fzus63 kmqt 282001
glfls 
expires:202608290800;;516108

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri aug 28 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...

30.2 inch high pressure resides atop the upper great lakes before 
continuing into new england on saturday. saturday night, a low 
pressure over the central to northern plains deepens to 29.6 inches. 
this low lifts north into the canadian prairies early next week, 
with heights over lake superior subsequently falling to 29.8 inches 
by monday afternoon. weak high pressure ridging of at least 29.8 
inches returns to lake superior by tuesday.




lsz162-290800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt fri aug 28 2026 /301 pm cdt fri aug 28 2026/

.late this afternoon...southeast winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...east winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots. a chance of showers. waves
calm to 2 feet. 
.saturday night...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...northeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. a slight chance of showers by mid
afternoon. waves building to 1 to 3 feet. 
.sunday night...northeast winds 15 to 25 knots veering east after
midnight. a chance of showers. waves 1 to 3 feet. 
.monday...northeast winds 10 to 20 knots. a chance of showers.
waves subsiding to calm to 2 feet. 
.monday night...northwest winds 5 to 15 knots backing west after
midnight. waves calm to 2 feet. 
.tuesday...southwest winds 10 to 20 knots becoming northwest 5 to
15 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.wednesday...southwest winds 5 to 15 knots backing northeast.
waves calm to 2 feet. 

$$

fzus63 kmqt 282001
glfls 
expires:202608290800;;516109

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri aug 28 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...

30.2 inch high pressure resides atop the upper great lakes before 
continuing into new england on saturday. saturday night, a low 
pressure over the central to northern plains deepens to 29.6 inches. 
this low lifts north into the canadian prairies early next week, 
with heights over lake superior subsequently falling to 29.8 inches 
by monday afternoon. weak high pressure ridging of at least 29.8 
inches returns to lake superior by tuesday.




lsz263-290800-
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 fri aug 28 2026

.late this afternoon...south winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...southeast winds 5 to 15 knots veering south late.
waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots. a chance of showers. waves
calm to 2 feet. 
.saturday night...southeast winds 5 to 15 knots becoming east
less than 10 knots late. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots becoming northeast 10 to
20 knots by mid afternoon. a slight chance of showers by mid
afternoon. waves calm to 2 feet. 
.sunday night...east winds 10 to 20 knots. a chance of showers.
waves building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.monday...east winds 10 to 20 knots diminishing to 5 to 15 knots
by mid afternoon. a chance of showers. waves building to 1 to
3 feet. 
.monday night...west winds 5 to 15 knots. a chance of showers.
waves subsiding to calm to 2 feet. 
.tuesday...southwest winds 15 to 25 knots becoming west 5 to
15 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.wednesday...west winds 5 to 15 knots backing south. waves calm
to 2 feet. 

$$