M1.8 earthquake 13km NNW of Delta, B.C., MX

Magnitude

1.8 (mh), micro

Local time

Tue, Apr 21, 1981, 3:25 AM PST

UTC

1981-04-21 11:25:02 UTC

Depth

6.0 km (3.7 mi), shallow

Epicenter

32.453° N, 115.267° W

Region

Mexico

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 2.7 km horizontally, 31.6 km in depth

Depth from

Operator assigned

Station coverage gap

217°, poorly surrounded by stations

Stations used

9

• Puebla, MexicoPopulation 15,168. Forecast15 kmSSE
• Mexicali, MexicoPopulation 1,032,686. Forecast26 kmSE

After

1. 1.711km WSW of Niland, CASat, May 2, 12:51 PM PDT · 16579 days ago · 7 km deep · 91 km away
2. 2.212km WNW of Calipatria, CASat, May 2, 2:24 PM PDT · 16579 days ago · 11 km deep · 86 km away
3. 2.912km WSW of Niland, CASat, May 2, 4:56 PM PDT · 16579 days ago · 12 km deep · 91 km away
4. 1.811km WSW of Niland, CASat, May 2, 5:30 PM PDT · 16579 days ago · 5 km deep · 90 km away
5. 2.06km ESE of Niland, CASat, May 2, 6:33 PM PDT · 16579 days ago · 4 km deep · 86 km away
6. 1.711km WSW of Niland, CASat, May 2, 9:39 PM PDT · 16578 days ago · 8 km deep · 90 km away
7. 1.813km WSW of Westmorland, CASat, May 2, 10:43 PM PDT · 16578 days ago · 11 km deep · 73 km away
8. 1.611km WSW of Westmorland, CASat, May 2, 10:57 PM PDT · 16578 days ago · 3 km deep · 74 km away
9. 1.77km W of Westmorland, CASun, May 3, 4:03 AM PDT · 16578 days ago · 4 km deep · 75 km away
10. 1.86km W of Westmorland, CASun, May 3, 4:22 AM PDT · 16578 days ago · 12 km deep · 77 km away
11. 2.212km SW of Puebla, B.C., MXSun, May 3, 5:39 AM PDT · 16578 days ago · 6 km deep · 17 km away
12. 1.77km W of Westmorland, CASun, May 3, 7:17 AM PDT · 16578 days ago · 9 km deep · 77 km away
13. 1.97km NE of Imperial, CASun, May 3, 7:37 AM PDT · 16578 days ago · 9 km deep · 55 km away
14. 1.95km SE of Niland, CASun, May 3, 8:12 AM PDT · 16578 days ago · 4 km deep · 87 km away
15. 2.68km WSW of Calipatria, CASun, May 3, 8:24 AM PDT · 16578 days ago · 14 km deep · 78 km away
16. 1.610km N of Westmorland, CASun, May 3, 10:40 AM PDT · 16578 days ago · 10 km deep · 83 km away
17. 1.710km N of Westmorland, CASun, May 3, 10:55 AM PDT · 16578 days ago · 10 km deep · 82 km away
18. 1.710km N of Westmorland, CASun, May 3, 11:01 AM PDT · 16578 days ago · 9 km deep · 82 km away
19. 2.07km SE of Niland, CASun, May 3, 11:08 AM PDT · 16578 days ago · 7 km deep · 85 km away
20. 1.67km SE of Niland, CASun, May 3, 11:12 AM PDT · 16578 days ago · 4 km deep · 85 km away
21. 2.07km SE of Niland, CASun, May 3, 11:17 AM PDT · 16578 days ago · 7 km deep · 85 km away
22. 1.511km N of Westmorland, CASun, May 3, 11:42 AM PDT · 16578 days ago · 9 km deep · 83 km away
23. 1.76km ESE of Niland, CASun, May 3, 12:10 PM PDT · 16578 days ago · 3 km deep · 86 km away
24. 2.513km WSW of Niland, CASun, May 3, 12:15 PM PDT · 16578 days ago · 13 km deep · 91 km away
25. 1.612km WSW of Niland, CASun, May 3, 12:17 PM PDT · 16578 days ago · 12 km deep · 90 km away
26. 1.611km N of Westmorland, CASun, May 3, 12:53 PM PDT · 16578 days ago · 10 km deep · 84 km away
27. 1.58km SE of Niland, CASun, May 3, 1:18 PM PDT · 16578 days ago · 8 km deep · 84 km away
28. 1.58km ESE of Niland, CASun, May 3, 1:28 PM PDT · 16578 days ago · 4 km deep · 85 km away
29. 1.611km WSW of Niland, CASun, May 3, 1:39 PM PDT · 16578 days ago · 9 km deep · 90 km away
30. 1.96km ESE of Niland, CASun, May 3, 2:00 PM PDT · 16578 days ago · 4 km deep · 86 km away
31. 1.66km ESE of Niland, CASun, May 3, 3:44 PM PDT · 16578 days ago · 5 km deep · 86 km away
32. 1.76km ESE of Niland, CASun, May 3, 4:58 PM PDT · 16578 days ago · 4 km deep · 87 km away
33. 2.07km ESE of Niland, CASun, May 3, 5:13 PM PDT · 16578 days ago · 4 km deep · 86 km away
34. 1.77km ESE of Niland, CASun, May 3, 5:14 PM PDT · 16578 days ago · 4 km deep · 86 km away
35. 1.67km ESE of Niland, CASun, May 3, 5:16 PM PDT · 16578 days ago · 5 km deep · 85 km away
36. 1.77km ESE of Niland, CASun, May 3, 5:26 PM PDT · 16578 days ago · 3 km deep · 86 km away
37. 1.711km WSW of Niland, CASun, May 3, 6:12 PM PDT · 16578 days ago · 5 km deep · 90 km away
38. 2.25km ESE of Niland, CASun, May 3, 6:33 PM PDT · 16578 days ago · 5 km deep · 88 km away
39. 1.65km ESE of Niland, CASun, May 3, 6:41 PM PDT · 16578 days ago · 9 km deep · 87 km away
40. 1.86km ESE of Niland, CASun, May 3, 6:46 PM PDT · 16578 days ago · 4 km deep · 87 km away
41. 1.57km ESE of Niland, CASun, May 3, 6:48 PM PDT · 16578 days ago · 3 km deep · 86 km away
42. 1.56km ESE of Niland, CASun, May 3, 7:34 PM PDT · 16578 days ago · 3 km deep · 86 km away
43. 1.76km W of Westmorland, CASun, May 3, 8:23 PM PDT · 16578 days ago · 11 km deep · 76 km away
44. 2.04km SE of Niland, CASun, May 3, 8:35 PM PDT · 16578 days ago · 11 km deep · 87 km away
45. 1.76km ESE of Niland, CASun, May 3, 10:34 PM PDT · 16577 days ago · 4 km deep · 87 km away
46. 2.636km WSW of Alberto Oviedo Mota, B.C., MXSun, May 3, 10:51 PM PDT · 16577 days ago · 6 km deep · 49 km away
47. 1.86km ESE of Niland, CASun, May 3, 11:28 PM PDT · 16577 days ago · 5 km deep · 86 km away
48. 1.67km ESE of Niland, CASun, May 3, 11:49 PM PDT · 16577 days ago · 5 km deep · 85 km away
49. 2.612km WSW of Niland, CASun, May 3, 11:58 PM PDT · 16577 days ago · 14 km deep · 91 km away
50. 2.26km ESE of Niland, CAMon, May 4, 12:00 AM PDT · 16577 days ago · 4 km deep · 87 km away
51. 2.15km ESE of Niland, CAMon, May 4, 1:58 AM PDT · 16577 days ago · 9 km deep · 87 km away
52. 1.57km ESE of Niland, CAMon, May 4, 2:14 AM PDT · 16577 days ago · 3 km deep · 86 km away
53. 1.933km S of Progreso, B.C., MXMon, May 4, 2:24 AM PDT · 16577 days ago · 6 km deep · 35 km away
54. 1.87km SE of Niland, CAMon, May 4, 3:46 AM PDT · 16577 days ago · 7 km deep · 85 km away
55. 1.67km W of Westmorland, CAMon, May 4, 4:09 AM PDT · 16577 days ago · 10 km deep · 77 km away
56. 1.87km W of Westmorland, CAMon, May 4, 4:28 AM PDT · 16577 days ago · 11 km deep · 77 km away
57. 2.15km ESE of Niland, CAMon, May 4, 4:51 AM PDT · 16577 days ago · 11 km deep · 87 km away
58. 1.76km ESE of Niland, CAMon, May 4, 5:08 AM PDT · 16577 days ago · 5 km deep · 86 km away
59. 1.58km ESE of Niland, CAMon, May 4, 7:15 AM PDT · 16577 days ago · 4 km deep · 85 km away
60. 1.66km ESE of Niland, CAMon, May 4, 8:25 AM PDT · 16577 days ago · 4 km deep · 87 km away

The first 60 of 190.

From the USGS Earthquake Hazards Program and its partner networks, event ci514725. Read Tue, Sep 22, 2026, 3:09 PM UTC.