California earthquakes

M1.6 earthquake 8km WSW of Anza, CA

A magnitude 1.6 earthquake struck 8km WSW of Anza, CA on Fri, Dec 10, 2021, 9:50 PM PST (05:50 UTC), 3 km (2 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
2021-12-11 05:50:49 UTC
Depth
2.9 km (1.8 mi), shallow
Epicenter
33.522° N, 116.746° W
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 0.2 km horizontally, 0.6 km in depth
Magnitude uncertainty
±0.17
Depth from
From location
Station coverage gap
22°
Stations used
67

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 178 in the 60 days after this one and 41 in the 30 days before it.

After

  1. 2.318km SSW of Oasis, CA · 1758 days ago · 11 km deep · 56 km away · felt by 1
  2. 1.911km NNE of Borrego Springs, CA · 1757 days ago · 11 km deep · 42 km away
  3. 1.712km NNE of Borrego Springs, CA · 1757 days ago · 10 km deep · 42 km away
  4. 1.86km SSW of Redlands, CA · 1756 days ago · 16 km deep · 69 km away · felt by 1
  5. 1.79km SSW of Idyllwild, CA · 1755 days ago · 17 km deep · 17 km away
  6. 1.65km NNW of Fontana, CA · 1755 days ago · 6 km deep · 97 km away · felt by 4
  7. 2.33km SE of Lake Henshaw, CA · 1753 days ago · 11 km deep · 33 km away · felt by 5
  8. 1.63km WSW of Yucca Valley, CA · 1753 days ago · 12 km deep · 70 km away
  9. 1.624km ENE of Thermal, CA · 1752 days ago · 5 km deep · 81 km away
  10. 2.024km ENE of Thermal, CA · 1752 days ago · 6 km deep · 81 km away
  11. 2.023km ENE of Thermal, CA · 1752 days ago · 4 km deep · 80 km away
  12. 1.924km ENE of Thermal, CA · 1752 days ago · 6 km deep · 81 km away
  13. 1.623km ESE of Anza, CA · 1752 days ago · 13 km deep · 28 km away
  14. 2.511km E of Borrego Springs, CA · 1752 days ago · 5 km deep · 53 km away
  15. 1.811km ENE of Borrego Springs, CA · 1752 days ago · 4 km deep · 53 km away
  16. 2.224km ENE of Thermal, CA · 1752 days ago · 7 km deep · 81 km away
  17. 2.25km ENE of Calimesa, CA · 1751 days ago · 16 km deep · 58 km away
  18. 1.926km SSW of Ocotillo Wells, CA · 1751 days ago · 13 km deep · 79 km away
  19. 1.917km NNE of Borrego Springs, CA · 1751 days ago · 9 km deep · 43 km away
  20. 2.92km N of Yucaipa, CA · 1751 days ago · 11 km deep · 65 km away · felt by 37
  21. 1.85km SSW of Idyllwild, CA · 1750 days ago · 16 km deep · 20 km away
  22. 1.53km NNW of Palomar Observatory, CA · 1750 days ago · 5 km deep · 20 km away
  23. 1.76km NNE of Lake Henshaw, CA · 1749 days ago · 12 km deep · 26 km away
  24. 1.912km ENE of Borrego Springs, CA · 1749 days ago · 5 km deep · 52 km away
  25. 1.64km N of Fontana, CA · 1749 days ago · 7 km deep · 95 km away
  26. 1.85km WNW of Beaumont, CA · 1749 days ago · 15 km deep · 54 km away
  27. 1.97km ESE of Cabazon, CA · 1748 days ago · 16 km deep · 43 km away
  28. 1.86km ESE of Valle Vista, CA · 1748 days ago · 16 km deep · 23 km away
  29. 2.13km NNW of Palomar Observatory, CA · 1747 days ago · 5 km deep · 20 km away
  30. 1.78km SSE of Redlands, CA · 1747 days ago · 11 km deep · 65 km away
  31. 2.73km NW of Palomar Observatory, CA · 1747 days ago · 5 km deep · 21 km away · felt by 53
  32. 1.62km W of Devore, CA · 1747 days ago · 13 km deep · 100 km away
  33. 2.511km ENE of Borrego Springs, CA · 1746 days ago · 5 km deep · 53 km away · felt by 3
  34. 2.13km NW of Palomar Observatory, CA · 1746 days ago · 5 km deep · 21 km away
  35. 2.13km NW of Palomar Observatory, CA · 1746 days ago · 6 km deep · 21 km away
  36. 2.13km NNW of Palomar Observatory, CA · 1746 days ago · 6 km deep · 20 km away
  37. 1.76km E of Calimesa, CA · 1746 days ago · 17 km deep · 58 km away
  38. 1.77km SE of Valle Vista, CA · 1746 days ago · 15 km deep · 22 km away · felt by 1
  39. 1.88km NNW of Fontana, CA · 1746 days ago · 3 km deep · 99 km away · felt by 1
  40. 3.13km NW of Palomar Observatory, CA · 1746 days ago · 5 km deep · 21 km away · felt by 37
  41. 2.03km NW of Palomar Observatory, CA · 1746 days ago · 5 km deep · 21 km away
  42. 1.717km NNE of Indio, CA · 1746 days ago · 4 km deep · 66 km away
  43. 2.03km NW of Palomar Observatory, CA · 1746 days ago · 5 km deep · 21 km away
  44. 1.811km NNE of Banning, CA · 1744 days ago · 18 km deep · 56 km away
  45. 1.612km SSW of Borrego Springs, CA · 1744 days ago · 14 km deep · 48 km away
  46. 2.111km SSW of Borrego Springs, CA · 1744 days ago · 12 km deep · 48 km away
  47. 1.511km SSW of Borrego Springs, CA · 1744 days ago · 13 km deep · 48 km away
  48. 1.910km S of Big Bear City, CA · 1743 days ago · 7 km deep · 73 km away
  49. 1.53km NNW of Palomar Observatory, CA · 1742 days ago · 5 km deep · 20 km away
  50. 2.210km N of Borrego Springs, CA · 1742 days ago · 12 km deep · 39 km away
  51. 1.917km ESE of Julian, CA · 1741 days ago · 10 km deep · 61 km away
  52. 1.716km E of Ocotillo Wells, CA · 1741 days ago · 9 km deep · 86 km away
  53. 2.64km NW of Fontana, CA · 1741 days ago · 5 km deep · 96 km away · felt by 88
  54. 2.913km N of Indio, CA · 1741 days ago · 9 km deep · 62 km away · felt by 50
  55. 1.56km E of Ocotillo Wells, CA · 1740 days ago · 10 km deep · 76 km away
  56. 2.022km SSW of La Quinta, CA · 1740 days ago · 9 km deep · 30 km away
  57. 2.18km N of Big Bear City, CA · 1740 days ago · 7 km deep · 90 km away · felt by 1
  58. 2.03km NNW of Palomar Observatory, CA · 1739 days ago · 5 km deep · 20 km away · felt by 1
  59. 1.814km SE of Anza, CA · 1739 days ago · 10 km deep · 16 km away
  60. 1.910km W of Palomar Observatory, CA · 1738 days ago · 8 km deep · 28 km away

The first 60 of 178.

Before

  1. 1.513km NNE of Thousand Palms, CA · 1759 days ago · 9 km deep · 59 km away
  2. 1.528km NE of Indio, CA · 1760 days ago · 6 km deep · 81 km away
  3. 1.727km NNE of North Shore, CA · 1764 days ago · 11 km deep · 90 km away
  4. 2.76km SSW of Redlands, CA · 1764 days ago · 11 km deep · 70 km away · felt by 35
  5. 2.013km SE of Big Bear City, CA · 1764 days ago · 0 km deep · 74 km away
  6. 1.87km S of Redlands, CA · 1764 days ago · 14 km deep · 66 km away
  7. 2.28km S of Idyllwild, CA · 1765 days ago · 16 km deep · 17 km away · felt by 1
  8. 1.93km ESE of Ontario, CA · 1765 days ago · 4 km deep · 98 km away · felt by 7
  9. 1.621km NE of Thermal, CA · 1765 days ago · 5 km deep · 77 km away
  10. 1.611km W of Corona, CA · 1766 days ago · 9 km deep · 95 km away
  11. 1.99km SE of Valle Vista, CA · 1766 days ago · 16 km deep · 20 km away
  12. 1.77km S of Idyllwild, CA · 1766 days ago · 16 km deep · 18 km away
  13. 1.93km N of Loma Linda, CA · 1767 days ago · 13 km deep · 77 km away
  14. 1.811km WSW of Morongo Valley, CA · 1767 days ago · 16 km deep · 52 km away
  15. 1.64km W of Yucaipa, CA · 1769 days ago · 7 km deep · 66 km away
  16. 1.713km SSW of Ocotillo Wells, CA · 1769 days ago · 7 km deep · 76 km away
  17. 1.910km S of Idyllwild, CA · 1769 days ago · 15 km deep · 14 km away
  18. 1.712km NNE of Ocotillo Wells, CA · 1770 days ago · 9 km deep · 69 km away
  19. 2.114km ENE of Borrego Springs, CA · 1771 days ago · 11 km deep · 52 km away
  20. 2.314km ENE of Borrego Springs, CA · 1771 days ago · 11 km deep · 52 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci39885087. Read Sun, Oct 4, 2026, 8:46 AM UTC.