California earthquakes

M3.5 earthquake 9km NE of Calexico, CA

A magnitude 3.5 earthquake struck 9km NE of Calexico, CA on Wed, Oct 31, 1979, 3:43 AM PST (11:43 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M3.9 13km SSW of Ocotillo, CA. This one was a foreshock.

Calexico forecastMore in California

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
3.5 (ml), minor
Local time
UTC
1979-10-31 11:43:46 UTC
Depth
15.0 km (9.3 mi), shallow
Epicenter
32.735° N, 115.431° W
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 1.3 km horizontally, 31.6 km in depth
Magnitude uncertainty
±0.10
Depth from
Operator assigned
Station coverage gap
147°
Stations used
45

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 192 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 2.64km S of Brawley, CA · 17114 days ago · 15 km deep · 25 km away
  2. 1.810km NE of Mexicali, B.C., MX · 17114 days ago · 15 km deep · 4 km away
  3. 2.312km SSW of Ocotillo, CA · 17114 days ago · 9 km deep · 59 km away
  4. 2.510km SSW of Salton City, CA · 17113 days ago · 16 km deep · 77 km away
  5. 2.615km WNW of Delta, B.C., MX · 17113 days ago · 15 km deep · 37 km away
  6. 1.513km SE of Ocotillo, CA · 17113 days ago · 10 km deep · 45 km away
  7. 1.67km W of Calipatria, CA · 17112 days ago · 8 km deep · 47 km away
  8. 1.518km ESE of Pine Valley, CA · 17112 days ago · 3 km deep · 86 km away
  9. 2.08km SSW of Holtville, CA · 17112 days ago · 15 km deep · 2 km away
  10. 1.88km SW of Holtville, CA · 17112 days ago · 15 km deep · 3 km away
  11. 1.68km ENE of Puebla, B.C., MX · 17112 days ago · 2 km deep · 21 km away
  12. 1.58km SW of Brawley, CA · 17112 days ago · 10 km deep · 25 km away
  13. 1.610km WNW of Calipatria, CA · 17111 days ago · 6 km deep · 49 km away
  14. 2.87km SSW of Holtville, CA · 17111 days ago · 15 km deep · 3 km away
  15. 1.99km W of Puebla, B.C., MX · 17111 days ago · 6 km deep · 19 km away
  16. 2.48km SW of Holtville, CA · 17111 days ago · 15 km deep · 3 km away
  17. 2.24km ESE of Westmorland, CA · 17110 days ago · 11 km deep · 35 km away
  18. 1.710km SW of Salton City, CA · 17110 days ago · 5 km deep · 77 km away
  19. 2.35km ESE of Westmorland, CA · 17110 days ago · 13 km deep · 35 km away
  20. 2.312km SSW of Ocotillo, CA · 17109 days ago · 13 km deep · 59 km away
  21. 1.88km SSW of Holtville, CA · 17109 days ago · 15 km deep · 2 km away
  22. 3.05km SSW of Brawley, CA · 17109 days ago · 15 km deep · 26 km away
  23. 2.46km N of Imperial, CA · 17109 days ago · 13 km deep · 24 km away
  24. 2.89km NE of Calexico, CA · 17109 days ago · 15 km deep · 0 km away
  25. 3.42km SW of Guadalupe Victoria, B.C., MX · 17109 days ago · 15 km deep · 59 km away
  26. 2.17km WNW of Estacion Coahuila, B.C., MX · 17108 days ago · 6 km deep · 67 km away
  27. 2.12km NW of Guadalupe Victoria, B.C., MX · 17108 days ago · 6 km deep · 56 km away
  28. 1.58km WSW of Holtville, CA · 17108 days ago · 10 km deep · 6 km away
  29. 1.522km WSW of Progreso, B.C., MX · 17108 days ago · 3 km deep · 43 km away
  30. 1.84km S of Brawley, CA · 17107 days ago · 15 km deep · 25 km away
  31. 1.710km W of Alberto Oviedo Mota, B.C., MX · 17107 days ago · 6 km deep · 60 km away
  32. 1.613km SW of Ocotillo, CA · 17107 days ago · 5 km deep · 61 km away
  33. 1.95km E of Westmorland, CA · 17107 days ago · 13 km deep · 36 km away
  34. 2.25km NE of Imperial, CA · 17106 days ago · 15 km deep · 18 km away
  35. 2.213km NNW of Ocotillo Wells, CA · 17106 days ago · 11 km deep · 91 km away
  36. 2.05km NE of Imperial, CA · 17105 days ago · 6 km deep · 18 km away
  37. 2.68km NE of Imperial, CA · 17105 days ago · 13 km deep · 19 km away
  38. 1.58km SW of Holtville, CA · 17104 days ago · 15 km deep · 2 km away
  39. 1.86km S of Brawley, CA · 17104 days ago · 14 km deep · 23 km away
  40. 1.95km WSW of Brawley, CA · 17104 days ago · 5 km deep · 30 km away
  41. 1.99km N of Westmorland, CA · 17104 days ago · 8 km deep · 47 km away
  42. 1.516km SW of Ocotillo, CA · 17104 days ago · 8 km deep · 64 km away
  43. 2.712km SSW of Ocotillo, CA · 17103 days ago · 14 km deep · 58 km away
  44. 1.95km ESE of Imperial, CA · 17103 days ago · 6 km deep · 14 km away
  45. 3.44km WSW of Guadalupe Victoria, B.C., MX · 17103 days ago · 15 km deep · 58 km away
  46. 2.28km SW of Holtville, CA · 17103 days ago · 15 km deep · 2 km away
  47. 1.917km W of Westmorland, CA · 17102 days ago · 11 km deep · 47 km away
  48. 2.02km W of Brawley, CA · 17102 days ago · 11 km deep · 30 km away
  49. 2.04km SSW of Brawley, CA · 17101 days ago · 14 km deep · 26 km away
  50. 1.76km ENE of Imperial, CA · 17100 days ago · 8 km deep · 16 km away
  51. 2.610km WSW of Alberto Oviedo Mota, B.C., MX · 17100 days ago · 15 km deep · 63 km away
  52. 1.57km SSW of Calipatria, CA · 17099 days ago · 0 km deep · 39 km away
  53. 2.28km WSW of Holtville, CA · 17099 days ago · 15 km deep · 7 km away
  54. 1.511km NE of Ocotillo Wells, CA · 17099 days ago · 6 km deep · 77 km away
  55. 1.89km WSW of Progreso, B.C., MX · 17098 days ago · 10 km deep · 31 km away
  56. 2.37km ENE of Delta, B.C., MX · 17098 days ago · 6 km deep · 48 km away
  57. 2.111km SW of Westmorland, CA · 17097 days ago · 13 km deep · 35 km away
  58. 3.31km ENE of Guadalupe Victoria, B.C., MX · 17097 days ago · 10 km deep · 59 km away
  59. 2.05km W of Estacion Coahuila, B.C., MX · 17097 days ago · 6 km deep · 70 km away
  60. 2.511km SW of Westmorland, CA · 17097 days ago · 13 km deep · 36 km away

The first 60 of 192.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci3353501 (also filed as usp00013sy). Read Tue, Sep 22, 2026, 11:17 AM UTC.