It is noted that the epicenter of the first earthquake was 32 km southeast of the city of Tanabe.
The focus was located at a depth of 10 km.
The epicenter of the subsequent earthquake was located 16 km south of the city of Hitachi.
Its hearth lay at a depth of 60 km.
Earlier it was reported that seismologists recorded an earthquake of magnitude 5.6 off the coast of Alaska.