M1.7 earthquake 14km S of Anza, CA

Magnitude

1.7 (Mc), micro

Magnitude from

Southern California Seismic Network

Local time

Fri, Jul 28, 1978, 1:06 PM PDT

UTC

1978-07-28 20:06:50 UTC

Depth

12.7 km (7.9 mi), shallow

Epicenter

33.430° N, 116.701° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.4 km horizontally, 1.6 km in depth

Depth from

From location

Station coverage gap

75°

Stations used

9

• Anza, CaliforniaPopulation 3,014. Forecast14 kmS
• Valle Vista, CaliforniaPopulation 14,578. Forecast40 kmSSE
• Temecula, CaliforniaPopulation 110,003. Forecast42 kmE
• San Diego, CaliforniaPopulation 1,404,452. Forecast90 kmNNE

After

1. 1.58km WSW of Anza, CAFri, Jul 28, 10:32 PM PDT · 17597 days ago · 8 km deep · 11 km away
2. 1.514km S of Anza, CASat, Jul 29, 2:31 AM PDT · 17597 days ago · 15 km deep · 0 km away
3. 2.32km WNW of Borrego Springs, CASat, Jul 29, 11:18 AM PDT · 17596 days ago · 5 km deep · 33 km away
4. 1.62km NW of Borrego Springs, CASat, Jul 29, 5:08 PM PDT · 17596 days ago · 5 km deep · 34 km away
5. 1.511km N of Julian, CASat, Jul 29, 7:27 PM PDT · 17596 days ago · 14 km deep · 30 km away
6. 2.76km SSW of Idyllwild, CASun, Jul 30, 6:39 AM PDT · 17596 days ago · 17 km deep · 30 km away
7. 1.64km SSW of Idyllwild, CASun, Jul 30, 7:05 AM PDT · 17596 days ago · 18 km deep · 31 km away
8. 1.65km SSW of Idyllwild, CASun, Jul 30, 7:14 AM PDT · 17596 days ago · 19 km deep · 31 km away
9. 1.94km SSW of Idyllwild, CASun, Jul 30, 7:42 AM PDT · 17596 days ago · 17 km deep · 30 km away
10. 1.814km NE of Borrego Springs, CASun, Jul 30, 7:49 AM PDT · 17596 days ago · 11 km deep · 39 km away
11. 1.64km SW of Big Bear Lake, CASun, Jul 30, 8:41 AM PDT · 17595 days ago · 8 km deep · 90 km away
12. 1.611km SSE of Anza, CASun, Jul 30, 6:08 PM PDT · 17595 days ago · 6 km deep · 9 km away
13. 1.513km ESE of Anza, CASun, Jul 30, 10:57 PM PDT · 17595 days ago · 14 km deep · 17 km away
14. 1.76km NNW of Ocotillo Wells, CAMon, Jul 31, 4:05 AM PDT · 17595 days ago · 6 km deep · 57 km away
15. 2.23km WSW of Yucaipa, CAMon, Jul 31, 1:37 PM PDT · 17594 days ago · 12 km deep · 74 km away
16. 3.022km W of Westmorland, CATue, Aug 1, 11:31 PM PDT · 17593 days ago · 2 km deep · 91 km away
17. 1.55km SSE of Big Bear City, CAWed, Aug 2, 12:42 AM PDT · 17593 days ago · 10 km deep · 88 km away
18. 1.620km WSW of Westmorland, CAWed, Aug 2, 1:53 AM PDT · 17593 days ago · 3 km deep · 94 km away
19. 1.711km SW of Idyllwild, CAWed, Aug 2, 7:07 AM PDT · 17593 days ago · 13 km deep · 26 km away
20. 2.53km SSE of Redlands, CAWed, Aug 2, 12:19 PM PDT · 17592 days ago · 15 km deep · 80 km away
21. 2.112km N of Borrego Springs, CAWed, Aug 2, 4:32 PM PDT · 17592 days ago · 13 km deep · 30 km away
22. 1.56km W of Anza, CAWed, Aug 2, 6:16 PM PDT · 17592 days ago · 3 km deep · 14 km away
23. 3.210km SSE of Idyllwild, CAWed, Aug 2, 9:30 PM PDT · 17592 days ago · 21 km deep · 25 km away
24. 1.83km SW of Big Bear Lake, CAWed, Aug 2, 10:55 PM PDT · 17592 days ago · 8 km deep · 90 km away
25. 1.56km SW of Idyllwild, CAWed, Aug 2, 11:50 PM PDT · 17592 days ago · 17 km deep · 31 km away
26. 1.77km N of Idyllwild, CAThu, Aug 3, 10:00 AM PDT · 17591 days ago · 18 km deep · 41 km away
27. 1.713km W of Niland, CAThu, Aug 3, 5:23 PM PDT · 17591 days ago · 5 km deep · 100 km away
28. 1.912km W of Westmorland, CAThu, Aug 3, 7:37 PM PDT · 17591 days ago · 5 km deep · 99 km away
29. 1.821km ESE of Anza, CAFri, Aug 4, 2:58 AM PDT · 17591 days ago · 7 km deep · 22 km away
30. 1.518km W of Westmorland, CAFri, Aug 4, 3:56 PM PDT · 17590 days ago · 6 km deep · 92 km away
31. 1.78km NNE of Borrego Springs, CASat, Aug 5, 2:35 AM PDT · 17590 days ago · 12 km deep · 35 km away
32. 1.916km SE of Big Bear City, CASat, Aug 5, 4:15 PM PDT · 17589 days ago · 2 km deep · 80 km away
33. 1.77km NE of Beaumont, CASun, Aug 6, 7:42 AM PDT · 17589 days ago · 4 km deep · 64 km away
34. 1.513km SE of Warner Springs, CASun, Aug 6, 4:16 PM PDT · 17588 days ago · 11 km deep · 30 km away
35. 1.87km WSW of Calimesa, CASun, Aug 6, 4:57 PM PDT · 17588 days ago · 19 km deep · 71 km away
36. 2.116km SE of Big Bear City, CASun, Aug 6, 8:02 PM PDT · 17588 days ago · 0 km deep · 80 km away
37. 1.621km ESE of Anza, CAMon, Aug 7, 12:38 AM PDT · 17588 days ago · 14 km deep · 20 km away
38. 1.83km SE of San Jacinto, CAMon, Aug 7, 6:00 AM PDT · 17588 days ago · 6 km deep · 43 km away
39. 1.915km E of Ocotillo Wells, CAMon, Aug 7, 11:35 AM PDT · 17587 days ago · 9 km deep · 76 km away
40. 1.611km NE of Coachella, CAMon, Aug 7, 1:59 PM PDT · 17587 days ago · 6 km deep · 67 km away
41. 1.915km E of Ocotillo Wells, CAMon, Aug 7, 2:59 PM PDT · 17587 days ago · 12 km deep · 76 km away
42. 2.015km NNE of Borrego Springs, CAMon, Aug 7, 5:53 PM PDT · 17587 days ago · 2 km deep · 36 km away
43. 1.58km SSW of Bombay Beach, CAMon, Aug 7, 7:02 PM PDT · 17587 days ago · 5 km deep · 88 km away
44. 1.613km N of Borrego Springs, CAMon, Aug 7, 7:56 PM PDT · 17587 days ago · 14 km deep · 29 km away
45. 1.810km NE of Desert Hot Springs, CAMon, Aug 7, 11:24 PM PDT · 17587 days ago · 7 km deep · 70 km away
46. 2.522km NE of Pine Valley, CATue, Aug 8, 5:08 PM PDT · 17586 days ago · 6 km deep · 65 km away
47. 2.422km ENE of Pine Valley, CATue, Aug 8, 5:09 PM PDT · 17586 days ago · 6 km deep · 65 km away
48. 1.912km N of Borrego Springs, CATue, Aug 8, 6:04 PM PDT · 17586 days ago · 12 km deep · 32 km away
49. 1.611km N of Borrego Springs, CATue, Aug 8, 6:29 PM PDT · 17586 days ago · 13 km deep · 34 km away
50. 1.66km WSW of Idyllwild, CATue, Aug 8, 11:57 PM PDT · 17586 days ago · 16 km deep · 32 km away
51. 2.52km NNW of Palomar Observatory, CAWed, Aug 9, 12:27 AM PDT · 17586 days ago · 7 km deep · 17 km away
52. 1.61km S of Loma Linda, CAWed, Aug 9, 10:15 AM PDT · 17585 days ago · 18 km deep · 86 km away
53. 2.14km SE of Temecula, CAWed, Aug 9, 11:02 AM PDT · 17585 days ago · 4 km deep · 39 km away
54. 2.116km SE of Big Bear City, CAWed, Aug 9, 2:08 PM PDT · 17585 days ago · 2 km deep · 80 km away
55. 1.516km NNW of Ocotillo, CAWed, Aug 9, 2:42 PM PDT · 17585 days ago · 11 km deep · 86 km away
56. 1.614km N of Borrego Springs, CAThu, Aug 10, 8:38 AM PDT · 17584 days ago · 13 km deep · 31 km away
57. 2.220km NW of Yucca Valley, CAThu, Aug 10, 10:37 AM PDT · 17584 days ago · 11 km deep · 90 km away
58. 1.814km ENE of Borrego Springs, CAThu, Aug 10, 12:50 PM PDT · 17584 days ago · 8 km deep · 44 km away
59. 2.19km S of Idyllwild, CAFri, Aug 11, 1:57 AM PDT · 17584 days ago · 15 km deep · 26 km away
60. 1.68km N of Julian, CAFri, Aug 11, 7:13 AM PDT · 17584 days ago · 6 km deep · 32 km away

The first 60 of 163.

Before

1. 1.86km NW of Julian, CAThu, Jul 27, 9:36 PM PDT · 17598 days ago · 8 km deep · 35 km away
2. 1.88km SSW of Salton City, CAThu, Jul 27, 3:33 PM PDT · 17598 days ago · 6 km deep · 70 km away
3. 2.58km SSW of Salton City, CAThu, Jul 27, 3:26 PM PDT · 17598 days ago · 8 km deep · 70 km away
4. 2.38km SSW of Salton City, CAThu, Jul 27, 3:26 PM PDT · 17598 days ago · 8 km deep · 70 km away
5. 1.58km NNE of Banning, CAWed, Jul 26, 11:24 PM PDT · 17599 days ago · 10 km deep · 64 km away
6. 2.05km SSE of Banning, CAWed, Jul 26, 9:09 PM PDT · 17599 days ago · 15 km deep · 52 km away
7. 2.110km SSW of Morongo Valley, CAWed, Jul 26, 4:50 PM PDT · 17599 days ago · 17 km deep · 60 km away
8. 2.78km N of Borrego Springs, CAWed, Jul 26, 2:32 PM PDT · 17599 days ago · 14 km deep · 33 km away
9. 1.59km ENE of Big Bear City, CAWed, Jul 26, 1:06 PM PDT · 17599 days ago · 11 km deep · 97 km away
10. 1.621km ESE of Anza, CAWed, Jul 26, 4:01 AM PDT · 17600 days ago · 13 km deep · 22 km away
11. 1.822km ESE of Anza, CATue, Jul 25, 10:41 AM PDT · 17600 days ago · 15 km deep · 23 km away
12. 1.514km S of Anza, CAMon, Jul 24, 11:33 AM PDT · 17601 days ago · 14 km deep · 1 km away
13. 1.78km SSE of Big Bear Lake, CAMon, Jul 24, 12:45 AM PDT · 17602 days ago · 12 km deep · 84 km away
14. 1.66km S of Redlands, CASun, Jul 23, 9:50 AM PDT · 17602 days ago · 15 km deep · 78 km away
15. 2.024km W of Westmorland, CASun, Jul 23, 3:07 AM PDT · 17603 days ago · 3 km deep · 87 km away
16. 1.717km E of Julian, CASat, Jul 22, 9:00 PM PDT · 17603 days ago · 15 km deep · 48 km away
17. 2.517km NW of Yucca Valley, CASat, Jul 22, 2:14 PM PDT · 17603 days ago · 7 km deep · 89 km away
18. 1.721km ESE of Anza, CASat, Jul 22, 12:18 PM PDT · 17603 days ago · 14 km deep · 23 km away
19. 1.52km NW of Borrego Springs, CASat, Jul 22, 6:41 AM PDT · 17604 days ago · 5 km deep · 34 km away
20. 1.630km W of Desert Center, CASat, Jul 22, 4:01 AM PDT · 17604 days ago · 9 km deep · 98 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci3340974. Read Fri, Oct 2, 2026, 2:36 AM UTC.