M5.4 Earthquake – Northern California

Re:M5.4 Earthquake – Northern California by inspector-g on Thursday May 11, 2023 @07:42PM (#35909892)

I found this notable because it's the first time I've received a push notification in the U.S. about an earthquake, which I received about 10 seconds before the shaking started.

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Re:M5.4 Earthquake – Northern California by llsf on Thursday May 11, 2023 @07:59PM (#35910060)

Interesting. How far are you from the epicenter ? I am in SF, and did not get the message... and did not feel anything either.

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Re:M5.4 Earthquake – Northern California by inspector-g on Thursday May 11, 2023 @08:38PM (#35910359)

I'd say about 70 miles, near Auburn, CA

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Re:M5.4 Earthquake – Northern California by wsinks on Thursday May 11, 2023 @08:03PM (#35910082)

Same experience for me. I didn't feel this nor got a message (which would make sense since we didn't feel it!)

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Re:M5.4 Earthquake – Northern California by skykooler on Thursday May 11, 2023 @08:31PM (#35910318)

Reminds me of https://xkcd.com/723/

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Re:M5.4 Earthquake – Northern California by Fatnino on Thursday May 11, 2023 @11:12PM (#35911434)

Notifications are rare because you need to be far enough from the epicenter that the difference between the speed of the earthquake (speed of sound in rock) and the speed of the notification (speed of light through the internet) is great enough to matter. But at the same time you can't be too far from the epicenter or the shaking where you are will be negligible and the alert pointless. Most earthquakes are too small to have a significant ring around them where notification makes sense.

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