• 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 ·
IL- chicago area

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 kapx 230729
nshapx
expires:202608231530;;212888

nearshore marine forecast
national weather service gaylord mi
329 am edt sun aug 23 2026

for waters within five nautical miles of shore on lakes huron...
michigan and 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.


lmz346-231530-
manistee to point betsie mi-
329 am edt sun aug 23 2026

...small craft advisory in effect through late tonight...

.today...northwest wind 15 to 25 knots. slight chance of
waterspouts. slight chance of showers. waves 4 to 6 feet. 
.tonight...north wind 10 to 20 knots. partly cloudy. waves 3 to
5 feet. 
.monday...northwest wind 10 to 15 knots. sunny. waves 2 to
3 feet. 
.monday night...northeast wind 5 to 10 knots. partly cloudy.
waves 2 feet or less. 

see the open lakes forecast for days 3 through 5.

$$
fzus53 kgrb 231158
nshgrb
expires:202608231600;;222923

nearshore marine forecast
national weather service green bay wi
658 am cdt sun aug 23 2026

for waters within five nautical miles of shore on lake michigan


lmz542-543-231600-
sturgeon bay to two rivers wi-two rivers to sheboygan wi-
658 am cdt sun aug 23 2026

.today...nw wind 10 to 20 kts. waves 1 to 3 ft. sunny in the
morning then becoming partly cloudy. 
.tonight...n wind 10 to 15 kts backing nw after midnight. waves
1 to 3 ft. clear.
.monday...nw wind 10 to 15 kts. waves 2 ft or less. mostly sunny.
.monday night...s wind 5 to 10 kts veering sw after midnight.
waves 2 ft or less. partly cloudy.  

$$
fzus53 kgrr 231258
nshgrr
expires:202608232000;;224730

nearshore marine forecast
national weather service grand rapids mi
858 am edt sun aug 23 2026

for waters within five nautical miles of shore on lake michigan


lmz849-232000-
pentwater to manistee mi-
858 am edt sun aug 23 2026

...small craft advisory in effect through this evening...

.today...northwest winds 20 to 25 knots. mostly sunny. a slight
chance of rain showers in the morning. waves 4 to 6 feet. 
.tonight...north winds 15 to 25 knots. partly cloudy. waves 3 to
5 feet. 
.monday...northwest winds 10 to 20 knots. sunny. waves 3 to 5 feet
subsiding to 2 to 4 feet early in the afternoon. 
.monday night...northwest winds 5 to 15 knots backing south after
midnight. partly cloudy. waves 1 to 3 feet. 
.tuesday...south winds 5 to 10 knots veering southwest 10 to
20 knots in the late morning and afternoon. mostly sunny. waves 1 to
2 feet. 
.wednesday...south winds to 30 knots. partly sunny with a chance of
showers and thunderstorms. waves 4 to 6 feet. 
.thursday...northwest winds 10 to 20 knots. mostly sunny. waves 2 to
4 feet. 

$$
fzus53 kgrr 231258
nshgrr
expires:202608232000;;224735

nearshore marine forecast
national weather service grand rapids mi
858 am edt sun aug 23 2026

for waters within five nautical miles of shore on lake michigan


lmz844-232000-
st joseph to south haven mi-
858 am edt sun aug 23 2026

...small craft advisory in effect through this evening...

.today...northwest winds 15 to 25 knots. sunny. a slight chance of
rain showers in the morning. a slight chance of waterspouts in the
morning. waves 5 to 7 feet. 
.tonight...north winds 10 to 20 knots veering northeast 5 to
10 knots after midnight. mostly clear. waves 4 to 6 feet subsiding
to 2 to 4 feet after midnight. 
.monday...north winds 5 to 15 knots backing northwest in the late
morning and afternoon. sunny. waves 2 to 4 feet. 
.monday night...northwest winds 5 to 15 knots backing west around
5 knots after midnight. mostly clear. waves 1 to 3 feet. 
.tuesday...southwest winds 5 to 10 knots veering west early in the
afternoon. sunny. waves 1 foot or less. 
.wednesday...southwest winds 15 to 20 knots. partly sunny. waves
1 to 3 feet. 
.thursday...northwest winds 10 to 15 knots. sunny. waves 2 to
4 feet. 

$$
fzus53 kgrr 231258
nshgrr
expires:202608232000;;224734

nearshore marine forecast
national weather service grand rapids mi
858 am edt sun aug 23 2026

for waters within five nautical miles of shore on lake michigan


lmz845-232000-
south haven to holland mi-
858 am edt sun aug 23 2026

...small craft advisory in effect through this evening...

.today...northwest winds 15 to 25 knots. sunny. a slight chance of
rain showers in the morning. a slight chance of waterspouts in the
morning. waves 5 to 7 feet. 
.tonight...north winds 10 to 20 knots. mostly clear. waves 4 to
6 feet subsiding to 2 to 4 feet after midnight. 
.monday...northwest winds 10 to 20 knots. sunny. waves 2 to 4 feet. 
.monday night...northwest winds 10 to 15 knots backing west around
5 knots after midnight. mostly clear. waves 2 to 4 feet. 
.tuesday...southwest winds 5 to 10 knots. sunny. waves 1 foot or
less. 
.wednesday...southwest winds 15 to 20 knots. partly sunny with a
chance of showers and thunderstorms. waves 3 to 5 feet. 
.thursday...northwest winds 15 to 20 knots. sunny. waves 2 to
4 feet. 

$$
fzus53 kgrr 231258
nshgrr
expires:202608232000;;224733

nearshore marine forecast
national weather service grand rapids mi
858 am edt sun aug 23 2026

for waters within five nautical miles of shore on lake michigan


lmz846-232000-
holland to grand haven mi-
858 am edt sun aug 23 2026

...small craft advisory in effect through this evening...

.today...northwest winds to 30 knots. sunny. a slight chance of rain
showers in the morning. a slight chance of waterspouts in the
morning. waves 5 to 7 feet. 
.tonight...north winds 15 to 25 knots decreasing to 10 to 15 knots
in the late evening and overnight. mostly clear. waves 4 to 6 feet
subsiding to 1 to 3 feet. 
.monday...northwest winds 10 to 20 knots. sunny. waves 2 to 4 feet. 
.monday night...northwest winds 15 to 20 knots becoming west around
5 knots. partly cloudy. waves 2 to 4 feet. 
.tuesday...southwest winds 5 to 15 knots. mostly sunny. waves around
1 foot. 
.wednesday...southwest winds 20 to 25 knots. partly sunny with a
chance of showers and thunderstorms. waves 3 to 5 feet. 
.thursday...northwest winds 15 to 20 knots. mostly sunny. waves 2 to
4 feet. 

$$
fzus53 kgrr 231258
nshgrr
expires:202608232000;;224732

nearshore marine forecast
national weather service grand rapids mi
858 am edt sun aug 23 2026

for waters within five nautical miles of shore on lake michigan


lmz847-232000-
grand haven to whitehall mi-
858 am edt sun aug 23 2026

...small craft advisory in effect through this evening...

.today...northwest winds to 30 knots. mostly sunny. waves 5 to
7 feet. 
.tonight...north winds 15 to 25 knots decreasing to 10 to 15 knots
in the late evening and overnight. mostly clear. waves 4 to 6 feet
subsiding to 1 to 3 feet. 
.monday...northwest winds 15 to 25 knots. sunny. waves 2 to 4 feet. 
.monday night...northwest winds 10 to 20 knots decreasing to 5 to
10 knots in the late evening and early morning, then backing west
after midnight. partly cloudy. waves 2 to 4 feet. 
.tuesday...southwest winds 5 to 15 knots. mostly sunny. waves around
1 foot. 
.wednesday...south winds 20 to 25 knots. partly sunny with rain
showers likely and a chance of thunderstorms. waves 4 to 6 feet. 
.thursday...northwest winds 15 to 20 knots. sunny. waves 2 to
4 feet. 

$$
fzus53 kgrr 231258
nshgrr
expires:202608232000;;224731

nearshore marine forecast
national weather service grand rapids mi
858 am edt sun aug 23 2026

for waters within five nautical miles of shore on lake michigan


lmz848-232000-
whitehall to pentwater mi-
858 am edt sun aug 23 2026

...small craft advisory in effect through this evening...

.today...northwest winds to 30 knots. mostly sunny. waves 5 to
7 feet. 
.tonight...north winds 15 to 25 knots. partly cloudy. waves 3 to
5 feet. 
.monday...northwest winds 15 to 25 knots. sunny. waves 2 to 4 feet. 
.monday night...northwest winds 10 to 15 knots backing southwest
5 to 10 knots after midnight. partly cloudy. waves 1 to 3 feet. 
.tuesday...southwest winds 5 to 15 knots. mostly sunny. waves 1 to
2 feet. 
.wednesday...south winds 20 to 25 knots. partly sunny with rain
showers likely and a chance of thunderstorms. waves 4 to 6 feet. 
.thursday...northwest winds 15 to 20 knots. mostly sunny. waves 2 to
4 feet. 

$$
fzus53 kiwx 230744
nshiwx
expires:202608231415;;213382

nearshore marine forecast
national weather service northern indiana
344 am edt sun aug 23 2026

for waters within five nautical miles of shore on lake michigan


lmz046-231415-
michigan city in to new buffalo mi-
344 am edt sun aug 23 2026

...small craft advisory in effect through this evening...

.today...northwest winds 10 to 20 knots becoming north. gusts up 
to 25 knots. a slight chance of waterspouts early. a slight chance
of showers early. waves 2 to 4 feet building to 3 to 5 feet. 
.tonight...north winds 10 knots or less becoming northwest.
mostly clear. waves 2 to 4 feet. 
.monday...west winds 10 knots or less becoming north. sunny.
waves around 2 feet. 
.monday night...north winds less than 10 knots. mostly clear.
waves 1 to 2 feet. 

the water temperature at michigan city is 71 degrees.

$$
fzus53 kiwx 230744
nshiwx
expires:202608231415;;213383

nearshore marine forecast
national weather service northern indiana
344 am edt sun aug 23 2026

for waters within five nautical miles of shore on lake michigan


lmz043-231415-
new buffalo mi to st joseph mi-
344 am edt sun aug 23 2026

...small craft advisory in effect through this evening...

.today...northwest winds 10 to 15 knots increasing to 15 to
20 knots. gusts up to 25 knots. a slight chance of waterspouts
early. a slight chance of showers early. waves 2 to 4 feet
building to 3 to 6 feet.
.tonight...north winds 5 to 15 knots becoming northeast less than
10 knots. mostly clear. waves 3 to 5 feet subsiding to 2 to
4 feet. 
.monday...northwest winds 10 knots or less. sunny. waves 2 to
3 feet. 
.monday night...north winds less than 10 knots. mostly clear.
waves 1 to 2 feet. 

the water temperature at michigan city is 71 degrees.

$$
fzus53 klot 230801
nshlot
expires:202608231530;;213836

nearshore marine forecast
national weather service chicago/romeoville il
301 am cdt sun aug 23 2026

for waters within five nautical miles of shore on lake michigan

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the waves, along with the
average height of the highest 10 percent of the waves which will
occasionally be encountered.


lmz741-742-231530-
wilmette harbor to northerly island il-
northerly island to calumet harbor il-
301 am cdt sun aug 23 2026

.today...northwest winds 10 to 15 kt becoming north in the
afternoon. sunny in the morning, then becoming partly cloudy. 
waves 2 to 4 ft building to 3 to 5 ft. 
.tonight...north winds 10 to 15 kt becoming northwest overnight.
partly cloudy in the evening, then becoming clear. waves 3 to 5 
ft subsiding 2 to 4 ft. 
.monday...west winds 5 to 10 kt becoming northeast in the 
afternoon. mostly sunny. waves 1 to 3 ft. 
.monday night...east winds 5 to 10 kt becoming southwest 
overnight. partly cloudy in the evening, then becoming mostly 
clear. waves 1 to 2 ft. 

$$
fzus53 klot 230801
nshlot
expires:202608231530;;213837

nearshore marine forecast
national weather service chicago/romeoville il
301 am cdt sun aug 23 2026

for waters within five nautical miles of shore on lake michigan

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the waves, along with the
average height of the highest 10 percent of the waves which will
occasionally be encountered.


lmz743>745-231530-
calumet harbor il to gary in-gary to burns harbor in-
burns harbor to michigan city in-
301 am cdt sun aug 23 2026

...small craft advisory in effect through this evening...

.today...northwest winds 10 to 15 kt becoming north and increasing
to 15 to 20 kt in the afternoon. mostly sunny in the morning, 
then becoming partly cloudy. waves 2 to 4 ft building to 4 to 6 
ft occasionally to 8 ft.
.tonight...north winds 10 to 15 kt becoming northwest overnight.
partly cloudy in the evening, then becoming mostly clear. waves
4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft. 
.monday...west winds 5 to 10 kt becoming north in the afternoon. 
mostly sunny. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.monday night...east winds around 10 kt becoming south overnight.
mostly clear. waves 1 to 2 ft.  

$$
fzus53 klot 230801
nshlot
expires:202608231530;;213835

nearshore marine forecast
national weather service chicago/romeoville il
301 am cdt sun aug 23 2026

for waters within five nautical miles of shore on lake michigan

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the waves, along with the
average height of the highest 10 percent of the waves which will
occasionally be encountered.


lmz740-231530-
winthrop harbor to wilmette harbor il-
301 am cdt sun aug 23 2026

.today...northwest winds 10 to 15 kt becoming north in the
afternoon. sunny in the morning, then becoming partly cloudy. 
waves 1 to 3 ft building to 2 to 4 ft. 
.tonight...north winds 10 to 15 kt becoming northwest 5 to 10 kt.
partly cloudy in the evening, then becoming mostly clear. waves 2
to 4 ft subsiding to 1 to 3 ft. 
.monday...northwest winds 5 to 10 kt becoming northeast in the 
afternoon. mostly sunny. waves 1 to 3 ft. 
.monday night...southeast winds around 5 kt becoming southwest
overnight. mostly clear. waves 1 to 2 ft.  

$$
fzus53 kmkx 231210
nshmkx
expires:202608231600;;223685

nearshore marine forecast
national weather service milwaukee/sullivan wi
710 am cdt sun aug 23 2026

for waters within five nautical miles of shore on lake michigan


lmz643-231600-
sheboygan to port washington wi-
710 am cdt sun aug 23 2026

.today...northwest wind 10 to 20 knots becoming 15 to 20 knots in
the late morning and early afternoon, then becoming north 10 to
15 knots with gusts to around 20 knots late in the afternoon.
slight chance of waterspouts in the morning. waves 1 to 2 feet. 
.tonight...north wind 10 to 15 knots backing northwest early in
the morning. mostly clear. waves 1 to 2 feet. 
.monday...northwest wind 10 to 15 knots becoming north 5 to
10 knots early in the afternoon, then veering east late in the
afternoon. sunny. waves around 1 foot. 
.monday night...south wind 5 to 10 knots veering west early in
the morning. partly cloudy. waves around 1 foot. 

$$
fzus53 kmkx 231210
nshmkx
expires:202608231600;;223687

nearshore marine forecast
national weather service milwaukee/sullivan wi
710 am cdt sun aug 23 2026

for waters within five nautical miles of shore on lake michigan


lmz645-231600-
north point light to wind point wi-
710 am cdt sun aug 23 2026

.today...northwest wind 5 to 15 knots becoming 10 to 15 knots
late in the morning, then veering north in the afternoon. slight
chance of waterspouts in the morning. waves 2 to 4 feet subsiding
to 1 to 2 feet in the late morning and afternoon. 
.tonight...north wind 10 to 15 knots easing to 5 to 10 knots in
the late evening and early morning, then backing northwest early
in the morning. partly cloudy through around midnight then
becoming clear. waves 1 to 2 feet. 
.monday...northwest wind 5 to 10 knots veering northeast late in
the afternoon. sunny. waves 1 to 2 feet. 
.monday night...southeast wind 5 to 10 knots veering west early
in the morning. partly cloudy. waves around 1 foot. 

$$
fzus53 kmkx 231210
nshmkx
expires:202608231600;;223688

nearshore marine forecast
national weather service milwaukee/sullivan wi
710 am cdt sun aug 23 2026

for waters within five nautical miles of shore on lake michigan


lmz646-231600-
wind point wi to winthrop harbor il-
710 am cdt sun aug 23 2026

.today...northwest wind 5 to 15 knots becoming 10 to 15 knots
late in the morning, then veering north early in the afternoon
backing northwest late in the afternoon. slight chance of
waterspouts in the morning. waves 1 to 2 feet. 
.tonight...north wind 5 to 10 knots backing northwest after
midnight. mostly clear. waves 1 to 2 feet. 
.monday...northwest wind 5 to 10 knots veering northeast late in
the afternoon. sunny. waves 1 to 2 feet. 
.monday night...east wind 5 to 10 knots veering south late in the
evening, then veering southwest after midnight veering west early
in the morning. partly cloudy. waves around 1 foot. 

$$
fzus53 kmkx 231210
nshmkx
expires:202608231600;;223686

nearshore marine forecast
national weather service milwaukee/sullivan wi
710 am cdt sun aug 23 2026

for waters within five nautical miles of shore on lake michigan


lmz644-231600-
port washington to north point light wi-
710 am cdt sun aug 23 2026

.today...northwest wind 5 to 15 knots becoming 10 to 15 knots
with gusts to around 20 knots in the late morning and early
afternoon, then becoming northwest 10 to 15 knots late in the
afternoon. slight chance of waterspouts in the morning. waves
1 to 2 feet. 
.tonight...north wind 5 to 15 knots becoming 5 to 10 knots late
in the evening, then becoming north 5 to 10 knots after midnight.
partly cloudy through around midnight then becoming clear. waves
1 to 2 feet. 
.monday...northwest wind 5 to 10 knots veering northeast late in
the afternoon. sunny. waves 1 to 2 feet. 
.monday night...southwest wind 5 to 10 knots veering west early
in the morning. partly cloudy. waves around 1 foot. 

$$
© Copyright 2026 WeatherFlow, Inc · Contact Us ·