19 Sep
2020
19 Sep
'20
7:37 p.m.
As a person reminded me, Japan's earthquake/tsunami early warning system has been doing this faster and better than the USA for a long time. And yes, the Japanese system wakes up some radios and TVs in the home. On Sat, 19 Sep 2020, Jeff P wrote:
I was awake when it struck, and I received this alert about 3 seconds before the shockwave hit my location:
On Sat, Sep 19, 2020 at 1:40 PM Sean Donelan <sean@donelan.com> wrote: The VP Engineering for Android posted a visualization of the 4.5 earthquake in Southern California from data collected by Android phones.