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WATCH LIVE: Earthquake Early Warning in Japan

Note: Not an official live feed.

The Earthquake Early Warning (EEW) system in Japan provides data as soon as an earthquake is detected. Depending on a person’s location, it may provide residents an advance warning from a few seconds up to a minute before an earthquake is felt.

However, because the system is automatic and has no time to fully analyze the data, it is prone to errors. Initial alerts sometimes show a significantly higher magnitude, but in most cases it is updated within seconds.

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Earthquakes from Japan’s Meteorological Agency (JMA)