Japan Issues Aftershock Warning, Signaling Risk of M8.0+ Earthquakes
A magnitude 7.7 earthquake struck off the coast of Japan, triggering a tsunami warning. The Japan Meteorological Agency has issued "Aftershock Cautionary Information" for the Hokkaido/Sanriku offshore region, warning of an increased risk of magnitude 8.0 or greater earthquakes.
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- 📰 Published: April 20, 2026 at 22:25
- 🔍 Collected: April 20, 2026 at 22:34 (8 min after Published)
- 🤖 AI Analyzed: April 20, 2026 at 22:37 (3 min after Collected)
Central News Agency
(CNA Tokyo, April 20, International News) A strong earthquake measuring 7.7 magnitude struck off the coast of Japan today, triggering a tsunami warning. Authorities have issued "Aftershock Cautionary Information" for the Hokkaido and Sanriku offshore region, warning of an increased risk of earthquakes of magnitude 8.0 or greater.
According to Agence France-Presse, the Japan Meteorological Agency stated in a release, "The possibility of a major earthquake occurring is relatively high compared to usual."
This aftershock cautionary information, issued for the northern region, was released by Japanese authorities several hours after the magnitude 7.7 earthquake struck. The epicenter was located off the Sanriku coast, with a focal depth of approximately 10 kilometers. The JMA initially estimated the magnitude at 7.4, later revised to 7.5, and currently to 7.7.
Japanese Chief Cabinet Secretary Kihara Minoru stated at a press conference that no reports of major casualties or severe damage have been received so far.
An official from the Cabinet Office noted in another televised briefing, "While it is currently uncertain whether (another) major earthquake will occur, we are asking the public to take all necessary disaster preparedness measures based on the principle of protecting their own safety." (Translator: Liu Shuqin) 04201150
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(CNA Tokyo, April 20, International News) A strong earthquake measuring 7.7 magnitude struck off the coast of Japan today, triggering a tsunami warning. Authorities have issued "Aftershock Cautionary Information" for the Hokkaido and Sanriku offshore region, warning of an increased risk of earthquakes of magnitude 8.0 or greater.
According to Agence France-Presse, the Japan Meteorological Agency stated in a release, "The possibility of a major earthquake occurring is relatively high compared to usual."
This aftershock cautionary information, issued for the northern region, was released by Japanese authorities several hours after the magnitude 7.7 earthquake struck. The epicenter was located off the Sanriku coast, with a focal depth of approximately 10 kilometers. The JMA initially estimated the magnitude at 7.4, later revised to 7.5, and currently to 7.7.
Japanese Chief Cabinet Secretary Kihara Minoru stated at a press conference that no reports of major casualties or severe damage have been received so far.
An official from the Cabinet Office noted in another televised briefing, "While it is currently uncertain whether (another) major earthquake will occur, we are asking the public to take all necessary disaster preparedness measures based on the principle of protecting their own safety." (Translator: Liu Shuqin) 04201150
Stand with the truth, and every sponsorship is a force to protect press freedom.
Download the CNA "First News" APP to get the latest news in real-time.
The text, images, and videos on this website may not be reproduced, publicly broadcast, or publicly transmitted and used without authorization.