M1.6 earthquake 10km SW of Anza, CA

Magnitude

1.6 (Mh), micro

Magnitude from

Southern California Seismic Network

Local time

Mon, Sep 18, 1978, 9:50 PM PDT

UTC

1978-09-19 04:50:14 UTC

Depth

10.5 km (6.5 mi), shallow

Epicenter

33.503° N, 116.759° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.6 km horizontally, 3.8 km in depth

Depth from

From location

Station coverage gap

139°

Stations used

6

• Anza, CaliforniaPopulation 3,014. Forecast10 kmSW
• Valle Vista, CaliforniaPopulation 14,578. Forecast30 kmSSE
• Temecula, CaliforniaPopulation 110,003. Forecast36 kmE
• San Diego, CaliforniaPopulation 1,404,452. Forecast95 kmNNE

After

1. 1.74km NNE of Joshua Tree, CATue, Sep 19, 1:58 PM PDT · 17547 days ago · 1 km deep · 86 km away
2. 1.64km NNE of Joshua Tree, CAWed, Sep 20, 3:04 AM PDT · 17547 days ago · 2 km deep · 86 km away
3. 1.915km SE of Anza, CAWed, Sep 20, 7:13 AM PDT · 17547 days ago · 12 km deep · 20 km away
4. 1.68km S of Idyllwild, CAWed, Sep 20, 9:49 PM PDT · 17546 days ago · 16 km deep · 18 km away
5. 2.24km ENE of Running Springs, CAThu, Sep 21, 2:15 PM PDT · 17545 days ago · 2 km deep · 85 km away
6. 1.93km ENE of Running Springs, CAThu, Sep 21, 2:40 PM PDT · 17545 days ago · 1 km deep · 85 km away
7. 1.94km ENE of Running Springs, CAThu, Sep 21, 2:54 PM PDT · 17545 days ago · 2 km deep · 85 km away
8. 1.55km ENE of Running Springs, CAFri, Sep 22, 4:21 AM PDT · 17545 days ago · 4 km deep · 85 km away
9. 1.54km ENE of Running Springs, CAFri, Sep 22, 4:50 AM PDT · 17545 days ago · 2 km deep · 84 km away
10. 1.94km ENE of Running Springs, CAFri, Sep 22, 4:50 AM PDT · 17545 days ago · 2 km deep · 85 km away
11. 1.84km ENE of Running Springs, CAFri, Sep 22, 5:04 AM PDT · 17545 days ago · 0 km deep · 85 km away
12. 1.75km SSE of Banning, CAFri, Sep 22, 9:14 AM PDT · 17545 days ago · 14 km deep · 43 km away
13. 1.614km S of Anza, CAFri, Sep 22, 11:29 PM PDT · 17544 days ago · 14 km deep · 10 km away
14. 1.714km N of Borrego Springs, CASat, Sep 23, 2:09 AM PDT · 17544 days ago · 10 km deep · 37 km away
15. 1.710km NE of Indio, CASat, Sep 23, 3:42 AM PDT · 17544 days ago · 0 km deep · 66 km away
16. 1.823km NNW of Borrego Springs, CASat, Sep 23, 7:42 AM PDT · 17544 days ago · 7 km deep · 31 km away
17. 1.84km ENE of Running Springs, CASat, Sep 23, 9:31 AM PDT · 17544 days ago · 2 km deep · 85 km away
18. 2.14km ENE of Running Springs, CASat, Sep 23, 4:06 PM PDT · 17543 days ago · 2 km deep · 86 km away
19. 1.64km ENE of Running Springs, CASat, Sep 23, 4:14 PM PDT · 17543 days ago · 2 km deep · 85 km away
20. 1.917km NE of Coachella, CASat, Sep 23, 6:04 PM PDT · 17543 days ago · 0 km deep · 74 km away
21. 1.618km ESE of Anza, CASat, Sep 23, 6:32 PM PDT · 17543 days ago · 13 km deep · 24 km away
22. 1.63km NNW of San Jacinto, CASat, Sep 23, 8:08 PM PDT · 17543 days ago · 13 km deep · 39 km away
23. 1.810km SE of Anza, CASat, Sep 23, 8:56 PM PDT · 17543 days ago · 7 km deep · 14 km away
24. 1.88km WNW of Lake Henshaw, CASat, Sep 23, 10:43 PM PDT · 17543 days ago · 13 km deep · 26 km away
25. 1.74km NE of Running Springs, CASun, Sep 24, 1:58 AM PDT · 17543 days ago · 6 km deep · 86 km away
26. 1.610km SE of Ocotillo Wells, CASun, Sep 24, 2:31 AM PDT · 17543 days ago · 15 km deep · 80 km away
27. 1.724km NNW of Borrego Springs, CASun, Sep 24, 5:49 AM PDT · 17543 days ago · 8 km deep · 30 km away
28. 1.513km NE of Joshua Tree, CASun, Sep 24, 8:43 AM PDT · 17543 days ago · 9 km deep · 93 km away
29. 1.613km NE of Borrego Springs, CASun, Sep 24, 11:02 AM PDT · 17543 days ago · 12 km deep · 47 km away
30. 1.610km SW of Morongo Valley, CASun, Sep 24, 11:45 AM PDT · 17543 days ago · 9 km deep · 53 km away
31. 1.719km ESE of Anza, CASun, Sep 24, 4:09 PM PDT · 17542 days ago · 9 km deep · 26 km away
32. 1.76km E of Rancho Cucamonga, CASun, Sep 24, 5:21 PM PDT · 17542 days ago · 10 km deep · 98 km away
33. 2.54km ENE of Running Springs, CAMon, Sep 25, 5:35 AM PDT · 17542 days ago · 2 km deep · 85 km away
34. 1.75km ENE of Running Springs, CAMon, Sep 25, 5:43 AM PDT · 17542 days ago · 11 km deep · 86 km away
35. 1.714km SE of Big Bear City, CAMon, Sep 25, 5:48 AM PDT · 17542 days ago · 2 km deep · 75 km away
36. 1.614km NNE of Borrego Springs, CAMon, Sep 25, 7:22 AM PDT · 17542 days ago · 14 km deep · 44 km away
37. 2.04km ENE of Running Springs, CAMon, Sep 25, 7:41 AM PDT · 17542 days ago · 2 km deep · 85 km away
38. 2.013km NE of Trabuco Canyon, CAMon, Sep 25, 8:40 AM PDT · 17542 days ago · 5 km deep · 74 km away
39. 1.811km NNW of Anza, CAMon, Sep 25, 1:37 PM PDT · 17541 days ago · 14 km deep · 16 km away
40. 1.524km W of Westmorland, CATue, Sep 26, 2:06 AM PDT · 17541 days ago · 15 km deep · 95 km away
41. 1.918km ESE of Anza, CATue, Sep 26, 10:43 AM PDT · 17541 days ago · 1 km deep · 25 km away
42. 1.79km ENE of Borrego Springs, CATue, Sep 26, 5:25 PM PDT · 17540 days ago · 14 km deep · 51 km away
43. 1.67km NNW of Big Bear City, CAWed, Sep 27, 2:17 AM PDT · 17540 days ago · 6 km deep · 91 km away
44. 1.72km ESE of Loma Linda, CAWed, Sep 27, 2:52 PM PDT · 17539 days ago · 16 km deep · 74 km away
45. 1.82km NW of Fontana, CAThu, Sep 28, 11:09 AM PDT · 17539 days ago · 6 km deep · 95 km away
46. 2.311km NE of Cabazon, CAThu, Sep 28, 1:55 PM PDT · 17538 days ago · 14 km deep · 55 km away
47. 3.824km SSW of Ocotillo Wells, CAThu, Sep 28, 4:13 PM PDT · 17538 days ago · 16 km deep · 78 km away
48. 2.226km SSW of Ocotillo Wells, CAThu, Sep 28, 4:16 PM PDT · 17538 days ago · 15 km deep · 77 km away
49. 1.924km SSW of Ocotillo Wells, CAThu, Sep 28, 4:20 PM PDT · 17538 days ago · 11 km deep · 75 km away
50. 1.824km SSW of Ocotillo Wells, CAThu, Sep 28, 4:26 PM PDT · 17538 days ago · 12 km deep · 76 km away
51. 1.824km SSW of Ocotillo Wells, CAThu, Sep 28, 4:29 PM PDT · 17538 days ago · 7 km deep · 75 km away
52. 1.824km SSW of Ocotillo Wells, CAThu, Sep 28, 4:30 PM PDT · 17538 days ago · 13 km deep · 76 km away
53. 1.724km SSW of Ocotillo Wells, CAThu, Sep 28, 4:31 PM PDT · 17538 days ago · 7 km deep · 76 km away
54. 1.824km SSW of Ocotillo Wells, CAThu, Sep 28, 4:32 PM PDT · 17538 days ago · 6 km deep · 75 km away
55. 1.624km SSW of Ocotillo Wells, CAThu, Sep 28, 4:53 PM PDT · 17538 days ago · 6 km deep · 75 km away
56. 2.223km SSW of Ocotillo Wells, CAThu, Sep 28, 4:54 PM PDT · 17538 days ago · 15 km deep · 76 km away
57. 2.024km SSW of Ocotillo Wells, CAThu, Sep 28, 5:17 PM PDT · 17538 days ago · 15 km deep · 77 km away
58. 1.824km SSW of Ocotillo Wells, CAThu, Sep 28, 5:36 PM PDT · 17538 days ago · 6 km deep · 76 km away
59. 1.524km SSW of Ocotillo Wells, CAThu, Sep 28, 5:37 PM PDT · 17538 days ago · 7 km deep · 76 km away
60. 1.624km SSW of Ocotillo Wells, CAThu, Sep 28, 6:30 PM PDT · 17538 days ago · 6 km deep · 76 km away

The first 60 of 165.

Before

1. 2.25km N of Banning, CAMon, Sep 18, 1:03 PM PDT · 17548 days ago · 18 km deep · 53 km away
2. 1.63km WNW of Muscoy, CAMon, Sep 18, 11:40 AM PDT · 17549 days ago · 13 km deep · 93 km away
3. 2.013km NNW of Borrego Springs, CAMon, Sep 18, 8:39 AM PDT · 17549 days ago · 9 km deep · 34 km away
4. 1.79km NE of Indio, CAMon, Sep 18, 5:31 AM PDT · 17549 days ago · 7 km deep · 65 km away
5. 1.53km WSW of Joshua Tree, CASun, Sep 17, 11:53 PM PDT · 17549 days ago · 11 km deep · 79 km away
6. 1.95km ENE of Running Springs, CASun, Sep 17, 7:23 PM PDT · 17549 days ago · 3 km deep · 85 km away
7. 2.09km NE of Indio, CASun, Sep 17, 3:45 PM PDT · 17549 days ago · 10 km deep · 65 km away
8. 1.97km WSW of Garnet, CASat, Sep 16, 11:02 PM PDT · 17550 days ago · 14 km deep · 43 km away
9. 2.25km N of Banning, CASat, Sep 16, 10:06 AM PDT · 17551 days ago · 18 km deep · 53 km away
10. 2.415km E of Aguanga, CASat, Sep 16, 6:59 AM PDT · 17551 days ago · 14 km deep · 11 km away
11. 1.65km W of San Jacinto, CASat, Sep 16, 4:51 AM PDT · 17551 days ago · 13 km deep · 39 km away
12. 1.95km WSW of Big Bear Lake, CAFri, Sep 15, 9:39 PM PDT · 17551 days ago · 10 km deep · 82 km away
13. 1.914km SSW of Borrego Springs, CAFri, Sep 15, 6:50 PM PDT · 17551 days ago · 8 km deep · 49 km away
14. 1.818km S of La Quinta, CAFri, Sep 15, 9:20 AM PDT · 17552 days ago · 12 km deep · 40 km away
15. 1.619km ESE of Anza, CAFri, Sep 15, 3:07 AM PDT · 17552 days ago · 4 km deep · 26 km away
16. 1.59km NNE of Julian, CAThu, Sep 14, 11:49 PM PDT · 17552 days ago · 6 km deep · 42 km away
17. 1.65km NNE of Cabazon, CAThu, Sep 14, 10:35 PM PDT · 17552 days ago · 8 km deep · 51 km away
18. 1.712km NNE of Cabazon, CAThu, Sep 14, 8:24 PM PDT · 17552 days ago · 12 km deep · 57 km away
19. 1.917km NNW of Borrego Springs, CAThu, Sep 14, 9:28 AM PDT · 17553 days ago · 12 km deep · 31 km away
20. 2.13km N of Valle Vista, CAThu, Sep 14, 4:40 AM PDT · 17553 days ago · 9 km deep · 33 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci3341864. Read Mon, Oct 5, 2026, 6:16 AM UTC.