• 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 131812
nshapx
expires:202608140215;;128170

nearshore marine forecast
national weather service gaylord mi
212 pm edt thu aug 13 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.


lmz346-140215-
manistee to point betsie mi-
212 pm edt thu aug 13 2026

.through early evening...light winds. mostly cloudy. waves 2 feet
or less. 
.tonight...light winds. mostly cloudy. waves 2 feet or less. 
.friday...northeast wind 10 to 15 knots. mostly sunny. waves
2 feet or less. 
.friday night...east wind 5 to 10 knots. partly cloudy. waves
2 feet or less. 
.saturday...southeast wind 5 to 10 knots. chance of showers.
waves 2 feet or less. 

see the open lakes forecast for days 3 through 5.

$$
fzus53 kgrb 132031
nshgrb
expires:202608140400;;135876

nearshore marine forecast
national weather service green bay wi
331 pm cdt thu aug 13 2026

for waters within five nautical miles of shore on lake michigan


lmz541>543-140400-
rock island passage to sturgeon bay wi-
sturgeon bay to two rivers wi-two rivers to sheboygan wi-
331 pm cdt thu aug 13 2026

.late this afternoon...se wind 5 to 10 kts. waves 2 ft or less. a
slight chance of showers. 
.tonight...ne wind 10 to 15 kts. waves 2 ft or less. mostly
cloudy in the evening then becoming partly cloudy. 
.friday...ne wind 10 to 15 kts. waves 2 to 4 ft. mostly sunny in
the morning then becoming partly cloudy. 
.friday night...ne wind 10 to 15 kts veering e after midnight.
waves 2 to 4 ft. a chance of showers after midnight. 
.saturday...se wind 10 to 20 kts. waves 4 to 7 ft. a chance of
showers in the morning, then showers likely in the afternoon. a
small craft advisory may be needed.  

$$
fzus53 kgrr 132144
nshgrr
expires:202608140800;;139097

nearshore marine forecast
national weather service grand rapids mi
544 pm edt thu aug 13 2026

for waters within five nautical miles of shore on lake michigan


lmz846-140800-
holland to grand haven mi-
544 pm edt thu aug 13 2026

.through early evening...northwest winds 5 to 10 knots. cloudy.
waves less than 1 foot. 
.tonight...northwest winds 5 to 10 knots veering northeast in the
late evening and overnight. mostly cloudy with a slight chance of
rain showers. waves less than 1 foot. 
.friday...east winds 10 to 15 knots backing north early in the
afternoon. partly sunny. waves 1 foot or less. 
.friday night...north winds around 10 knots veering east in the late
evening and overnight. partly cloudy. waves around 1 foot. 
.saturday...southeast winds 15 to 20 knots. rain showers and a
slight chance of thunderstorms. waves 1 to 2 feet. 
.saturday night...southeast winds around 15 knots veering west after
midnight. rain showers likely and a chance of thunderstorms. waves
1 to 3 feet. 
.sunday...northwest winds 10 to 15 knots. mostly cloudy. waves 2 to
4 feet. 
.monday...north winds 10 to 15 knots backing northwest 15 to
20 knots early in the afternoon. mostly sunny. waves 1 to 3 feet. 
.tuesday...southwest winds 5 to 10 knots. mostly sunny. waves 1 foot
or less. 

$$
fzus53 kgrr 132144
nshgrr
expires:202608140800;;139099

nearshore marine forecast
national weather service grand rapids mi
544 pm edt thu aug 13 2026

for waters within five nautical miles of shore on lake michigan


lmz844-140800-
st joseph to south haven mi-
544 pm edt thu aug 13 2026

.through early evening...northwest winds 5 to 10 knots. cloudy.
waves less than 1 foot. 
.tonight...north winds 5 to 10 knots veering east in the late
evening and overnight. cloudy with a chance of rain showers. waves
less than 1 foot. 
.friday...east winds around 10 knots backing northeast early in the
afternoon. mostly cloudy with a chance of rain showers. waves less
than 1 foot. 
.friday night...northeast winds 5 to 10 knots veering east 10 to
15 knots in the late evening and overnight. partly cloudy with a
chance of showers and thunderstorms. waves around 1 foot. 
.saturday...southeast winds 10 to 15 knots. rain showers likely and
a chance of thunderstorms. waves around 1 foot. 
.saturday night...south winds 10 to 15 knots veering southwest in
the late evening and overnight. rain showers likely and a chance of
thunderstorms. waves 1 to 2 feet. 
.sunday...northwest winds 10 to 15 knots. mostly cloudy. waves 1 to
2 feet. 
.monday...north winds 10 to 15 knots. mostly sunny. waves 1 to
2 feet. 
.tuesday...southwest winds 5 to 10 knots. mostly sunny. waves 1 foot
or less. 

$$
fzus53 kgrr 132144
nshgrr
expires:202608140800;;139098

nearshore marine forecast
national weather service grand rapids mi
544 pm edt thu aug 13 2026

for waters within five nautical miles of shore on lake michigan


lmz845-140800-
south haven to holland mi-
544 pm edt thu aug 13 2026

.through early evening...northwest winds around 5 knots. cloudy.
waves less than 1 foot. 
.tonight...north winds 5 to 10 knots veering northeast in the late
evening and overnight. mostly cloudy with a chance of rain showers.
waves less than 1 foot. 
.friday...east winds around 10 knots backing northeast early in the
afternoon. mostly cloudy. waves less than 1 foot. 
.friday night...north winds around 10 knots veering east in the late
evening and overnight. partly cloudy with a slight chance of showers
and thunderstorms. waves around 1 foot. 
.saturday...southeast winds around 15 knots. rain showers likely and
a chance of thunderstorms. waves 1 foot or less. 
.saturday night...southeast winds 10 to 15 knots veering west after
midnight. rain showers likely and a chance of thunderstorms. waves
1 to 2 feet. 
.sunday...northwest winds 10 to 15 knots. mostly cloudy. waves 1 to
3 feet. 
.monday...north winds around 10 knots backing northwest early in the
afternoon. mostly sunny. waves 1 to 2 feet. 
.tuesday...southwest winds 5 to 10 knots. mostly sunny. waves 1 foot
or less. 

$$
fzus53 kgrr 132144
nshgrr
expires:202608140800;;139096

nearshore marine forecast
national weather service grand rapids mi
544 pm edt thu aug 13 2026

for waters within five nautical miles of shore on lake michigan


lmz847-140800-
grand haven to whitehall mi-
544 pm edt thu aug 13 2026

.through early evening...west winds 5 to 10 knots. cloudy. waves
less than 1 foot. 
.tonight...northwest winds 5 to 15 knots veering northeast in the
late evening and overnight. mostly cloudy. waves less than 1 foot. 
.friday...east winds 10 to 15 knots backing northwest early in the
afternoon. partly sunny. waves around 1 foot. 
.friday night...north winds around 10 knots veering east 10 to
20 knots in the late evening and overnight. partly cloudy with a
chance of rain showers and a slight chance of thunderstorms. waves
1 to 2 feet. 
.saturday...southeast winds 15 to 20 knots. rain showers likely and
a slight chance of thunderstorms. waves 1 to 2 feet. 
.saturday night...southeast winds 15 to 20 knots veering west after
midnight. rain showers likely. waves 2 to 4 feet. 
.sunday...northwest winds around 15 knots. mostly cloudy. waves 2 to
4 feet. 
.monday...north winds 10 to 15 knots backing northwest 15 to
20 knots early in the afternoon. mostly sunny. waves 1 to 3 feet. 
.tuesday...southwest winds 10 to 15 knots. mostly sunny. waves
around 1 foot. 

$$
fzus53 kgrr 132144
nshgrr
expires:202608140800;;139095

nearshore marine forecast
national weather service grand rapids mi
544 pm edt thu aug 13 2026

for waters within five nautical miles of shore on lake michigan


lmz848-140800-
whitehall to pentwater mi-
544 pm edt thu aug 13 2026

.through early evening...northwest winds 5 to 10 knots. cloudy.
waves less than 1 foot. 
.tonight...northwest winds 5 to 10 knots veering northeast in the
late evening and overnight. mostly cloudy in the evening then
becoming partly cloudy. waves 1 foot or less. 
.friday...northeast winds 10 to 20 knots backing north early in the
afternoon. mostly sunny. waves 2 to 4 feet. 
.friday night...north winds 10 to 20 knots veering east in the late
evening and overnight. partly cloudy with a chance of rain showers
and a slight chance of thunderstorms. waves 2 to 4 feet. 
.saturday...southeast winds 15 to 20 knots. mostly cloudy with a
chance of rain showers and a slight chance of thunderstorms. waves
1 to 3 feet. 
.saturday night...southeast winds 10 to 20 knots veering southwest
after midnight. rain showers likely. waves 2 to 4 feet. 
.sunday...northwest winds around 15 knots. mostly cloudy. waves 2 to
4 feet. 
.monday...north winds 10 to 15 knots backing northwest 15 to
20 knots early in the afternoon. sunny. waves 1 to 3 feet. 
.tuesday...southwest winds 5 to 15 knots increasing to 15 to
20 knots early in the afternoon. mostly sunny. waves 1 to 2 feet. 

$$
fzus53 kgrr 132144
nshgrr
expires:202608140800;;139094

nearshore marine forecast
national weather service grand rapids mi
544 pm edt thu aug 13 2026

for waters within five nautical miles of shore on lake michigan


lmz849-140800-
pentwater to manistee mi-
544 pm edt thu aug 13 2026

.through early evening...northwest winds 5 to 10 knots. cloudy.
waves less than 1 foot. 
.tonight...north winds around 5 knots veering northeast in the late
evening and overnight. partly cloudy. waves less than 1 foot. 
.friday...northeast winds 10 to 20 knots backing north early in the
afternoon. mostly sunny. waves 2 to 4 feet. 
.friday night...north winds 10 to 20 knots veering southeast after
midnight. partly cloudy with a slight chance of rain showers. waves
2 to 4 feet. 
.saturday...southeast winds 10 to 20 knots. rain showers likely.
waves 1 to 3 feet. 
.saturday night...southeast winds 10 to 15 knots veering southwest
after midnight. rain showers likely. waves 1 to 3 feet. 
.sunday...northwest winds 10 to 15 knots. mostly cloudy. waves 2 to
4 feet. 
.monday...north winds 10 to 15 knots. sunny. waves 1 to 2 feet. 
.tuesday...southwest winds 5 to 15 knots increasing to 15 to
20 knots early in the afternoon. mostly sunny. waves 1 to 2 feet. 

$$
fzus53 kiwx 131946
nshiwx
expires:202608140215;;133905

nearshore marine forecast
national weather service northern indiana
346 pm edt thu aug 13 2026

for waters within five nautical miles of shore on lake michigan


lmz043-046-140215-
new buffalo mi to st joseph mi-michigan city in to new buffalo mi-
346 pm edt thu aug 13 2026

.tonight...northeast winds 5 to 10 knots becoming east. a chance
of showers with a slight chance of thunderstorms this evening,
then showers likely with a slight chance of thunderstorms after
midnight. waves 1 foot or less. 
.friday...east winds 5 to 10 knots becoming northeast. a chance
of showers with a slight chance of thunderstorms in the morning,
then a chance of showers in the afternoon. waves 1 foot or less. 
.friday night...northeast winds 5 to 10 knots becoming southeast.
a chance of showers with a slight chance of thunderstorms. waves
1 foot or less. 
.saturday...southeast winds around 10 knots becoming south.
showers likely with a chance of thunderstorms. waves 1 foot or
less. 

winds and waves higher in and near thunderstorms.

the water temperature at st. joseph is 74 degrees and at michigan
city is 66 degrees.

$$
fzus53 klot 131949
nshlot
expires:202608140315;;133946

nearshore marine forecast
national weather service chicago/romeoville il
249 pm cdt thu aug 13 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>745-140315-
calumet harbor il to gary in-gary to burns harbor in-
burns harbor to michigan city in-
249 pm cdt thu aug 13 2026

.late this afternoon...northeast winds 5 to 10 kt. showers likely
and slight chance of thunderstorms. waves around 1 ft. 
.tonight...northeast winds 10 to 15 kt becoming east overnight. 
showers likely and a chance of thunderstorms. waves 1 to 2 ft. 
.friday...east winds 10 to 15 kt becoming northeast late. showers
likely and a chance of thunderstorms in the morning. waves 1 to
2 ft. 
.friday night...northeast winds 10 to 15 kt becoming southeast
overnight. slight chance of showers and thunderstorms in the
evening. waves 1 to 2 ft. 
.saturday...southeast winds 10 to 15 kt becoming south. showers
likely and a chance of thunderstorms in the morning, then chance
of showers and thunderstorms in the afternoon. waves 1 to 2 ft.  

$$
fzus53 klot 131949
nshlot
expires:202608140315;;133945

nearshore marine forecast
national weather service chicago/romeoville il
249 pm cdt thu aug 13 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>742-140315-
winthrop harbor to wilmette harbor il-
wilmette harbor to northerly island il-
northerly island to calumet harbor il-
249 pm cdt thu aug 13 2026

.late this afternoon...east winds 5 to 10 kt. showers and slight 
chance of thunderstorms. waves around 1 ft. 
.tonight...east winds 10 to 15 kt. showers likely and a chance of
thunderstorms. waves 1 to 2 ft. 
.friday...east winds 10 to 15 kt becoming northeast late. chance
of showers in the morning. waves 1 to 3 ft. 
.friday night...northeast winds 10 to 15 kt becoming east
overnight. chance of showers and thunderstorms. waves 1 to 3 ft
building to 2 to 4 ft. 
.saturday...southeast winds 10 to 20 kt diminishing to around
15 kt. showers and a chance of thunderstorms. waves 2 to 4 ft.  

$$
fzus53 kmkx 132210
nshmkx
expires:202608140400;;140458

nearshore marine forecast
national weather service milwaukee/sullivan wi
510 pm cdt thu aug 13 2026

for waters within five nautical miles of shore on lake michigan


lmz644-140400-
port washington to north point light wi-
510 pm cdt thu aug 13 2026

.tonight...east wind 5 to 10 knots backing northeast late in the
evening, then becoming northeast 5 to 10 knots after midnight
rising to 10 to 15 knots early in the morning. chance of rain in
the evening. waves around 1 foot. 
.friday...northeast wind 10 to 15 knots becoming northeast 10 to
15 knots with gusts to around 20 knots late in the afternoon.
mostly cloudy. waves 1 to 2 feet building to 2 to 4 feet in the
late morning and early afternoon, then subsiding to 1 to 3 feet
late in the afternoon. 
.friday night...northeast wind 10 to 15 knots with gusts to
around 20 knots veering southeast early in the morning. slight
chance of showers through around midnight, then chance of showers
and slight chance of thunderstorms after midnight. waves 3 to
4 feet. 
.saturday...southeast wind 15 to 20 knots becoming 10 to 20 knots
late in the afternoon. gusts up to 25 knots. showers and slight
chance of thunderstorms in the morning, then showers likely and a
chance of thunderstorms in the afternoon. waves 4 to 6 feet
subsiding to 3 to 5 feet late in the afternoon. 

$$
fzus53 kmkx 132210
nshmkx
expires:202608140400;;140460

nearshore marine forecast
national weather service milwaukee/sullivan wi
510 pm cdt thu aug 13 2026

for waters within five nautical miles of shore on lake michigan


lmz646-140400-
wind point wi to winthrop harbor il-
510 pm cdt thu aug 13 2026

.tonight...east wind 5 to 10 knots becoming northeast 10 to
15 knots in the late evening and early morning, then veering east
early in the morning. chance of rain in the evening, then slight
chance of rain in the late evening and overnight. waves 1 to
2 feet. 
.friday...east wind 10 to 15 knots backing northeast late in the
afternoon. slight chance of rain in the morning. waves 1 to
3 feet building to 2 to 4 feet in the late morning and early
afternoon, then subsiding to 1 to 3 feet late in the afternoon. 
.friday night...northeast wind 10 to 15 knots veering southeast
early in the morning. chance of showers and slight chance of
thunderstorms through around midnight, then showers likely and a
chance of thunderstorms after midnight. waves 1 to 3 feet
building to 2 to 4 feet in the late evening and overnight. 
.saturday...southeast wind 15 to 20 knots easing to 10 to
15 knots late in the afternoon. showers and a chance of
thunderstorms. waves 3 to 4 feet. 

$$
fzus53 kmkx 132210
nshmkx
expires:202608140400;;140457

nearshore marine forecast
national weather service milwaukee/sullivan wi
510 pm cdt thu aug 13 2026

for waters within five nautical miles of shore on lake michigan


lmz643-140400-
sheboygan to port washington wi-
510 pm cdt thu aug 13 2026

.tonight...east wind 5 to 10 knots backing northeast late in the
evening, then becoming northeast 5 to 10 knots after midnight
rising to 10 to 15 knots early in the morning. slight chance of
rain in the evening. waves around 1 foot. 
.friday...northeast wind 10 to 15 knots becoming northeast 10 to
15 knots with gusts to around 20 knots early in the afternoon,
then rising to 15 to 20 knots late in the afternoon. partly
sunny. waves 1 to 2 feet building to 2 to 4 feet in the late
morning and afternoon. 
.friday night...northeast wind 15 to 20 knots easing to 10 to
15 knots late in the evening, then veering east after midnight
veering southeast 10 to 20 knots early in the morning. chance of
showers and slight chance of thunderstorms after midnight. waves
3 to 4 feet. 
.saturday...southeast wind 15 to 20 knots becoming 15 to 25 knots
in the late morning and early afternoon, then becoming 15 to
20 knots late in the afternoon. showers and slight chance of
thunderstorms. waves 4 to 6 feet building to 5 to 7 feet in the
late morning and early afternoon, then subsiding to 4 to 6 feet
late in the afternoon. a small craft advisory may be needed. 

$$
fzus53 kmkx 132210
nshmkx
expires:202608140400;;140459

nearshore marine forecast
national weather service milwaukee/sullivan wi
510 pm cdt thu aug 13 2026

for waters within five nautical miles of shore on lake michigan


lmz645-140400-
north point light to wind point wi-
510 pm cdt thu aug 13 2026

.tonight...east wind 5 to 10 knots backing northeast in the late
evening and early morning, then becoming east 10 to 15 knots
early in the morning. chance of rain in the evening, then slight
chance of rain in the late evening and early morning. waves
around 1 foot. 
.friday...east wind 10 to 15 knots backing northeast late in the
afternoon. slight chance of rain in the morning. waves 1 to
3 feet building to 2 to 4 feet in the late morning and early
afternoon, then subsiding to 1 to 3 feet late in the afternoon. 
.friday night...northeast wind 10 to 15 knots veering southeast
early in the morning. chance of showers and slight chance of
thunderstorms through around midnight, then showers likely and a
chance of thunderstorms after midnight. waves 3 to 4 feet. 
.saturday...southeast wind 15 to 20 knots easing to 10 to
15 knots late in the afternoon. showers in the morning. chance of
thunderstorms through the day. showers likely in the afternoon.
waves 3 to 4 feet. 

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