M1.9 earthquake 6km NNE of Delta, B.C., MX

Magnitude

1.9 (ML, local (Richter)), micro

Magnitude from

Southern California Seismic Network

Local time

Sun, Oct 21, 1979, 9:29 PM PDT

UTC

1979-10-22 04:29:21 UTC

Depth

6.0 km (3.7 mi), shallow

Epicenter

32.408° N, 115.168° W

Region

Mexico

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 3.6 km horizontally, 31.6 km in depth

Depth from

Operator assigned

Station coverage gap

250°, poorly surrounded by stations

Stations used

6

• Ciudad Guadalupe Victoria, MexicoPopulation 17,119. Forecast15 kmNNW
• Mexicali, MexicoPopulation 1,032,686. Forecast36 kmSE

After

1. 2.28km WSW of Holtville, CASun, Oct 21, 9:40 PM PDT · 17147 days ago · 15 km deep · 50 km away
2. 1.98km NNE of Delta, B.C., MXSun, Oct 21, 11:01 PM PDT · 17147 days ago · 4 km deep · 2 km away
3. 2.49km N of Delta, B.C., MXSun, Oct 21, 11:07 PM PDT · 17147 days ago · 15 km deep · 3 km away
4. 2.68km WSW of Holtville, CAMon, Oct 22, 3:40 AM PDT · 17147 days ago · 15 km deep · 50 km away
5. 1.710km WSW of Niland, CAMon, Oct 22, 5:02 AM PDT · 17147 days ago · 5 km deep · 99 km away
6. 2.36km E of Westmorland, CAMon, Oct 22, 6:26 AM PDT · 17147 days ago · 12 km deep · 80 km away
7. 2.19km SSW of Holtville, CAMon, Oct 22, 6:36 AM PDT · 17147 days ago · 15 km deep · 42 km away
8. 1.58km E of Imperial, CAMon, Oct 22, 7:52 AM PDT · 17147 days ago · 13 km deep · 57 km away
9. 1.711km E of Calipatria, CAMon, Oct 22, 9:05 AM PDT · 17147 days ago · 6 km deep · 81 km away
10. 1.610km WNW of Calipatria, CAMon, Oct 22, 9:26 AM PDT · 17147 days ago · 2 km deep · 93 km away
11. 1.55km NNE of Calipatria, CAMon, Oct 22, 11:43 AM PDT · 17147 days ago · 6 km deep · 89 km away
12. 2.36km NE of Imperial, CAMon, Oct 22, 11:48 AM PDT · 17147 days ago · 13 km deep · 63 km away
13. 2.413km N of Delta, B.C., MXMon, Oct 22, 12:06 PM PDT · 17147 days ago · 15 km deep · 9 km away
14. 2.07km SW of Holtville, CAMon, Oct 22, 12:22 PM PDT · 17147 days ago · 15 km deep · 46 km away
15. 1.78km N of Brawley, CAMon, Oct 22, 2:02 PM PDT · 17147 days ago · 11 km deep · 79 km away
16. 2.512km N of Delta, B.C., MXMon, Oct 22, 2:17 PM PDT · 17146 days ago · 15 km deep · 6 km away
17. 2.59km SSE of Brawley, CAMon, Oct 22, 3:04 PM PDT · 17146 days ago · 13 km deep · 63 km away
18. 1.97km SW of Holtville, CAMon, Oct 22, 3:58 PM PDT · 17146 days ago · 15 km deep · 46 km away
19. 1.57km SW of Holtville, CAMon, Oct 22, 6:04 PM PDT · 17146 days ago · 15 km deep · 47 km away
20. 2.97km NNE of Imperial, CAMon, Oct 22, 6:13 PM PDT · 17146 days ago · 15 km deep · 66 km away
21. 2.05km E of Westmorland, CAMon, Oct 22, 6:25 PM PDT · 17146 days ago · 11 km deep · 79 km away
22. 1.57km NNE of Imperial, CAMon, Oct 22, 6:41 PM PDT · 17146 days ago · 11 km deep · 66 km away
23. 2.77km NNE of Imperial, CAMon, Oct 22, 6:41 PM PDT · 17146 days ago · 14 km deep · 65 km away
24. 1.56km SW of Brawley, CAMon, Oct 22, 6:53 PM PDT · 17146 days ago · 15 km deep · 71 km away
25. 1.96km SW of Brawley, CAMon, Oct 22, 6:53 PM PDT · 17146 days ago · 14 km deep · 71 km away
26. 1.84km ENE of Westmorland, CAMon, Oct 22, 8:36 PM PDT · 17146 days ago · 14 km deep · 81 km away
27. 1.95km WSW of Brawley, CAMon, Oct 22, 9:14 PM PDT · 17146 days ago · 14 km deep · 72 km away
28. 2.010km SW of Westmorland, CAMon, Oct 22, 9:44 PM PDT · 17146 days ago · 8 km deep · 80 km away
29. 1.711km SW of Westmorland, CAMon, Oct 22, 9:44 PM PDT · 17146 days ago · 9 km deep · 81 km away
30. 1.96km E of Westmorland, CAMon, Oct 22, 10:03 PM PDT · 17146 days ago · 11 km deep · 80 km away
31. 1.66km E of Westmorland, CAMon, Oct 22, 10:08 PM PDT · 17146 days ago · 10 km deep · 79 km away
32. 2.46km E of Westmorland, CAMon, Oct 22, 10:16 PM PDT · 17146 days ago · 14 km deep · 80 km away
33. 2.46km ENE of Westmorland, CAMon, Oct 22, 10:20 PM PDT · 17146 days ago · 12 km deep · 80 km away
34. 1.75km ENE of Westmorland, CAMon, Oct 22, 10:23 PM PDT · 17146 days ago · 6 km deep · 81 km away
35. 1.77km NNW of Brawley, CAMon, Oct 22, 10:25 PM PDT · 17146 days ago · 10 km deep · 78 km away
36. 1.67km E of Westmorland, CATue, Oct 23, 1:30 AM PDT · 17146 days ago · 11 km deep · 79 km away
37. 1.66km E of Westmorland, CATue, Oct 23, 2:10 AM PDT · 17146 days ago · 11 km deep · 79 km away
38. 1.88km SSW of Holtville, CATue, Oct 23, 2:58 AM PDT · 17146 days ago · 15 km deep · 45 km away
39. 2.56km ENE of Westmorland, CATue, Oct 23, 4:06 AM PDT · 17146 days ago · 14 km deep · 80 km away
40. 2.36km E of Westmorland, CATue, Oct 23, 4:12 AM PDT · 17146 days ago · 14 km deep · 80 km away
41. 2.713km WSW of Westmorland, CATue, Oct 23, 5:52 AM PDT · 17146 days ago · 11 km deep · 82 km away
42. 1.87km E of Westmorland, CATue, Oct 23, 6:42 AM PDT · 17146 days ago · 12 km deep · 79 km away
43. 1.87km E of Westmorland, CATue, Oct 23, 8:10 AM PDT · 17146 days ago · 8 km deep · 79 km away
44. 2.012km SW of Westmorland, CATue, Oct 23, 9:07 AM PDT · 17146 days ago · 5 km deep · 82 km away
45. 1.95km ESE of Westmorland, CATue, Oct 23, 9:37 AM PDT · 17146 days ago · 10 km deep · 78 km away
46. 2.511km SSE of Puebla, B.C., MXTue, Oct 23, 11:29 AM PDT · 17146 days ago · 15 km deep · 16 km away
47. 1.75km E of Westmorland, CATue, Oct 23, 12:19 PM PDT · 17146 days ago · 11 km deep · 79 km away
48. 2.27km SSW of Holtville, CATue, Oct 23, 3:31 PM PDT · 17145 days ago · 15 km deep · 45 km away
49. 1.77km E of Westmorland, CATue, Oct 23, 4:15 PM PDT · 17145 days ago · 11 km deep · 79 km away
50. 1.87km E of Westmorland, CATue, Oct 23, 4:47 PM PDT · 17145 days ago · 12 km deep · 79 km away
51. 1.913km NNW of Delta, B.C., MXTue, Oct 23, 6:50 PM PDT · 17145 days ago · 5 km deep · 8 km away
52. 2.18km SSE of Calipatria, CATue, Oct 23, 7:00 PM PDT · 17145 days ago · 4 km deep · 78 km away
53. 2.48km WSW of Holtville, CATue, Oct 23, 8:05 PM PDT · 17145 days ago · 15 km deep · 50 km away
54. 1.510km SSW of Holtville, CATue, Oct 23, 9:31 PM PDT · 17145 days ago · 15 km deep · 42 km away
55. 1.98km SSW of Holtville, CATue, Oct 23, 10:52 PM PDT · 17145 days ago · 15 km deep · 44 km away
56. 2.612km NNW of Delta, B.C., MXTue, Oct 23, 11:00 PM PDT · 17145 days ago · 15 km deep · 8 km away
57. 2.314km NNW of Delta, B.C., MXTue, Oct 23, 11:05 PM PDT · 17145 days ago · 15 km deep · 9 km away
58. 2.39km SSW of Holtville, CATue, Oct 23, 11:19 PM PDT · 17145 days ago · 15 km deep · 45 km away
59. 3.112km NNW of Delta, B.C., MXTue, Oct 23, 11:44 PM PDT · 17145 days ago · 15 km deep · 8 km away
60. 1.914km WNW of Calipatria, CAWed, Oct 24, 1:04 AM PDT · 17145 days ago · 5 km deep · 96 km away

The first 60 of at least 202.

Before

1. 1.75km NE of Westmorland, CASun, Oct 21, 9:05 PM PDT · 17147 days ago · 6 km deep · 84 km away
2. 1.67km SW of Holtville, CASun, Oct 21, 8:23 PM PDT · 17147 days ago · 12 km deep · 47 km away
3. 1.75km S of Brawley, CASun, Oct 21, 6:57 PM PDT · 17147 days ago · 14 km deep · 68 km away
4. 2.28km WSW of Holtville, CASun, Oct 21, 5:43 PM PDT · 17147 days ago · 15 km deep · 50 km away
5. 1.82km WNW of Brawley, CASun, Oct 21, 5:04 PM PDT · 17147 days ago · 14 km deep · 73 km away
6. 2.17km NE of Imperial, CASun, Oct 21, 2:14 PM PDT · 17147 days ago · 13 km deep · 63 km away
7. 2.010km N of Delta, B.C., MXSun, Oct 21, 1:53 PM PDT · 17148 days ago · 10 km deep · 4 km away
8. 1.66km E of Westmorland, CASun, Oct 21, 1:48 PM PDT · 17148 days ago · 11 km deep · 80 km away
9. 2.48km NNE of Delta, B.C., MXSun, Oct 21, 1:32 PM PDT · 17148 days ago · 15 km deep · 2 km away
10. 3.08km N of Delta, B.C., MXSun, Oct 21, 1:27 PM PDT · 17148 days ago · 15 km deep · 2 km away
11. 2.69km NE of Mexicali, B.C., MXSun, Oct 21, 12:54 PM PDT · 17148 days ago · 15 km deep · 41 km away
12. 2.943km ESE of Estacion Coahuila, B.C., MXSun, Oct 21, 12:46 PM GMT-7 · 17148 days ago · 15 km deep · 69 km away
13. 2.014km NNW of Delta, B.C., MXSun, Oct 21, 12:21 PM PDT · 17148 days ago · 15 km deep · 11 km away
14. 2.98km SSW of Holtville, CASun, Oct 21, 12:04 PM PDT · 17148 days ago · 15 km deep · 44 km away
15. 1.510km WNW of Calipatria, CASun, Oct 21, 11:41 AM PDT · 17148 days ago · 5 km deep · 92 km away
16. 3.27km SSE of Brawley, CASun, Oct 21, 11:17 AM PDT · 17148 days ago · 15 km deep · 65 km away
17. 1.912km NNW of Delta, B.C., MXSun, Oct 21, 11:15 AM PDT · 17148 days ago · 6 km deep · 8 km away
18. 1.95km ESE of Westmorland, CASun, Oct 21, 10:46 AM PDT · 17148 days ago · 11 km deep · 79 km away
19. 2.05km E of Westmorland, CASun, Oct 21, 10:35 AM PDT · 17148 days ago · 12 km deep · 79 km away
20. 2.06km SSE of Niland, CASun, Oct 21, 10:21 AM PDT · 17148 days ago · 6 km deep · 92 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci3353133. Read Fri, Oct 2, 2026, 8:40 AM UTC.