• 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 ·
MI - south

Real-Time Data
 > Dynamic Map
 > Wind Obs Summary

Computer Forecasts
 > Model Tables

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

fzus61 kcle 130156
glfle 
expires:202609130815;;355627

open lake forecast for lake erie
national weather service cleveland oh
956 pm edt sat sep 12 2026

for waters beyond five nautical miles of shore on lake erie

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...
low pressure of 29.80 inches extends across lower michigan and
will move south across lake erie on sunday. a secondary stronger 
cold front will arrive late sunday ahead of high pressure of 30.30
inches that will build in for monday. pressure falls to 30.20 
inches tuesday night as a warm front sets up over lake erie for 
midweek.


lez164>168-130815-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
956 pm edt sat sep 12 2026

.overnight...southwest winds 10 to 15 knots. isolated
showers and thunderstorms late. waves 1 to 3 feet building to
2 to 4 feet. 
.sunday...west winds 5 to 15 knots. isolated showers and
thunderstorms early. a slight chance of showers and thunderstorms
in the afternoon. waves 1 to 3 feet. 
.sunday night...northwest winds 15 to 25 knots becoming north.
waves 1 to 3 feet building to 3 to 6 feet. 
.monday...north winds 15 to 20 knots becoming northeast 5 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.monday night...east winds 10 knots or less becoming southeast
and increasing to 15 to 20 knots overnight. waves 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming southwest 10 to
15 knots. showers likely with a chance of thunderstorms tuesday
night. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.wednesday...west winds 5 to 10 knots becoming southeast. a
chance of showers. waves 2 feet or less. 
.thursday...southwest winds 10 to 15 knots becoming northeast
15 to 20 knots. showers likely during the day, then a chance of
showers thursday night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$
fzus61 kcle 130156
glfle 
expires:202609130815;;355626

open lake forecast for lake erie
national weather service cleveland oh
956 pm edt sat sep 12 2026

for waters beyond five nautical miles of shore on lake erie

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...
low pressure of 29.80 inches extends across lower michigan and
will move south across lake erie on sunday. a secondary stronger 
cold front will arrive late sunday ahead of high pressure of 30.30
inches that will build in for monday. pressure falls to 30.20 
inches tuesday night as a warm front sets up over lake erie for 
midweek.


lez162-163-130815-
detroit river lt. to maumee bay oh to reno beach oh beyond 5nm
offshoreline to us-canadian border-
reno beach to the islands oh beyond 5nm off shoreline to us-
canadian border-
956 pm edt sat sep 12 2026

.overnight...southwest winds around 10 knots becoming west.
waves 1 to 2 feet. 
.sunday...west winds 5 to 15 knots becoming northwest. waves
2 feet or less. 
.sunday night...northwest winds 15 to 20 knots becoming north.
waves 1 to 3 feet building to 2 to 4 feet. 
.monday...north winds 5 to 15 knots becoming east less than
10 knots. waves 2 to 4 feet subsiding to 1 foot or less. 
.monday night...southeast winds 5 to 15 knots becoming south
15 to 20 knots. waves 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming west 10 to
15 knots. showers likely with a chance of thunderstorms tuesday
night. waves 1 to 3 feet subsiding to 1 foot or less. 
.wednesday...north winds 5 to 10 knots becoming east. a chance of
showers during the day, then showers likely wednesday night.
waves 1 foot or less. 
.thursday...southwest winds 10 to 15 knots becoming northeast
15 to 20 knots. showers likely during the day, then a chance of
showers thursday night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$
fzus63 kdtx 130141
glflh 
expires:202609130945;;355456

open lake forecast for lake huron
national weather service detroit/pontiac mi
941 pm edt sat sep 12 2026

for waters beyond five nautical miles off shore on lake huron

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...low pressure, 29.30 inches, will continue to push
eastward over northern ontario as it drags a cold front across
the central great lakes through sunday. northwesterly flow
increases on sunday behind the front.


lhz462>464-130945-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
941 pm edt sat sep 12 2026

.rest of tonight...southwest winds 5 to 10 knots. waves 1 to
3 feet. 
.sunday...north winds 5 to 10 knots backing to the northwest
early in the afternoon...then becoming west 10 to 15 knots late
in the afternoon. a chance of showers in the afternoon. waves
1 to 3 feet. 
.sunday night...northwest winds 15 to 20 knots. waves 5 to
7 feet. waves occasionally around 10 feet. 
.monday...northwest winds 10 to 15 knots becoming light and
variable. waves 3 to 5 feet subsiding to 1 to 3 feet early in the
afternoon. 
.monday night...light and variable winds becoming southeast 10 to
15 knots by midnight...then becoming south 15 to 20 knots with
gusts to around 30 knots after midnight. waves 1 to 3 feet
building to 4 to 6 feet after midnight. waves occasionally around
8 feet. 
.tuesday...south winds 20 to 25 knots with gusts to 35 knot gales
becoming southwest 10 to 15 knots late in the afternoon. showers
likely...then a chance of showers late in the afternoon. waves
5 to 7 feet subsiding to 1 to 3 feet late in the evening. waves
occasionally around 10 feet. 
.wednesday...north winds 5 to 10 knots veering to the northeast
by midnight. a chance of showers early in the evening. rain
showers likely by midnight. waves 2 feet or less. 
.thursday...east winds 5 to 10 knots becoming north 10 to
15 knots. showers likely until afternoon. waves 1 to 3 feet. 


$$
fzus63 kdtx 130140
glfsc 
expires:202609130945;;355454

lake st clair forecast
national weather service detroit/pontiac mi
940 pm edt sat sep 12 2026

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...low pressure, 29.30 inches, will continue to push
eastward over northern ontario as it drags a cold front across
the central great lakes through sunday. northwesterly flow
increases on sunday behind the front.


lcz460-130945-
lake st clair-
940 pm edt sat sep 12 2026

.rest of tonight...southwest winds 5 to 10 knots veering to the west
early in the morning. partly cloudy. waves 2 feet or less.
.sunday...north winds 5 to 10 knots becoming northwest 15 to 20
knots late in the afternoon. mostly sunny. waves 2 feet or less.
.sunday night...northwest winds 20 to 25 knots becoming north 15 to
20 knots after midnight. mostly cloudy early in the evening then
clearing. waves 1 to 3 feet.
.monday...north winds 10 to 15 knots diminishing to 5 to 10 knots in
the late morning and early afternoon...then becoming light and
variable early in the afternoon. sunny. waves 2 feet or less.
.monday night...southeast winds 5 to 10 knots becoming south 15 to
20 knots. partly cloudy. waves 2 feet or less.
.tuesday...south winds 20 to 25 knots becoming southwest 10 to 15
knots. partly cloudy. a chance of light showers. showers likely in
the evening. waves 1 to 3 feet.
.wednesday...northeast winds 5 to 10 knots. mostly cloudy. showers
likely. waves 2 feet or less.
.thursday...north winds 10 to 15 knots. mostly cloudy. showers
likely. waves 2 feet or less.

$$
fzus63 kmkx 130242
glflm 
expires:202609130915;;357216

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
942 pm cdt sat sep 12 2026

for waters beyond 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 wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

light to moderate northwest winds will prevail tonight and sunday
with occasional gusts to 25 knots over the lake sunday afternoon.
winds ease sunday night as high pressure around 30.3 inches moves
across the lake into monday morning. 

winds will then increase and veer to south-southwesterly monday 
afternoon into tuesday as low pressure around 29.4 inches 
develops over manitoba. gales appear likely monday night into the
first half of tuesday. a gale watch has been issued for the
northern two thirds of the open waters of lake michigan. 

periods of showers and thunderstorms will accompany the 
developing low from as early as monday evening into tuesday. winds
will trend northerly and weaken behind a cold front tuesday night
into wednesday.


lmz261-362-364-366-563-565-567-868-130915-
lake michigan from seul choix point to rock island passage 5 nm
offshore to mid lake-
lake michigan south of a line from seul choix point to the
mackinac bridge and north of a line from charlevoix mi to south
fox island 5 nm offshore-
lake michigan from charlevoix to point betsie mi 5 nm offshore to
mid lake-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
lake michigan from rock island passage to sturgeon bay wi-
lake michigan from sturgeon bay to two rivers wi 5 nm offshore to
mid lake-
lake michigan from two rivers to sheboygan wi 5 nm offshore to
mid lake-
lake michigan from pentwater to manistee mi 5 nm offshore to mid
lake-
942 pm cdt sat sep 12 2026

sheboygan wi to pentwater mi north...

...gale watch in effect from monday evening through tuesday
afternoon...

.rest of tonight...northwest winds 15 to 25 kt diminishing to
10 to 20 kt. waves 2 to 4 ft. 
.sunday...northwest winds 10 to 20 kt increasing to 30 kt. waves
2 to 4 ft building to 3 to 5 ft. 
.sunday night...northwest winds to 30 kt becoming north 10 to
15 kt. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.monday...northeast winds 10 to 15 kt veering to south 15 to
25 kt in the afternoon. waves 1 to 3 ft building to 3 to 5 ft. 
.monday night...south gales to 40 kt. chance of showers in the
evening, then showers overnight. waves 7 to 10 ft occasionally to
13 ft building to 10 to 14 ft occasionally to 18 ft. 
.tuesday...southwest gales to 40 kt diminishing to 30 kt in the
afternoon. showers in the morning, then chance of showers in the
afternoon. waves 10 to 14 ft occasionally to 18 ft subsiding to
7 to 10 ft occasionally to 13 ft. 
.tuesday night...northwest winds 15 to 25 kt becoming north 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 1 to
3 ft. 
.wednesday...northeast winds 10 to 20 kt diminishing to 10 to
15 kt. waves 1 to 3 ft. 
.thursday...northeast winds 10 to 20 kt becoming north 15 to
25 kt. chance of showers. waves 1 to 3 ft.  

$$
fzus63 kmkx 130242
glflm 
expires:202609130915;;357217

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
942 pm cdt sat sep 12 2026

for waters beyond 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 wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

light to moderate northwest winds will prevail tonight and sunday
with occasional gusts to 25 knots over the lake sunday afternoon.
winds ease sunday night as high pressure around 30.3 inches moves
across the lake into monday morning. 

winds will then increase and veer to south-southwesterly monday 
afternoon into tuesday as low pressure around 29.4 inches 
develops over manitoba. gales appear likely monday night into the
first half of tuesday. a gale watch has been issued for the
northern two thirds of the open waters of lake michigan. 

periods of showers and thunderstorms will accompany the 
developing low from as early as monday evening into tuesday. winds
will trend northerly and weaken behind a cold front tuesday night
into wednesday.


lmz669-671-673-675-870-872-874-876-130915-
lake michigan from sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from port washington to north point light wi 5 nm
offshore to mid lake-
lake michigan from north point light to wind point wi 5 nm
offshore to mid lake-
lake michigan from wind point wi to winthrop harbor il 5 nm
offshore to mid lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
lake michigan from grand haven to whitehall mi 5 nm offshore to
mid lake-
lake michigan from holland to grand haven mi 5 nm offshore to mid
lake-
lake michigan from south haven to holland mi 5 nm offshore to mid
lake-
942 pm cdt sat sep 12 2026

sheboygan wi to pentwater mi south to winthrop harbor il to south
haven mi...

...gale watch in effect from monday evening through tuesday
afternoon...

.rest of tonight...northwest winds 15 to 25 kt becoming north
10 to 20 kt. waves 2 to 4 ft. 
.sunday...north winds 10 to 20 kt becoming northwest 15 to 25 kt.
slight chance of showers in the afternoon. waves 3 to 5 ft
building to 4 to 6 ft occasionally to 8 ft. 
.sunday night...northwest winds 10 to 20 kt veering to northeast
10 to 15 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to
3 to 5 ft. 
.monday...east winds 10 to 20 kt becoming southeast 15 to 25 kt.
waves 1 to 3 ft building to 3 to 5 ft. 
.monday night...southeast gales to 40 kt becoming south. showers
likely overnight. waves 7 to 10 ft occasionally to 13 ft building
to 10 to 14 ft occasionally to 18 ft. 
.tuesday...southwest gales to 35 kt diminishing to 30 kt. showers
likely. waves 10 to 14 ft occasionally to 18 ft subsiding to 6 to
9 ft occasionally to 12 ft. 
.tuesday night...northwest winds 10 to 15 kt becoming north 10 to
20 kt. chance of showers. waves 3 to 5 ft subsiding to 2 to 4 ft.
.wednesday...northeast winds 10 to 20 kt diminishing to 10 to
15 kt. chance of showers. waves 2 to 4 ft. 
.thursday...northeast winds 10 to 20 kt increasing to 15 to
25 kt. waves 3 to 5 ft.  

$$
fzus63 kmkx 130242
glflm 
expires:202609130915;;357218

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
942 pm cdt sat sep 12 2026

for waters beyond 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 wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

light to moderate northwest winds will prevail tonight and sunday
with occasional gusts to 25 knots over the lake sunday afternoon.
winds ease sunday night as high pressure around 30.3 inches moves
across the lake into monday morning. 

winds will then increase and veer to south-southwesterly monday 
afternoon into tuesday as low pressure around 29.4 inches 
develops over manitoba. gales appear likely monday night into the
first half of tuesday. a gale watch has been issued for the
northern two thirds of the open waters of lake michigan. 

periods of showers and thunderstorms will accompany the 
developing low from as early as monday evening into tuesday. winds
will trend northerly and weaken behind a cold front tuesday night
into wednesday.


lmz080-777-779-878-130915-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from winthrop harbor to wilmette harbor il 5 nm
offshore to mid lake-
lake michigan from wilmette harbor il to michigan city in 5 nm
offshore to mid lake-
lake michigan from st. joseph to south haven mi 5 nm offshore to
mid lake-
942 pm cdt sat sep 12 2026

winthrop harbor il to south haven mi south...

.rest of tonight...northwest winds 10 to 15 kt becoming north
10 to 20 kt. waves 1 to 2 ft building to 2 to 4 ft. 
.sunday...north winds 10 to 15 kt increasing to 15 to 25 kt, then
diminishing to 10 to 20 kt late. slight chance of showers in the
afternoon. waves 3 to 5 ft building to 4 to 6 ft occasionally to
8 ft. 
.sunday night...northwest winds 10 to 20 kt becoming north 10 to
15 kt, then becoming northeast 5 to 10 kt late. waves 3 to 5 ft
subsiding to 2 to 4 ft. 
.monday...east winds 10 to 20 kt becoming southeast. waves 1 to
3 ft. 
.monday night...southeast winds to 30 kt becoming south. waves
6 to 9 ft occasionally to 12 ft. 
.tuesday...south winds to 30 kt becoming southwest 10 to 20 kt in
the afternoon. chance of showers in the morning, then showers
likely with a chance of thunderstorms in the afternoon. waves
6 to 9 ft occasionally to 12 ft subsiding to 4 to 6 ft
occasionally to 8 ft. 
.tuesday night...northwest winds 5 to 10 kt becoming north 10 to
15 kt. showers likely with a chance of thunderstorms. waves 1 to
3 ft. 
.wednesday...northeast winds 10 to 15 kt. showers likely. waves
2 to 4 ft. 
.thursday...north winds 10 to 20 kt. showers likely. waves 3 to
5 ft.  

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