California earthquakes

M1.5 earthquake 20km ESE of Anza, CA

A magnitude 1.5 earthquake struck 20km ESE of Anza, CA on Fri, Feb 27, 1981, 7:19 AM PST (15:19 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M5.8 The 1981 Westmorland, California Earthquake. This one was a foreshock.

Anza 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
1.5 (Mh), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
1981-02-27 15:19:09 UTC
Depth
7.9 km (4.9 mi), shallow
Epicenter
33.470° N, 116.488° 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 0.5 km horizontally, 1.7 km in depth
Magnitude uncertainty
±0.26
Depth from
From location
Station coverage gap
55°
Stations used
24

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 174 in the 30 days before it.

After

  1. 1.99km NE of Aguanga, CA · 16651 days ago · 6 km deep · 28 km away
  2. 2.05km NE of Borrego Springs, CA · 16651 days ago · 12 km deep · 24 km away
  3. 1.612km NNE of Borrego Springs, CA · 16651 days ago · 11 km deep · 21 km away
  4. 1.69km NE of Aguanga, CA · 16650 days ago · 3 km deep · 28 km away
  5. 2.64km NNE of Westmorland, CA · 16650 days ago · 10 km deep · 94 km away
  6. 2.05km NE of Westmorland, CA · 16650 days ago · 10 km deep · 94 km away
  7. 1.95km NE of Westmorland, CA · 16650 days ago · 10 km deep · 95 km away
  8. 2.010km NE of Aguanga, CA · 16650 days ago · 3 km deep · 26 km away
  9. 1.68km SW of Beaumont, CA · 16648 days ago · 15 km deep · 68 km away
  10. 1.717km S of Borrego Springs, CA · 16648 days ago · 5 km deep · 42 km away
  11. 1.77km SSE of Big Bear Lake, CA · 16648 days ago · 10 km deep · 87 km away
  12. 1.69km NE of Aguanga, CA · 16648 days ago · 4 km deep · 27 km away
  13. 1.98km NE of Aguanga, CA · 16648 days ago · 4 km deep · 28 km away
  14. 1.67km NE of Aguanga, CA · 16647 days ago · 10 km deep · 30 km away
  15. 1.912km WSW of Morongo Valley, CA · 16647 days ago · 15 km deep · 62 km away
  16. 1.612km WSW of Morongo Valley, CA · 16647 days ago · 15 km deep · 62 km away
  17. 2.215km WNW of Ocotillo, CA · 16647 days ago · 14 km deep · 82 km away
  18. 1.86km NNE of Beaumont, CA · 16646 days ago · 18 km deep · 71 km away
  19. 1.64km W of Redlands, CA · 16646 days ago · 5 km deep · 94 km away
  20. 1.99km SSW of Idyllwild, CA · 16646 days ago · 12 km deep · 33 km away
  21. 1.69km SW of Beaumont, CA · 16645 days ago · 15 km deep · 68 km away
  22. 1.77km SW of Salton City, CA · 16644 days ago · 5 km deep · 51 km away
  23. 1.52km ENE of Banning, CA · 16644 days ago · 3 km deep · 62 km away
  24. 1.82km NE of Banning, CA · 16644 days ago · 3 km deep · 62 km away
  25. 2.010km NE of Aguanga, CA · 16644 days ago · 4 km deep · 27 km away
  26. 2.02km SE of Garnet, CA · 16643 days ago · 11 km deep · 47 km away
  27. 2.05km NE of Westmorland, CA · 16643 days ago · 10 km deep · 95 km away
  28. 2.25km NNE of Westmorland, CA · 16643 days ago · 10 km deep · 94 km away
  29. 3.05km NNE of Westmorland, CA · 16643 days ago · 10 km deep · 94 km away
  30. 2.54km NE of Westmorland, CA · 16643 days ago · 8 km deep · 95 km away
  31. 3.55km NNE of Westmorland, CA · 16643 days ago · 10 km deep · 94 km away
  32. 2.511km NE of Aguanga, CA · 16643 days ago · 5 km deep · 27 km away
  33. 2.15km NE of Westmorland, CA · 16643 days ago · 10 km deep · 96 km away
  34. 1.610km WSW of Anza, CA · 16642 days ago · -1 km deep · 27 km away
  35. 2.410km NE of Aguanga, CA · 16642 days ago · 5 km deep · 27 km away
  36. 1.61km ESE of Garnet, CA · 16642 days ago · 13 km deep · 48 km away
  37. 1.710km NE of Aguanga, CA · 16642 days ago · 4 km deep · 27 km away
  38. 1.78km N of Westmorland, CA · 16641 days ago · 8 km deep · 91 km away
  39. 1.624km NNW of Yucca Valley, CA · 16641 days ago · 2 km deep · 94 km away
  40. 1.614km NE of Thousand Palms, CA · 16641 days ago · 0 km deep · 53 km away
  41. 1.59km S of Yucca Valley, CA · 16641 days ago · 8 km deep · 62 km away
  42. 1.818km NNE of Pine Valley, CA · 16641 days ago · 3 km deep · 57 km away
  43. 1.84km NNE of Cabazon, CA · 16641 days ago · 14 km deep · 59 km away
  44. 1.64km E of San Jacinto, CA · 16640 days ago · 10 km deep · 53 km away
  45. 2.09km NE of Aguanga, CA · 16640 days ago · 5 km deep · 28 km away
  46. 2.44km SSW of Niland, CA · 16639 days ago · 9 km deep · 93 km away
  47. 1.69km NE of Aguanga, CA · 16639 days ago · 4 km deep · 28 km away
  48. 2.33km SSW of Niland, CA · 16639 days ago · 4 km deep · 93 km away
  49. 1.712km N of Borrego Springs, CA · 16639 days ago · 12 km deep · 15 km away
  50. 1.93km SSW of Niland, CA · 16639 days ago · 3 km deep · 93 km away
  51. 1.512km SSE of Joshua Tree, CA · 16639 days ago · -1 km deep · 68 km away
  52. 1.72km SW of Niland, CA · 16639 days ago · 6 km deep · 93 km away
  53. 2.04km SW of Niland, CA · 16639 days ago · 0 km deep · 92 km away
  54. 3.33km WSW of Niland, CA · 16639 days ago · 6 km deep · 92 km away
  55. 1.84km SW of Niland, CA · 16639 days ago · 5 km deep · 92 km away
  56. 2.68km NE of Aguanga, CA · 16639 days ago · 4 km deep · 28 km away
  57. 1.62km W of Lake Henshaw, CA · 16638 days ago · 5 km deep · 38 km away
  58. 2.43km SW of Niland, CA · 16638 days ago · 9 km deep · 92 km away
  59. 1.79km WNW of Calipatria, CA · 16638 days ago · 6 km deep · 89 km away
  60. 1.55km SSW of Niland, CA · 16638 days ago · 1 km deep · 93 km away

The first 60 of 192.

Before

  1. 1.518km NNE of Indio, CA · 16652 days ago · 5 km deep · 55 km away
  2. 1.712km NE of Borrego Springs, CA · 16652 days ago · 9 km deep · 25 km away
  3. 1.910km NE of Aguanga, CA · 16652 days ago · 5 km deep · 28 km away
  4. 2.68km N of Westmorland, CA · 16652 days ago · 14 km deep · 91 km away
  5. 1.518km S of Joshua Tree, CA · 16652 days ago · 2 km deep · 60 km away
  6. 1.72km SSE of Loma Linda, CA · 16652 days ago · 15 km deep · 94 km away
  7. 2.322km W of Westmorland, CA · 16652 days ago · 11 km deep · 77 km away
  8. 1.911km NE of Trabuco Canyon, CA · 16652 days ago · 7 km deep · 98 km away
  9. 1.918km SSE of Joshua Tree, CA · 16652 days ago · 5 km deep · 60 km away
  10. 2.18km NE of Aguanga, CA · 16652 days ago · 3 km deep · 28 km away
  11. 1.69km WNW of Twentynine Palms, CA · 16652 days ago · 8 km deep · 85 km away
  12. 1.722km NNW of Yucca Valley, CA · 16653 days ago · 2 km deep · 93 km away
  13. 1.66km E of Westmorland, CA · 16653 days ago · 10 km deep · 100 km away
  14. 1.510km NE of Aguanga, CA · 16654 days ago · 4 km deep · 27 km away
  15. 2.323km WSW of Westmorland, CA · 16654 days ago · 10 km deep · 82 km away
  16. 2.52km ESE of Loma Linda, CA · 16656 days ago · 15 km deep · 94 km away
  17. 1.76km SE of Loma Linda, CA · 16656 days ago · 15 km deep · 91 km away
  18. 1.95km NE of Westmorland, CA · 16656 days ago · 11 km deep · 96 km away
  19. 1.85km NE of Westmorland, CA · 16656 days ago · 12 km deep · 95 km away
  20. 1.93km E of Colton, CA · 16656 days ago · 16 km deep · 99 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci531387. Read Thu, Oct 1, 2026, 2:51 AM UTC.