"not on for japan?" Are you expecting to have gotten a notification in SF for an earthquake in a place a 12 hour flight away? That sounds like annoyance, not a feature.
We also have the MyShake app here in CA, but I don't recall getting a notification through it for the last quake. I was asleep, though, so my memory is hazy.
I was asking if this feature is turned on in iOS for Japan residents for earthquakes in Japan.
There’s 100-300 earthquakes/week in California so MyShake prefers to only warn for the bigger ones.
you can actually customize how strong a quake you're notified for. but ymmv. the recent california quake was actually the first time that app even notified me.