[mort96]

It doesn't sound like the iPhone was behind, but rather warning about something else? It's interesting that Android didn't warn about the tsunami at all, even though that sounds more important than the barely noticable tremors you describe.

[gamblor956]

Why would the Android give a notification for a tsunami that never happened?

Androids also give tsunami warnings, when appropriate. There was 1 issued just a few weeks ago after an off-shore earthquake in SoCal.

[powersnail]

My Android did give me a tsunami warning this morning though, but no earthquake warning.

[lern_too_spel]

The tsunami warning was in effect all the way down to Santa Cruz. The earthquake alert is sent only if you are expected to experience some particular level of shaking or higher in your location.