Overview

• An 8.8-magnitude earthquake struck at a 12-mile depth, 78 miles southeast of Petropavlovsk-Kamchatsky, on July 30.
• Tsunami waves up to 4 meters inundated Kamchatka’s coast and reached Hokkaido and Severo-Kurilsk, prompting mass evacuations.
• Japan Meteorological Agency and US Pacific Tsunami Warning Center downgraded or lifted alerts by July 31 as wave heights fell below threat levels.
• Workers at the Fukushima Daiichi nuclear plant were evacuated as a precaution, with TEPCO reporting no abnormalities at the facility.
• Emergency teams report no major injuries and are monitoring aftershocks while assessing the performance of alert systems.