| Date | Time (UT) | Latitude | Longitude | Depth (km) | Magnitude | State/Province | ID | Details | |
| 2003/01/03 | 05:02:12 | 41.274 | -111.803 | 12.7 | 3.62 | Utah | uu50269900 | 20030103050212 Mechanism | |
| 2003/04/17 | 01:04:19 | 39.505 | -111.885 | 1.4 | 4.24 | Utah | uu50273950 | 20030417010419 Mechanism | |
| 2003/04/29 | 08:59:37 | 34.494 | -85.630 | 19.8 | 4.6 | Alabama | se605341 | 20030429085937 Mechanism | |
| 2003/05/25 | 07:32:33 | 43.087 | -101.794 | 5.0 | 4 | South Dakota | usp000by3k | 20030525073233 Mechanism | |
| 2003/06/06 | 12:29:33 | 36.879 | -88.996 | 2.5 | 4 | Kentucky | nm605194 | 20030606122933 Mechanism | |
| 2003/06/08 | 10:14:54 | 41.247 | -116.340 | 8.3 | 3.8 | Nevada | nn00068466 | 20030608101454 Mechanism | |
| 2003/06/13 | 11:34:40 | 47.700 | -70.090 | 11.1 | 4.1 | Quebec, Canada | usp000bzsc | 20030613113440 Mechanism | |
| 2003/08/16 | 05:09:20 | 36.792 | -91.596 | 0.1 | 3.7 | Missouri | nm605239 | 20030816050920 Mechanism | |
| 2003/09/13 | 15:22:41 | 36.831 | -104.907 | 5.0 | 3.8 | New Mexico | usp000c7ec | 20030913152241 Mechanism | |
| 2003/11/15 | 20:11:59 | 38.221 | -117.874 | 8.8 | 4.2 | Nevada | nn00075644 | 20031115201159 Mechanism | |
| 2003/11/15 | 21:19:37 | 38.220 | -117.871 | 7.1 | 4.3 | Nevada | nn00075650 | 20031115211937 Mechanism | |
| 2003/11/23 | 12:19:59 | 40.729 | -115.148 | 10.0 | 4.5 | Nevada | usp000cdrc | 20031123121959 Mechanism | |
| 2003/12/22 | 19:15:56 | 35.700 | -121.100 | 8.4 | 6.5 | California | nc21323712 | 20031222191556 Mechanism | |