M3.1 earthquake 1km SW of Anza, CA

Magnitude

3.1 (ML, local (Richter)), minor

Magnitude from

Southern California Seismic Network

Local time

Sat, Jul 18, 1981, 5:48 AM PDT

UTC

1981-07-18 12:48:16 UTC

Depth

7.0 km (4.3 mi), shallow

Epicenter

33.551° N, 116.681° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.4 km horizontally, 1.1 km in depth

Magnitude uncertainty

±0.14

Depth from

From location

Station coverage gap

21°

Stations used

54

• Anza, CaliforniaPopulation 3,014. Forecast1 kmSW
• Valle Vista, CaliforniaPopulation 14,578. Forecast29 kmSE
• Temecula, CaliforniaPopulation 110,003. Forecast44 kmE
• San Diego, CaliforniaPopulation 1,404,452. Forecast103 kmNNE

After

1. 1.69km NE of Aguanga, CASat, Jul 18, 8:54 AM PDT · 16512 days ago · 3 km deep · 11 km away
2. 2.121km W of Westmorland, CASat, Jul 18, 9:10 AM PDT · 16512 days ago · 4 km deep · 98 km away
3. 2.012km ENE of Coachella, CASat, Jul 18, 2:36 PM PDT · 16512 days ago · 3 km deep · 61 km away
4. 1.56km SSW of Salton City, CASat, Jul 18, 10:35 PM PDT · 16511 days ago · 4 km deep · 74 km away
5. 2.811km ENE of Coachella, CASat, Jul 18, 11:57 PM PDT · 16511 days ago · 2 km deep · 60 km away
6. 1.511km NNW of Borrego Springs, CASun, Jul 19, 1:08 PM PDT · 16511 days ago · 3 km deep · 34 km away
7. 1.72km ESE of Loma Linda, CASun, Jul 19, 9:04 PM PDT · 16511 days ago · 16 km deep · 75 km away
8. 2.46km S of Salton City, CAMon, Jul 20, 8:46 AM PDT · 16510 days ago · 6 km deep · 75 km away
9. 1.631km SE of Twentynine Palms, CAMon, Jul 20, 7:30 PM PDT · 16510 days ago · 4 km deep · 86 km away
10. 1.511km NE of Aguanga, CATue, Jul 21, 6:42 PM PDT · 16509 days ago · 3 km deep · 10 km away
11. 1.710km ENE of Borrego Springs, CAWed, Jul 22, 4:08 AM PDT · 16508 days ago · 9 km deep · 46 km away
12. 2.218km ESE of Julian, CAWed, Jul 22, 7:04 AM PDT · 16508 days ago · 7 km deep · 62 km away
13. 2.010km NE of Aguanga, CAWed, Jul 22, 9:03 AM PDT · 16508 days ago · 4 km deep · 11 km away
14. 1.511km NW of Julian, CAWed, Jul 22, 10:44 AM PDT · 16508 days ago · 17 km deep · 44 km away
15. 1.76km S of Salton City, CAWed, Jul 22, 2:40 PM PDT · 16508 days ago · 5 km deep · 75 km away
16. 1.511km NE of Aguanga, CAWed, Jul 22, 6:04 PM PDT · 16508 days ago · 2 km deep · 10 km away
17. 1.58km ENE of Indio, CAThu, Jul 23, 10:19 AM PDT · 16507 days ago · 4 km deep · 55 km away
18. 1.86km WSW of Salton City, CAThu, Jul 23, 1:14 PM PDT · 16507 days ago · 2 km deep · 69 km away
19. 2.410km NE of Aguanga, CAThu, Jul 23, 1:31 PM PDT · 16507 days ago · 0 km deep · 11 km away
20. 1.610km NE of Aguanga, CAThu, Jul 23, 7:17 PM PDT · 16507 days ago · 1 km deep · 11 km away
21. 1.710km NNE of Borrego Springs, CAFri, Jul 24, 4:16 PM PDT · 16506 days ago · 12 km deep · 38 km away
22. 2.68km ENE of Aguanga, CAFri, Jul 24, 11:24 PM PDT · 16505 days ago · 4 km deep · 13 km away
23. 2.07km NE of Aguanga, CAFri, Jul 24, 11:28 PM PDT · 16505 days ago · 0 km deep · 14 km away
24. 1.65km NE of Anza, CASat, Jul 25, 11:03 PM PDT · 16504 days ago · 13 km deep · 6 km away
25. 1.65km NE of Anza, CASun, Jul 26, 3:36 AM PDT · 16504 days ago · 13 km deep · 6 km away
26. 2.012km SSW of Idyllwild, CASun, Jul 26, 5:24 PM PDT · 16504 days ago · 12 km deep · 14 km away
27. 1.67km SSW of Salton City, CAMon, Jul 27, 3:17 AM PDT · 16503 days ago · 3 km deep · 72 km away
28. 1.618km N of Borrego Springs, CAMon, Jul 27, 9:52 AM PDT · 16503 days ago · 11 km deep · 31 km away
29. 2.811km SW of Morongo Valley, CAMon, Jul 27, 11:22 AM PDT · 16503 days ago · 14 km deep · 47 km away
30. 1.511km SW of Morongo Valley, CAMon, Jul 27, 12:29 PM PDT · 16503 days ago · 16 km deep · 48 km away
31. 1.55km E of Palomar Observatory, CATue, Jul 28, 2:17 AM PDT · 16502 days ago · 3 km deep · 26 km away
32. 1.911km NE of Lake Arrowhead, CATue, Jul 28, 8:46 AM PDT · 16502 days ago · 1 km deep · 93 km away
33. 1.525km ESE of Ocotillo Wells, CAWed, Jul 29, 6:34 AM PDT · 16501 days ago · 9 km deep · 93 km away
34. 3.411km ENE of Julian, CAWed, Jul 29, 2:28 PM PDT · 16501 days ago · 10 km deep · 50 km away
35. 1.911km NE of Julian, CAWed, Jul 29, 4:11 PM PDT · 16501 days ago · 9 km deep · 47 km away
36. 1.610km NE of Aguanga, CAThu, Jul 30, 2:49 AM PDT · 16500 days ago · 3 km deep · 11 km away
37. 1.711km WSW of Anza, CAThu, Jul 30, 5:09 AM PDT · 16500 days ago · 1 km deep · 10 km away
38. 1.810km NE of Aguanga, CAThu, Jul 30, 9:58 AM PDT · 16500 days ago · 2 km deep · 10 km away
39. 2.05km WSW of Ocotillo Wells, CAThu, Jul 30, 10:51 AM PDT · 16500 days ago · 6 km deep · 67 km away
40. 1.510km WSW of Anza, CAThu, Jul 30, 11:03 AM PDT · 16500 days ago · 9 km deep · 9 km away
41. 1.54km WSW of Ocotillo Wells, CAThu, Jul 30, 3:01 PM PDT · 16500 days ago · 6 km deep · 66 km away
42. 1.56km S of Salton City, CAFri, Jul 31, 5:10 PM PDT · 16499 days ago · 3 km deep · 74 km away
43. 1.734km NNE of North Shore, CASat, Aug 1, 1:55 AM PDT · 16498 days ago · 4 km deep · 88 km away
44. 1.622km NNW of Yucca Valley, CASat, Aug 1, 3:57 AM PDT · 16498 days ago · 1 km deep · 86 km away
45. 1.634km NNE of North Shore, CASun, Aug 2, 1:51 AM PDT · 16497 days ago · 1 km deep · 88 km away
46. 1.534km NNE of North Shore, CASun, Aug 2, 3:17 AM PDT · 16497 days ago · 4 km deep · 88 km away
47. 1.62km NW of Palomar Observatory, CASun, Aug 2, 8:36 PM PDT · 16497 days ago · 3 km deep · 27 km away
48. 2.522km N of Yucca Valley, CATue, Aug 4, 6:23 AM PDT · 16495 days ago · -1 km deep · 87 km away
49. 1.810km NNE of Borrego Springs, CATue, Aug 4, 8:59 AM PDT · 16495 days ago · 13 km deep · 39 km away
50. 1.72km WNW of Highland, CATue, Aug 4, 11:33 AM PDT · 16495 days ago · 3 km deep · 82 km away
51. 2.011km NNE of Julian, CATue, Aug 4, 3:41 PM PDT · 16495 days ago · 11 km deep · 44 km away
52. 1.626km NE of Thermal, CATue, Aug 4, 7:28 PM PDT · 16495 days ago · 0 km deep · 75 km away
53. 2.89km ENE of Aguanga, CAWed, Aug 5, 7:18 PM PDT · 16494 days ago · 3 km deep · 12 km away
54. 1.510km NNE of Julian, CAThu, Aug 6, 12:20 AM PDT · 16493 days ago · 15 km deep · 45 km away
55. 1.621km ESE of Anza, CAThu, Aug 6, 10:28 AM PDT · 16493 days ago · 6 km deep · 22 km away
56. 1.813km NNE of Pine Valley, CAThu, Aug 6, 2:46 PM PDT · 16493 days ago · 1 km deep · 72 km away
57. 1.616km NE of Thousand Palms, CAFri, Aug 7, 7:45 AM PDT · 16492 days ago · 3 km deep · 56 km away
58. 1.56km NNE of Joshua Tree, CAFri, Aug 7, 9:52 AM PDT · 16492 days ago · -1 km deep · 79 km away
59. 1.56km NNE of Joshua Tree, CASat, Aug 8, 10:18 AM PDT · 16491 days ago · -1 km deep · 79 km away
60. 1.511km SW of Anza, CASun, Aug 9, 2:28 AM PDT · 16490 days ago · 5 km deep · 10 km away

The first 60 of 187.

Before

1. 1.57km SW of Salton City, CAFri, Jul 17, 4:46 PM PDT · 16513 days ago · 3 km deep · 71 km away
2. 1.59km SSW of Corona, CAFri, Jul 17, 1:21 PM PDT · 16513 days ago · 3 km deep · 91 km away
3. 1.58km NE of Borrego Springs, CAFri, Jul 17, 10:42 AM PDT · 16513 days ago · 3 km deep · 43 km away
4. 1.912km ENE of Thermal, CAFri, Jul 17, 12:57 AM PDT · 16513 days ago · 4 km deep · 63 km away
5. 1.534km NNE of North Shore, CAWed, Jul 15, 6:28 AM PDT · 16515 days ago · 3 km deep · 88 km away
6. 1.734km NNE of North Shore, CAWed, Jul 15, 4:49 AM PDT · 16515 days ago · 6 km deep · 88 km away
7. 1.533km NNW of Joshua Tree, CATue, Jul 14, 12:16 PM PDT · 16516 days ago · 6 km deep · 98 km away
8. 1.52km NW of Cabazon, CATue, Jul 14, 1:46 AM PDT · 16516 days ago · 16 km deep · 43 km away
9. 1.624km ESE of Anza, CAMon, Jul 13, 6:58 PM PDT · 16517 days ago · 11 km deep · 24 km away
10. 1.57km N of Ocotillo Wells, CASun, Jul 12, 6:44 PM PDT · 16518 days ago · 8 km deep · 63 km away
11. 1.86km WSW of Salton City, CASun, Jul 12, 5:36 PM PDT · 16518 days ago · 2 km deep · 69 km away
12. 1.77km WSW of Salton City, CASun, Jul 12, 4:33 PM PDT · 16518 days ago · 2 km deep · 68 km away
13. 1.58km W of Salton City, CASun, Jul 12, 3:33 PM PDT · 16518 days ago · 4 km deep · 67 km away
14. 2.46km WSW of Salton City, CASun, Jul 12, 11:58 AM PDT · 16518 days ago · 4 km deep · 69 km away
15. 1.66km WSW of Salton City, CASun, Jul 12, 9:35 AM PDT · 16518 days ago · 2 km deep · 69 km away
16. 1.934km NNE of North Shore, CASun, Jul 12, 8:56 AM PDT · 16518 days ago · 3 km deep · 88 km away
17. 2.08km E of Borrego Springs, CASat, Jul 11, 2:36 PM PDT · 16519 days ago · 12 km deep · 50 km away
18. 1.69km SW of Corona, CASat, Jul 11, 7:04 AM PDT · 16519 days ago · 7 km deep · 94 km away
19. 1.54km S of Salton City, CAFri, Jul 10, 8:39 PM PDT · 16520 days ago · 6 km deep · 74 km away
20. 1.66km SSW of Salton City, CAFri, Jul 10, 8:27 PM PDT · 16520 days ago · 4 km deep · 74 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci519470. Read Fri, Oct 2, 2026, 4:20 PM UTC.