California earthquakes

M1.8 earthquake 9km NE of Morgan Hill, CA

A magnitude 1.8 earthquake struck 9km NE of Morgan Hill, CA on Tue, Dec 14, 2021, 6:31 PM PST (02:31 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M3.2 2km NNE of San Leandro, CA. This one was a foreshock.

Morgan Hill 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
1.8 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
2021-12-15 02:31:34 UTC
Depth
2.3 km (1.4 mi), shallow
Epicenter
37.182° N, 121.580° 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
33°
Stations used
51

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 102 in the 60 days after this one and 82 in the 30 days before it.

After

  1. 1.95km NNW of Hollister, CA · 1754 days ago · 10 km deep · 36 km away
  2. 1.63km SSE of San Juan Bautista, CA · 1753 days ago · 6 km deep · 41 km away
  3. 2.010km E of Alum Rock, CA · 1751 days ago · 9 km deep · 23 km away
  4. 1.77km NW of Pinnacles, CA · 1750 days ago · 7 km deep · 75 km away
  5. 2.01km N of Pacifica, CA · 1749 days ago · 8 km deep · 94 km away · felt by 14
  6. 1.91km E of Hollister, CA · 1747 days ago · 6 km deep · 41 km away · felt by 3
  7. 1.71km WNW of Danville, CA · 1747 days ago · 8 km deep · 81 km away · felt by 2
  8. 1.91km NW of Danville, CA · 1747 days ago · 8 km deep · 81 km away · felt by 3
  9. 1.62km NE of San Ramon, CA · 1746 days ago · 10 km deep · 76 km away · felt by 2
  10. 1.93km NNW of Pinnacles, CA · 1744 days ago · 7 km deep · 79 km away
  11. 1.85km NNE of Alum Rock, CA · 1744 days ago · 0 km deep · 33 km away · felt by 5
  12. 2.211km SE of Pinnacles, CA · 1743 days ago · 3 km deep · 92 km away
  13. 1.67km NNW of Pinnacles, CA · 1743 days ago · 6 km deep · 75 km away
  14. 1.912km N of Pinnacles, CA · 1743 days ago · 8 km deep · 71 km away
  15. 3.28km NNW of Pinnacles, CA · 1743 days ago · 6 km deep · 74 km away · felt by 23
  16. 2.07km NNW of Pinnacles, CA · 1743 days ago · 6 km deep · 75 km away · felt by 1
  17. 2.126km SW of Gustine, CA · 1742 days ago · 7 km deep · 38 km away
  18. 2.74km NW of Pinnacles, CA · 1742 days ago · 2 km deep · 78 km away · felt by 4
  19. 1.728km SSW of South Dos Palos, CA · 1741 days ago · 2 km deep · 83 km away
  20. 1.93km N of Pinnacles, CA · 1740 days ago · 8 km deep · 80 km away · felt by 1
  21. 2.34km NE of Fairview, CA · 1740 days ago · 7 km deep · 70 km away · felt by 27
  22. 2.05km ESE of Aromas, CA · 1738 days ago · 5 km deep · 35 km away
  23. 1.52km S of Alamo, CA · 1738 days ago · 10 km deep · 83 km away · felt by 3
  24. 2.19km SSW of Tres Pinos, CA · 1738 days ago · 2 km deep · 54 km away
  25. 2.012km SE of Pinnacles, CA · 1736 days ago · 0 km deep · 93 km away
  26. 2.19km E of Alum Rock, CA · 1736 days ago · 9 km deep · 25 km away
  27. 1.510km ENE of Milpitas, CA · 1735 days ago · 8 km deep · 38 km away
  28. 2.62km SW of Colma, CA · 1734 days ago · 8 km deep · 95 km away
  29. 2.410km SE of Pinnacles, CA · 1731 days ago · 9 km deep · 91 km away · felt by 3
  30. 2.110km SE of Pinnacles, CA · 1731 days ago · 9 km deep · 91 km away
  31. 1.74km W of Pinnacles, CA · 1731 days ago · 1 km deep · 80 km away
  32. 1.710km SE of Pinnacles, CA · 1731 days ago · 9 km deep · 91 km away
  33. 2.55km NNW of Pinnacles, CA · 1730 days ago · 3 km deep · 77 km away · felt by 1
  34. 1.711km NE of Milpitas, CA · 1730 days ago · 4 km deep · 42 km away
  35. 1.727km NE of Hollister, CA · 1730 days ago · 3 km deep · 36 km away
  36. 1.52km NE of Union City, CA · 1729 days ago · 5 km deep · 60 km away
  37. 1.72km NE of Pinnacles, CA · 1727 days ago · 9 km deep · 82 km away
  38. 1.75km WSW of Pacheco, CA · 1727 days ago · 9 km deep · 99 km away
  39. 1.62km NNE of Pinnacles, CA · 1726 days ago · 9 km deep · 81 km away
  40. 1.54km WSW of Colma, CA · 1725 days ago · 9 km deep · 98 km away
  41. 2.17km NNW of Pinnacles, CA · 1725 days ago · 4 km deep · 75 km away · felt by 1
  42. 1.61km NE of San Ramon, CA · 1725 days ago · 10 km deep · 75 km away
  43. 2.111km SSW of Brentwood, CA · 1725 days ago · 18 km deep · 74 km away
  44. 2.46km N of Diablo, CA · 1724 days ago · 13 km deep · 86 km away · felt by 25
  45. 1.99km E of Gilroy, CA · 1724 days ago · 5 km deep · 23 km away · felt by 2
  46. 2.112km S of Tres Pinos, CA · 1724 days ago · 5 km deep · 60 km away
  47. 2.39km E of Gilroy, CA · 1724 days ago · 6 km deep · 23 km away
  48. 1.62km NNE of San Ramon, CA · 1723 days ago · 11 km deep · 77 km away · felt by 2
  49. 1.98km E of Fremont, CA · 1722 days ago · 7 km deep · 48 km away · felt by 3
  50. 1.93km NNW of Pinnacles, CA · 1722 days ago · 8 km deep · 79 km away
  51. 1.77km ENE of Gilroy, CA · 1721 days ago · 9 km deep · 18 km away
  52. 2.02km SSE of Tres Pinos, CA · 1721 days ago · 7 km deep · 52 km away · felt by 1
  53. 2.217km SE of Pinnacles, CA · 1720 days ago · 7 km deep · 98 km away
  54. 1.65km SSW of Tres Pinos, CA · 1720 days ago · 7 km deep · 52 km away · felt by 1
  55. 1.64km NNW of Pinnacles, CA · 1719 days ago · 7 km deep · 78 km away
  56. 1.713km S of Tres Pinos, CA · 1718 days ago · 4 km deep · 62 km away
  57. 1.67km SW of Ridgemark, CA · 1717 days ago · 10 km deep · 48 km away
  58. 1.65km N of Lafayette, CA · 1717 days ago · 6 km deep · 96 km away
  59. 1.64km N of Lafayette, CA · 1716 days ago · 5 km deep · 95 km away · felt by 1
  60. 2.25km WNW of Dublin, CA · 1716 days ago · 6 km deep · 71 km away · felt by 12

The first 60 of 102.

Before

  1. 2.05km SSW of Tres Pinos, CA · 1754 days ago · 8 km deep · 52 km away
  2. 2.42km E of Pinnacles, CA · 1754 days ago · 4 km deep · 83 km away · felt by 2
  3. 1.614km SE of Tres Pinos, CA · 1754 days ago · 8 km deep · 63 km away
  4. 1.63km SSW of Half Moon Bay, CA · 1755 days ago · 10 km deep · 81 km away
  5. 1.62km E of Pinnacles, CA · 1755 days ago · 3 km deep · 83 km away
  6. 2.32km SW of Discovery Bay, CA · 1755 days ago · 18 km deep · 80 km away
  7. 2.23km SSW of Half Moon Bay, CA · 1756 days ago · 10 km deep · 81 km away
  8. 1.63km SE of Concord, CA · 1756 days ago · 12 km deep · 93 km away
  9. 1.76km NW of Pinnacles, CA · 1756 days ago · 7 km deep · 76 km away
  10. 2.512km S of Tres Pinos, CA · 1756 days ago · 4 km deep · 60 km away · felt by 3
  11. 1.812km S of Tres Pinos, CA · 1756 days ago · 4 km deep · 60 km away
  12. 1.911km S of Tres Pinos, CA · 1756 days ago · 5 km deep · 59 km away
  13. 1.63km SSW of Half Moon Bay, CA · 1757 days ago · 10 km deep · 81 km away
  14. 1.511km S of Tres Pinos, CA · 1758 days ago · 4 km deep · 59 km away
  15. 2.212km S of Tres Pinos, CA · 1758 days ago · 5 km deep · 60 km away
  16. 1.87km ENE of Gilroy, CA · 1759 days ago · 9 km deep · 19 km away
  17. 2.22km E of Pacheco, CA · 1761 days ago · 16 km deep · 99 km away
  18. 1.66km WSW of Colma, CA · 1761 days ago · 9 km deep · 99 km away · felt by 2
  19. 1.912km S of Tres Pinos, CA · 1762 days ago · 4 km deep · 60 km away · felt by 2
  20. 1.79km SSW of Tres Pinos, CA · 1762 days ago · 3 km deep · 56 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc73663831. Read Sun, Oct 4, 2026, 9:46 AM UTC.