• 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

fzus53 kdlh 210717
nshdlh
expires:202512211700;;957385

nearshore marine forecast
national weather service duluth mn
117 am cst sun dec 21 2025

for waters within five 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.


lsz121-211700-
chequamegon bay-bayfield to oak point wi-
117 am cst sun dec 21 2025

...small craft advisory in effect until 4 am cst early this
morning...

.today...southwest wind 5 to 10 knots. mostly sunny. waves 1 foot
or less. 
.tonight...south wind 5 knots. slight chance of snow after
midnight. waves 1 foot or less. 
.monday...south wind 5 knots becoming east in the afternoon.
slight chance of snow through the day. waves 1 foot or less. 
.monday night...southeast wind 5 knots becoming southwest after
midnight. slight chance of snow in the evening. waves 1 foot or
less. 

$$
fzus53 kdlh 210717
nshdlh
expires:202512211700;;957376

nearshore marine forecast
national weather service duluth mn
117 am cst sun dec 21 2025

for waters within five 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.


lsz140-211700-
grand portage to grand marais mn-
117 am cst sun dec 21 2025

...gale warning in effect until 4 am cst early this morning...

.today...northwest wind 5 to 10 knots with gusts to around
20 knots becoming west in the afternoon. partly sunny. waves 1 to
2 feet. 
.tonight...southwest wind 5 to 10 knots. mostly cloudy. waves
1 to 2 feet. 
.monday...south wind 5 to 10 knots becoming east in the late
morning and afternoon. cloudy. waves 1 to 2 feet. 
.monday night...southeast wind 10 to 15 knots becoming west early
in the morning. gusts up to 20 knots. chance of snow. waves 1 to
2 feet. 

$$
fzus53 kdlh 210717
nshdlh
expires:202512211700;;957377

nearshore marine forecast
national weather service duluth mn
117 am cst sun dec 21 2025

for waters within five 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.


lsz141-211700-
grand marais to taconite harbor mn-
117 am cst sun dec 21 2025

...small craft advisory in effect until 4 am cst early this
morning...

.today...northwest wind 5 to 10 knots becoming southwest in the
afternoon. mostly sunny. waves 1 foot or less. 
.tonight...southwest wind 5 to 10 knots. mostly cloudy. waves
1 to 2 feet. 
.monday...east wind 5 to 10 knots. slight chance of snow in the
afternoon. waves 1 foot or less. 
.monday night...east wind 5 to 10 knots becoming west with gusts
to around 20 knots early in the morning. chance of snow in the
evening, then slight chance of snow after midnight. waves 1 to
2 feet. 

$$
fzus53 kdlh 210717
nshdlh
expires:202512211700;;957378

nearshore marine forecast
national weather service duluth mn
117 am cst sun dec 21 2025

for waters within five 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.


lsz142-211700-
taconite harbor to silver bay harbor mn-
117 am cst sun dec 21 2025

...small craft advisory in effect until 4 am cst early this
morning...

.today...west wind 5 to 10 knots becoming southwest in the
afternoon. mostly sunny. waves 1 to 2 feet. 
.tonight...southwest wind 5 to 10 knots. mostly cloudy. waves
1 to 2 feet. 
.monday...east wind 5 knots rising to 5 to 10 knots late in the
afternoon. slight chance of snow in the afternoon. waves 1 foot
or less. 
.monday night...southeast wind 5 to 10 knots becoming southwest
after midnight, then becoming west with gusts to around 20 knots
early in the morning. chance of snow in the evening, then slight
chance of snow after midnight. waves 1 foot or less. 

$$
fzus53 kdlh 210717
nshdlh
expires:202512211700;;957379

nearshore marine forecast
national weather service duluth mn
117 am cst sun dec 21 2025

for waters within five 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.


lsz143-211700-
silver bay harbor to two harbors mn-
117 am cst sun dec 21 2025

...small craft advisory in effect until 4 am cst early this
morning...

.today...west wind 5 to 10 knots becoming southwest in the
afternoon. mostly sunny. waves 1 to 2 feet. 
.tonight...southwest wind 5 to 10 knots. partly cloudy in the
evening then becoming mostly cloudy. waves 1 to 2 feet. 
.monday...east wind 5 to 10 knots. slight chance of snow through
the day. waves 1 foot or less. 
.monday night...east wind 5 to 10 knots becoming southeast late
in the evening, then becoming southwest with gusts to around
20 knots after midnight. slight chance of snow in the evening.
waves 1 foot or less. 

$$
fzus53 kdlh 210717
nshdlh
expires:202512211700;;957380

nearshore marine forecast
national weather service duluth mn
117 am cst sun dec 21 2025

for waters within five 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.


lsz144-211700-
two harbors to duluth mn-
117 am cst sun dec 21 2025

...small craft advisory in effect until 4 am cst early this
morning...

.today...west wind 5 to 10 knots becoming southwest in the
afternoon. mostly sunny. waves 1 to 2 feet. 
.tonight...southwest wind 5 to 10 knots becoming southeast early
in the morning. partly cloudy in the evening then becoming mostly
cloudy. waves 1 to 2 feet. 
.monday...east wind 5 to 10 knots. slight chance of snow through
the day. slight chance of light freezing rain in the afternoon.
waves 1 foot or less. 
.monday night...east wind 5 to 10 knots becoming south late in
the evening, then becoming west 10 to 15 knots with gusts to
around 20 knots after midnight. slight chance of snow in the
evening. waves 1 to 2 feet. 

$$
fzus53 kdlh 210717
nshdlh
expires:202512211700;;957381

nearshore marine forecast
national weather service duluth mn
117 am cst sun dec 21 2025

for waters within five 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.


lsz145-211700-
duluth mn to port wing wi-
117 am cst sun dec 21 2025

...heavy freezing spray warning in effect until 4 am cst early
this morning...
...small craft advisory in effect until 4 am cst early this
morning...

.today...southwest wind 10 to 15 knots easing to 5 to 10 knots
late in the afternoon. mostly sunny. waves 1 to 2 feet. 
.tonight...south wind 5 to 10 knots. slight chance of snow after
midnight. waves 1 foot or less. 
.monday...southeast wind 5 knots becoming east in the afternoon.
slight chance of snow through the day. slight chance of light
freezing rain in the afternoon. waves 1 foot or less. 
.monday night...east wind 5 to 10 knots becoming southwest 10 to
15 knots with gusts to around 20 knots after midnight. slight
chance of snow in the evening. waves 1 to 2 feet. 

$$
fzus53 kdlh 210717
nshdlh
expires:202512211700;;957382

nearshore marine forecast
national weather service duluth mn
117 am cst sun dec 21 2025

for waters within five 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.


lsz146-211700-
port wing to sand island wi-
117 am cst sun dec 21 2025

...heavy freezing spray warning in effect until 4 am cst early
this morning...
...small craft advisory in effect until 4 am cst early this
morning...

.today...west wind 10 to 15 knots becoming southwest 5 to
10 knots in the late morning and afternoon. partly sunny. waves
1 to 2 feet. 
.tonight...southwest wind 5 to 10 knots. partly cloudy in the
evening then becoming mostly cloudy. waves 1 foot or less. 
.monday...southeast wind 5 knots becoming east in the afternoon.
slight chance of snow through the day. waves 1 foot or less. 
.monday night...east wind 5 to 10 knots becoming southwest 10 to
15 knots with gusts to around 20 knots after midnight. slight
chance of snow in the evening. waves 1 to 2 feet. 

$$
fzus53 kdlh 210717
nshdlh
expires:202512211700;;957383

nearshore marine forecast
national weather service duluth mn
117 am cst sun dec 21 2025

for waters within five 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.


lsz147-211700-
sand island to bayfield wi-
117 am cst sun dec 21 2025

...heavy freezing spray warning in effect until 4 am cst early
this morning...
...small craft advisory in effect until 4 am cst early this
morning...

.today...west wind 10 to 15 knots becoming southwest 5 to
10 knots late in the afternoon. mostly cloudy in the morning then
becoming mostly sunny. waves 1 to 2 feet. 
.tonight...southwest wind 5 to 10 knots. partly cloudy in the
evening then becoming mostly cloudy. waves 1 foot or less. 
.monday...south wind 5 knots becoming east in the afternoon.
slight chance of snow through the day. waves 1 foot or less. 
.monday night...southeast wind 5 knots becoming southwest with
gusts to around 20 knots after midnight. slight chance of snow in
the evening. waves 1 foot or less. 

$$
fzus53 kdlh 210717
nshdlh
expires:202512211700;;957386

nearshore marine forecast
national weather service duluth mn
117 am cst sun dec 21 2025

for waters within five 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.


lsz148-211700-
oak point to saxon harbor wi-
117 am cst sun dec 21 2025

...heavy freezing spray warning in effect until 4 am cst early
this morning...
...small craft advisory in effect until 4 am cst early this
morning...

.today...southwest wind 10 to 15 knots. mostly sunny. waves 1 to
2 feet. 
.tonight...southwest wind 5 to 10 knots. slight chance of snow
after midnight. waves 1 foot or less. 
.monday...south wind 5 knots becoming southeast in the afternoon.
slight chance of snow. waves 1 foot or less. 
.monday night...southeast wind 5 knots becoming west early in the
morning. slight chance of snow in the evening. waves 1 foot or
less. 

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