M1.5 earthquake 11km WNW of Calipatria, CA

Magnitude

1.5 (Mh), micro

Magnitude from

Southern California Seismic Network

Local time

Mon, Apr 27, 1981, 7:10 PM PDT

UTC

1981-04-28 02:10:55 UTC

Depth

12.4 km (7.7 mi), shallow

Epicenter

33.160° N, 115.627° 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

73°

Stations used

20

• Calipatria, CaliforniaPopulation 7,424. Forecast11 kmWNW
• Brawley, CaliforniaPopulation 25,897. Forecast22 kmNNW
• Mexicali, MexicoPopulation 1,032,686. Forecast61 kmNNW

After

1. 1.87km ESE of Niland, CAMon, Apr 27, 7:22 PM PDT · 16594 days ago · 2 km deep · 19 km away
2. 1.57km WSW of Westmorland, CAMon, Apr 27, 7:39 PM PDT · 16594 days ago · 9 km deep · 17 km away
3. 2.012km WSW of Niland, CAMon, Apr 27, 7:59 PM PDT · 16594 days ago · 10 km deep · 4 km away
4. 1.713km WSW of Niland, CAMon, Apr 27, 8:34 PM PDT · 16594 days ago · 9 km deep · 4 km away
5. 2.03km SSE of Niland, CAMon, Apr 27, 9:09 PM PDT · 16594 days ago · 7 km deep · 12 km away
6. 1.87km SE of Niland, CAMon, Apr 27, 9:23 PM PDT · 16594 days ago · 6 km deep · 16 km away
7. 1.813km WSW of Niland, CAMon, Apr 27, 10:17 PM PDT · 16594 days ago · 11 km deep · 3 km away
8. 1.84km S of Niland, CAMon, Apr 27, 10:42 PM PDT · 16594 days ago · 8 km deep · 11 km away
9. 1.511km WNW of Calipatria, CAMon, Apr 27, 10:46 PM PDT · 16594 days ago · 12 km deep · 0 km away
10. 1.67km W of Westmorland, CAMon, Apr 27, 10:47 PM PDT · 16594 days ago · 11 km deep · 14 km away
11. 1.913km WSW of Niland, CAMon, Apr 27, 11:01 PM PDT · 16594 days ago · 11 km deep · 3 km away
12. 1.913km WSW of Niland, CAMon, Apr 27, 11:07 PM PDT · 16594 days ago · 13 km deep · 3 km away
13. 1.613km WNW of Calipatria, CAMon, Apr 27, 11:20 PM PDT · 16594 days ago · 8 km deep · 2 km away
14. 1.613km WSW of Niland, CAMon, Apr 27, 11:49 PM PDT · 16594 days ago · 9 km deep · 2 km away
15. 1.511km WNW of Calipatria, CATue, Apr 28, 12:34 AM PDT · 16594 days ago · 15 km deep · 0 km away
16. 1.913km WNW of Calipatria, CATue, Apr 28, 1:10 AM PDT · 16594 days ago · 10 km deep · 2 km away
17. 1.76km N of Westmorland, CATue, Apr 28, 1:15 AM PDT · 16594 days ago · 10 km deep · 8 km away
18. 1.613km WNW of Calipatria, CATue, Apr 28, 1:24 AM PDT · 16594 days ago · 11 km deep · 2 km away
19. 1.712km WNW of Calipatria, CATue, Apr 28, 1:26 AM PDT · 16594 days ago · 9 km deep · 1 km away
20. 1.514km WSW of Niland, CATue, Apr 28, 1:54 AM PDT · 16594 days ago · 8 km deep · 3 km away
21. 1.812km WSW of Niland, CATue, Apr 28, 2:17 AM PDT · 16594 days ago · 8 km deep · 4 km away
22. 1.58km WSW of Calipatria, CATue, Apr 28, 2:35 AM PDT · 16594 days ago · 8 km deep · 7 km away
23. 1.913km WSW of Niland, CATue, Apr 28, 3:25 AM PDT · 16594 days ago · 8 km deep · 4 km away
24. 1.812km WSW of Niland, CATue, Apr 28, 3:26 AM PDT · 16594 days ago · 6 km deep · 4 km away
25. 1.68km WSW of Calipatria, CATue, Apr 28, 3:29 AM PDT · 16594 days ago · 7 km deep · 8 km away
26. 1.912km WSW of Niland, CATue, Apr 28, 3:35 AM PDT · 16594 days ago · 6 km deep · 4 km away
27. 1.612km WSW of Niland, CATue, Apr 28, 3:37 AM PDT · 16594 days ago · 5 km deep · 4 km away
28. 1.94km SSW of Niland, CATue, Apr 28, 5:44 AM PDT · 16594 days ago · 6 km deep · 9 km away
29. 1.813km WNW of Calipatria, CATue, Apr 28, 5:51 AM PDT · 16594 days ago · 5 km deep · 2 km away
30. 1.712km WSW of Niland, CATue, Apr 28, 5:53 AM PDT · 16594 days ago · 8 km deep · 4 km away
31. 1.85km NNW of Westmorland, CATue, Apr 28, 6:44 AM PDT · 16594 days ago · 4 km deep · 8 km away
32. 1.512km WSW of Niland, CATue, Apr 28, 6:54 AM PDT · 16593 days ago · 5 km deep · 3 km away
33. 2.44km WSW of Niland, CATue, Apr 28, 7:00 AM PDT · 16593 days ago · 3 km deep · 9 km away
34. 1.54km SW of Niland, CATue, Apr 28, 7:03 AM PDT · 16593 days ago · 4 km deep · 9 km away
35. 1.77km WSW of Westmorland, CATue, Apr 28, 7:13 AM PDT · 16593 days ago · 12 km deep · 16 km away
36. 2.14km SW of Niland, CATue, Apr 28, 7:16 AM PDT · 16593 days ago · 2 km deep · 10 km away
37. 2.15km WNW of Westmorland, CATue, Apr 28, 7:31 AM PDT · 16593 days ago · 5 km deep · 12 km away
38. 1.713km WNW of Calipatria, CATue, Apr 28, 7:44 AM PDT · 16593 days ago · 6 km deep · 2 km away
39. 1.57km WSW of Calipatria, CATue, Apr 28, 8:00 AM PDT · 16593 days ago · 8 km deep · 8 km away
40. 1.912km WSW of Niland, CATue, Apr 28, 8:13 AM PDT · 16593 days ago · 9 km deep · 4 km away
41. 1.75km N of Westmorland, CATue, Apr 28, 9:26 AM PDT · 16593 days ago · 7 km deep · 8 km away
42. 1.513km WNW of Calipatria, CATue, Apr 28, 9:44 AM PDT · 16593 days ago · 5 km deep · 2 km away
43. 1.712km WNW of Calipatria, CATue, Apr 28, 9:57 AM PDT · 16593 days ago · 8 km deep · 2 km away
44. 1.711km WNW of Calipatria, CATue, Apr 28, 10:36 AM PDT · 16593 days ago · 10 km deep · 1 km away
45. 2.213km WSW of Niland, CATue, Apr 28, 10:59 AM PDT · 16593 days ago · 11 km deep · 3 km away
46. 2.07km W of Westmorland, CATue, Apr 28, 11:02 AM PDT · 16593 days ago · 10 km deep · 14 km away
47. 1.66km W of Westmorland, CATue, Apr 28, 11:21 AM PDT · 16593 days ago · 8 km deep · 14 km away
48. 1.84km SW of Niland, CATue, Apr 28, 11:32 AM PDT · 16593 days ago · 2 km deep · 9 km away
49. 1.94km SW of Niland, CATue, Apr 28, 11:44 AM PDT · 16593 days ago · 2 km deep · 9 km away
50. 1.712km SW of Westmorland, CATue, Apr 28, 11:50 AM PDT · 16593 days ago · 11 km deep · 22 km away
51. 1.57km WSW of Westmorland, CATue, Apr 28, 1:19 PM PDT · 16593 days ago · 5 km deep · 17 km away
52. 1.614km WSW of Niland, CATue, Apr 28, 1:26 PM PDT · 16593 days ago · 3 km deep · 4 km away
53. 1.76km N of Westmorland, CATue, Apr 28, 1:30 PM PDT · 16593 days ago · 9 km deep · 7 km away
54. 1.915km WSW of Niland, CATue, Apr 28, 2:58 PM PDT · 16593 days ago · 4 km deep · 5 km away
55. 1.58km NNE of Westmorland, CATue, Apr 28, 3:48 PM PDT · 16593 days ago · 11 km deep · 7 km away
56. 1.76km N of Westmorland, CATue, Apr 28, 5:51 PM PDT · 16593 days ago · 7 km deep · 8 km away
57. 1.56km W of Westmorland, CATue, Apr 28, 6:42 PM PDT · 16593 days ago · 9 km deep · 15 km away
58. 2.05km NNW of Westmorland, CATue, Apr 28, 7:25 PM PDT · 16593 days ago · 5 km deep · 9 km away
59. 1.57km ESE of Niland, CATue, Apr 28, 7:33 PM PDT · 16593 days ago · 4 km deep · 17 km away
60. 1.76km W of Westmorland, CATue, Apr 28, 7:52 PM PDT · 16593 days ago · 9 km deep · 16 km away

The first 60 of 197.

Before

1. 1.812km WNW of Calipatria, CAMon, Apr 27, 6:22 PM PDT · 16594 days ago · 8 km deep · 1 km away
2. 1.66km W of Westmorland, CAMon, Apr 27, 5:56 PM PDT · 16594 days ago · 11 km deep · 14 km away
3. 1.56km WNW of Westmorland, CAMon, Apr 27, 5:54 PM PDT · 16594 days ago · 10 km deep · 14 km away
4. 1.96km WSW of Calipatria, CAMon, Apr 27, 5:46 PM PDT · 16594 days ago · 6 km deep · 8 km away
5. 1.54km NNW of Westmorland, CAMon, Apr 27, 5:23 PM PDT · 16594 days ago · 5 km deep · 10 km away
6. 1.68km WSW of Westmorland, CAMon, Apr 27, 5:09 PM PDT · 16594 days ago · 5 km deep · 17 km away
7. 2.77km W of Westmorland, CAMon, Apr 27, 4:40 PM PDT · 16594 days ago · 14 km deep · 14 km away
8. 1.87km SSW of Niland, CAMon, Apr 27, 4:15 PM PDT · 16594 days ago · 5 km deep · 9 km away
9. 1.612km WSW of Niland, CAMon, Apr 27, 3:28 PM PDT · 16594 days ago · 8 km deep · 2 km away
10. 1.512km WNW of Calipatria, CAMon, Apr 27, 3:22 PM PDT · 16594 days ago · 9 km deep · 1 km away
11. 1.71km SSW of Niland, CAMon, Apr 27, 2:50 PM PDT · 16594 days ago · 4 km deep · 12 km away
12. 1.911km WNW of Calipatria, CAMon, Apr 27, 2:38 PM PDT · 16594 days ago · 10 km deep · 0 km away
13. 1.612km WNW of Calipatria, CAMon, Apr 27, 2:33 PM PDT · 16594 days ago · 9 km deep · 1 km away
14. 1.512km WNW of Calipatria, CAMon, Apr 27, 2:32 PM PDT · 16594 days ago · 8 km deep · 1 km away
15. 1.811km WNW of Calipatria, CAMon, Apr 27, 2:28 PM PDT · 16594 days ago · 8 km deep · 1 km away
16. 1.912km WNW of Calipatria, CAMon, Apr 27, 2:22 PM PDT · 16594 days ago · 9 km deep · 1 km away
17. 2.313km WNW of Calipatria, CAMon, Apr 27, 2:10 PM PDT · 16594 days ago · 11 km deep · 2 km away
18. 2.58km W of Calipatria, CAMon, Apr 27, 1:55 PM PDT · 16594 days ago · 11 km deep · 6 km away
19. 1.66km WSW of Calipatria, CAMon, Apr 27, 1:27 PM PDT · 16594 days ago · 6 km deep · 7 km away
20. 1.620km NE of Pine Valley, CAMon, Apr 27, 12:52 PM PDT · 16594 days ago · 5 km deep · 75 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci520494. Read Sat, Oct 3, 2026, 1:16 AM UTC.