<![CDATA[Radar nowcasting model]]>Re: Radar Nowcasting
Hello,
I wonder which method is used for the radar nowcasting. Is it an open-source model ?
Does it rely solely on "black-box" machine learning, or does it contain an physical equation such as a kind of "advection equation" ?
Thank you,
Mathieu

]]>https://community.windy.com/topic/43559/radar-nowcasting-modelRSS for NodeSun, 19 Apr 2026 18:52:59 GMTWed, 11 Feb 2026 11:18:29 GMT60<![CDATA[Reply to Radar nowcasting model on Thu, 26 Feb 2026 07:50:44 GMT]]>Thanks for the clarification, that makes sense and it is interesting that you keep radar to simple extrapolation. Have you tested any ML based approaches for short term convective development, or do you find optical flow sufficient for your typical forecast horizons?

]]>https://community.windy.com/post/225175https://community.windy.com/post/225175Thu, 26 Feb 2026 07:50:44 GMT<![CDATA[Reply to Radar nowcasting model on Thu, 12 Feb 2026 08:23:27 GMT]]>@Mathieu-Landreau Hi, we use  sparse Lucas Kanade optical flow with Inverse distance weighting interpolation, similarly but not the same as pySTEPS dense_lucaskanade() method or rainymotion SparseSD model

For satellite advection we use Semi Lagrangian scheme, for radar we use just simple extrapolation

]]>https://community.windy.com/post/224782https://community.windy.com/post/224782Thu, 12 Feb 2026 08:23:27 GMT