M1.9 earthquake 4km SW of Niland, CA

Magnitude

1.9 (mh), micro

Local time

Tue, Apr 28, 1981, 11:44 AM PDT

UTC

1981-04-28 18:44:29 UTC

Depth

2.3 km (1.4 mi), shallow

Epicenter

33.218° N, 115.554° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.5 km horizontally, 0.9 km in depth

Depth from

From location

Station coverage gap

59°

Stations used

17

• Niland, CaliforniaPopulation 1,006. Forecast4 kmSW
• Brawley, CaliforniaPopulation 25,897. Forecast27 kmN
• Mexicali, MexicoPopulation 1,032,686. Forecast66 kmN

After

1. 1.712km SW of Westmorland, CATue, Apr 28, 11:50 AM PDT · 16591 days ago · 11 km deep · 31 km away
2. 1.57km WSW of Westmorland, CATue, Apr 28, 1:19 PM PDT · 16591 days ago · 5 km deep · 26 km away
3. 1.614km WSW of Niland, CATue, Apr 28, 1:26 PM PDT · 16591 days ago · 3 km deep · 10 km away
4. 1.76km N of Westmorland, CATue, Apr 28, 1:30 PM PDT · 16591 days ago · 9 km deep · 15 km away
5. 1.915km WSW of Niland, CATue, Apr 28, 2:58 PM PDT · 16591 days ago · 4 km deep · 11 km away
6. 1.58km NNE of Westmorland, CATue, Apr 28, 3:48 PM PDT · 16591 days ago · 11 km deep · 13 km away
7. 1.76km N of Westmorland, CATue, Apr 28, 5:51 PM PDT · 16591 days ago · 7 km deep · 16 km away
8. 1.56km W of Westmorland, CATue, Apr 28, 6:42 PM PDT · 16591 days ago · 9 km deep · 24 km away
9. 2.05km NNW of Westmorland, CATue, Apr 28, 7:25 PM PDT · 16591 days ago · 5 km deep · 17 km away
10. 1.57km ESE of Niland, CATue, Apr 28, 7:33 PM PDT · 16591 days ago · 4 km deep · 9 km away
11. 1.76km W of Westmorland, CATue, Apr 28, 7:52 PM PDT · 16591 days ago · 9 km deep · 24 km away
12. 2.128km SSW of Ocotillo Wells, CATue, Apr 28, 8:08 PM PDT · 16591 days ago · 12 km deep · 72 km away
13. 1.613km WSW of Niland, CATue, Apr 28, 8:10 PM PDT · 16591 days ago · 6 km deep · 9 km away
14. 2.07km W of Westmorland, CATue, Apr 28, 8:54 PM PDT · 16591 days ago · 10 km deep · 23 km away
15. 1.68km WSW of Calipatria, CATue, Apr 28, 9:31 PM PDT · 16590 days ago · 9 km deep · 13 km away
16. 2.36km WNW of Westmorland, CATue, Apr 28, 10:14 PM PDT · 16590 days ago · 12 km deep · 23 km away
17. 1.813km WSW of Westmorland, CATue, Apr 28, 10:56 PM PDT · 16590 days ago · 10 km deep · 32 km away
18. 1.67km NNE of Westmorland, CATue, Apr 28, 10:56 PM PDT · 16590 days ago · 3 km deep · 14 km away
19. 1.85km S of Niland, CATue, Apr 28, 11:42 PM PDT · 16590 days ago · 7 km deep · 4 km away
20. 1.813km WSW of Niland, CAWed, Apr 29, 12:16 AM PDT · 16590 days ago · 5 km deep · 9 km away
21. 2.36km WSW of Westmorland, CAWed, Apr 29, 2:07 AM PDT · 16590 days ago · 12 km deep · 25 km away
22. 1.82km S of Niland, CAWed, Apr 29, 2:16 AM PDT · 16590 days ago · 6 km deep · 4 km away
23. 1.86km N of Calipatria, CAWed, Apr 29, 3:06 AM PDT · 16590 days ago · 5 km deep · 6 km away
24. 1.67km NE of Calipatria, CAWed, Apr 29, 6:29 AM PDT · 16590 days ago · 4 km deep · 11 km away
25. 2.212km WSW of Westmorland, CAWed, Apr 29, 7:58 AM PDT · 16590 days ago · 12 km deep · 31 km away
26. 1.54km SE of Niland, CAWed, Apr 29, 11:30 AM PDT · 16590 days ago · 8 km deep · 6 km away
27. 1.55km SE of Niland, CAWed, Apr 29, 3:03 PM PDT · 16590 days ago · 6 km deep · 6 km away
28. 2.015km N of Indio, CAWed, Apr 29, 3:19 PM PDT · 16590 days ago · 5 km deep · 94 km away
29. 1.812km WSW of Niland, CAWed, Apr 29, 3:59 PM PDT · 16590 days ago · 8 km deep · 8 km away
30. 2.27km NNE of Calipatria, CAWed, Apr 29, 4:17 PM PDT · 16590 days ago · 5 km deep · 8 km away
31. 1.625km WSW of Westmorland, CAWed, Apr 29, 5:05 PM PDT · 16590 days ago · 8 km deep · 41 km away
32. 1.712km WSW of Niland, CAWed, Apr 29, 5:28 PM PDT · 16590 days ago · 9 km deep · 8 km away
33. 1.514km N of Borrego Springs, CAWed, Apr 29, 5:35 PM PDT · 16590 days ago · 4 km deep · 80 km away
34. 1.811km SW of Westmorland, CAWed, Apr 29, 6:43 PM PDT · 16590 days ago · 5 km deep · 30 km away
35. 1.95km WNW of Westmorland, CAWed, Apr 29, 6:51 PM PDT · 16590 days ago · 11 km deep · 21 km away
36. 1.84km NW of Westmorland, CAWed, Apr 29, 7:57 PM PDT · 16590 days ago · 13 km deep · 19 km away
37. 1.811km WSW of Niland, CAWed, Apr 29, 9:45 PM PDT · 16589 days ago · 8 km deep · 7 km away
38. 2.06km W of Westmorland, CAWed, Apr 29, 10:16 PM PDT · 16589 days ago · 4 km deep · 23 km away
39. 1.77km S of Brawley, CAThu, Apr 30, 3:03 AM PDT · 16589 days ago · 13 km deep · 33 km away
40. 2.16km S of Brawley, CAThu, Apr 30, 4:37 AM PDT · 16589 days ago · 15 km deep · 33 km away
41. 3.06km NNE of Calipatria, CAThu, Apr 30, 5:11 AM PDT · 16589 days ago · 15 km deep · 8 km away
42. 1.56km NE of Calipatria, CAThu, Apr 30, 5:50 AM PDT · 16589 days ago · 4 km deep · 9 km away
43. 1.66km NNE of Calipatria, CAThu, Apr 30, 5:55 AM PDT · 16589 days ago · 8 km deep · 9 km away
44. 1.77km NE of Calipatria, CAThu, Apr 30, 8:06 AM PDT · 16589 days ago · 4 km deep · 10 km away
45. 3.06km NNE of Calipatria, CAThu, Apr 30, 8:17 AM PDT · 16589 days ago · 15 km deep · 8 km away
46. 1.66km NE of Calipatria, CAThu, Apr 30, 8:26 AM PDT · 16589 days ago · 4 km deep · 9 km away
47. 1.76km NE of Westmorland, CAThu, Apr 30, 9:55 AM PDT · 16589 days ago · 9 km deep · 15 km away
48. 1.96km NE of Calipatria, CAThu, Apr 30, 11:58 AM PDT · 16589 days ago · 7 km deep · 9 km away
49. 3.418km ESE of Anza, CAThu, Apr 30, 1:09 PM PDT · 16589 days ago · 14 km deep · 93 km away
50. 1.74km SW of Niland, CAThu, Apr 30, 2:46 PM PDT · 16589 days ago · 2 km deep · 1 km away
51. 1.926km SSW of Ocotillo Wells, CAThu, Apr 30, 4:27 PM PDT · 16589 days ago · 6 km deep · 71 km away
52. 2.77km W of Westmorland, CAThu, Apr 30, 5:33 PM PDT · 16589 days ago · 12 km deep · 23 km away
53. 1.87km WSW of Calipatria, CAThu, Apr 30, 7:03 PM PDT · 16589 days ago · 8 km deep · 13 km away
54. 1.78km WSW of Calipatria, CAThu, Apr 30, 10:14 PM PDT · 16588 days ago · 9 km deep · 13 km away
55. 2.05km WNW of Westmorland, CAFri, May 1, 6:31 AM PDT · 16588 days ago · 4 km deep · 21 km away
56. 1.56km WNW of Westmorland, CAFri, May 1, 7:23 AM PDT · 16588 days ago · 2 km deep · 21 km away
57. 1.56km W of Westmorland, CAFri, May 1, 11:54 AM PDT · 16588 days ago · 11 km deep · 24 km away
58. 1.67km WSW of Calipatria, CAFri, May 1, 12:15 PM PDT · 16588 days ago · 7 km deep · 12 km away
59. 1.98km WSW of Calipatria, CAFri, May 1, 12:34 PM PDT · 16588 days ago · 5 km deep · 13 km away
60. 1.812km WSW of Niland, CAFri, May 1, 2:57 PM PDT · 16588 days ago · 7 km deep · 8 km away

The first 60 of 191.

Before

1. 1.84km SW of Niland, CATue, Apr 28, 11:32 AM PDT · 16591 days ago · 2 km deep · 1 km away
2. 1.66km W of Westmorland, CATue, Apr 28, 11:21 AM PDT · 16591 days ago · 8 km deep · 23 km away
3. 2.07km W of Westmorland, CATue, Apr 28, 11:02 AM PDT · 16591 days ago · 10 km deep · 23 km away
4. 2.213km WSW of Niland, CATue, Apr 28, 10:59 AM PDT · 16591 days ago · 11 km deep · 9 km away
5. 1.711km WNW of Calipatria, CATue, Apr 28, 10:36 AM PDT · 16591 days ago · 10 km deep · 10 km away
6. 1.712km WNW of Calipatria, CATue, Apr 28, 9:57 AM PDT · 16591 days ago · 8 km deep · 9 km away
7. 1.513km WNW of Calipatria, CATue, Apr 28, 9:44 AM PDT · 16591 days ago · 5 km deep · 9 km away
8. 1.75km N of Westmorland, CATue, Apr 28, 9:26 AM PDT · 16591 days ago · 7 km deep · 16 km away
9. 1.912km WSW of Niland, CATue, Apr 28, 8:13 AM PDT · 16591 days ago · 9 km deep · 8 km away
10. 1.57km WSW of Calipatria, CATue, Apr 28, 8:00 AM PDT · 16591 days ago · 8 km deep · 13 km away
11. 1.713km WNW of Calipatria, CATue, Apr 28, 7:44 AM PDT · 16591 days ago · 6 km deep · 9 km away
12. 2.15km WNW of Westmorland, CATue, Apr 28, 7:31 AM PDT · 16591 days ago · 5 km deep · 20 km away
13. 2.14km SW of Niland, CATue, Apr 28, 7:16 AM PDT · 16591 days ago · 2 km deep · 1 km away
14. 1.77km WSW of Westmorland, CATue, Apr 28, 7:13 AM PDT · 16591 days ago · 12 km deep · 25 km away
15. 1.54km SW of Niland, CATue, Apr 28, 7:03 AM PDT · 16591 days ago · 4 km deep · 1 km away
16. 2.44km WSW of Niland, CATue, Apr 28, 7:00 AM PDT · 16591 days ago · 3 km deep · 1 km away
17. 1.512km WSW of Niland, CATue, Apr 28, 6:54 AM PDT · 16591 days ago · 5 km deep · 8 km away
18. 1.85km NNW of Westmorland, CATue, Apr 28, 6:44 AM PDT · 16591 days ago · 4 km deep · 17 km away
19. 1.712km WSW of Niland, CATue, Apr 28, 5:53 AM PDT · 16591 days ago · 8 km deep · 8 km away
20. 1.813km WNW of Calipatria, CATue, Apr 28, 5:51 AM PDT · 16591 days ago · 5 km deep · 9 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci517039. Read Wed, Sep 30, 2026, 3:59 PM UTC.