A strong earthquake has hit the Kuril Islands in Russia
There is no danger of a tsunami, the National Weather Service reported.
The quake struck 177 km (109 miles) south of Severo-Kuril’sk at a depth of 33 km (20 miles), the USGS said.
There were no immediate reports of damage or casualties.
The earthquake was later downgraded to a magnitude 6.3.
The town on the island of Paramushir has a population of more than 2,500 residents as per the 2010 census.
Other nearby places that could be affected are: Vilyuchinsk, Kamtsjatka, Petropavlovsk-Kamchatsky, Kamtsjatka and Klyuchi, Kamtsjatka – all in Russia.
The Kuril tectonic arc extends approximately 2,100 km from Hokkaido, Japan along the Kuril Islands and the Pacific coast of the Kamchatka Peninsula.
Kuril Islands earthquake: a diagram shows the impact of the quake
A tectonic arc is a chain of volcanoes formed along a given area, which can contribute to volatile tectonic plate movements causing tremors and triggering tsunamis.
The Kuril Islands or Kurile Islands, in Russia’s Sakhalin Oblast region, form a volcanic archipelago of almost 1,300 km.
The islands, in an area known as Russia’s Ring of Fire in the vast country’s far east, are susceptible to earthquakes and tsunamis.
The USGS has issued a “green” alert, which means volcanoes in the area are exhibiting normal background activity.