An earthquake measuring 4.9 occurred today in northern Japanese archipelago. Information on casualties or damage were reported. According to the National Meteorological Administration, tsunami threat arose.
The epicenter of the earthquake was located near the eastern coast of the island of Hokkaido, and focus lies beneath the bottom of the Pacific Ocean at a depth of about 80 km. The most powerful tremors felt residents of the port city Nemuro.
The Japanese archipelago is located at the junction of four tectonic plates, so every year there are up to 20 percent of the seating on the earth quake of magnitude 6.0 and above.