As a guy who is into weird shit and often monitors multiple different frequencies and whatnot this is the sort of phenomenon I live for. I'm just glad I managed to figure out how to show folks the same animation I saw... Took me a while to realize about the back lobe and whatnot.. it was throwing off my origin point of minot AFB as it looked for a moment it had come from far lower in ND.

Weird shit. Gonna try and do some digging myself to see if it's a normal thing or if I caught something weird accidently.