2011 Japan Earthquake Home Video with Early Warning

Omar Diaz · News · 4 min · 2011 · YouTube title: 2011-3-11 (Home Video) Japan Earthquake Live, With Early Warning. Complete Raw

Why it's here

HN cites it as a concrete real-world example of how much warning earthquake early-warning systems can provide.

What it covers

Home video of the 11 March 2011 Japan earthquake, filmed as an early warning system detected the P wave and gave seconds of notice before the shaking began. The raw footage shows the warning in action.