M1.8 earthquake 24km SW of Lompoc, CA

Magnitude

1.8 (Mh), micro

Magnitude from

Southern California Seismic Network

Local time

Wed, Aug 30, 1978, 7:39 PM PDT

UTC

1978-08-31 02:39:32 UTC

Depth

0.0 km (0.0 mi), shallow

Epicenter

34.463° N, 120.613° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 2.7 km horizontally, 1.7 km in depth

Depth from

From location

Station coverage gap

245°, poorly surrounded by stations

Stations used

5

• Lompoc, CaliforniaPopulation 44,164. Forecast24 kmSW
• Santa Maria, CaliforniaPopulation 105,093. Forecast57 kmSSW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast222 kmWNW

After

1. 1.79km SW of Santa Barbara, CAThu, Aug 31, 6:11 AM PDT · 17565 days ago · 3 km deep · 79 km away
2. 2.520km NE of Santa Cruz Is. (NW end), CAThu, Aug 31, 9:37 AM PDT · 17565 days ago · 17 km deep · 84 km away
3. 1.88km SE of Isla Vista, CASat, Sep 2, 12:06 AM PDT · 17563 days ago · 10 km deep · 75 km away
4. 1.914km S of Santa Barbara, CASun, Sep 3, 3:11 AM PDT · 17562 days ago · 1 km deep · 85 km away
5. 1.97km SW of Santa Barbara, CASun, Sep 3, 8:25 AM PDT · 17562 days ago · 11 km deep · 79 km away
6. 1.816km SSW of Santa Barbara, CASun, Sep 3, 10:18 AM PDT · 17562 days ago · 6 km deep · 80 km away
7. 1.66km SW of Santa Barbara, CASun, Sep 3, 11:37 AM PDT · 17562 days ago · 13 km deep · 80 km away
8. 1.87km SE of Goleta, CASun, Sep 3, 8:26 PM PDT · 17561 days ago · 14 km deep · 77 km away
9. 1.88km SSW of Santa Barbara, CAMon, Sep 4, 10:38 PM PDT · 17560 days ago · 9 km deep · 82 km away
10. 2.620km ENE of Santa Cruz Is. (NW end), CATue, Sep 5, 1:06 AM PDT · 17560 days ago · 19 km deep · 87 km away
11. 1.810km SSW of Santa Barbara, CATue, Sep 5, 7:35 AM PDT · 17560 days ago · 10 km deep · 79 km away
12. 2.17km SW of Santa Barbara, CATue, Sep 5, 1:19 PM PDT · 17560 days ago · 11 km deep · 80 km away
13. 1.76km SSE of Goleta, CAWed, Sep 6, 11:57 AM PDT · 17559 days ago · 13 km deep · 75 km away
14. 2.16km S of Santa Barbara, CAWed, Sep 6, 6:00 PM PDT · 17558 days ago · 11 km deep · 84 km away
15. 1.736km WSW of Vandenberg Air Force Base, CAThu, Sep 7, 5:32 AM PDT · 17558 days ago · 6 km deep · 27 km away
16. 2.77km SSW of Santa Barbara, CAThu, Sep 7, 12:00 PM PDT · 17558 days ago · 12 km deep · 81 km away
17. 1.69km SW of Santa Barbara, CAThu, Sep 7, 4:23 PM PDT · 17557 days ago · 16 km deep · 78 km away
18. 1.92km S of Montecito, CASun, Sep 10, 5:03 AM PDT · 17555 days ago · 6 km deep · 90 km away
19. 2.56km SE of Goleta, CASun, Sep 10, 8:28 AM PDT · 17555 days ago · 11 km deep · 76 km away
20. 2.17km SSE of Goleta, CASun, Sep 10, 9:19 PM PDT · 17554 days ago · 11 km deep · 76 km away
21. 1.610km SSE of Isla Vista, CAMon, Sep 11, 4:51 AM PDT · 17554 days ago · 0 km deep · 74 km away
22. 3.56km WSW of Santa Barbara, CATue, Sep 12, 4:57 AM PDT · 17553 days ago · 15 km deep · 79 km away
23. 1.817km S of Santa Barbara, CATue, Sep 12, 10:04 AM PDT · 17553 days ago · 6 km deep · 89 km away
24. 2.214km NW of Santa Cruz Is. (E end), CAWed, Sep 13, 6:07 PM PDT · 17551 days ago · 20 km deep · 98 km away
25. 2.08km SSW of Santa Barbara, CAFri, Sep 15, 7:33 AM PDT · 17550 days ago · 11 km deep · 81 km away
26. 1.812km SSW of Santa Barbara, CAFri, Sep 15, 6:31 PM PDT · 17549 days ago · 0 km deep · 80 km away
27. 1.69km SE of Isla Vista, CASat, Sep 16, 2:19 AM PDT · 17549 days ago · 4 km deep · 75 km away
28. 2.812km S of Santa Barbara, CASat, Sep 16, 2:48 AM PDT · 17549 days ago · 12 km deep · 85 km away
29. 2.59km SSE of Goleta, CASun, Sep 17, 6:38 PM PDT · 17547 days ago · 12 km deep · 77 km away
30. 1.914km SSE of Isla Vista, CATue, Sep 19, 10:42 AM PDT · 17546 days ago · 6 km deep · 78 km away
31. 2.26km ENE of Orcutt, CATue, Sep 19, 5:39 PM PDT · 17545 days ago · 0 km deep · 52 km away
32. 2.38km S of Santa Barbara, CATue, Sep 19, 9:18 PM PDT · 17545 days ago · 10 km deep · 84 km away
33. 1.713km SSW of Santa Barbara, CAThu, Sep 21, 3:25 AM PDT · 17544 days ago · 6 km deep · 81 km away
34. 1.71km ENE of Isla Vista, CAThu, Sep 21, 8:05 PM PDT · 17543 days ago · 22 km deep · 70 km away
35. 1.712km SSW of Santa Barbara, CAFri, Sep 22, 7:57 AM PDT · 17543 days ago · 3 km deep · 80 km away
36. 2.011km SSW of Santa Barbara, CASat, Sep 23, 10:40 AM PDT · 17542 days ago · 0 km deep · 82 km away
37. 3.56km SW of Santa Barbara, CASat, Sep 23, 7:04 PM PDT · 17541 days ago · 12 km deep · 81 km away
38. 1.89km SE of Isla Vista, CAMon, Sep 25, 5:02 PM PDT · 17539 days ago · 6 km deep · 76 km away
39. 2.07km SSW of Santa Barbara, CAThu, Sep 28, 8:36 AM PDT · 17537 days ago · 10 km deep · 81 km away
40. 1.77km SE of Goleta, CAThu, Sep 28, 2:23 PM PDT · 17536 days ago · 11 km deep · 77 km away
41. 1.95km SE of Isla Vista, CAFri, Sep 29, 4:06 AM PDT · 17536 days ago · 14 km deep · 73 km away
42. 1.710km SE of Isla Vista, CAFri, Sep 29, 6:35 PM PDT · 17535 days ago · 10 km deep · 77 km away
43. 2.614km NW of Santa Rosa Is., CATue, Oct 3, 8:01 AM PDT · 17532 days ago · 10 km deep · 60 km away
44. 1.87km SE of Isla Vista, CAFri, Oct 6, 9:26 AM PDT · 17529 days ago · 11 km deep · 75 km away
45. 2.410km SE of Isla Vista, CASat, Oct 7, 7:22 PM PDT · 17527 days ago · 3 km deep · 77 km away
46. 1.87km WSW of Santa Barbara, CAMon, Oct 9, 2:22 PM PDT · 17525 days ago · 11 km deep · 78 km away
47. 2.25km SSE of Santa Maria, CATue, Oct 10, 3:14 AM PDT · 17525 days ago · 1 km deep · 54 km away
48. 2.110km SSW of Santa Barbara, CATue, Oct 10, 11:31 AM PDT · 17525 days ago · 4 km deep · 80 km away
49. 1.88km SW of Santa Barbara, CAFri, Oct 13, 2:06 AM PDT · 17522 days ago · 11 km deep · 78 km away
50. 1.55km SE of Goleta, CAFri, Oct 13, 11:01 AM PDT · 17522 days ago · 2 km deep · 76 km away
51. 1.88km SE of Isla Vista, CATue, Oct 17, 9:39 AM PDT · 17518 days ago · 9 km deep · 76 km away
52. 1.77km WSW of Santa Barbara, CAThu, Oct 19, 2:17 PM PDT · 17515 days ago · 12 km deep · 78 km away
53. 2.128km S of Santa Rosa Is., CAFri, Oct 20, 3:00 AM PDT · 17515 days ago · 6 km deep · 96 km away
54. 1.510km SE of Isla Vista, CAWed, Oct 25, 7:04 PM PDT · 17509 days ago · 9 km deep · 77 km away

Before

1. 1.84km SE of Goleta, CAWed, Aug 30, 3:54 AM PDT · 17566 days ago · 13 km deep · 75 km away
2. 1.921km SSW of Lompoc, CAWed, Aug 30, 2:09 AM PDT · 17566 days ago · 0 km deep · 4 km away
3. 1.87km SW of Santa Barbara, CATue, Aug 29, 6:23 PM PDT · 17566 days ago · 11 km deep · 79 km away
4. 2.28km SW of Santa Barbara, CATue, Aug 29, 4:06 PM PDT · 17566 days ago · 12 km deep · 79 km away
5. 1.510km SSW of Santa Barbara, CATue, Aug 29, 12:03 PM PDT · 17567 days ago · 4 km deep · 79 km away
6. 1.75km S of Santa Barbara, CATue, Aug 29, 10:20 AM PDT · 17567 days ago · 9 km deep · 84 km away
7. 1.69km SE of Isla Vista, CATue, Aug 29, 8:28 AM PDT · 17567 days ago · 10 km deep · 77 km away
8. 2.58km SE of Isla Vista, CATue, Aug 29, 3:51 AM PDT · 17567 days ago · 4 km deep · 75 km away
9. 1.516km S of Santa Barbara, CATue, Aug 29, 1:52 AM PDT · 17567 days ago · 6 km deep · 85 km away
10. 1.86km SW of Santa Barbara, CATue, Aug 29, 1:46 AM PDT · 17567 days ago · 3 km deep · 80 km away
11. 2.88km SW of Santa Barbara, CAMon, Aug 28, 11:04 PM PDT · 17567 days ago · 14 km deep · 79 km away
12. 2.09km SSW of Santa Barbara, CAMon, Aug 28, 10:47 PM PDT · 17567 days ago · 11 km deep · 80 km away
13. 1.79km SSE of Isla Vista, CAMon, Aug 28, 8:57 PM PDT · 17567 days ago · 3 km deep · 74 km away
14. 2.012km SSW of Santa Barbara, CAMon, Aug 28, 8:18 PM PDT · 17567 days ago · 3 km deep · 81 km away
15. 1.78km SE of Isla Vista, CAMon, Aug 28, 3:58 PM PDT · 17567 days ago · 12 km deep · 75 km away
16. 2.29km SSW of Santa Barbara, CAMon, Aug 28, 2:33 AM PDT · 17568 days ago · 5 km deep · 80 km away
17. 1.913km S of Santa Barbara, CAMon, Aug 28, 1:39 AM PDT · 17568 days ago · 2 km deep · 84 km away
18. 1.77km SE of Goleta, CASun, Aug 27, 7:47 PM PDT · 17568 days ago · 4 km deep · 77 km away
19. 2.113km S of Santa Barbara, CASun, Aug 27, 5:44 PM PDT · 17568 days ago · 2 km deep · 85 km away
20. 1.718km SSW of Santa Barbara, CASat, Aug 26, 4:38 PM PDT · 17569 days ago · 0 km deep · 81 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci3341485. Read Sat, Oct 3, 2026, 8:30 AM UTC.