M1.8 earthquake 5km SW of Alpine, CA

Magnitude

1.8 (mc), micro

Local time

Sun, Apr 7, 1985, 12:33 AM PST

UTC

1985-04-07 08:33:04 UTC

Depth

5.4 km (3.4 mi), shallow

Epicenter

32.805° N, 116.805° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Depth from

Operator assigned

Station coverage gap

136°

Stations used

0

• Harbison Canyon, CaliforniaPopulation 3,841. Forecast3 kmSE
• Alpine, CaliforniaPopulation 14,236. Forecast5 kmSW
• El Cajon, CaliforniaPopulation 103,679. Forecast15 kmE
• San Diego, CaliforniaPopulation 1,404,452. Forecast35 kmENE

After

1. 1.818km SW of La Quinta, CASun, Apr 7, 1:13 PM PST · 15150 days ago · 10 km deep · 88 km away
2. 2.022km ESE of Julian, CASun, Apr 7, 2:18 PM PST · 15150 days ago · 5 km deep · 47 km away
3. 1.812km NNE of Borrego Springs, CASun, Apr 7, 7:59 PM PST · 15150 days ago · 10 km deep · 75 km away
4. 1.910km N of Lake Henshaw, CASun, Apr 7, 8:17 PM PST · 15150 days ago · 12 km deep · 58 km away
5. 1.610km N of Lake Henshaw, CASun, Apr 7, 9:19 PM PST · 15150 days ago · 11 km deep · 59 km away
6. 2.92km SSW of Anza, CAMon, Apr 8, 8:13 AM PST · 15149 days ago · 8 km deep · 82 km away
7. 1.81km ESE of Anza, CAMon, Apr 8, 9:56 AM PST · 15149 days ago · 10 km deep · 84 km away
8. 1.91km SSE of Anza, CAMon, Apr 8, 10:24 AM PST · 15149 days ago · 9 km deep · 83 km away
9. 2.122km ESE of Julian, CAMon, Apr 8, 11:41 AM PST · 15149 days ago · 5 km deep · 46 km away
10. 2.421km ESE of Julian, CAMon, Apr 8, 4:52 PM PST · 15149 days ago · 5 km deep · 45 km away
11. 1.82km SE of Anza, CAMon, Apr 8, 4:58 PM PST · 15149 days ago · 10 km deep · 83 km away
12. 1.522km ESE of Julian, CAMon, Apr 8, 5:10 PM PST · 15149 days ago · 5 km deep · 46 km away
13. 2.019km SSW of Ocotillo, CAMon, Apr 8, 9:22 PM PST · 15149 days ago · 5 km deep · 70 km away
14. 1.912km NNW of Borrego Springs, CATue, Apr 9, 1:51 PM PST · 15148 days ago · 10 km deep · 72 km away
15. 1.510km NNW of Anza, CAWed, Apr 10, 1:54 AM PST · 15147 days ago · 16 km deep · 93 km away
16. 2.011km WSW of Anza, CAWed, Apr 10, 10:46 AM PST · 15147 days ago · 1 km deep · 81 km away
17. 1.77km NNW of Anza, CAThu, Apr 11, 3:35 AM PST · 15146 days ago · 5 km deep · 89 km away
18. 1.621km SW of La Quinta, CAThu, Apr 11, 6:49 AM PST · 15146 days ago · 7 km deep · 86 km away
19. 1.612km W of Ocotillo Wells, CAThu, Apr 11, 8:31 AM PST · 15146 days ago · 11 km deep · 64 km away
20. 1.721km ESE of Julian, CAThu, Apr 11, 12:38 PM PST · 15146 days ago · 5 km deep · 46 km away
21. 1.822km ESE of Julian, CAThu, Apr 11, 5:05 PM PST · 15146 days ago · 8 km deep · 48 km away
22. 1.610km W of Anza, CASat, Apr 13, 12:14 AM PST · 15144 days ago · -1 km deep · 82 km away
23. 1.520km ESE of Anza, CASat, Apr 13, 7:11 AM PST · 15144 days ago · 14 km deep · 81 km away
24. 1.921km E of Julian, CASat, Apr 13, 1:46 PM PST · 15144 days ago · 2 km deep · 48 km away
25. 2.122km ESE of Julian, CASat, Apr 13, 11:55 PM PST · 15143 days ago · 5 km deep · 47 km away
26. 1.612km W of Anza, CASun, Apr 14, 3:27 AM PST · 15143 days ago · 2 km deep · 83 km away
27. 1.50km S of Anza, CASun, Apr 14, 3:29 PM PST · 15143 days ago · 9 km deep · 84 km away
28. 1.920km SSW of San Clemente, CASun, Apr 14, 6:04 PM PST · 15143 days ago · 5 km deep · 99 km away
29. 2.310km S of Idyllwild, CASun, Apr 14, 10:02 PM PST · 15143 days ago · 12 km deep · 94 km away
30. 2.018km WNW of Progreso, B.C., MXMon, Apr 15, 12:29 AM PST · 15142 days ago · 3 km deep · 99 km away
31. 1.823km ESE of Anza, CAMon, Apr 15, 1:49 AM PST · 15142 days ago · 4 km deep · 82 km away
32. 2.031km S of Tecate, B.C., MXMon, Apr 15, 5:53 AM PST · 15142 days ago · 6 km deep · 61 km away
33. 2.21km S of Anza, CATue, Apr 16, 1:26 AM PST · 15141 days ago · 8 km deep · 83 km away
34. 1.821km NNW of Borrego Springs, CATue, Apr 16, 3:52 AM PST · 15141 days ago · 10 km deep · 76 km away
35. 2.05km W of Chula Vista, CATue, Apr 16, 5:31 AM PST · 15141 days ago · 5 km deep · 34 km away
36. 2.44km N of Imperial Beach, CATue, Apr 16, 11:02 AM PST · 15141 days ago · 5 km deep · 35 km away
37. 2.642km WSW of Carlsbad, CAWed, Apr 17, 10:33 AM PST · 15140 days ago · 5 km deep · 92 km away
38. 1.621km ESE of Julian, CAWed, Apr 17, 11:21 AM PST · 15140 days ago · 5 km deep · 47 km away
39. 1.822km SSW of La Quinta, CAThu, Apr 18, 6:38 AM PST · 15139 days ago · 12 km deep · 84 km away
40. 2.111km W of Anza, CAThu, Apr 18, 9:39 AM PST · 15139 days ago · 2 km deep · 81 km away
41. 3.014km NW of Ocotillo, CAThu, Apr 18, 1:26 PM PST · 15139 days ago · 6 km deep · 65 km away
42. 3.87km SSW of Primo Tapia, B.C., MXThu, Apr 18, 7:55 PM PST · 15139 days ago · 6 km deep · 72 km away
43. 1.811km NW of Ocotillo Wells, CAFri, Apr 19, 12:32 AM PST · 15138 days ago · 9 km deep · 70 km away
44. 1.621km ESE of Julian, CAFri, Apr 19, 2:06 AM PST · 15138 days ago · 2 km deep · 47 km away
45. 1.91km SE of Anza, CAFri, Apr 19, 6:10 AM PST · 15138 days ago · 9 km deep · 84 km away
46. 2.18km E of Borrego Springs, CAFri, Apr 19, 10:12 AM PST · 15138 days ago · 8 km deep · 70 km away
47. 1.814km ESE of Anza, CAFri, Apr 19, 5:50 PM PST · 15138 days ago · 15 km deep · 81 km away
48. 1.83km SW of Palomar Observatory, CASat, Apr 20, 5:48 AM PST · 15137 days ago · 9 km deep · 60 km away
49. 1.511km W of Anza, CASat, Apr 20, 6:28 AM PST · 15137 days ago · 2 km deep · 83 km away
50. 1.819km N of Borrego Springs, CASat, Apr 20, 8:39 AM PST · 15137 days ago · 11 km deep · 80 km away
51. 1.922km WSW of Ocotillo Wells, CASat, Apr 20, 12:39 PM PST · 15137 days ago · 14 km deep · 51 km away
52. 2.121km ESE of Julian, CASat, Apr 20, 6:55 PM PST · 15137 days ago · 5 km deep · 46 km away
53. 2.06km ESE of Temecula, CASat, Apr 20, 9:46 PM PST · 15137 days ago · 7 km deep · 80 km away
54. 1.79km SW of Anza, CASun, Apr 21, 12:55 AM PST · 15136 days ago · 8 km deep · 77 km away
55. 1.921km WSW of Westmorland, CASun, Apr 21, 8:33 AM PST · 15136 days ago · 5 km deep · 94 km away
56. 1.611km NNE of Aguanga, CASun, Apr 21, 3:16 PM PST · 15136 days ago · 1 km deep · 81 km away
57. 1.97km E of Temecula, CASun, Apr 21, 5:24 PM PST · 15136 days ago · 5 km deep · 80 km away
58. 1.77km ESE of Temecula, CASun, Apr 21, 11:53 PM PST · 15135 days ago · 8 km deep · 79 km away
59. 1.87km SSW of Idyllwild, CAMon, Apr 22, 1:44 AM PST · 15135 days ago · 14 km deep · 97 km away
60. 1.87km S of Idyllwild, CAMon, Apr 22, 1:46 AM PST · 15135 days ago · 13 km deep · 97 km away

The first 60 of 164.

Before

1. 2.218km W of Camp Pendleton South, CASat, Apr 6, 7:11 PM PST · 15151 days ago · 6 km deep · 84 km away
2. 1.822km E of Julian, CASat, Apr 6, 4:08 PM PST · 15151 days ago · 1 km deep · 48 km away
3. 1.59km SSW of Idyllwild, CASat, Apr 6, 12:05 PM PST · 15151 days ago · 17 km deep · 96 km away
4. 1.726km WSW of Westmorland, CASat, Apr 6, 10:29 AM PST · 15151 days ago · 7 km deep · 88 km away
5. 1.612km NNE of Borrego Springs, CASat, Apr 6, 1:02 AM PST · 15151 days ago · 11 km deep · 76 km away
6. 1.613km W of Anza, CAFri, Apr 5, 3:46 PM PST · 15152 days ago · 3 km deep · 86 km away
7. 1.76km WSW of Anza, CAFri, Apr 5, 2:35 PM PST · 15152 days ago · 3 km deep · 82 km away
8. 1.911km NE of Aguanga, CAFri, Apr 5, 1:22 PM PST · 15152 days ago · 0 km deep · 79 km away
9. 1.911km W of Anza, CAFri, Apr 5, 10:49 AM PST · 15152 days ago · 3 km deep · 82 km away
10. 1.77km SSW of Idyllwild, CAFri, Apr 5, 4:20 AM PST · 15152 days ago · 16 km deep · 97 km away
11. 1.92km ESE of Anza, CAThu, Apr 4, 10:18 PM PST · 15152 days ago · 10 km deep · 84 km away
12. 2.333km W of La Jolla, CAThu, Apr 4, 2:43 PM PST · 15153 days ago · 6 km deep · 77 km away
13. 1.711km W of Anza, CAThu, Apr 4, 2:53 AM PST · 15153 days ago · -1 km deep · 83 km away
14. 1.818km ESE of Anza, CAWed, Apr 3, 2:20 AM PST · 15154 days ago · 13 km deep · 85 km away
15. 2.39km N of Lake Henshaw, CATue, Apr 2, 10:23 PM PST · 15154 days ago · 10 km deep · 57 km away
16. 1.624km ESE of Anza, CATue, Apr 2, 1:20 PM PST · 15155 days ago · 8 km deep · 81 km away
17. 1.88km SE of Idyllwild, CATue, Apr 2, 6:35 AM PST · 15155 days ago · 15 km deep · 98 km away
18. 1.98km SSE of Idyllwild, CATue, Apr 2, 5:58 AM PST · 15155 days ago · 15 km deep · 98 km away
19. 1.610km W of Anza, CATue, Apr 2, 4:03 AM PST · 15155 days ago · 4 km deep · 83 km away
20. 1.87km S of Idyllwild, CAMon, Apr 1, 4:26 PM PST · 15156 days ago · 14 km deep · 97 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci63856. Read Tue, Sep 29, 2026, 5:47 PM UTC.