You know, I'm pretty sure they didn't, neither did the glass break sensors. I think I need to purchase about 20 battery backups so my Google homes can announce the issues.
Would have been nice if they had announced the quake, I almost didn't notice it.
Edit: I stand corrected, glass break sensors DID go-off, and it wasn't a false alarm.
Glad you and your electronics are fine...slightly worried about the big one in SoCal. We usually have earthquakes that we can feel every other year. But nothing has happened for the past few years so something could be building up.
I am still using ST at my main house that controls the valve for my fire sprinklers. So my internet needs to stay functional in the event of an earthquake. Have two Tesla Powerwall's on its way so power won't be an issue.
I hope you are OK. I've only been near one earthquake and have no desire to experience it again. While I have a 20 KW generator, I suspect an earthquake would likely disrupt the natural gas supply.