Shallow M5.5 earthquake hits offshore Kamchatka, Russia
A shallow earthquake measuring M5.5 occurred at 04:45 UTC on November 4, 2025, approximately 150 km (93 miles) southeast of Petropavlovsk-Kamchatsky, Russia. The event originated at a depth of 21.0 km (13.0 miles), with its epicenter located at 160.5°E, 52.3°N.
The earthquake’s coordinates place it offshore southeast of the Kamchatka Peninsula, situated in the northwestern Pacific region. This area is known for its proximity to the Kuril-Kamchatka Trench and is part of a seismically active zone, but the nearest major settlement is Petropavlovsk-Kamchatsky to the northwest.
Potentially impacted infrastructure in this region could include maritime ports, coastal facilities, and regional transport links, given the area’s reliance on both sea and land connections in the Russian Far East.
There is no tsunami threat associated with this earthquake, based on its location and available data.
USGS issued a green alert for this event, indicating a low likelihood of casualties or damage.
The maximum estimated intensity for this event is IV, and the significance index is 465 (on a scale that runs through 1 000), based on magnitude, felt reports, and estimated impact.
The Kamchatka Peninsula lies along the boundary between the Pacific Plate and the Okhotsk Plate, an area renowned for frequent moderate to strong seismic activity due to subduction processes.
This information was last updated at 05:09 UTC on November 4, 2025.