A 6.4‑magnitude earthquake struck east of Yakutia, Russia, on Monday, raising fears of ground liquefaction and potential loss of building stability.
Earthquake near Russia
On Monday morning, the German Research Centre for Geosciences (GFZ) recorded a 6.4‑magnitude quake. The U.S. Geological Survey (USGS) reported a slightly lower 6.1 magnitude. Russian geological services stated a 6.2 magnitude. The epicenter was about 28 km deep, roughly 135 km southeast of Petropavlovsk‑Kamchatsky, according to USGS.
Shake Felt and Ground Liquefaction Risk
The quake was felt on land. Russian authorities said only the first shock would be perceptible after that. Director Aleksiy Ozierow of the Institute of Volcanology and Seismology, Far Eastern Branch of the Russian Academy of Sciences, warned that at such strong tremors ground liquefaction is possible, potentially leading to loss of building stability and other infrastructure. Villages at risk include Petropavlovsk‑Kamchatsky, Wiluczyńsk, and Jelizovo.
Aftershocks Expected
Further secondary tremors were anticipated following the initial earthquake, according to the Kamchatka branch of the Federal Research Center of the Unified Geophysical Service of the Russian Academy of Sciences.
Prior Magnitude‑8.8 Event in Kamchatka
On 30 July, an 8.8‑magnitude earthquake struck the Kamchatka region. Geologists note that the Kuril‑Kamchatka arc is one of the most seismically active areas worldwide, with earthquakes reaching depths up to 60 km. The largest depth‑6.0‑magnitude event—9.0—was recorded along the arc on 4 November 1952.
