M2.4 earthquake 9km S of Alpine, CA

Magnitude

2.4 (Mc), micro

Magnitude from

Southern California Seismic Network

Local time

Mon, Sep 17, 1984, 1:15 AM PDT

UTC

1984-09-17 08:15:39 UTC

Depth

8.1 km (5.0 mi), shallow

Epicenter

32.753° N, 116.751° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Depth from

From location

Station coverage gap

156°

Stations used

0

• Alpine, CaliforniaPopulation 14,236. Forecast9 kmS
• El Cajon, CaliforniaPopulation 103,679. Forecast20 kmESE
• Tijuana, MexicoPopulation 1,922,523. Forecast37 kmNE

After

1. 1.821km ESE of Julian, CAMon, Sep 17, 1:50 AM PDT · 15358 days ago · 7 km deep · 43 km away
2. 2.118km NNE of Borrego Springs, CAMon, Sep 17, 4:37 AM PDT · 15357 days ago · 12 km deep · 83 km away
3. 1.514km WNW of Ocotillo, CAMon, Sep 17, 3:04 PM PDT · 15357 days ago · 6 km deep · 59 km away
4. 1.811km SSW of Salton City, CATue, Sep 18, 5:50 AM PDT · 15356 days ago · 6 km deep · 86 km away
5. 1.621km WNW of Imperial, CATue, Sep 18, 9:20 PM PDT · 15356 days ago · 6 km deep · 92 km away
6. 1.620km NE of Pine Valley, CATue, Sep 18, 9:53 PM PDT · 15356 days ago · 9 km deep · 41 km away
7. 1.69km W of Anza, CATue, Sep 18, 10:30 PM PDT · 15356 days ago · 3 km deep · 90 km away
8. 1.611km NE of Julian, CAWed, Sep 19, 1:54 AM PDT · 15356 days ago · 11 km deep · 49 km away
9. 2.446km WSW of Carlsbad, CAWed, Sep 19, 6:03 AM PDT · 15355 days ago · 6 km deep · 100 km away
10. 1.518km NNE of Borrego Springs, CAWed, Sep 19, 7:16 AM PDT · 15355 days ago · 11 km deep · 83 km away
11. 2.228km S of Tecate, B.C., MXThu, Sep 20, 1:54 AM PDT · 15355 days ago · 6 km deep · 51 km away
12. 1.621km ESE of Julian, CAThu, Sep 20, 6:03 AM PDT · 15354 days ago · 3 km deep · 44 km away
13. 1.822km ESE of Julian, CAThu, Sep 20, 11:09 AM PDT · 15354 days ago · 5 km deep · 45 km away
14. 1.921km ESE of Julian, CAThu, Sep 20, 1:50 PM PDT · 15354 days ago · 5 km deep · 42 km away
15. 2.022km NE of Pine Valley, CAThu, Sep 20, 4:50 PM PDT · 15354 days ago · 5 km deep · 42 km away
16. 1.62km W of Borrego Springs, CAThu, Sep 20, 11:22 PM PDT · 15354 days ago · 2 km deep · 65 km away
17. 1.511km WSW of Anza, CAFri, Sep 21, 1:22 AM PDT · 15354 days ago · 1 km deep · 86 km away
18. 1.811km W of Anza, CAFri, Sep 21, 11:20 AM PDT · 15353 days ago · 1 km deep · 87 km away
19. 1.617km ESE of Julian, CAFri, Sep 21, 5:53 PM PDT · 15353 days ago · 1 km deep · 41 km away
20. 2.414km WNW of Ocotillo, CAFri, Sep 21, 11:10 PM PDT · 15353 days ago · 9 km deep · 59 km away
21. 2.014km WNW of Ocotillo, CAFri, Sep 21, 11:40 PM PDT · 15353 days ago · 9 km deep · 59 km away
22. 1.515km WNW of Ocotillo, CASat, Sep 22, 1:56 AM PDT · 15353 days ago · 8 km deep · 58 km away
23. 1.611km W of Anza, CASat, Sep 22, 1:15 PM PDT · 15352 days ago · 3 km deep · 89 km away
24. 2.010km W of Anza, CASat, Sep 22, 6:29 PM PDT · 15352 days ago · 3 km deep · 89 km away
25. 1.821km ESE of Anza, CASat, Sep 22, 8:37 PM PDT · 15352 days ago · 13 km deep · 88 km away
26. 1.610km W of Anza, CASat, Sep 22, 8:43 PM PDT · 15352 days ago · 3 km deep · 88 km away
27. 2.826km SSW of Ocotillo Wells, CASat, Sep 22, 9:27 PM PDT · 15352 days ago · 8 km deep · 49 km away
28. 1.914km S of Borrego Springs, CASun, Sep 23, 12:44 AM PDT · 15352 days ago · 2 km deep · 53 km away
29. 1.815km S of Borrego Springs, CASun, Sep 23, 12:48 AM PDT · 15352 days ago · 5 km deep · 53 km away
30. 1.524km SSW of Ocotillo Wells, CASun, Sep 23, 2:27 AM PDT · 15352 days ago · 7 km deep · 50 km away
31. 2.826km SSW of Ocotillo Wells, CASun, Sep 23, 6:13 AM PDT · 15351 days ago · 7 km deep · 48 km away
32. 2.125km SSW of Ocotillo Wells, CASun, Sep 23, 6:27 AM PDT · 15351 days ago · 7 km deep · 50 km away
33. 2.110km WSW of Anza, CASun, Sep 23, 7:41 AM PDT · 15351 days ago · 4 km deep · 85 km away
34. 1.822km ESE of Julian, CASun, Sep 23, 4:50 PM PDT · 15351 days ago · 9 km deep · 43 km away
35. 1.722km ESE of Julian, CASun, Sep 23, 6:50 PM PDT · 15351 days ago · 5 km deep · 43 km away
36. 2.08km SSW of Borrego Springs, CASun, Sep 23, 8:47 PM PDT · 15351 days ago · 12 km deep · 58 km away
37. 2.226km SSW of Ocotillo Wells, CASun, Sep 23, 10:53 PM PDT · 15351 days ago · 7 km deep · 49 km away
38. 1.721km ESE of Julian, CAMon, Sep 24, 4:42 AM PDT · 15350 days ago · 5 km deep · 43 km away
39. 2.545km WSW of Carlsbad, CAMon, Sep 24, 3:32 PM PDT · 15350 days ago · 6 km deep · 99 km away
40. 2.415km SE of Anza, CAMon, Sep 24, 9:42 PM PDT · 15350 days ago · 10 km deep · 82 km away
41. 1.621km SSE of Salton City, CATue, Sep 25, 2:58 AM PDT · 15350 days ago · 8 km deep · 93 km away
42. 2.221km ESE of Julian, CATue, Sep 25, 10:35 AM PDT · 15349 days ago · 2 km deep · 46 km away
43. 1.622km W of Westmorland, CATue, Sep 25, 10:48 AM PDT · 15349 days ago · 8 km deep · 90 km away
44. 2.411km SW of Salton City, CATue, Sep 25, 5:48 PM PDT · 15349 days ago · 6 km deep · 85 km away
45. 1.815km WNW of Ocotillo, CATue, Sep 25, 6:37 PM PDT · 15349 days ago · 6 km deep · 58 km away
46. 2.042km WSW of Carlsbad, CATue, Sep 25, 8:13 PM PDT · 15349 days ago · 5 km deep · 100 km away
47. 1.725km SSW of Ocotillo Wells, CAWed, Sep 26, 8:06 AM PDT · 15348 days ago · 7 km deep · 54 km away
48. 1.511km W of Anza, CAWed, Sep 26, 11:27 AM PDT · 15348 days ago · 1 km deep · 88 km away
49. 1.522km ESE of Julian, CAWed, Sep 26, 1:30 PM PDT · 15348 days ago · 3 km deep · 44 km away
50. 1.622km SSW of La Quinta, CAThu, Sep 27, 1:16 AM PDT · 15348 days ago · 12 km deep · 87 km away
51. 1.920km ESE of Julian, CAThu, Sep 27, 3:17 AM PDT · 15348 days ago · 1 km deep · 42 km away
52. 2.020km ESE of Julian, CAThu, Sep 27, 3:53 AM PDT · 15348 days ago · 0 km deep · 41 km away
53. 1.920km ESE of Julian, CAThu, Sep 27, 3:59 AM PDT · 15348 days ago · 2 km deep · 41 km away
54. 2.123km WSW of Progreso, B.C., MXThu, Sep 27, 4:31 AM PDT · 15347 days ago · 2 km deep · 93 km away
55. 1.820km ESE of Julian, CAThu, Sep 27, 5:21 AM PDT · 15347 days ago · 5 km deep · 42 km away
56. 2.420km NNE of Pine Valley, CAThu, Sep 27, 5:22 AM PDT · 15347 days ago · 5 km deep · 40 km away
57. 2.15km WSW of Ocotillo, CAThu, Sep 27, 1:11 PM PDT · 15347 days ago · 9 km deep · 66 km away
58. 2.421km ESE of Julian, CAThu, Sep 27, 3:07 PM PDT · 15347 days ago · 5 km deep · 41 km away
59. 1.86km SE of Julian, CAThu, Sep 27, 3:41 PM PDT · 15347 days ago · 16 km deep · 37 km away
60. 1.521km SSW of La Quinta, CAThu, Sep 27, 11:07 PM PDT · 15347 days ago · 10 km deep · 89 km away

The first 60 of 189.

Before

1. 2.136km W of La Jolla, CASun, Sep 16, 11:52 PM PDT · 15358 days ago · 5 km deep · 86 km away
2. 1.74km SW of Salton City, CASun, Sep 16, 1:35 AM PDT · 15359 days ago · 1 km deep · 92 km away
3. 1.619km N of Borrego Springs, CASat, Sep 15, 2:01 PM PDT · 15359 days ago · 12 km deep · 84 km away
4. 1.610km SW of Salton City, CASat, Sep 15, 8:10 AM PDT · 15359 days ago · 6 km deep · 86 km away
5. 1.814km WNW of Ocotillo, CAFri, Sep 14, 9:08 PM PDT · 15360 days ago · 10 km deep · 59 km away
6. 1.98km S of Warner Springs, CAFri, Sep 14, 9:07 PM PDT · 15360 days ago · 5 km deep · 51 km away
7. 1.610km N of Anza, CAFri, Sep 14, 5:53 PM PDT · 15360 days ago · 12 km deep · 100 km away
8. 1.82km W of Borrego Springs, CAFri, Sep 14, 2:23 PM PDT · 15360 days ago · 2 km deep · 65 km away
9. 2.443km WSW of Carlsbad, CAFri, Sep 14, 5:26 AM PDT · 15360 days ago · 6 km deep · 98 km away
10. 1.85km NNW of Julian, CAThu, Sep 13, 2:57 PM PDT · 15361 days ago · 16 km deep · 42 km away
11. 1.514km SE of Anza, CAThu, Sep 13, 10:13 AM PDT · 15361 days ago · 12 km deep · 82 km away
12. 1.88km W of Anza, CAThu, Sep 13, 1:10 AM PDT · 15362 days ago · 2 km deep · 88 km away
13. 1.511km SW of Ocotillo Wells, CAWed, Sep 12, 5:18 PM PDT · 15362 days ago · 5 km deep · 62 km away
14. 1.620km ESE of Julian, CAWed, Sep 12, 2:46 PM PDT · 15362 days ago · 5 km deep · 43 km away
15. 1.69km W of Anza, CAWed, Sep 12, 1:25 PM PDT · 15362 days ago · 2 km deep · 89 km away
16. 1.616km SSW of Oasis, CAWed, Sep 12, 12:02 PM PDT · 15362 days ago · 10 km deep · 84 km away
17. 1.621km SSW of La Quinta, CAWed, Sep 12, 5:22 AM PDT · 15362 days ago · 9 km deep · 88 km away
18. 1.65km W of Ocotillo, CAWed, Sep 12, 5:09 AM PDT · 15362 days ago · 7 km deep · 66 km away
19. 2.121km NNE of Pine Valley, CAWed, Sep 12, 1:39 AM PDT · 15363 days ago · 5 km deep · 41 km away
20. 1.725km SSW of Ocotillo Wells, CATue, Sep 11, 11:47 PM PDT · 15363 days ago · 7 km deep · 50 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci50814. Read Sun, Oct 4, 2026, 10:40 PM UTC.