Japan Earthquake Alert Relay
About the Japan Earthquake Alert Relay Camera
This is a monitoring and alert channel rather than a camera. It relays earthquake early warnings, seismic readings, tsunami advisories and rain radar for Japan, with automated voice announcements. For long stretches nothing happens on it, which is the normal state.
It is the second such channel on the site, and works the same way as the first. Japan sits where four tectonic plates meet, and the national early warning system detects the fast P-wave that arrives ahead of the slower, more damaging S-wave. The warning is often only seconds, but enough to stop trains and halt machinery.
Treat it as supplementary. It is a third-party relay and should never be your primary source in an emergency. For official warnings, evacuation instructions and tsunami advisories, always use the Japan Meteorological Agency and your local municipality.
Highlights & Nearby
- •Watch for: seismic alerts, tsunami advisories, rain radar; long quiet periods are normal
- •Official sources: Japan Meteorological Agency (JMA), your local municipality
- •Note: a third-party relay — never rely on it as a primary safety source
Frequently Asked Questions
Is this channel live?
Yes, it runs continuously, relaying earthquake and tsunami information for Japan. Long periods with no activity are normal and expected.
Can I rely on this for emergency warnings?
No. It is a third-party relay and should be treated as supplementary. For official warnings and evacuation instructions, use the Japan Meteorological Agency and your local municipality.
How does Japan's early warning system work?
It detects the fast-moving P-wave that arrives first and issues an alert before the slower, more damaging S-wave. The warning is often only seconds, but enough to stop trains and halt machinery.
How is this different from the other alert channel on the site?
They are separate third-party relays covering the same kind of information. Neither should be used as a primary safety source.
