Comment by Aboutplants
11 hours ago
45 seconds is an incredible accomplishment. That’s a decent amount of heads up to get safer place. Obviously nerve wracking but great progress in alerts
11 hours ago
45 seconds is an incredible accomplishment. That’s a decent amount of heads up to get safer place. Obviously nerve wracking but great progress in alerts
Earthquake early warning systems are a top 10 peak human achievement in my book. No joke, I tear up watching videos of Japan's EEW system alerting people of possible danger just in time.
There are streamers who's whole thing is watching these alerts and setting up bobbleheads and glasses of water and stuff to show the shaking. It's so so so cool. Look at what we can do for each other you guys :')
https://www.youtube.com/watch?v=imH-ZyXwX5Q
This clip always gets me:
https://www.youtube.com/watch?v=YUamLkVCtLg
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It sounds impressive but it's worth considering that this was a large quake that was felt by basically half of the country. You do not get this much warning if you are anywhere near where damage happens.
The 45 seconds is better thought of as the time it takes for the quake to propagate to Tokyo
Yeah. That's leagues better than what I get in Taiwan. The alert often arrives when the building is shaking or even after. I've never had a meaningful headstart.
I usually get it a few seconds ahead of time at least, in Taipei. I figured it's more related to the proximity than anything else.
It would seem the forewarning depends a lot on the distance from the epicentre. This quake, for Tokyoites, was far enough from them that they could beat the earthquake's speed. I'm fairly certain the people on the East Coast near the quake got no notification ahead of the event.
I was in a chat with people in NYC when it hit. They got advance notice, although it was just “why is everything shaking?” Followed by me going silent for a bit, so they didn’t know what was going on until it reached them.
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