A magnitude 5.2 earthquake jolted Japan\'s Gifu-ken at 1:01 p.m. local time Wednesday, according to Japan Meteorological Agency (JMA). The epicenter was initially decided to be at 35.4 degree north latitude and 137.3 degree east longitude, with a depth of 50 km. No damage has been reported so far. The earthquake poses no tsunami risk, according to JMA.