@Gail-Hamilton said in radar future forecast: in Windy the “forecast models” listed (like ECMWF or GFS) are actually numerical weather models rather than direct radar-based future frames, which is probably why they appear confusing It is not confusing. Weather forecast is done by weather models NOT by radars which are observation devices, nothing else. The extrapolation of the last image of the radar loop is just an extrapolation. See this article in Windy to understand what a weather radar is..