I was looking at P-wave earthquake alarms after a viral video showed a group of cats simultaneously recognizing the sound/vibration of a P-wave. They're only about $50 USD. Anyone ever tried them and do they work?

https://earthquake.usgs.gov/earthquakes/eventpage/us70008jr5...

I'm in Boise. It was a long and strong one. Ah… it reminded me of home.

I hope it didn't do too much damage to the old brick buildings downtown.

I felt it here in the Bitterroot of MT. Shook the cabin pretty good with a weird rolling motion.