Overview

• The quake struck at 18:58 local time about 128 kilometers east of Petropavlovsk-Kamchatsky at a depth of roughly 10 kilometers, according to the USGS.
• Regional authorities and the Pacific Tsunami Warning Center issued alerts for possible hazardous waves, then Russia’s emergency ministry lifted the tsunami warning about two hours later.
• Officials reported no immediate casualties, evacuations or significant damage, and emergency services in Kamchatka were placed on maximum alert as checks continued.
• USGS identified the event as the largest aftershock of the July 30 magnitude‑8.8 earthquake, consistent with reverse faulting along the Kuril–Kamchatka subduction zone.
• Russian and regional agencies posted differing early readings on magnitude and depth, highlighting routine discrepancies in initial seismic estimates.