Key Facts
• July 30, 8:25 AM: Magnitude 8.7 earthquake near Kamchatka Peninsula.
• Tsunami warnings issued for Hokkaido, Chiba, Aichi, and other regions.
• 4-meter tsunami observed in parts of Kamchatka; buildings and containers swept inland.
• Japan Meteorological Agency upgraded alert from advisory to warning after analysis.
• 3-meter tsunami expected in Japan; evacuation orders issued in affected areas.
• Tokyo’s Izu Islands reported missing tsunami observation data at 11:13 AM.
• Train services suspended on Tokaido, Yokosuka, and other lines; Shinkansen unaffected.
• Sendai Airport closed due to tsunami warnings; flights redirected or canceled.
• Government established a crisis management center at 8:37 AM.
• Russian Kamchatka region reported no injuries but some structural damage.
• U.S. issued tsunami advisories for Hawaii, Alaska, and parts of the West Coast.
• Japan Meteorological Agency expects warnings to last 12–24 hours.
• Prime Minister Ishiba emphasized safety and coordinated disaster response.
• Aftershocks up to magnitude 7.5 possible within a month.
Summary
A magnitude 8.7 earthquake struck near the Kamchatka Peninsula on July 30 at 8:25 AM, triggering widespread tsunami warnings across the Pacific. Japan issued alerts for regions including Hokkaido, Chiba, and Aichi, with waves up to 3 meters expected. Kamchatka experienced 4-meter waves, causing structural damage but no reported injuries. Train services in Japan were disrupted, and Sendai Airport was closed. The Japan Meteorological Agency upgraded its alert from advisory to warning after further analysis and expects the warnings to last up to 24 hours. The U.S. issued tsunami advisories for Hawaii, Alaska, and the West Coast. Prime Minister Ishiba urged immediate evacuation and emphasized a coordinated response. Aftershocks up to magnitude 7.5 are anticipated within a month.
