M2.1 earthquake 9km NNW of Delta, B.C., MX

Magnitude

2.1 (mc), micro

Local time

Fri, Sep 4, 1981, 5:32 AM PDT

UTC

1981-09-04 12:32:35 UTC

Depth

6.0 km (3.7 mi), shallow

Epicenter

32.424° N, 115.240° W

Region

Mexico

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 2.3 km horizontally, 31.6 km in depth

Depth from

Operator assigned

Station coverage gap

200°, poorly surrounded by stations

Stations used

20

• Puebla, MexicoPopulation 15,168. Forecast19 kmSE
• Mexicali, MexicoPopulation 1,032,686. Forecast30 kmSE

After

1. 2.681km SSW of Alberto Oviedo Mota, B.C., MXFri, Sep 4, 9:19 AM PDT · 16454 days ago · 5 km deep · 99 km away
2. 1.822km WSW of Progreso, B.C., MXFri, Sep 4, 3:45 PM PDT · 16454 days ago · 8 km deep · 54 km away
3. 1.68km SW of Holtville, CASun, Sep 6, 3:26 AM PDT · 16453 days ago · 6 km deep · 43 km away
4. 2.016km W of Progreso, B.C., MXSun, Sep 6, 10:11 PM PDT · 16452 days ago · 14 km deep · 50 km away
5. 2.471km ENE of Maneadero, B.C., MXMon, Sep 7, 6:39 PM PDT · 16451 days ago · 6 km deep · 81 km away
6. 3.59km WSW of Puebla, B.C., MXWed, Sep 9, 11:06 AM PDT · 16449 days ago · 6 km deep · 22 km away
7. 1.53km SW of Brawley, CAWed, Sep 9, 1:55 PM PDT · 16449 days ago · 14 km deep · 66 km away
8. 2.065km WSW of Alberto Oviedo Mota, B.C., MXFri, Sep 11, 11:58 AM PDT · 16447 days ago · 6 km deep · 74 km away
9. 2.369km S of Estacion Coahuila, B.C., MXSun, Sep 13, 6:36 PM PDT · 16445 days ago · 6 km deep · 96 km away
10. 2.910km W of Alberto Oviedo Mota, B.C., MXWed, Sep 16, 12:25 AM PDT · 16443 days ago · 6 km deep · 23 km away
11. 1.55km ENE of Westmorland, CAThu, Sep 17, 10:47 AM PDT · 16441 days ago · 11 km deep · 76 km away
12. 3.374km E of Maneadero, B.C., MXFri, Sep 18, 4:50 AM PDT · 16441 days ago · 6 km deep · 99 km away
13. 2.18km SW of Holtville, CAFri, Sep 18, 6:19 PM PDT · 16440 days ago · 10 km deep · 42 km away
14. 1.625km SSE of Ocotillo, CASat, Sep 19, 1:44 AM PDT · 16440 days ago · 4 km deep · 60 km away
15. 1.511km SW of Westmorland, CASat, Sep 19, 3:57 PM PDT · 16439 days ago · 10 km deep · 75 km away
16. 1.611km SW of Westmorland, CASat, Sep 19, 7:49 PM PDT · 16439 days ago · 8 km deep · 75 km away
17. 1.611km W of Calipatria, CATue, Sep 22, 10:16 PM PDT · 16436 days ago · 8 km deep · 88 km away
18. 1.523km SE of Ocotillo Wells, CAThu, Sep 24, 12:16 AM PDT · 16435 days ago · 10 km deep · 93 km away
19. 1.721km WSW of Westmorland, CAThu, Sep 24, 2:16 PM PDT · 16434 days ago · 8 km deep · 78 km away
20. 1.720km WSW of Westmorland, CAThu, Sep 24, 11:05 PM PDT · 16434 days ago · 5 km deep · 78 km away
21. 2.130km W of Alberto Oviedo Mota, B.C., MXSun, Sep 27, 11:21 AM PDT · 16431 days ago · 6 km deep · 35 km away
22. 2.810km SW of Westmorland, CAMon, Sep 28, 2:20 AM PDT · 16431 days ago · 14 km deep · 77 km away
23. 1.85km NNW of Delta, B.C., MXMon, Sep 28, 8:38 AM PDT · 16430 days ago · 6 km deep · 4 km away
24. 2.05km N of Delta, B.C., MXMon, Sep 28, 8:55 AM PDT · 16430 days ago · 6 km deep · 6 km away
25. 2.69km NNW of Delta, B.C., MXMon, Sep 28, 9:12 AM PDT · 16430 days ago · 6 km deep · 2 km away
26. 2.47km NNW of Delta, B.C., MXMon, Sep 28, 9:21 AM PDT · 16430 days ago · 6 km deep · 2 km away
27. 2.06km N of Delta, B.C., MXMon, Sep 28, 9:38 AM PDT · 16430 days ago · 6 km deep · 4 km away
28. 1.56km WSW of Westmorland, CAMon, Sep 28, 10:43 AM PDT · 16430 days ago · 4 km deep · 79 km away
29. 1.710km SW of Westmorland, CAMon, Sep 28, 3:12 PM PDT · 16430 days ago · 11 km deep · 76 km away
30. 2.05km NNE of Delta, B.C., MXMon, Sep 28, 7:43 PM PDT · 16430 days ago · 6 km deep · 7 km away
31. 1.56km N of Delta, B.C., MXMon, Sep 28, 9:25 PM PDT · 16430 days ago · 6 km deep · 5 km away
32. 1.511km ESE of Puebla, B.C., MXTue, Sep 29, 3:03 PM PDT · 16429 days ago · 6 km deep · 12 km away
33. 1.612km WNW of Delta, B.C., MXTue, Sep 29, 5:03 PM PDT · 16429 days ago · 6 km deep · 8 km away
34. 1.78km SW of Heber, CATue, Sep 29, 7:23 PM PDT · 16429 days ago · 6 km deep · 44 km away
35. 2.220km SW of Ocotillo, CASat, Oct 3, 7:49 AM PDT · 16425 days ago · 12 km deep · 87 km away
36. 1.928km WSW of Progreso, B.C., MXSun, Oct 4, 5:35 AM PDT · 16425 days ago · 1 km deep · 57 km away
37. 2.128km SW of Progreso, B.C., MXSun, Oct 4, 5:42 AM PDT · 16425 days ago · 6 km deep · 55 km away
38. 2.310km N of Westmorland, CAMon, Oct 5, 1:53 PM PDT · 16423 days ago · 13 km deep · 87 km away
39. 3.415km WNW of Delta, B.C., MXTue, Oct 6, 11:22 AM PDT · 16422 days ago · 6 km deep · 9 km away
40. 1.712km WSW of Westmorland, CATue, Oct 6, 2:39 PM PDT · 16422 days ago · 4 km deep · 77 km away
41. 2.530km WSW of Alberto Oviedo Mota, B.C., MXTue, Oct 6, 4:06 PM PDT · 16422 days ago · 6 km deep · 37 km away
42. 2.012km WNW of Delta, B.C., MXTue, Oct 6, 6:41 PM PDT · 16422 days ago · 6 km deep · 7 km away
43. 1.56km NNE of Westmorland, CAWed, Oct 7, 2:19 PM PDT · 16421 days ago · 10 km deep · 81 km away
44. 1.57km SW of Holtville, CAWed, Oct 7, 5:58 PM PDT · 16421 days ago · 17 km deep · 43 km away
45. 1.812km WNW of Delta, B.C., MXThu, Oct 8, 3:56 AM PDT · 16421 days ago · 6 km deep · 7 km away
46. 1.721km WSW of Progreso, B.C., MXSat, Oct 10, 4:17 AM PDT · 16419 days ago · 4 km deep · 55 km away
47. 1.69km S of Holtville, CASun, Oct 11, 6:22 AM PDT · 16418 days ago · 6 km deep · 37 km away
48. 1.79km SSW of Holtville, CASun, Oct 11, 6:23 AM PDT · 16417 days ago · 6 km deep · 38 km away
49. 1.62km E of Niland, CATue, Oct 13, 3:04 AM PDT · 16416 days ago · 2 km deep · 94 km away
50. 1.616km SW of Progreso, B.C., MXTue, Oct 13, 9:00 AM PDT · 16415 days ago · 4 km deep · 45 km away
51. 1.516km WSW of Progreso, B.C., MXTue, Oct 13, 9:08 AM PDT · 16415 days ago · 4 km deep · 49 km away
52. 1.517km SW of Progreso, B.C., MXTue, Oct 13, 9:49 AM PDT · 16415 days ago · 2 km deep · 47 km away
53. 1.716km WSW of Progreso, B.C., MXTue, Oct 13, 1:38 PM PDT · 16415 days ago · 4 km deep · 49 km away
54. 1.716km WSW of Progreso, B.C., MXTue, Oct 13, 2:44 PM PDT · 16415 days ago · 2 km deep · 47 km away
55. 1.66km W of Westmorland, CAWed, Oct 14, 3:55 PM PDT · 16414 days ago · 4 km deep · 79 km away
56. 1.822km SW of Westmorland, CAThu, Oct 15, 3:40 AM PDT · 16414 days ago · 7 km deep · 77 km away
57. 1.76km ENE of Puebla, B.C., MXThu, Oct 15, 9:14 AM PDT · 16413 days ago · 6 km deep · 18 km away
58. 1.94km SW of Guadalupe Victoria, B.C., MXSun, Oct 18, 5:01 PM PDT · 16410 days ago · 6 km deep · 20 km away
59. 2.154km E of Maneadero, B.C., MXMon, Oct 19, 6:37 PM PDT · 16409 days ago · 6 km deep · 100 km away
60. 2.08km NW of Ocotillo, CATue, Oct 20, 1:09 PM PDT · 16408 days ago · 9 km deep · 86 km away

The first 60 of 75.

Before

1. 1.714km NNW of Delta, B.C., MXThu, Sep 3, 7:11 PM PDT · 16455 days ago · 6 km deep · 6 km away
2. 2.712km ESE of Puebla, B.C., MXThu, Sep 3, 1:31 PM PDT · 16455 days ago · 6 km deep · 11 km away
3. 1.64km NNW of Westmorland, CAThu, Sep 3, 7:45 AM PDT · 16455 days ago · 10 km deep · 81 km away
4. 1.86km NNW of Westmorland, CAThu, Sep 3, 1:03 AM PDT · 16456 days ago · 11 km deep · 83 km away
5. 1.719km ESE of Campo, CATue, Sep 1, 5:40 PM PDT · 16457 days ago · 6 km deep · 99 km away
6. 3.530 km S of Ejido Doctor Alberto Oviedo Mota (El Indiviso), MexicoMon, Aug 31, 1:50 AM PDT · 16459 days ago · 6 km deep · 77 km away
7. 2.466km S of Estacion Coahuila, B.C., MXMon, Aug 31, 12:48 AM PDT · 16459 days ago · 6 km deep · 93 km away
8. 2.668km S of Estacion Coahuila, B.C., MXSun, Aug 30, 6:57 AM PDT · 16459 days ago · 6 km deep · 96 km away
9. 1.510km E of Puebla, B.C., MXFri, Aug 28, 10:15 PM PDT · 16461 days ago · 6 km deep · 16 km away
10. 2.326km WSW of Westmorland, CAFri, Aug 28, 3:06 AM PDT · 16462 days ago · 11 km deep · 84 km away
11. 1.99km ENE of Calexico, CAThu, Aug 27, 3:23 AM PDT · 16463 days ago · 17 km deep · 37 km away
12. 2.559km S of Estacion Coahuila, B.C., MXSat, Aug 22, 1:15 PM PDT · 16467 days ago · 6 km deep · 89 km away
13. 1.67km N of Imperial, CASat, Aug 22, 12:12 PM PDT · 16467 days ago · 12 km deep · 62 km away
14. 2.04km WSW of Brawley, CAFri, Aug 21, 6:18 AM PDT · 16469 days ago · 5 km deep · 68 km away
15. 2.546km S of Estacion Coahuila, B.C., MXFri, Aug 21, 2:17 AM PDT · 16469 days ago · 6 km deep · 75 km away
16. 1.523km ESE of Ocotillo Wells, CAThu, Aug 20, 2:13 PM PDT · 16469 days ago · 4 km deep · 93 km away
17. 2.44km SE of Westmorland, CATue, Aug 18, 8:00 PM PDT · 16471 days ago · 5 km deep · 73 km away
18. 2.465km E of Maneadero, B.C., MXTue, Aug 18, 5:12 AM PDT · 16472 days ago · 6 km deep · 92 km away
19. 1.64km NNW of Westmorland, CAMon, Aug 17, 12:56 PM PDT · 16472 days ago · 11 km deep · 82 km away
20. 1.712km SE of Puebla, B.C., MXFri, Aug 14, 6:49 PM PDT · 16475 days ago · 6 km deep · 8 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci522193. Read Wed, Sep 23, 2026, 12:52 AM UTC.