• 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 180733
nshapx
expires:202608181545;;925226

nearshore marine forecast
national weather service gaylord mi
333 am edt tue aug 18 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.


lmz346-181545-
manistee to point betsie mi-
333 am edt tue aug 18 2026

.today...west wind 10 to 15 knots becoming southwest in the
afternoon. slight chance of showers in the morning. chance of
showers and thunderstorms in the afternoon. waves 2 to 3 feet. 
.tonight...north wind 5 to 10 knots. chance of showers and
thunderstorms. waves 2 to 3 feet. 
.wednesday...light winds. sunny. waves 2 feet or less. 
.wednesday night...light winds. mostly clear. waves 2 feet or
less. 

winds and waves higher in the vicinity of thunderstorms.

see the open lakes forecast for days 3 through 5.

$$
fzus53 kgrb 180923
nshgrb
expires:202608181600;;929434

nearshore marine forecast
national weather service green bay wi
423 am cdt tue aug 18 2026

for waters within five nautical miles of shore on lake michigan


lmz541>543-181600-
rock island passage to sturgeon bay wi-
sturgeon bay to two rivers wi-two rivers to sheboygan wi-
423 am cdt tue aug 18 2026

.early this morning...w wind 5 to 10 kts. waves 2 ft or less. a
slight chance of showers. 
.today...sw wind 10 to 15 kts. waves 2 ft or less. a chance of
showers. a chance of thunderstorms in the afternoon. 
.tonight...n wind 5 to 10 kts. waves 2 ft or less. a chance of
showers and thunderstorms in the evening. 
.wednesday...nw wind 5 to 10 kts backing s early in the
afternoon. waves 2 ft or less. sunny.
.wednesday night...s wind 5 to 10 kts. waves 2 ft or less. mostly
clear.  

$$
fzus53 kiwx 180732
nshiwx
expires:202608181415;;925185

nearshore marine forecast
national weather service northern indiana
332 am edt tue aug 18 2026

for waters within five nautical miles of shore on lake michigan


lmz046-181415-
michigan city in to new buffalo mi-
332 am edt tue aug 18 2026

.today...southwest winds 5 to 10 knots. mostly sunny. waves
around 1 foot. 
.tonight...southwest winds 10 to 15 knots becoming northwest.
showers likely with a chance of thunderstorms. waves 1 to 2 feet.
.wednesday...north winds 5 to 10 knots. a slight chance of
showers in the morning. waves 1 to 2 feet. 
.wednesday night...north winds 10 knots or less becoming east.
partly cloudy. waves around 1 foot. 

winds and waves higher in and near thunderstorms.

the water temperature at st. joseph is 70 degrees and at michigan
city is 62 degrees.


$$
fzus53 kiwx 180732
nshiwx
expires:202608181415;;925186

nearshore marine forecast
national weather service northern indiana
332 am edt tue aug 18 2026

for waters within five nautical miles of shore on lake michigan


lmz043-181415-
new buffalo mi to st joseph mi-
332 am edt tue aug 18 2026

.today...southwest winds 5 to 10 knots. sunny this morning, then
becoming partly sunny. waves 1 to 2 feet. 
.tonight...southwest winds 10 to 15 knots becoming northwest.
showers likely with a chance of thunderstorms. waves 1 to 2 feet.
.wednesday...north winds 5 to 10 knots. a slight chance of
showers in the morning. waves 1 to 2 feet. 
.wednesday night...north winds 5 to 10 knots becoming light and
variable. partly cloudy. waves around 1 foot. 

winds and waves higher in and near thunderstorms.

the water temperature at st. joseph is 70 degrees and at michigan
city is 62 degrees.


$$
fzus53 klot 180906
nshlot
expires:202608181515;;928695

nearshore marine forecast
national weather service chicago/romeoville il
406 am cdt tue aug 18 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>745-181515-
calumet harbor il to gary in-gary to burns harbor in-
burns harbor to michigan city in-
406 am cdt tue aug 18 2026

.today...southwest winds 10 to 15 kt increasing to 15 to 20 kt.
chance of showers and slight chance of thunderstorms in the
afternoon. waves 1 to 2 ft. 
.tonight...southwest winds 10 to 15 kt becoming west overnight.
showers likely and a chance of thunderstorms. waves 1 to 2 ft.
.wednesday...north winds around 10 kt. mostly cloudy in the
morning, then becoming partly cloudy. waves 1 to 2 ft. 
.wednesday night...northeast winds around 10 kt becoming east.
mostly clear in the evening, then becoming partly cloudy. waves
1 to 2 ft.  

$$
fzus53 klot 180906
nshlot
expires:202608181515;;928694

nearshore marine forecast
national weather service chicago/romeoville il
406 am cdt tue aug 18 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>742-181515-
winthrop harbor to wilmette harbor il-
wilmette harbor to northerly island il-
northerly island to calumet harbor il-
406 am cdt tue aug 18 2026

.today...southwest winds 10 to 15 kt increasing to 15 to 20 kt.
chance of showers in the morning. chance of showers and 
thunderstorms in the afternoon. waves 1 to 2 ft. 
.tonight...southwest winds 10 to 15 kt becoming west overnight.
showers likely and a chance of thunderstorms. waves 1 to 2 ft.
.wednesday...north winds around 10 kt becoming northeast in the
afternoon. partly cloudy in the morning then clearing. waves 1 to
2 ft. 
.wednesday night...east winds around 10 kt becoming around 5 kt.
mostly clear in the evening, then becoming partly cloudy. waves
1 to 2 ft.

$$
fzus53 kmkx 180810
nshmkx
expires:202608182100;;927025

nearshore marine forecast
national weather service milwaukee/sullivan wi
310 am cdt tue aug 18 2026

for waters within five nautical miles of shore on lake michigan


lmz646-182100-
wind point wi to winthrop harbor il-
310 am cdt tue aug 18 2026

.early this morning...southwest wind 10 to 15 knots veering west
early in the morning. mostly clear. waves around 1 foot. 
.today...west wind 10 to 15 knots backing southwest with gusts to
around 20 knots in the late morning and afternoon. slight chance
of showers and thunderstorms early in the afternoon. chance of
showers and thunderstorms late in the afternoon. waves around
1 foot. 
.tonight...southwest wind 10 to 15 knots veering west late in the
evening, then veering northwest after midnight easing to 5 to
10 knots early in the morning. chance of showers and
thunderstorms through around midnight, then slight chance of
showers and thunderstorms after midnight. waves around 1 foot. 
.wednesday...north wind 5 to 10 knots veering northeast late in
the afternoon. sunny. waves around 1 foot. 
.wednesday night...east wind 5 to 10 knots veering southeast late
in the evening, then veering south after midnight veering west
early in the morning. partly cloudy. waves around 1 foot. 

$$
fzus53 kmkx 180810
nshmkx
expires:202608182100;;927023

nearshore marine forecast
national weather service milwaukee/sullivan wi
310 am cdt tue aug 18 2026

for waters within five nautical miles of shore on lake michigan


lmz644-182100-
port washington to north point light wi-
310 am cdt tue aug 18 2026

.early this morning...west wind 10 to 15 knots. partly cloudy.
waves around 1 foot. 
.today...southwest wind 10 to 15 knots becoming southwest 10 to
15 knots with gusts to around 20 knots in the late morning and
afternoon. chance of showers and slight chance of thunderstorms
in the afternoon. waves around 1 foot. 
.tonight...southwest wind 10 to 15 knots veering west late in the
evening, then veering northwest after midnight becoming north
5 to 10 knots early in the morning. chance of showers and
thunderstorms through around midnight. waves around 1 foot. 
.wednesday...north wind 5 to 10 knots veering east late in the
afternoon. sunny. waves around 1 foot. 
.wednesday night...southeast wind 5 to 10 knots veering west
early in the morning. mostly clear. waves around 1 foot. 

$$
fzus53 kmkx 180810
nshmkx
expires:202608182100;;927022

nearshore marine forecast
national weather service milwaukee/sullivan wi
310 am cdt tue aug 18 2026

for waters within five nautical miles of shore on lake michigan


lmz643-182100-
sheboygan to port washington wi-
310 am cdt tue aug 18 2026

.early this morning...southwest wind 10 to 15 knots veering west
early in the morning. partly cloudy. waves around 1 foot. 
.today...west wind 10 to 15 knots backing southwest with gusts to
around 20 knots in the late morning and afternoon. slight chance
of thunderstorms early in the afternoon. chance of showers in the
afternoon. chance of thunderstorms late in the afternoon. waves
1 to 2 feet. 
.tonight...southwest wind 10 to 15 knots veering north early in
the morning. chance of showers and slight chance of thunderstorms
through around midnight. waves 1 to 2 feet. 
.wednesday...northwest wind 5 to 10 knots veering southeast late
in the afternoon. sunny. waves around 1 foot. 
.wednesday night...south wind 5 to 10 knots veering west early in
the morning. mostly clear. waves around 1 foot. 

$$
fzus53 kmkx 180810
nshmkx
expires:202608182100;;927024

nearshore marine forecast
national weather service milwaukee/sullivan wi
310 am cdt tue aug 18 2026

for waters within five nautical miles of shore on lake michigan


lmz645-182100-
north point light to wind point wi-
310 am cdt tue aug 18 2026

.early this morning...southwest wind 10 to 15 knots veering west
early in the morning. partly cloudy. waves around 1 foot. 
.today...southwest wind 10 to 15 knots becoming southwest 10 to
15 knots with gusts to around 20 knots in the late morning and
afternoon. slight chance of thunderstorms early in the afternoon.
chance of showers in the afternoon. chance of thunderstorms late
in the afternoon. waves around 1 foot. 
.tonight...southwest wind 10 to 15 knots veering north early in
the morning. chance of showers and thunderstorms through around
midnight, then slight chance of showers and thunderstorms after
midnight. waves around 1 foot. 
.wednesday...north wind 10 to 15 knots easing to 5 to 10 knots
late in the morning, then veering northeast early in the
afternoon veering east late in the afternoon. sunny. waves 1 to
2 feet. 
.wednesday night...southeast wind 5 to 10 knots veering west
early in the morning. mostly clear. waves around 1 foot. 

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