cat just went tearing through the house like her tail was on fire, twice (up and around and back vs. the usual up)

which usually means she pooped on something, but there's nothing

and now I'm bracing for an earthquake because I remember my uncle before the big one in '89, when his usually fairly calm cat went tearing through the house for no apparent reason about five minutes beforehand

will it happen? Probably not, she was probably just startled by something or chasing a bug, but damn