M1.8 earthquake 8km WSW of Anza, CA

Magnitude

1.8 (mc), micro

Local time

Thu, May 18, 1978, 10:57 AM PDT

UTC

1978-05-18 17:57:56 UTC

Depth

7.5 km (4.7 mi), shallow

Epicenter

33.524° N, 116.750° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.5 km horizontally, 4.4 km in depth

Depth from

From location

Station coverage gap

135°

Stations used

9

• Anza, CaliforniaPopulation 3,014. Forecast8 kmWSW
• Valle Vista, CaliforniaPopulation 14,578. Forecast28 kmSSE
• Temecula, CaliforniaPopulation 110,003. Forecast37 kmE
• San Diego, CaliforniaPopulation 1,404,452. Forecast98 kmNNE

After

1. 2.211km N of Cabazon, CAMon, Jun 5, 9:05 PM PDT · 17641 days ago · 11 km deep · 55 km away
2. 1.815km S of Anza, CATue, Jun 6, 12:09 PM PDT · 17640 days ago · 13 km deep · 13 km away
3. 1.516km NE of Borrego Springs, CATue, Jun 6, 4:37 PM PDT · 17640 days ago · 10 km deep · 48 km away
4. 1.618km NNW of Ocotillo Wells, CATue, Jun 6, 5:32 PM PDT · 17640 days ago · 6 km deep · 59 km away
5. 1.814km S of Anza, CATue, Jun 6, 6:58 PM PDT · 17640 days ago · 12 km deep · 12 km away
6. 1.58km ENE of Cabazon, CATue, Jun 6, 11:11 PM PDT · 17640 days ago · 5 km deep · 47 km away
7. 1.717km SSE of Big Bear Lake, CAWed, Jun 7, 1:08 AM PDT · 17640 days ago · 8 km deep · 64 km away
8. 1.611km SE of Anza, CAWed, Jun 7, 6:14 AM PDT · 17639 days ago · 7 km deep · 15 km away
9. 1.710km N of Borrego Springs, CAThu, Jun 8, 8:34 AM PDT · 17638 days ago · 12 km deep · 39 km away
10. 1.56km NNE of Cabazon, CAFri, Jun 9, 6:13 AM PDT · 17637 days ago · 20 km deep · 50 km away
11. 1.87km E of Borrego Springs, CAFri, Jun 9, 10:36 AM PDT · 17637 days ago · 10 km deep · 52 km away
12. 2.13km NNW of San Jacinto, CAFri, Jun 9, 3:47 PM PDT · 17637 days ago · 13 km deep · 38 km away
13. 1.512km NNE of Cabazon, CASat, Jun 10, 5:13 AM PDT · 17637 days ago · 11 km deep · 55 km away
14. 1.812km ESE of Anza, CASat, Jun 10, 6:27 AM PDT · 17636 days ago · 14 km deep · 18 km away
15. 1.85km NE of Cabazon, CASat, Jun 10, 7:58 AM PDT · 17636 days ago · 15 km deep · 47 km away
16. 1.512km NNE of Ocotillo Wells, CASat, Jun 10, 6:12 PM PDT · 17636 days ago · 6 km deep · 67 km away
17. 2.111km SE of Lucerne Valley, CASat, Jun 10, 9:44 PM PDT · 17636 days ago · 1 km deep · 95 km away
18. 1.77km S of Idyllwild, CASat, Jun 10, 11:45 PM PDT · 17636 days ago · 16 km deep · 18 km away
19. 1.94km SSE of Lake Henshaw, CASun, Jun 11, 1:02 AM PDT · 17636 days ago · 6 km deep · 35 km away
20. 1.79km ENE of Aguanga, CASun, Jun 11, 5:49 AM PDT · 17636 days ago · 6 km deep · 5 km away
21. 1.78km SSW of Idyllwild, CASun, Jun 11, 8:41 AM PDT · 17635 days ago · 15 km deep · 17 km away
22. 1.68km WSW of Anza, CASun, Jun 11, 11:55 AM PDT · 17635 days ago · 8 km deep · 0 km away
23. 2.76km SSE of Palomar Observatory, CASun, Jun 11, 1:14 PM PDT · 17635 days ago · 9 km deep · 26 km away
24. 2.28km SE of Valle Vista, CASun, Jun 11, 1:38 PM PDT · 17635 days ago · 14 km deep · 20 km away
25. 2.36km SW of Salton City, CASun, Jun 11, 2:36 PM PDT · 17635 days ago · 3 km deep · 75 km away
26. 2.08km WSW of Anza, CAMon, Jun 12, 10:32 AM PDT · 17634 days ago · 6 km deep · 0 km away
27. 1.67km WSW of Anza, CAMon, Jun 12, 3:42 PM PDT · 17634 days ago · 6 km deep · 1 km away
28. 1.75km SE of Banning, CATue, Jun 13, 8:36 AM PDT · 17633 days ago · 17 km deep · 42 km away
29. 2.214km SE of Anza, CATue, Jun 13, 9:59 AM PDT · 17633 days ago · 8 km deep · 19 km away
30. 2.110km NE of Ocotillo Wells, CATue, Jun 13, 1:49 PM PDT · 17633 days ago · 7 km deep · 72 km away
31. 2.55km SE of Ontario, CATue, Jun 13, 10:59 PM PDT · 17633 days ago · 4 km deep · 95 km away
32. 1.912km SW of Morongo Valley, CAWed, Jun 14, 1:22 AM PDT · 17633 days ago · 8 km deep · 51 km away
33. 1.88km S of Morongo Valley, CAWed, Jun 14, 4:54 AM PDT · 17633 days ago · 8 km deep · 52 km away
34. 2.510km NNE of Ocotillo Wells, CAWed, Jun 14, 5:39 AM PDT · 17633 days ago · 6 km deep · 71 km away
35. 1.822km ESE of Julian, CAWed, Jun 14, 10:24 AM PDT · 17632 days ago · 6 km deep · 66 km away
36. 3.010km NE of Aguanga, CAWed, Jun 14, 12:44 PM PDT · 17632 days ago · 12 km deep · 4 km away
37. 1.86km E of Borrego Springs, CAWed, Jun 14, 4:29 PM PDT · 17632 days ago · 14 km deep · 50 km away
38. 1.610km SSW of Idyllwild, CAThu, Jun 15, 2:07 AM PDT · 17632 days ago · 16 km deep · 16 km away
39. 1.818km ESE of Anza, CAThu, Jun 15, 3:52 AM PDT · 17632 days ago · 11 km deep · 24 km away
40. 1.54km SW of Big Bear Lake, CAFri, Jun 16, 5:13 AM PDT · 17631 days ago · 6 km deep · 79 km away
41. 1.96km SW of Salton City, CAFri, Jun 16, 6:50 AM PDT · 17630 days ago · 6 km deep · 75 km away
42. 1.53km SSE of Loma Linda, CAFri, Jun 16, 12:06 PM PDT · 17630 days ago · 19 km deep · 72 km away
43. 1.915km S of Anza, CAFri, Jun 16, 6:44 PM PDT · 17630 days ago · 12 km deep · 12 km away
44. 1.620km ESE of Anza, CASat, Jun 17, 7:09 PM PDT · 17629 days ago · 9 km deep · 27 km away
45. 1.718km NW of Yucca Valley, CASun, Jun 18, 3:50 AM PDT · 17629 days ago · 7 km deep · 80 km away
46. 1.617km ESE of Anza, CASun, Jun 18, 7:11 PM PDT · 17628 days ago · 11 km deep · 23 km away
47. 1.68km N of Running Springs, CAMon, Jun 19, 3:29 AM PDT · 17628 days ago · 7 km deep · 90 km away
48. 2.04km E of Running Springs, CAMon, Jun 19, 3:14 PM PDT · 17627 days ago · 2 km deep · 82 km away
49. 1.818km NNW of Borrego Springs, CAMon, Jun 19, 11:53 PM PDT · 17627 days ago · 12 km deep · 32 km away
50. 1.52km NNE of Ocotillo Wells, CATue, Jun 20, 6:04 AM PDT · 17626 days ago · 6 km deep · 71 km away
51. 1.59km SW of Idyllwild, CATue, Jun 20, 10:29 PM PDT · 17626 days ago · 15 km deep · 19 km away
52. 2.09km SW of Idyllwild, CATue, Jun 20, 11:25 PM PDT · 17626 days ago · 6 km deep · 18 km away
53. 1.520km ESE of Anza, CAWed, Jun 21, 1:39 AM PDT · 17626 days ago · 8 km deep · 25 km away
54. 2.52km N of San Jacinto, CAWed, Jun 21, 4:26 AM PDT · 17626 days ago · 13 km deep · 37 km away
55. 1.515km N of Borrego Springs, CAWed, Jun 21, 4:35 AM PDT · 17626 days ago · 15 km deep · 39 km away
56. 1.64km NE of Idyllwild, CAWed, Jun 21, 6:13 AM PDT · 17625 days ago · 13 km deep · 28 km away
57. 1.65km N of Beaumont, CAWed, Jun 21, 5:23 PM PDT · 17625 days ago · 15 km deep · 54 km away
58. 2.24km NNW of Lake Henshaw, CAWed, Jun 21, 8:53 PM PDT · 17625 days ago · 12 km deep · 27 km away
59. 2.04km NW of Joshua Tree, CAThu, Jun 22, 2:37 AM PDT · 17625 days ago · 2 km deep · 79 km away
60. 1.69km NNW of Big Bear Lake, CAThu, Jun 22, 11:57 AM PDT · 17624 days ago · 4 km deep · 90 km away

The first 60 of 156.

From the USGS Earthquake Hazards Program and its partner networks, event ci3339521. Read Wed, Sep 23, 2026, 12:27 AM UTC.