| Prel. Rep. | Date | Time(UTC) | Time(Local) | Lat. | Lon. | Depth | Mag. | Region | Waveform |
| 2011/12/23 | 03:52:03.9 | 07:22:03.9 | 36.71 | 55.01 | 14 | ML:2.9 | Semnan Province, 25 km South-East of Ali Abad |
| Prel. Rep. | Date | Time(UTC) | Time(Local) | Lat. | Lon. | Depth | Mag. | Region | Waveform |
| 2011/12/23 | 03:52:03.9 | 07:22:03.9 | 36.71 | 55.01 | 14 | ML:2.9 | Semnan Province, 25 km South-East of Ali Abad |