Kamchatka Earthquake: 5.1 Magnitude Tremor Follows Major Quake and Volcano Eruption in Russia

Kamchatka Earthquake: 5.1 Magnitude Tremor Follows Major Quake and Volcano Eruption

A magnitude 5.1 earthquake has struck the Kamchatsky region of Russia, according to the US Geological Survey (USGS). The tremor occurred near Petropavlovsk-Kamchatsky, 144 km southeast of the region, at a depth of 25 km.

This event follows a powerful 8.8 magnitude earthquake earlier in the week.

Tectonic Activity and Volcanic Eruption

Experts attribute the recent seismic activity to intense tectonic movement along the Pacific "Ring of Fire," where the Pacific Plate subducts under the Okhotsk Plate.

Adding to the instability, the Krasheninnikov volcano erupted overnight on August 3, 2025, marking its first eruption in over 600 years. This volcanic event occurred shortly after the July 29 earthquake, heightening concerns about ongoing tectonic unrest in the area.

Tsunami Alerts

The initial quake triggered tsunami alerts across the Pacific, affecting nations like Russia, Japan, and the United States.