• 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 ·
ON- Simcoe & Huron

Human Forecasts
 > Daily Briefing
 > Forecast Blog

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 kbuf 180210
glflo 
expires:202604180900;;554658

open lake forecast for lake ontario
national weather service buffalo ny
1009 pm edt fri apr 17 2026

for waters beyond five nautical miles of shore on lake ontario

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...a 30.0 inch high over the lake this evening will slide 
east into new england tonight. meanwhile, a 29.4 inch low near lake 
superior this evening will move to james bay and deepen to 29.0 
inches saturday, while pushing a trailing strong cold front across 
the lake later saturday and saturday evening. a 30.4 inch high will 
then settle southeastward across the great lakes sunday through 
monday night, before sliding off the mid-atlantic coast tuesday. a 
29.4 inch low over lower hudson bay tuesday, will weaken to 29.9 
inches by wednesday, while pushing an attendant weak cold front 
across the lake tuesday night. a 30.2 inch high will then build 
across the great lakes region wednesday and thursday.


loz062-180900-
lake ontario open waters from the niagara river to hamlin beach-
1009 pm edt fri apr 17 2026

.overnight...east winds 5 to 15 knots. patchy fog. waves
2 feet or less. 
.saturday...southeast winds 10 to 15 knots becoming southwest
15 to 20 knots. patchy fog early. a chance of showers late in the
morning. showers in the afternoon. waves 1 to 3 feet. 
.saturday night...west winds 15 to 20 knots diminishing to 10 to
15 knots. rain showers likely. waves 2 to 4 feet. 
.sunday...west winds 10 to 15 knots increasing to 15 to 20 knots.
a chance of rain showers. waves 2 to 4 feet building to 3 to
5 feet. 
.sunday night...west winds 15 to 20 knots becoming northwest. a
chance of rain showers in the evening. waves 3 to 5 feet. 
.monday...northwest winds 15 to 20 knots becoming southwest 5 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tuesday...south winds 10 to 15 knots becoming northwest. a
chance of rain showers. waves 1 to 3 feet. 
.wednesday...north winds 5 to 15 knots becoming northeast. waves
2 feet or less. 

$$
fzus63 kdtx 180154
glflh 
expires:202604181000;;553705

open lake forecast for lake huron
national weather service detroit/pontiac mi
954 pm edt fri apr 17 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...some areas of fog this evening into early tonight
mainly over the northern half of lake huron. low pressure, 29.30
inches, lifting into northern ontario drags a respectable cold
front through the central great lakes saturday supporting another
round of showers and storms. colder air filters into the region
the rest of the weekend maintaining moderate to strong
northwesterly winds.


lhz361>363-181000-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
954 pm edt fri apr 17 2026

.rest of tonight...southeast winds 15 to 20 knots increasing to
20 to 25 knots with gusts to around 30 knots after midnight.
areas of fog this evening. a chance of showers after midnight.
waves 6 to 9 feet. waves occasionally around 12 feet. 
.saturday...south winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots with gusts to around
30 knots late in the morning...then veering to the southwest
early in the afternoon veering to the west late in the afternoon.
showers likely in the morning. waves 8 to 12 feet. waves
occasionally around 15 feet. 
.saturday night...northwest winds 10 to 15 knots. waves 5 to
7 feet. waves occasionally around 10 feet. 
.sunday...west winds 10 to 15 knots becoming northwest 20 to
25 knots with gusts to around 30 knots. waves 5 to 7 feet
building to 6 to 9 feet early in the afternoon. waves
occasionally around 12 feet. 
.sunday night...northwest winds 20 to 25 knots with gusts to
around 30 knots decreasing to 15 to 20 knots after midnight.
waves 8 to 12 feet. waves occasionally around 15 feet. 
.monday...northwest winds 10 to 15 knots becoming west 5 to
10 knots late in the morning...then becoming southwest 10 to
15 knots late in the afternoon becoming south 15 to 20 knots with
gusts to around 30 knots late in the evening. waves 4 to 6 feet
subsiding to 1 to 3 feet late in the afternoon...then building to
6 to 9 feet late in the evening. waves occasionally around
12 feet. 
.tuesday...south winds 20 to 25 knots with gusts to around
30 knots becoming southwest 15 to 20 knots with gusts to around
30 knots in the late morning and early afternoon...then
decreasing to 10 to 15 knots early in the evening veering to the
northwest by midnight. waves 6 to 9 feet subsiding to 3 to 5 feet
by midnight. waves occasionally around 12 feet. 
.wednesday...north winds 10 to 15 knots becoming northeast 5 to
10 knots. waves 2 to 4 feet subsiding to 1 to 3 feet . 


$$
fzus63 kdtx 180154
glflh 
expires:202604181000;;553706

open lake forecast for lake huron
national weather service detroit/pontiac mi
954 pm edt fri apr 17 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...some areas of fog this evening into early tonight
mainly over the northern half of lake huron. low pressure, 29.30
inches, lifting into northern ontario drags a respectable cold
front through the central great lakes saturday supporting another
round of showers and storms. colder air filters into the region
the rest of the weekend maintaining moderate to strong
northwesterly winds.


lhz462>464-181000-
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-
954 pm edt fri apr 17 2026

.rest of tonight...southeast winds 15 to 20 knots increasing to
20 to 25 knots with gusts to around 30 knots early in the
morning. a chance of showers and thunderstorms after midnight.
waves 3 to 5 feet building to 5 to 7 feet early in the morning.
waves occasionally around 10 feet. 
.saturday...south winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots in the late morning and
early afternoon...then becoming west 10 to 15 knots late in the
afternoon. showers likely and a chance of thunderstorms in the
morning...then a chance of showers in the afternoon. waves 5 to
7 feet. waves occasionally around 10 feet. 
.saturday night...west winds 10 to 15 knots. waves 2 to 4 feet. 
.sunday...west winds 10 to 15 knots. a chance of snow showers in
the afternoon. waves 2 to 4 feet. 
.sunday night...north winds 15 to 20 knots. waves 6 to 9 feet.
waves occasionally around 12 feet. 
.monday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots late in the morning...then veering to the northeast late
in the afternoon becoming south 15 to 20 knots late in the
evening. waves 4 to 6 feet subsiding to 1 to 3 feet late in the
afternoon...then building to 4 to 6 feet late in the evening.
waves occasionally around 8 feet. 
.tuesday...south winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots in the late morning and
early afternoon...then becoming southwest 10 to 15 knots early in
the evening veering to the northwest by midnight. waves 6 to
9 feet subsiding to 3 to 5 feet . waves occasionally around
12 feet. 
.wednesday...north winds 10 to 15 knots decreasing to 5 to
10 knots. waves 2 to 4 feet subsiding to 1 to 3 feet . 


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