| Origin Time(UTC) | M | Type | Lat | Long | Depth(km below MSL) | Region | Mode | Update(UTC) |
| 2018-04-21 05:44:17 | 2.7 | ML | 28.99° N | 97.88° W | 7 km | Near Coast of Texas | M | 2018-04-23 14:34:30 |
| 2018-04-21 22:43:20 | 2.0 | ML | 31.10° N | 103.46° W | 5 km | Western Texas | M | 2018-04-23 16:37:19 |
