M2.3 earthquake 10km SSW of Lompoc, CA

Magnitude

2.3 (Mh), micro

Magnitude from

Southern California Seismic Network

Local time

Mon, Apr 10, 1978, 10:11 PM PST

UTC

1978-04-11 06:11:30 UTC

Depth

14.4 km (9.0 mi), shallow

Epicenter

34.555° N, 120.495° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 2.4 km horizontally, 0.8 km in depth

Magnitude uncertainty

±0.20

Depth from

From location

Station coverage gap

278°, poorly surrounded by stations

Stations used

12

• Lompoc, CaliforniaPopulation 44,164. Forecast10 kmSSW
• Santa Maria, CaliforniaPopulation 105,093. Forecast45 kmS
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast214 kmWNW

After

1. 2.319km S of Carpinteria, CATue, Apr 11, 3:46 PM PST · 17704 days ago · 13 km deep · 99 km away
2. 1.718km S of Carpinteria, CAWed, Apr 12, 4:17 PM PST · 17703 days ago · 11 km deep · 98 km away
3. 2.419km S of Carpinteria, CAWed, Apr 12, 7:12 PM PST · 17703 days ago · 12 km deep · 100 km away
4. 2.020km S of Carpinteria, CAWed, Apr 12, 7:37 PM PST · 17703 days ago · 9 km deep · 100 km away
5. 1.620km S of Carpinteria, CAWed, Apr 12, 9:01 PM PST · 17703 days ago · 13 km deep · 100 km away
6. 1.819km S of Carpinteria, CAWed, Apr 12, 9:10 PM PST · 17703 days ago · 11 km deep · 99 km away
7. 1.616km N of Santa Cruz Is. (E end), CAWed, Apr 12, 9:25 PM PST · 17703 days ago · 0 km deep · 99 km away
8. 2.320km N of Santa Cruz Is. (E end), CAThu, Apr 13, 1:05 AM PST · 17703 days ago · 15 km deep · 99 km away
9. 2.219km S of Carpinteria, CAThu, Apr 13, 1:24 AM PST · 17703 days ago · 10 km deep · 100 km away
10. 2.019km S of Carpinteria, CAThu, Apr 13, 10:36 AM PST · 17703 days ago · 17 km deep · 98 km away
11. 1.717km N of Santa Cruz Is. (E end), CAFri, Apr 14, 5:52 PM PST · 17701 days ago · 10 km deep · 97 km away
12. 2.518km S of Carpinteria, CASat, Apr 15, 8:54 AM PST · 17701 days ago · 16 km deep · 99 km away
13. 2.419km N of Santa Cruz Is. (E end), CASat, Apr 15, 9:09 AM PST · 17701 days ago · 14 km deep · 99 km away
14. 2.117km N of Santa Cruz Is. (E end), CASat, Apr 15, 9:14 AM PST · 17701 days ago · 2 km deep · 98 km away
15. 2.018km N of Santa Cruz Is. (E end), CASat, Apr 15, 5:55 PM PST · 17700 days ago · 14 km deep · 99 km away
16. 2.519km S of Carpinteria, CASat, Apr 15, 10:39 PM PST · 17700 days ago · 15 km deep · 99 km away
17. 1.720km S of Carpinteria, CATue, Apr 18, 9:41 AM PST · 17698 days ago · 14 km deep · 99 km away
18. 1.818km S of Carpinteria, CATue, Apr 18, 10:33 PM PST · 17697 days ago · 14 km deep · 99 km away
19. 2.019km S of Carpinteria, CATue, Apr 18, 10:53 PM PST · 17697 days ago · 14 km deep · 100 km away
20. 1.719km S of Carpinteria, CAWed, Apr 19, 1:06 AM PST · 17697 days ago · 17 km deep · 99 km away
21. 2.46 km S of Atascadero, CaliforniaSat, Apr 22, 11:05 PM PST · 17693 days ago · 4 km deep · 99 km away
22. 2.022km S of Santa Barbara, CAWed, Apr 26, 12:20 PM PST · 17690 days ago · 6 km deep · 79 km away
23. 3.512km SW of Isla Vista, CAMon, May 1, 1:02 AM PDT · 17685 days ago · 1 km deep · 57 km away
24. 1.518km N of Santa Cruz Is. (E end), CATue, May 2, 9:19 AM PDT · 17684 days ago · 6 km deep · 99 km away
25. 2.310km WSW of Isla Vista, CATue, May 2, 9:59 AM PDT · 17684 days ago · 7 km deep · 53 km away
26. 2.223km SW of Maricopa, CAThu, May 4, 3:31 PM PDT · 17682 days ago · 15 km deep · 93 km away
27. 2.029km NE of San Miguel Is., CATue, May 9, 10:16 PM PDT · 17676 days ago · 4 km deep · 45 km away
28. 1.827km NW of Santa Cruz Is. (NW end), CATue, May 9, 10:32 PM PDT · 17676 days ago · 5 km deep · 48 km away
29. 1.624km NNW of Santa Cruz Is. (NW end), CATue, May 9, 10:48 PM PDT · 17676 days ago · 0 km deep · 52 km away
30. 1.716km SSW of Carpinteria, CAFri, May 12, 2:35 AM PDT · 17674 days ago · 15 km deep · 87 km away
31. 2.436km W of Vandenberg Air Force Base, CASun, May 21, 9:14 AM PDT · 17665 days ago · 6 km deep · 40 km away
32. 2.532km W of Vandenberg Air Force Base, CASun, May 21, 9:22 AM PDT · 17665 days ago · 6 km deep · 39 km away
33. 2.481km W of Vandenberg Air Force Base, CATue, May 30, 3:50 PM PDT · 17656 days ago · 6 km deep · 82 km away
34. 1.820km S of Carpinteria, CAFri, Jun 2, 6:48 AM PDT · 17653 days ago · 13 km deep · 99 km away
35. 2.48km W of Orcutt, CAFri, Jun 9, 12:52 PM PDT · 17646 days ago · 6 km deep · 35 km away

Before

1. 1.819km S of Carpinteria, CAMon, Apr 10, 7:08 AM PST · 17706 days ago · 15 km deep · 99 km away
2. 1.920km S of Carpinteria, CAMon, Apr 10, 7:07 AM PST · 17706 days ago · 16 km deep · 98 km away
3. 2.318km S of Carpinteria, CAMon, Apr 10, 6:47 AM PST · 17706 days ago · 14 km deep · 100 km away
4. 2.319km S of Carpinteria, CAMon, Apr 10, 6:47 AM PST · 17706 days ago · 16 km deep · 99 km away
5. 1.720km N of Santa Cruz Is. (E end), CAMon, Apr 10, 6:32 AM PST · 17706 days ago · 15 km deep · 98 km away
6. 1.819km S of Carpinteria, CAMon, Apr 10, 6:30 AM PST · 17706 days ago · 15 km deep · 100 km away
7. 1.620km S of Carpinteria, CAFri, Apr 7, 2:53 PM PST · 17708 days ago · 14 km deep · 99 km away
8. 1.918km S of Carpinteria, CAFri, Apr 7, 5:45 AM PST · 17709 days ago · 14 km deep · 99 km away
9. 1.616km N of Santa Cruz Is. (E end), CAFri, Apr 7, 12:51 AM PST · 17709 days ago · 3 km deep · 97 km away
10. 2.220km S of Carpinteria, CAFri, Apr 7, 12:37 AM PST · 17709 days ago · 14 km deep · 99 km away
11. 2.418km SSE of Carpinteria, CATue, Apr 4, 6:33 PM PST · 17711 days ago · 10 km deep · 100 km away
12. 2.219km S of Carpinteria, CATue, Apr 4, 7:22 AM PST · 17712 days ago · 16 km deep · 98 km away
13. 1.518km S of Carpinteria, CATue, Apr 4, 7:22 AM PST · 17712 days ago · 4 km deep · 99 km away
14. 1.920km S of Carpinteria, CAMon, Apr 3, 3:10 AM PST · 17713 days ago · 15 km deep · 100 km away
15. 1.519km S of Carpinteria, CASun, Apr 2, 12:23 PM PST · 17714 days ago · 14 km deep · 99 km away
16. 2.019km S of Carpinteria, CASat, Apr 1, 9:01 PM PST · 17714 days ago · 13 km deep · 99 km away
17. 1.518km S of Carpinteria, CASat, Apr 1, 7:30 PM PST · 17714 days ago · 3 km deep · 98 km away
18. 1.819km S of Carpinteria, CASat, Apr 1, 10:32 AM PST · 17715 days ago · 13 km deep · 99 km away
19. 2.319km S of Carpinteria, CASat, Apr 1, 7:49 AM PST · 17715 days ago · 16 km deep · 99 km away
20. 1.819km S of Carpinteria, CASat, Apr 1, 7:16 AM PST · 17715 days ago · 14 km deep · 99 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci3338741. Read Thu, Oct 1, 2026, 10:21 AM UTC.