Overview

• USGS placed the epicenter about 111 kilometers east of Petropavlovsk-Kamchatsky at roughly 39.5 kilometers depth.
• Pacific Tsunami Warning Center said dangerous waves could affect coasts within 300 kilometers of the epicenter.
• USGS initially measured the event at magnitude 7.5 before revising it to 7.4.
• Early reports from Russian media indicated no immediate injuries or significant damage.
• The shock fits a months-long sequence tied to the July 30 magnitude 8.8 earthquake that triggered broad Pacific tsunami alerts and evacuations.