• CLASSIC IWINDSURF
    Classic myiWindsurfClassic Wind & Weather maps and graphs
Hello Guest
 • 

Classic iWindsurf
kiter? see iKitesurf.com
Grab the iWindsurf Mobile App & Sign On to the New iWindsurf Website
Hi guest · Get your free membership now · Log In ·
WI - MN / IA

Real-Time Data
 > Dynamic Map
 > Wind Obs Map
 > Radar + Satellite Map
 > Wind Obs Summary

Computer Forecasts
 > Model Tables
 > Wind Vector Fx Map
 > Wind FlowViz Fx Map

More Maps

Other Resources
Wind Graphs
Meteograms

Watches/Warnings
>None Active

New iWindsurf: Select your region for wind observations & forecasts:
North America | Europe | South America | Australia & Oceania | Asia | Africa

fzus63 kmqt 290201
glfls 
expires:202508290800;;511255

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu aug 28 2025

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 northern ontario moves over lake superior and 
resides over the great lakes region through the weekend before 
merging with a high of 30.2 inches over the northeast us by monday. 
behind this, a 29.8 inch trough looks to move over lake superior 
around the tuesday/tuesday night time period.



lsz162-290800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt thu aug 28 2025 /901 pm cdt thu aug 28 2025/

.rest of tonight...east winds 5 to 15 knots veering southeast
late. waves calm to 2 feet. 
.friday...southeast winds 5 to 15 knots backing east late. waves
calm to 2 feet. 
.friday night...east winds less than 10 knots veering west after
midnight, then increasing to 5 to 15 knots late. waves calm to
2 feet. 
.saturday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots veering west
after midnight. waves calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...south winds 5 to 15 knots veering west after
midnight. waves calm to 2 feet. 
.monday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...southwest winds 10 to 20 knots veering north. a chance
of showers. waves building to 1 to 3 feet. 

$$
fzus63 kmqt 290201
glfls 
expires:202508290800;;511256

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu aug 28 2025

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 northern ontario moves over lake superior and 
resides over the great lakes region through the weekend before 
merging with a high of 30.2 inches over the northeast us by monday. 
behind this, a 29.8 inch trough looks to move over lake superior 
around the tuesday/tuesday night time period.



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-
1001 pm edt thu aug 28 2025

.rest of tonight...east winds 5 to 15 knots veering south late.
waves calm to 2 feet. 
.friday...south winds 5 to 15 knots. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots veering southwest after
midnight. waves calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...south winds 5 to 15 knots veering southwest after
midnight. waves calm to 2 feet. 
.monday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...southwest winds 10 to 20 knots veering north. a chance
of showers. waves building to 2 to 4 feet. 

$$
© Copyright 2025 WeatherFlow, Inc · Contact Us ·