| Origin Time(UTC) | M | Type | Lat | Long | Depth(km below MSL) | Region | Mode | Update(UTC) |
| 2018-05-21 01:58:55 | 1.2 | ML | 31.40° N | 103.60° W | 7 km | Western Texas | M | 2018-05-25 22:04:39 |
| 2018-05-21 03:05:11 | 1.3 | ML | 31.19° N | 103.26° W | 6 km | Western Texas | M | 2018-06-03 01:22:00 |
| 2018-05-21 05:50:50 | 1.3 | ML | 31.39° N | 103.57° W | 4 km | Western Texas | M | 2018-10-10 13:58:20 |
| 2018-05-21 08:44:21 | 1.1 | ML | 31.50° N | 103.64° W | 4 km | Western Texas | M | 2018-05-29 18:41:00 |
| 2018-05-21 10:42:31 | 1.1 | ML | 31.14° N | 103.53° W | 8 km | Western Texas | M | 2018-05-29 18:52:10 |
