California earthquakes

M1.6 earthquake 23km ESE of Anza, CA

A magnitude 1.6 earthquake struck 23km ESE of Anza, CA on Thu, Dec 16, 2021, 10:49 PM PST (06:49 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M4.0 5km WSW of Palomar Observatory, CA. This one was a foreshock.

Anza forecastMore in California

Map

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

Open the live map with earthquakes

The earthquake

Magnitude
1.6 (ML, local (Richter)), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
2021-12-17 06:49:04 UTC
Depth
12.5 km (7.8 mi), shallow
Epicenter
33.468° N, 116.448° 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 0.2 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.16
Depth from
From location
Station coverage gap
45°
Stations used
53

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 177 in the 60 days after this one and 58 in the 30 days before it.

After

  1. 2.511km E of Borrego Springs, CA · 1752 days ago · 5 km deep · 28 km away
  2. 1.811km ENE of Borrego Springs, CA · 1752 days ago · 4 km deep · 28 km away
  3. 1.66km ENE of Westmorland, CA · 1752 days ago · 8 km deep · 94 km away
  4. 2.224km ENE of Thermal, CA · 1752 days ago · 7 km deep · 58 km away
  5. 2.25km ENE of Calimesa, CA · 1751 days ago · 16 km deep · 78 km away
  6. 1.926km SSW of Ocotillo Wells, CA · 1751 days ago · 13 km deep · 62 km away
  7. 1.917km NNE of Borrego Springs, CA · 1751 days ago · 9 km deep · 16 km away
  8. 2.92km N of Yucaipa, CA · 1751 days ago · 11 km deep · 85 km away · felt by 37
  9. 1.85km SSW of Idyllwild, CA · 1750 days ago · 16 km deep · 38 km away
  10. 1.53km NNW of Palomar Observatory, CA · 1750 days ago · 5 km deep · 41 km away
  11. 1.76km NNE of Lake Henshaw, CA · 1749 days ago · 12 km deep · 34 km away
  12. 1.912km ENE of Borrego Springs, CA · 1749 days ago · 5 km deep · 26 km away
  13. 1.85km WNW of Beaumont, CA · 1749 days ago · 15 km deep · 75 km away
  14. 1.97km ESE of Cabazon, CA · 1748 days ago · 16 km deep · 54 km away
  15. 1.86km ESE of Valle Vista, CA · 1748 days ago · 16 km deep · 46 km away
  16. 2.13km NNW of Palomar Observatory, CA · 1747 days ago · 5 km deep · 41 km away
  17. 1.78km SSE of Redlands, CA · 1747 days ago · 11 km deep · 88 km away
  18. 2.73km NW of Palomar Observatory, CA · 1747 days ago · 5 km deep · 41 km away · felt by 53
  19. 1.69km SW of Niland, CA · 1747 days ago · 2 km deep · 85 km away
  20. 2.511km ENE of Borrego Springs, CA · 1746 days ago · 5 km deep · 28 km away · felt by 3
  21. 2.13km NW of Palomar Observatory, CA · 1746 days ago · 5 km deep · 41 km away
  22. 2.13km NW of Palomar Observatory, CA · 1746 days ago · 6 km deep · 42 km away
  23. 2.919km W of Westmorland, CA · 1746 days ago · 7 km deep · 75 km away · felt by 1
  24. 2.13km NNW of Palomar Observatory, CA · 1746 days ago · 6 km deep · 41 km away
  25. 1.76km E of Calimesa, CA · 1746 days ago · 17 km deep · 77 km away
  26. 1.77km SE of Valle Vista, CA · 1746 days ago · 15 km deep · 45 km away · felt by 1
  27. 3.13km NW of Palomar Observatory, CA · 1746 days ago · 5 km deep · 42 km away · felt by 37
  28. 2.03km NW of Palomar Observatory, CA · 1746 days ago · 5 km deep · 42 km away
  29. 1.717km NNE of Indio, CA · 1746 days ago · 4 km deep · 51 km away
  30. 2.03km NW of Palomar Observatory, CA · 1746 days ago · 5 km deep · 42 km away
  31. 1.911km W of Calipatria, CA · 1744 days ago · 8 km deep · 84 km away
  32. 1.811km NNE of Banning, CA · 1744 days ago · 18 km deep · 72 km away
  33. 1.612km SSW of Borrego Springs, CA · 1744 days ago · 14 km deep · 33 km away
  34. 2.111km SSW of Borrego Springs, CA · 1744 days ago · 12 km deep · 33 km away
  35. 1.511km SSW of Borrego Springs, CA · 1744 days ago · 13 km deep · 33 km away
  36. 1.910km S of Big Bear City, CA · 1743 days ago · 7 km deep · 86 km away
  37. 1.53km NNW of Palomar Observatory, CA · 1742 days ago · 5 km deep · 41 km away
  38. 2.210km N of Borrego Springs, CA · 1742 days ago · 12 km deep · 15 km away
  39. 1.614km WSW of Niland, CA · 1741 days ago · 7 km deep · 79 km away
  40. 1.917km ESE of Julian, CA · 1741 days ago · 10 km deep · 47 km away
  41. 1.716km E of Ocotillo Wells, CA · 1741 days ago · 9 km deep · 60 km away
  42. 2.913km N of Indio, CA · 1741 days ago · 9 km deep · 47 km away · felt by 50
  43. 1.56km E of Ocotillo Wells, CA · 1740 days ago · 10 km deep · 51 km away
  44. 2.022km SSW of La Quinta, CA · 1740 days ago · 9 km deep · 3 km away
  45. 2.03km NNW of Palomar Observatory, CA · 1739 days ago · 5 km deep · 41 km away · felt by 1
  46. 1.814km SE of Anza, CA · 1739 days ago · 10 km deep · 13 km away
  47. 1.910km W of Palomar Observatory, CA · 1738 days ago · 8 km deep · 50 km away
  48. 1.69km W of Palomar Observatory, CA · 1738 days ago · 6 km deep · 50 km away
  49. 2.010km E of Pala, CA · 1738 days ago · 7 km deep · 50 km away
  50. 1.96km W of Bombay Beach, CA · 1738 days ago · 2 km deep · 62 km away
  51. 3.02km NW of Palomar Observatory, CA · 1738 days ago · 5 km deep · 41 km away · felt by 27
  52. 1.83km NNW of Palomar Observatory, CA · 1738 days ago · 5 km deep · 41 km away
  53. 2.62km NW of Palomar Observatory, CA · 1738 days ago · 5 km deep · 41 km away · felt by 2
  54. 1.93km NNW of Palomar Observatory, CA · 1738 days ago · 6 km deep · 41 km away
  55. 1.75km N of Cabazon, CA · 1738 days ago · 12 km deep · 62 km away
  56. 3.43km SW of Redlands, CA · 1738 days ago · 14 km deep · 94 km away · felt by 509
  57. 2.12km NNW of Palomar Observatory, CA · 1737 days ago · 5 km deep · 41 km away
  58. 1.63km W of Redlands, CA · 1737 days ago · 14 km deep · 96 km away
  59. 1.612km NE of Ocotillo Wells, CA · 1737 days ago · 10 km deep · 47 km away
  60. 1.614km SSE of Valle Vista, CA · 1736 days ago · 13 km deep · 40 km away

The first 60 of 177.

Before

  1. 1.924km ENE of Thermal, CA · 1752 days ago · 6 km deep · 58 km away
  2. 2.023km ENE of Thermal, CA · 1752 days ago · 4 km deep · 58 km away
  3. 2.024km ENE of Thermal, CA · 1752 days ago · 6 km deep · 58 km away
  4. 1.624km ENE of Thermal, CA · 1752 days ago · 5 km deep · 59 km away
  5. 1.63km WSW of Yucca Valley, CA · 1753 days ago · 12 km deep · 70 km away
  6. 1.65km WSW of Niland, CA · 1753 days ago · 3 km deep · 87 km away
  7. 2.33km SE of Lake Henshaw, CA · 1753 days ago · 11 km deep · 39 km away · felt by 5
  8. 1.79km SSW of Idyllwild, CA · 1755 days ago · 17 km deep · 37 km away
  9. 1.813km WNW of Calipatria, CA · 1756 days ago · 5 km deep · 82 km away
  10. 1.86km SSW of Redlands, CA · 1756 days ago · 16 km deep · 93 km away · felt by 1
  11. 1.712km NNE of Borrego Springs, CA · 1757 days ago · 10 km deep · 16 km away
  12. 1.911km NNE of Borrego Springs, CA · 1757 days ago · 11 km deep · 16 km away
  13. 2.318km SSW of Oasis, CA · 1758 days ago · 11 km deep · 29 km away · felt by 1
  14. 1.68km WSW of Anza, CA · 1758 days ago · 3 km deep · 28 km away
  15. 1.513km NNE of Thousand Palms, CA · 1759 days ago · 9 km deep · 52 km away
  16. 1.528km NE of Indio, CA · 1760 days ago · 6 km deep · 63 km away
  17. 1.524km WSW of Westmorland, CA · 1760 days ago · 9 km deep · 79 km away
  18. 1.610km WNW of Calipatria, CA · 1761 days ago · 6 km deep · 85 km away · felt by 1
  19. 1.811km N of Westmorland, CA · 1762 days ago · 8 km deep · 84 km away
  20. 1.727km NNE of North Shore, CA · 1763 days ago · 11 km deep · 67 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci40129328. Read Sun, Oct 4, 2026, 8:42 AM UTC.