6.8 Magnitude Earthquake - Russia

An earthquake of preliminary magnitude 6.8 struck today near the Kuril Islands, a remote archipelago between Russia's Far East and Japan, according to the U.S. Geological Survey (USGS).
The temblor's epicenter was 100 miles (161 km) south-southwest of Severo-Kuril'sk, Russia, and 1,231 miles (1,981 km) northeast of Tokyo, Japan. It originated 3 miles (4.9 km) deep and struck at 4:12 a.m. Saturday local time [1812 Friday UTC], the USGS reports.
Earthquakes of this size are considered major and can cause significant damage, especially with poorly built structures. Even well designed buildings can be damaged or, in some cases, destroyed depending on the severity of the quake and a building’s proximity to the epicenter. Earthquakes of this size are sometimes followed by significant aftershocks.
But the damage caused by any single event depends on the quake's depth, proximity to populated areas, building standards in the region, as well as the type of earthquake. The USGS frequently updates the magnitude of an event after more data is analyzed.
An earthquake's magnitude is a measure of the energy released at the source. It is just one predictor of the shaking that may ensue, which is affected by local and regional geology. Scientists know in a general sense what causes Earthquakes but are unable to predict specific quakes.