M1.7 earthquake 16km WNW of Delta, B.C., MX

Magnitude

1.7 (Mh), micro

Magnitude from

Southern California Seismic Network

Local time

Sun, May 20, 1979, 6:40 PM PDT

UTC

1979-05-21 01:40:08 UTC

Depth

6.0 km (3.7 mi), shallow

Epicenter

32.424° N, 115.337° W

Region

Mexico

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.9 km horizontally, 31.6 km in depth

Depth from

Operator assigned

Station coverage gap

232°, poorly surrounded by stations

Stations used

9

• Puebla, MexicoPopulation 15,168. Forecast16 kmS
• Mexicali, MexicoPopulation 1,032,686. Forecast25 kmSSE

After

1. 2.30km E of El Centro, CAMon, May 21, 3:33 AM PDT · 17300 days ago · 10 km deep · 45 km away
2. 2.519km WNW of Progreso, B.C., MXMon, May 21, 8:14 AM PDT · 17300 days ago · 10 km deep · 48 km away
3. 2.212km WNW of Imperial, CAWed, May 23, 12:31 PM PDT · 17298 days ago · 6 km deep · 62 km away
4. 1.66km SSW of Holtville, CAThu, May 24, 12:24 AM PDT · 17297 days ago · 15 km deep · 38 km away
5. 1.99km ENE of Puebla, B.C., MXThu, May 24, 11:36 AM PDT · 17297 days ago · 10 km deep · 21 km away
6. 2.27km ENE of Puebla, B.C., MXSat, May 26, 10:16 AM PDT · 17295 days ago · 10 km deep · 18 km away
7. 2.512km WSW of Delta, B.C., MXSun, May 27, 10:57 PM PDT · 17293 days ago · 10 km deep · 11 km away
8. 1.86km E of Westmorland, CAMon, May 28, 10:21 PM PDT · 17292 days ago · 10 km deep · 71 km away
9. 2.612km SSW of Puebla, B.C., MXTue, May 29, 3:06 AM PDT · 17292 days ago · 10 km deep · 7 km away
10. 2.910km SW of Delta, B.C., MXTue, May 29, 1:17 PM PDT · 17292 days ago · 10 km deep · 16 km away
11. 2.769km WSW of Alberto Oviedo Mota, B.C., MXWed, May 30, 11:08 AM PDT · 17291 days ago · 6 km deep · 73 km away
12. 1.77km WSW of Holtville, CAFri, Jun 1, 1:13 AM PDT · 17289 days ago · 10 km deep · 43 km away
13. 2.12km WSW of Imperial, CAFri, Jun 1, 5:35 AM PDT · 17289 days ago · 10 km deep · 52 km away
14. 3.216km WSW of Delta, B.C., MXFri, Jun 1, 2:19 PM PDT · 17288 days ago · 10 km deep · 11 km away
15. 2.38km SSW of Puebla, B.C., MXFri, Jun 1, 2:23 PM PDT · 17288 days ago · 6 km deep · 10 km away
16. 3.114km W of Delta, B.C., MXFri, Jun 1, 2:30 PM PDT · 17288 days ago · 10 km deep · 9 km away
17. 1.75km SSW of Brawley, CAFri, Jun 1, 7:09 PM PDT · 17288 days ago · 6 km deep · 60 km away
18. 1.910km NW of Holtville, CASat, Jun 2, 4:24 PM PDT · 17287 days ago · 10 km deep · 51 km away
19. 1.84km S of Brawley, CASun, Jun 3, 8:35 AM PDT · 17287 days ago · 6 km deep · 61 km away
20. 1.86km E of Westmorland, CAMon, Jun 4, 6:37 AM PDT · 17286 days ago · 10 km deep · 72 km away
21. 2.214km WSW of Delta, B.C., MXTue, Jun 5, 9:45 PM PDT · 17284 days ago · 6 km deep · 12 km away
22. 2.03km WSW of Brawley, CAThu, Jun 7, 1:54 PM PDT · 17283 days ago · 10 km deep · 64 km away
23. 2.913km WNW of Alberto Oviedo Mota, B.C., MXThu, Jun 7, 5:38 PM PDT · 17282 days ago · 6 km deep · 17 km away
24. 2.814km SW of Delta, B.C., MXFri, Jun 8, 3:02 AM PDT · 17282 days ago · 10 km deep · 16 km away
25. 1.917km W of Westmorland, CAFri, Jun 8, 4:04 AM PDT · 17282 days ago · 10 km deep · 79 km away
26. 1.76km SW of Holtville, CASat, Jun 9, 3:50 AM PDT · 17281 days ago · 10 km deep · 40 km away
27. 2.621km N of Ocotillo, CASat, Jun 9, 7:26 PM PDT · 17280 days ago · 13 km deep · 84 km away
28. 2.611km SE of Ocotillo, CASun, Jun 10, 9:49 PM PDT · 17279 days ago · 12 km deep · 60 km away
29. 2.153km SSW of Progreso, B.C., MXMon, Jun 11, 11:32 AM PDT · 17279 days ago · 6 km deep · 55 km away
30. 1.76km E of Westmorland, CAMon, Jun 11, 9:31 PM PDT · 17278 days ago · 10 km deep · 72 km away
31. 1.66km ENE of Westmorland, CAMon, Jun 11, 9:45 PM PDT · 17278 days ago · 10 km deep · 73 km away
32. 1.54km ENE of Westmorland, CATue, Jun 12, 4:04 PM PDT · 17277 days ago · 7 km deep · 73 km away
33. 1.63km E of Westmorland, CATue, Jun 12, 4:16 PM PDT · 17277 days ago · 10 km deep · 73 km away
34. 2.03km ENE of Westmorland, CATue, Jun 12, 8:25 PM PDT · 17277 days ago · 10 km deep · 73 km away
35. 2.13km ENE of Westmorland, CATue, Jun 12, 8:25 PM PDT · 17277 days ago · 5 km deep · 73 km away
36. 1.73km NE of Westmorland, CATue, Jun 12, 8:30 PM PDT · 17277 days ago · 10 km deep · 74 km away
37. 1.74km E of Westmorland, CATue, Jun 12, 8:36 PM PDT · 17277 days ago · 10 km deep · 71 km away
38. 3.24km NE of Westmorland, CATue, Jun 12, 8:36 PM PDT · 17277 days ago · 10 km deep · 74 km away
39. 1.83km E of Westmorland, CATue, Jun 12, 8:42 PM PDT · 17277 days ago · 10 km deep · 72 km away
40. 1.74km ESE of Westmorland, CATue, Jun 12, 8:46 PM PDT · 17277 days ago · 10 km deep · 70 km away
41. 1.83km ENE of Westmorland, CATue, Jun 12, 8:48 PM PDT · 17277 days ago · 10 km deep · 73 km away
42. 1.63km E of Westmorland, CATue, Jun 12, 8:54 PM PDT · 17277 days ago · 10 km deep · 72 km away
43. 2.43km E of Westmorland, CATue, Jun 12, 9:04 PM PDT · 17277 days ago · 10 km deep · 72 km away
44. 1.73km ENE of Westmorland, CATue, Jun 12, 9:06 PM PDT · 17277 days ago · 10 km deep · 74 km away
45. 1.94km E of Westmorland, CATue, Jun 12, 9:51 PM PDT · 17277 days ago · 10 km deep · 72 km away
46. 1.83km E of Westmorland, CATue, Jun 12, 10:32 PM PDT · 17277 days ago · 10 km deep · 73 km away
47. 1.63km E of Westmorland, CATue, Jun 12, 10:42 PM PDT · 17277 days ago · 8 km deep · 72 km away
48. 1.64km E of Westmorland, CATue, Jun 12, 11:38 PM PDT · 17277 days ago · 8 km deep · 72 km away
49. 1.83km E of Westmorland, CAWed, Jun 13, 12:08 AM PDT · 17277 days ago · 10 km deep · 72 km away
50. 1.94km E of Westmorland, CAWed, Jun 13, 12:09 AM PDT · 17277 days ago · 9 km deep · 72 km away
51. 3.74km ENE of Westmorland, CAWed, Jun 13, 12:09 AM PDT · 17277 days ago · 10 km deep · 74 km away
52. 2.04km ESE of Westmorland, CAWed, Jun 13, 12:11 AM PDT · 17277 days ago · 10 km deep · 70 km away
53. 1.64km ENE of Westmorland, CAWed, Jun 13, 12:16 AM PDT · 17277 days ago · 5 km deep · 73 km away
54. 1.63km E of Westmorland, CAWed, Jun 13, 12:17 AM PDT · 17277 days ago · 8 km deep · 73 km away
55. 1.63km ENE of Westmorland, CAWed, Jun 13, 12:28 AM PDT · 17277 days ago · 10 km deep · 73 km away
56. 1.53km E of Westmorland, CAWed, Jun 13, 12:35 AM PDT · 17277 days ago · 8 km deep · 72 km away
57. 1.64km E of Westmorland, CAWed, Jun 13, 12:51 AM PDT · 17277 days ago · 10 km deep · 73 km away
58. 1.84km ENE of Westmorland, CAWed, Jun 13, 12:52 AM PDT · 17277 days ago · 7 km deep · 73 km away
59. 2.74km NE of Westmorland, CAWed, Jun 13, 1:28 AM PDT · 17277 days ago · 10 km deep · 74 km away
60. 1.72km E of Westmorland, CAWed, Jun 13, 1:31 AM PDT · 17277 days ago · 10 km deep · 72 km away

The first 60 of 198.

Before

1. 1.72km SW of Brawley, CASat, May 19, 11:08 AM PDT · 17302 days ago · 11 km deep · 63 km away
2. 2.419km WNW of Progreso, B.C., MXSat, May 19, 3:13 AM PDT · 17302 days ago · 10 km deep · 47 km away
3. 2.018km SE of Ocotillo, CAFri, May 18, 11:43 PM PDT · 17302 days ago · 17 km deep · 54 km away
4. 2.517km W of Imperial, CAWed, May 16, 10:51 PM PDT · 17304 days ago · 10 km deep · 62 km away
5. 1.96km E of Westmorland, CAWed, May 16, 10:30 AM PDT · 17305 days ago · 10 km deep · 72 km away
6. 1.725km NNE of Ocotillo, CAWed, May 16, 7:54 AM PDT · 17305 days ago · 11 km deep · 74 km away
7. 1.822km WSW of Westmorland, CAWed, May 16, 5:55 AM PDT · 17305 days ago · 7 km deep · 73 km away
8. 1.86km E of Westmorland, CAWed, May 16, 5:10 AM PDT · 17305 days ago · 10 km deep · 72 km away
9. 1.57km E of Westmorland, CAWed, May 16, 4:33 AM PDT · 17305 days ago · 10 km deep · 72 km away
10. 3.523km WSW of Westmorland, CAWed, May 16, 3:24 AM PDT · 17305 days ago · 10 km deep · 74 km away
11. 1.95km ESE of Westmorland, CATue, May 15, 11:32 PM PDT · 17305 days ago · 10 km deep · 70 km away
12. 1.85km NW of Brawley, CATue, May 15, 9:06 PM PDT · 17305 days ago · 10 km deep · 69 km away
13. 1.915km SSE of Bombay Beach, CATue, May 15, 3:07 PM PDT · 17305 days ago · 5 km deep · 95 km away
14. 1.612km W of Niland, CATue, May 15, 2:30 PM PDT · 17305 days ago · 5 km deep · 95 km away
15. 1.953km SE of Campo, CATue, May 15, 10:20 AM PDT · 17306 days ago · 6 km deep · 79 km away
16. 2.420km WNW of Progreso, B.C., MXTue, May 15, 6:10 AM PDT · 17306 days ago · 4 km deep · 48 km away
17. 1.61km NW of Westmorland, CATue, May 15, 2:59 AM PDT · 17306 days ago · 10 km deep · 74 km away
18. 1.57km E of Westmorland, CATue, May 15, 2:28 AM PDT · 17306 days ago · 10 km deep · 72 km away
19. 2.06km ENE of Westmorland, CAMon, May 14, 10:50 PM PDT · 17306 days ago · 10 km deep · 73 km away
20. 1.96km E of Westmorland, CAMon, May 14, 10:46 PM PDT · 17306 days ago · 10 km deep · 72 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci3349236. Read Thu, Oct 1, 2026, 8:43 AM UTC.