Overview

• USGS measured the earthquake at magnitude 7.8 at 11:58 a.m. PT, about 90–128 km east of Petropavlovsk-Kamchatsky at a depth of 10 km.
• The National Tsunami Warning Center limited alerts to the Western Aleutians, with no advisory for the continental U.S. or Canada.
• Forecast guidance warned of possible 1–3 meter waves along parts of Russia’s Pacific coast, with Shemya projected to see waves around 12:20 p.m. AKDT.
• Two notable aftershocks, magnitudes 5.8 and 5.4, were recorded minutes after the mainshock, according to USGS data.
• Initial reports from monitoring agencies indicated no confirmed damage or injuries, and British Columbia officials said they were assessing regional risk.