Aftershocks
According to JMA:
Aftershocks of this earthquake were stronger than the Great Hanshin Earthquake in 1995, but they happened much less frequently.
Over 200 aftershocks were observed in the first 24 hours, with about 400 in total over the first seven days. The largest ones (with Mj5.0 or greater) were
- June 14, 9:20: Mj5.7: Max. seismic intensity reached Strong 5;
- June 14, 12:27: Mj5.2: Max. seismic intensity reached 4;
- June 16, 23:14: Mj5.3: Max. seismic intensity reached 4.
From June 21 to July 1, four to 12 aftershocks were observed each day, with maximum seismic intensities of 3.
Read more about this topic: 2008 Iwate-Miyagi Nairiku Earthquake