Overview

• The USGS measured the earthquake at magnitude 7.4 at 02:37 UTC, locating it 111 km east of Petropavlovsk-Kamchatsky at a depth of 39.5 km.
• The Pacific Tsunami Warning Center initially warned of hazardous waves for nearby Russian coasts, then canceled the threat at 03:48 UTC; Japan reported only slight fluctuations and British Columbia reported no threat.
• Kamchatka governor Vladimir Solodov declared a local tsunami threat and urged people to avoid beaches as emergency teams conducted assessments, with no confirmed casualties or major damage reported.
• Seismologists described the event as most likely an aftershock of the late‑July magnitude 8.8 rupture along the Kuril–Kamchatka subduction zone.
• Early readings varied across agencies, with the USGS revising the magnitude from 7.5 to 7.4 and Germany’s GFZ reporting magnitude 7.1 at a shallower depth near 10 km.