California earthquakes

M1.6 earthquake 10km SW of Idyllwild, CA

A magnitude 1.6 earthquake struck 10km SW of Idyllwild, CA on Wed, Nov 1, 1978, 10:18 AM PST (18:18 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M4.3 12km SSW of Big Bear Lake, CA. This one was a foreshock.

Idyllwild-Pine Cove 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
1.6 (mc), micro
Local time
UTC
1978-11-01 18:18:02 UTC
Depth
17.8 km (11.1 mi), shallow
Epicenter
33.680° N, 116.795° 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 0.4 km horizontally, 0.8 km in depth
Depth from
From location
Station coverage gap
108°
Stations used
19

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 164 in the 60 days after this one and 164 in the 30 days before it.

After

  1. 2.211km NNE of Morongo Valley, CA · 17498 days ago · 10 km deep · 56 km away
  2. 1.57km ENE of Anza, CA · 17498 days ago · 16 km deep · 20 km away
  3. 1.84km W of Aguanga, CA · 17498 days ago · 7 km deep · 28 km away
  4. 1.811km NNE of Lake Arrowhead, CA · 17498 days ago · 6 km deep · 79 km away
  5. 2.424km ENE of Coachella, CA · 17497 days ago · 5 km deep · 78 km away
  6. 1.86km NW of Fallbrook, CA · 17497 days ago · 4 km deep · 55 km away
  7. 1.612km ENE of Borrego Springs, CA · 17497 days ago · 15 km deep · 67 km away
  8. 1.811km NNE of Ocotillo Wells, CA · 17497 days ago · 9 km deep · 80 km away
  9. 1.515km SSE of Valle Vista, CA · 17495 days ago · 13 km deep · 9 km away
  10. 1.99km E of Yucaipa, CA · 17495 days ago · 12 km deep · 41 km away
  11. 1.95km N of Beaumont, CA · 17495 days ago · 20 km deep · 36 km away
  12. 1.912km S of Twentynine Palms, CA · 17493 days ago · 2 km deep · 78 km away
  13. 1.914km ESE of Anza, CA · 17493 days ago · 13 km deep · 30 km away
  14. 1.512km S of Twentynine Palms, CA · 17493 days ago · 2 km deep · 78 km away
  15. 1.620km ESE of Anza, CA · 17492 days ago · 10 km deep · 36 km away
  16. 1.64km NE of Joshua Tree, CA · 17492 days ago · 2 km deep · 71 km away
  17. 1.515km SSW of Oasis, CA · 17491 days ago · 10 km deep · 67 km away
  18. 2.614km N of Borrego Springs, CA · 17491 days ago · 6 km deep · 49 km away
  19. 2.910km NE of Ocotillo Wells, CA · 17490 days ago · 15 km deep · 84 km away
  20. 2.35km NE of Wildomar, CA · 17490 days ago · 8 km deep · 42 km away
  21. 2.04km W of Aguanga, CA · 17490 days ago · 7 km deep · 28 km away
  22. 1.69km SW of Idyllwild, CA · 17490 days ago · 17 km deep · 1 km away
  23. 1.820km S of La Quinta, CA · 17489 days ago · 9 km deep · 49 km away
  24. 2.54km NW of San Joaquin Hills, CA · 17489 days ago · 0 km deep · 99 km away
  25. 1.94km SE of Garnet, CA · 17489 days ago · 3 km deep · 35 km away
  26. 1.714km SE of Joshua Tree, CA · 17489 days ago · 4 km deep · 66 km away
  27. 1.823km ENE of Coachella, CA · 17489 days ago · 4 km deep · 78 km away
  28. 1.522km NE of Coachella, CA · 17488 days ago · 10 km deep · 76 km away
  29. 1.510km NNW of Ocotillo Wells, CA · 17488 days ago · 4 km deep · 76 km away
  30. 1.95km E of Calimesa, CA · 17487 days ago · 17 km deep · 39 km away
  31. 1.711km NNE of Ocotillo Wells, CA · 17487 days ago · 10 km deep · 82 km away
  32. 1.817km SE of Anza, CA · 17487 days ago · 12 km deep · 35 km away
  33. 1.710km SE of Valle Vista, CA · 17487 days ago · 15 km deep · 2 km away
  34. 2.016km SSE of Joshua Tree, CA · 17487 days ago · 0 km deep · 60 km away
  35. 1.59km E of Borrego Springs, CA · 17487 days ago · 12 km deep · 66 km away
  36. 1.514km E of Lucerne Valley, CA · 17486 days ago · 2 km deep · 82 km away
  37. 1.618km NW of Yucca Valley, CA · 17486 days ago · 7 km deep · 64 km away
  38. 1.68km N of Desert Hot Springs, CA · 17486 days ago · 3 km deep · 48 km away
  39. 2.02km E of Loma Linda, CA · 17486 days ago · 14 km deep · 58 km away
  40. 2.123km ENE of Coachella, CA · 17486 days ago · 4 km deep · 78 km away
  41. 1.938km SW of Ludlow, CA · 17486 days ago · 9 km deep · 98 km away
  42. 1.911km NE of Ocotillo Wells, CA · 17485 days ago · 17 km deep · 85 km away
  43. 1.79km SSW of Morongo Valley, CA · 17485 days ago · 6 km deep · 37 km away
  44. 1.617km ESE of Anza, CA · 17484 days ago · 13 km deep · 34 km away
  45. 3.33km NW of Rancho Cucamonga, CA · 17484 days ago · 7 km deep · 91 km away
  46. 2.311km N of Joshua Tree, CA · 17483 days ago · 6 km deep · 77 km away
  47. 1.94km WNW of Devore, CA · 17483 days ago · 6 km deep · 85 km away
  48. 1.910km WNW of Twentynine Palms, CA · 17483 days ago · 5 km deep · 80 km away
  49. 1.524km ENE of Thermal, CA · 17483 days ago · 8 km deep · 82 km away
  50. 1.616km NNE of Borrego Springs, CA · 17481 days ago · 14 km deep · 56 km away
  51. 2.137km SW of Ludlow, CA · 17481 days ago · 9 km deep · 98 km away
  52. 1.810km SSW of Warner Springs, CA · 17481 days ago · 12 km deep · 55 km away
  53. 2.023km N of Borrego Springs, CA · 17481 days ago · 11 km deep · 43 km away
  54. 1.714km SE of Anza, CA · 17480 days ago · 8 km deep · 32 km away
  55. 4.312km SSW of Big Bear Lake, CA · 17480 days ago · 14 km deep · 54 km away
  56. 2.712km SSW of Big Bear Lake, CA · 17480 days ago · 12 km deep · 55 km away
  57. 3.413km SSW of Big Bear Lake, CA · 17480 days ago · 12 km deep · 54 km away
  58. 1.612km SSW of Big Bear Lake, CA · 17480 days ago · 13 km deep · 54 km away
  59. 1.612km SSW of Big Bear Lake, CA · 17480 days ago · 14 km deep · 55 km away
  60. 1.99km SW of Lake Henshaw, CA · 17480 days ago · 16 km deep · 56 km away

The first 60 of 164.

Before

  1. 1.735km SE of Twentynine Palms, CA · 17499 days ago · 8 km deep · 97 km away
  2. 1.56km NE of Banning, CA · 17499 days ago · 22 km deep · 32 km away
  3. 2.211km ESE of Julian, CA · 17499 days ago · 15 km deep · 77 km away
  4. 1.615km N of Borrego Springs, CA · 17500 days ago · 10 km deep · 49 km away
  5. 2.07km NNE of Yucca Valley, CA · 17500 days ago · 4 km deep · 66 km away
  6. 1.67km SSE of Idyllwild, CA · 17500 days ago · 17 km deep · 8 km away
  7. 1.820km ESE of Anza, CA · 17500 days ago · 9 km deep · 35 km away
  8. 1.94km SW of Big Bear Lake, CA · 17500 days ago · 8 km deep · 62 km away
  9. 1.812km NNE of Borrego Springs, CA · 17500 days ago · 9 km deep · 56 km away
  10. 2.04km SW of Big Bear Lake, CA · 17501 days ago · 6 km deep · 62 km away
  11. 2.42km NW of Loma Linda, CA · 17501 days ago · 17 km deep · 61 km away
  12. 2.310km SSW of Idyllwild, CA · 17501 days ago · 14 km deep · 3 km away
  13. 2.510km NE of Ocotillo Wells, CA · 17501 days ago · 10 km deep · 85 km away
  14. 1.97km SSE of Idyllwild, CA · 17501 days ago · 17 km deep · 9 km away
  15. 2.04km ENE of Ocotillo Wells, CA · 17502 days ago · 12 km deep · 87 km away
  16. 1.614km NW of Twentynine Palms, CA · 17502 days ago · 10 km deep · 82 km away
  17. 1.98km W of Big Bear Lake, CA · 17502 days ago · 10 km deep · 64 km away
  18. 1.614km S of Anza, CA · 17502 days ago · 14 km deep · 29 km away
  19. 1.73km E of Borrego Springs, CA · 17502 days ago · 13 km deep · 63 km away
  20. 1.723km ENE of Coachella, CA · 17502 days ago · 3 km deep · 78 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci3343321. Read Tue, Sep 29, 2026, 7:08 AM UTC.