a 29.9 inch 
trough over the lake. meanwhile, 30.1 inch high pressure builds over 
the canadian prairie and then moves over the upper great lakes for 
wednesday, weakening to 29.9 inches but remaining over the lake 
through thursday.




lsz263-050800-
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 jul 4 2026

.late this afternoon...northeast winds 15 to 25 knots. a slight
chance of showers. waves 1 to 3 feet. 
.tonight...northeast winds 5 to 15 knots veering east 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 veering east after
midnight, then diminishing to less than 10 knots late. waves calm
to 2 feet. 
.monday...east winds less than 10 knots. waves calm to 2 feet. 
.monday night...southeast winds 5 to 15 knots veering southwest
after midnight. waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday night...southwest winds 5 to 15 knots becoming west less
than 10 knots after midnight. a chance of showers. waves calm to
2 feet. 
.wednesday...northeast winds 5 to 15 knots. showers likely. a
chance of showers. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots. waves calm to 2 feet. 

$$