You can't tell from the video
when a non cat human person would first feel the tremor. Also you can hear the sound that gets their attention.
(
Mudface The web isn't callipygian, Wed 18 Jul 2018, 9:38,
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Pretty much
Animals do tend to notice it first though. I mean, it's like... you could maybe notice it, if you happened to be paying attention - but cats/dogs/cows always seem to notice.
[Based on personal experiences]
In this specific case, I think the P-wave causes a bit of a shake - if you watch the piece of paper, it moves a bit.
I definitely remember noticing one quake "before it happened" - just a sorta wierd feeling a few secs before it hit - but whether there was a bit of a shake that made me feel weird, or whether I heard something, IDK.
Other times, I saw animals react first, and was wondering what had spooked them when the shaking started.
(Quakes are pretty common in Japan - like, maybe once a month - and a bit common in NZ too. I lived in both those places for some years.)
(, Wed 18 Jul 2018, 9:42, Share, Reply)
In any case you couldn't rely on cats for early warning.
Too many false positives. You'll never know if you're about to be hit by a tsunami or a cucumber.
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Mudface The web isn't callipygian, Wed 18 Jul 2018, 10:03,
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Early warning systems can help
You can get automatic mobile phone text warnings in Japan. Generally you only have a few seconds to react...maybe a minute, at best. It's still reckoned to have saved many lives.
For a tsunami, it's more effective, because you might get half an hour to evacuate.
(, Wed 18 Jul 2018, 16:53, Share, Reply)