| Prel. Rep. | Date | Time(UTC) | Time(Local) | Lat. | Lon. | Depth | Mag. | Region | Waveform |
| 2011/05/27 | 20:15:24.3 | 00:45:24.3 | 37.79 | 55.85 | 20 | ML:2.5 | Golestan Province, 55 km North-East of Kalaleh |
| Prel. Rep. | Date | Time(UTC) | Time(Local) | Lat. | Lon. | Depth | Mag. | Region | Waveform |
| 2011/05/27 | 20:15:24.3 | 00:45:24.3 | 37.79 | 55.85 | 20 | ML:2.5 | Golestan Province, 55 km North-East of Kalaleh |