Right when the guy in that last video said 'sugoi' is about when I said 'oh shit' and crawled under my desk. The amazing thing is that I sat at my desk for about 30 seconds beforehand wondering when this 'rather large' earthquake was going to start to slow down rather than escalate.
After feeling a lot of them, you start to be able to guess their distance and severity based on the P-wave vs S-wave timing of what you feel. It's kind of like counting seconds after seeing lighting until you hear thunder except you have 2 components:
After feeling a lot of them, you start to be able to guess their distance and severity based on the P-wave vs S-wave timing of what you feel. It's kind of like counting seconds after seeing lighting until you hear thunder except you have 2 components:
https://en.wikipedia.org/wiki/Seismic_wave