<![CDATA[wave forecast for Otisco Lake]]>Hi!
Could you please clarify whether the Icon model wave forecast for Lake Otisco is a real forecast for that lake or an interpolation of values ​​from the Great Lakes (Ontario Lake)? If interpolation, how do you assess the correctness of such a forecast?
Thank you!
9283bc0b-bb01-4ed8-a9ae-9e03a370cd96-image.png

]]>https://community.windy.com/topic/33542/wave-forecast-for-otisco-lakeRSS for NodeMon, 13 Jul 2026 10:22:00 GMTWed, 05 Jun 2024 06:28:35 GMT60<![CDATA[Reply to wave forecast for Otisco Lake on Wed, 05 Jun 2024 12:31:50 GMT]]>@Filip_K many thanks, Filip!

]]>https://community.windy.com/post/191893https://community.windy.com/post/191893Wed, 05 Jun 2024 12:31:50 GMT<![CDATA[Reply to wave forecast for Otisco Lake on Wed, 05 Jun 2024 12:26:55 GMT]]>@Mary_G yes, correct. Otisco lake is not covered by ICON global model forecast (which is not available as of now anyway). And even if it was, its size (~1.5x9km) is very small compared to model grid (~13km for ECMWF and ICON, ~22km for GFS) so the forecast isn't fine enough.

]]>https://community.windy.com/post/191892https://community.windy.com/post/191892Wed, 05 Jun 2024 12:26:55 GMT<![CDATA[Reply to wave forecast for Otisco Lake on Wed, 05 Jun 2024 11:54:52 GMT]]>@Filip_K Thanks, Filip! It turns out that on such a small lake as Otisco, I cannot rely on this forecast, did I understand correctly?

]]>https://community.windy.com/post/191888https://community.windy.com/post/191888Wed, 05 Jun 2024 11:54:52 GMT<![CDATA[Reply to wave forecast for Otisco Lake on Wed, 05 Jun 2024 09:04:58 GMT]]>Hi @Mary_G, ICON wave model (and wave models in general) usually don't provide data all the way to the coast. So yes, You are right, we extrapolate them a bit further to make visualization a bit nicer.

This is what raw forecast data for Ontario lake from ICON global wave model look like:
Screenshot_20240605_090054.png

]]>https://community.windy.com/post/191875https://community.windy.com/post/191875Wed, 05 Jun 2024 09:04:58 GMT