A record-breaking deep earthquake registered in May 2025 offshore of Japan likely was not a tectonic event, but triggered by a mineralogical shift in Earth’s mantle.
The earthquake in Japan was a magnitude of 6.7, according to CBS News. It was initially measured as a 6.9, but Japan’s meteorological agency decreased it after re-examining the event.
Don’t worry: It’s general enough to apply to the rest of Japan. But for busy people, here’s a summary of things you should know about what to do before, during and after an earthquake in Japan.