radar.bloom: Cone of Silence The blind circle over the radar site, where the beam can't see. Ten scans of San Juan radar from 18 Sep 2022, 12:04 UTC, morphed by optical flow. The beam sweeps twice a loop; the cone breathes. Sound: granular rain on tin, with ticks on each pass of the beam. Source: NWS radar (public domain, via Wikimedia Commons). Rain: "Rain (1)" by ezwa (public domain). · Simopia