M1.7 earthquake 9km N of Progreso, B.C., MX

Magnitude

1.7 (mc), micro

Local time

Thu, Apr 23, 1981, 10:23 AM PST

UTC

1981-04-23 18:23:07 UTC

Depth

9.9 km (6.2 mi), shallow

Epicenter

32.658° N, 115.589° W

Region

Mexico

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.3 km horizontally, 31.6 km in depth

Depth from

Operator assigned

Station coverage gap

204°, poorly surrounded by stations

Stations used

14

• Santa Isabel, MexicoPopulation 29,311. Forecast3 kmNNW
• Mexicali, MexicoPopulation 1,032,686. Forecast13 kmWNW

After

1. 1.820km SE of Ocotillo, CAFri, May 8, 5:55 AM PDT · 16573 days ago · 12 km deep · 26 km away
2. 1.69km WSW of Niland, CAFri, May 8, 8:37 AM PDT · 16573 days ago · 5 km deep · 62 km away
3. 2.09km WSW of Niland, CAFri, May 8, 8:40 AM PDT · 16573 days ago · 6 km deep · 63 km away
4. 1.810km WSW of Niland, CAFri, May 8, 8:54 AM PDT · 16573 days ago · 5 km deep · 62 km away
5. 1.510km ESE of Puebla, B.C., MXFri, May 8, 3:27 PM PDT · 16573 days ago · 6 km deep · 35 km away
6. 1.77km W of Westmorland, CAFri, May 8, 4:24 PM PDT · 16573 days ago · 9 km deep · 42 km away
7. 2.06km WSW of Calipatria, CASat, May 9, 7:17 AM PDT · 16572 days ago · 7 km deep · 50 km away
8. 1.526km ENE of Pine Valley, CASat, May 9, 7:55 AM PDT · 16572 days ago · 6 km deep · 73 km away
9. 1.613km WSW of Westmorland, CASat, May 9, 8:16 AM PDT · 16572 days ago · 6 km deep · 39 km away
10. 1.912km WSW of Westmorland, CASat, May 9, 10:07 AM PDT · 16572 days ago · 8 km deep · 38 km away
11. 1.913km WSW of Westmorland, CASat, May 9, 10:29 AM PDT · 16572 days ago · 10 km deep · 38 km away
12. 1.511km ENE of Ocotillo Wells, CASat, May 9, 11:49 AM PDT · 16572 days ago · 7 km deep · 72 km away
13. 3.03km SSW of Brawley, CASat, May 9, 3:58 PM PDT · 16572 days ago · 19 km deep · 34 km away
14. 1.55km NNW of Westmorland, CASat, May 9, 7:09 PM PDT · 16572 days ago · 5 km deep · 47 km away
15. 1.66km ESE of Niland, CASat, May 9, 7:46 PM PDT · 16572 days ago · 4 km deep · 64 km away
16. 1.84km ESE of Niland, CASat, May 9, 8:42 PM PDT · 16572 days ago · 5 km deep · 63 km away
17. 1.85km NW of Delta, B.C., MXSun, May 10, 9:06 AM PDT · 16571 days ago · 6 km deep · 45 km away
18. 2.23km WNW of Delta, B.C., MXSun, May 10, 9:22 AM PDT · 16571 days ago · 6 km deep · 48 km away
19. 2.07km S of Delta, B.C., MXSun, May 10, 9:28 AM PDT · 16571 days ago · 6 km deep · 54 km away
20. 1.76km ESE of Niland, CASun, May 10, 2:19 PM PDT · 16571 days ago · 5 km deep · 63 km away
21. 2.218km W of Alberto Oviedo Mota, B.C., MXMon, May 11, 5:34 AM PDT · 16570 days ago · 6 km deep · 56 km away
22. 2.016km WSW of Alberto Oviedo Mota, B.C., MXMon, May 11, 6:59 AM PDT · 16570 days ago · 6 km deep · 59 km away
23. 2.06km WNW of Westmorland, CAMon, May 11, 2:13 PM PDT · 16570 days ago · 10 km deep · 45 km away
24. 1.56km ESE of Niland, CAMon, May 11, 2:33 PM PDT · 16570 days ago · 7 km deep · 63 km away
25. 1.86km NNE of Calipatria, CAMon, May 11, 3:18 PM PDT · 16570 days ago · 6 km deep · 58 km away
26. 1.57km ESE of Niland, CATue, May 12, 12:16 AM PDT · 16570 days ago · 3 km deep · 62 km away
27. 1.77km SSE of Brawley, CATue, May 12, 1:10 AM PDT · 16570 days ago · 14 km deep · 30 km away
28. 1.525km ENE of Pine Valley, CATue, May 12, 8:12 AM PDT · 16569 days ago · 6 km deep · 73 km away
29. 1.86km WSW of Calipatria, CAWed, May 13, 7:03 PM PDT · 16568 days ago · 7 km deep · 50 km away
30. 2.01km ENE of Niland, CAThu, May 14, 4:46 PM PDT · 16567 days ago · 4 km deep · 65 km away
31. 1.65km WNW of Westmorland, CAFri, May 15, 12:39 AM PDT · 16567 days ago · 3 km deep · 45 km away
32. 1.919km ESE of Julian, CAFri, May 15, 1:44 PM PDT · 16566 days ago · 4 km deep · 87 km away
33. 2.113km E of Julian, CAFri, May 15, 2:12 PM PDT · 16566 days ago · 5 km deep · 93 km away
34. 1.711km ESE of North Shore, CASun, May 17, 4:33 AM PDT · 16564 days ago · 4 km deep · 96 km away
35. 1.66km S of Niland, CASun, May 17, 12:02 PM PDT · 16564 days ago · 5 km deep · 60 km away
36. 1.610km ENE of Calexico, CASun, May 17, 6:33 PM PDT · 16564 days ago · 10 km deep · 18 km away
37. 1.66km NNE of Calipatria, CAMon, May 18, 10:26 AM PDT · 16563 days ago · 6 km deep · 58 km away
38. 1.713km WSW of Westmorland, CAMon, May 18, 10:37 AM PDT · 16563 days ago · 10 km deep · 39 km away
39. 1.56km NNE of Calipatria, CAMon, May 18, 10:59 AM PDT · 16563 days ago · 5 km deep · 58 km away
40. 1.66km NNE of Calipatria, CAMon, May 18, 12:23 PM PDT · 16563 days ago · 7 km deep · 58 km away
41. 1.513km WSW of Westmorland, CAMon, May 18, 12:47 PM PDT · 16563 days ago · 8 km deep · 38 km away
42. 1.613km SW of Westmorland, CAMon, May 18, 12:49 PM PDT · 16563 days ago · 5 km deep · 38 km away
43. 1.55km NNE of Calipatria, CAMon, May 18, 12:55 PM PDT · 16563 days ago · 5 km deep · 57 km away
44. 1.65km N of Calipatria, CAMon, May 18, 12:57 PM PDT · 16563 days ago · 5 km deep · 57 km away
45. 1.510km W of Calipatria, CAMon, May 18, 12:58 PM PDT · 16563 days ago · 13 km deep · 54 km away
46. 1.711km WNW of Calipatria, CAMon, May 18, 1:08 PM PDT · 16563 days ago · 11 km deep · 55 km away
47. 1.511km WNW of Calipatria, CAMon, May 18, 1:15 PM PDT · 16563 days ago · 9 km deep · 55 km away
48. 1.711km W of Calipatria, CAMon, May 18, 1:26 PM PDT · 16563 days ago · 11 km deep · 54 km away
49. 2.512km WNW of Calipatria, CAMon, May 18, 2:15 PM PDT · 16563 days ago · 13 km deep · 55 km away
50. 1.611km WNW of Calipatria, CAMon, May 18, 2:32 PM PDT · 16563 days ago · 11 km deep · 55 km away
51. 2.511km WNW of Calipatria, CAMon, May 18, 2:33 PM PDT · 16563 days ago · 13 km deep · 55 km away
52. 1.612km WSW of Westmorland, CAMon, May 18, 2:49 PM PDT · 16563 days ago · 5 km deep · 39 km away
53. 2.511km WNW of Calipatria, CAMon, May 18, 3:38 PM PDT · 16563 days ago · 10 km deep · 55 km away
54. 1.710km S of Salton City, CAMon, May 18, 5:18 PM PDT · 16563 days ago · 9 km deep · 70 km away
55. 1.56km ESE of Niland, CAMon, May 18, 9:01 PM PDT · 16563 days ago · 4 km deep · 65 km away
56. 1.77km WSW of Westmorland, CAMon, May 18, 10:13 PM PDT · 16563 days ago · 11 km deep · 41 km away
57. 2.78km NW of Calipatria, CATue, May 19, 2:56 AM PDT · 16563 days ago · 4 km deep · 58 km away
58. 1.87km E of Imperial, CATue, May 19, 1:16 PM PDT · 16562 days ago · 13 km deep · 23 km away
59. 2.334km WSW of Alberto Oviedo Mota, B.C., MXWed, May 20, 1:47 AM PDT · 16562 days ago · 6 km deep · 66 km away
60. 2.339km WSW of Alberto Oviedo Mota, B.C., MXWed, May 20, 1:30 PM PDT · 16561 days ago · 6 km deep · 64 km away

The first 60 of 191.

From the USGS Earthquake Hazards Program and its partner networks, event ci516792. Read Tue, Sep 22, 2026, 10:48 PM UTC.