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Japan Meteorological Agency Issues Post-Earthquake Alert for Hokkaido-Sanriku Coasts
The Japan Meteorological Agency announced a 'Hokkaido-Sanriku Coast Post-Earthquake Alert' after a recent magnitude 7.7 earthquake off Sanriku, citing an increased risk of megathrust earthquakes along the Kuril Trench and Japan Trench.
Post-Earthquake Alert Issued
Following a magnitude 7.7 earthquake that struck off the coast of Sanriku on April 20, the Japan Meteorological Agency (JMA) has issued a 'Hokkaido-Sanriku Coast Post-Earthquake Alert'. The JMA stated that the possibility of a large-scale earthquake occurring along the Kuril Trench and Japan Trench is now higher than usual.
Call for Continued Preparedness
The JMA is urging residents in the affected areas to reconfirm their daily disaster preparedness measures. This alert is not a prediction of an imminent earthquake but rather a cautionary measure to encourage readiness due to heightened risk, emphasizing the importance of routine disaster preparation.
*Source: NHK World-Japan (2026-04-25)*
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