<![CDATA[Inaccurate data]]>I was checking Windy for the cloud forecast, and I noticed that it is completely wrong. The map shows 0% cloud coverage even though we are completely cloud-covered. Is this a lack of data coming in or what? Screenshot 2025-11-06 at 9.51.03 AM.png

What is going on?

]]>https://community.windy.com/topic/42484/inaccurate-dataRSS for NodeWed, 22 Jul 2026 01:58:44 GMTThu, 06 Nov 2025 16:04:00 GMT60<![CDATA[Reply to Inaccurate data on Thu, 06 Nov 2025 16:58:50 GMT]]>@RemyZ
It's difficult to say which model is best. That is why Windy offers several models.
I don't think GFS is the best model, firstly because it has a rather coarse resolution, and secondly because I find it very unstable (for forecasts up to 3 or 4 days or even longer).
In your region, I would look at the European model, ECMWF, for long-term forecasts, and the high-resolution American model, HRRR, for short-term forecasts.

]]>https://community.windy.com/post/220889https://community.windy.com/post/220889Thu, 06 Nov 2025 16:58:50 GMT<![CDATA[Reply to Inaccurate data on Thu, 06 Nov 2025 16:42:25 GMT]]>@idefix37 Good to know. The models are a mystery to me. It's challenging to know which one to pay attention to, as they yield such varied results—0% vs 80%. I usually use the GFS because I saw a tutorial that it was the most accurate.

]]>https://community.windy.com/post/220888https://community.windy.com/post/220888Thu, 06 Nov 2025 16:42:25 GMT<![CDATA[Reply to Inaccurate data on Thu, 06 Nov 2025 16:34:23 GMT]]>@RemyZ
This is a wrong forecast by GFS model.
If you check HRRR and even better ICON you see that this last one is forecasting 82% of cloud cover.

]]>https://community.windy.com/post/220887https://community.windy.com/post/220887Thu, 06 Nov 2025 16:34:23 GMT