Quakes jolt Nagano, Niigata prefectures
An earthquake with a preliminary magnitude of 5 struck Nagano Prefecture at 12:48 p.m. Tuesday, the Japan Meteorological Agency reported. No tsunami alert was issued, the agency said.
The epicenter was located at a depth of 20 kilometers in northern Nagano, the agency said.
A second quake with a magnitude of 3.9 jolted Niigata Prefecture and parts of Nagano at 1:33 p.m., the agency said. Its epicenter was located about 10 kms deep in northern Nagano, the agency said.