fzus63 kmqt 012001
glfls 
expires:202608020800;;459456

open lake forecast for lake superior
national weather service marquette mi
401 pm 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...

ridging of around 30.0 inches builds over lake superior from 
northern ontario tonight and persists through monday afternoon as a 
29.6 inch low over central indiana moves slowly through the ohio 
river valley. a 29.8 inch trough moves over the lake monday night 
into tuesday as a 29.5 inch low tracks over far northern hudson bay. 
ridging returns on wednesday as 30.0 to 30.1 inch high pressure 
builds into the great lakes from the northern plains.




lsz162-020800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt sat aug 1 2026 /301 pm cdt sat aug 1 2026/

.late this afternoon...northeast winds 5 to 15 knots. a slight
chance of showers. 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 increasing to 10 to
20 knots late. waves calm to 2 feet. 
.sunday night...northeast winds 10 to 20 knots diminishing to
5 to 15 knots 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...west winds 10 to 20 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.tuesday night...west winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight. waves calm to 2 feet. 
.wednesday...southwest winds 5 to 15 knots. waves calm to 2 feet.
.thursday...southwest winds 10 to 20 knots. waves calm to 2 feet.

$$

fzus63 kmqt 012001
glfls 
expires:202608020800;;459457

open lake forecast for lake superior
national weather service marquette mi
401 pm 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...

ridging of around 30.0 inches builds over lake superior from 
northern ontario tonight and persists through monday afternoon as a 
29.6 inch low over central indiana moves slowly through the ohio 
river valley. a 29.8 inch trough moves over the lake monday night 
into tuesday as a 29.5 inch low tracks over far northern hudson bay. 
ridging returns on wednesday as 30.0 to 30.1 inch high pressure 
builds into the great lakes from the northern plains.




lsz263-020800-
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 aug 1 2026

.late this afternoon...northeast winds 10 to 20 knots. 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...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. a chance of showers.
waves 1 to 3 feet. 
.tuesday night...west winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...west winds 10 to 20 knots backing southwest. waves
calm to 2 feet. 
.thursday...southwest winds 10 to 20 knots. waves building to
1 to 3 feet, then subsiding to calm to 2 feet. 

$$