A magnitude-6.4 earthquake was recorded off the coast of Kamchatka, the Kamchatka branch of the Unified Geophysical Service of the Russian Academy of Sciences said.

“Magnitude: 6.4. Intensity in Petropavlovsk-Kamchatsky (preliminary estimate): 3,” it said in a statement.

According to the USGS RAS, this latest aftershock occurred at 1:35 p.m. (Moscow time), 213 km from the capital of the region. The source was recorded at a depth of almost 39 km in the Pacific Ocean.

The aftershock was one of the strongest to follow the main earthquake. On July 30, a magnitude of 8.8 earthquake was recorded, Russia’s strongest since 1952, that struck off the coast of Kamchatka.

Within 20 minutes, four more aftershocks with a magnitude of 4.8 to 5.7 followed.

After the earthquake, six Kamchatka volcanoes became active, including Eurasia’s highest, Klyuchevsky, or Klyuchevskaya Sopka.

Ash emissions, according to scientists’ forecasts, could reach heights of 12 km in the coming days.

In the village of Klyuchi, located in the immediate vicinity of Klyuchevsky, volcanic ash has been observed in the air. The head of the Ust-Kamchatsky district has urged residents not to go out unless absolutely necessary. (PNA)