If you run a large meteorology bureau, then you probably have access to a wonderful weather radar for scrying the heavens. If you find yourself bereft of such hardware, though, you could build your own, taking your lead from [Koakno]’s fine example. The motorized parabolic dish was designed to track TV satellites, but here it’s been repurposed into a scanning radar antenna for X-band signals. Echoes come back from rain, hail, and debris, and get down-converted by the LNB back into an 850 MHz signal that the SDR can capture. It’s a useful study of how to build a weather radar, but perhaps not something you can just wire together and fire up without getting in a spot of bother.