California earthquakes

M1.8 earthquake 15km NNE of Morgan Hill, CA

A magnitude 1.8 earthquake struck 15km NNE of Morgan Hill, CA on Fri, Jan 15, 2021, 11:20 AM PST (19:20 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M4.2 4km SE of Aromas, 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
2021-01-15 19:20:21 UTC
Depth
8.3 km (5.1 mi), shallow
Epicenter
37.263° N, 121.618° 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, 0.4 km in depth
Magnitude uncertainty
±0.30
Depth from
From location
Station coverage gap
45°
Stations used
48

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 127 in the 60 days after this one and 106 in the 30 days before it.

After

  1. 4.24km SE of Aromas, CA · 2087 days ago · 8 km deep · 44 km away · felt by 13,081 · tsunami flag
  2. 2.03km ESE of Aromas, CA · 2087 days ago · 8 km deep · 43 km away · felt by 10
  3. 3.04km SE of Aromas, CA · 2087 days ago · 8 km deep · 44 km away · felt by 483
  4. 1.94km SE of Aromas, CA · 2087 days ago · 7 km deep · 45 km away · felt by 64
  5. 1.65km SE of Aromas, CA · 2087 days ago · 6 km deep · 44 km away · felt by 9
  6. 1.611km NNE of Pinnacles, CA · 2086 days ago · 9 km deep · 87 km away
  7. 2.22km S of Los Altos Hills, CA · 2086 days ago · 5 km deep · 47 km away · felt by 10
  8. 1.52km ESE of Aromas, CA · 2085 days ago · 8 km deep · 43 km away
  9. 1.611km NW of Pinnacles, CA · 2085 days ago · 7 km deep · 81 km away
  10. 1.610km ESE of Alum Rock, CA · 2085 days ago · 2 km deep · 12 km away
  11. 1.64km ESE of Aromas, CA · 2085 days ago · 6 km deep · 43 km away
  12. 1.811km ENE of Tres Pinos, CA · 2085 days ago · 8 km deep · 61 km away · felt by 3
  13. 1.56km SW of Gilroy, CA · 2084 days ago · 2 km deep · 33 km away
  14. 2.216km NNE of Pinnacles, CA · 2084 days ago · 7 km deep · 81 km away
  15. 1.93km ESE of Aromas, CA · 2084 days ago · 7 km deep · 43 km away
  16. 1.83km ESE of Aromas, CA · 2084 days ago · 7 km deep · 43 km away
  17. 2.18km ENE of Alum Rock, CA · 2084 days ago · 7 km deep · 18 km away
  18. 1.63km ENE of Walnut Creek, CA · 2083 days ago · 10 km deep · 82 km away
  19. 1.86km E of Milpitas, CA · 2083 days ago · 2 km deep · 26 km away
  20. 1.85km SW of Gilroy, CA · 2083 days ago · 4 km deep · 33 km away
  21. 2.06km WNW of San Francisco Zoo, CA · 2083 days ago · 9 km deep · 100 km away
  22. 2.16km S of Gilroy, CA · 2083 days ago · 4 km deep · 34 km away
  23. 1.96km S of Gilroy, CA · 2083 days ago · 4 km deep · 35 km away
  24. 1.511km ENE of Pinnacles, CA · 2083 days ago · 9 km deep · 95 km away
  25. 2.213km NW of Pinnacles, CA · 2083 days ago · 5 km deep · 79 km away
  26. 1.613km SSW of Ridgemark, CA · 2083 days ago · 7 km deep · 63 km away
  27. 1.93km S of Los Altos Hills, CA · 2083 days ago · 6 km deep · 47 km away · felt by 13
  28. 1.910km NE of Pinnacles, CA · 2082 days ago · 7 km deep · 91 km away
  29. 3.01km W of Concord, CA · 2082 days ago · 15 km deep · 86 km away · felt by 728
  30. 1.913km E of Tres Pinos, CA · 2079 days ago · 10 km deep · 67 km away
  31. 1.616km S of Tres Pinos, CA · 2076 days ago · 6 km deep · 75 km away
  32. 2.115km SSE of Tres Pinos, CA · 2076 days ago · 4 km deep · 74 km away · felt by 2
  33. 2.05km SW of Danville, CA · 2076 days ago · 9 km deep · 69 km away · felt by 1
  34. 1.92km NE of Pinnacles, CA · 2075 days ago · 9 km deep · 91 km away
  35. 1.92km NW of Orinda, CA · 2075 days ago · 8 km deep · 87 km away · felt by 2
  36. 2.210km NW of Pinnacles, CA · 2074 days ago · 7 km deep · 82 km away
  37. 1.616km S of Tres Pinos, CA · 2074 days ago · 6 km deep · 74 km away
  38. 1.618km NE of Pinnacles, CA · 2073 days ago · 15 km deep · 88 km away
  39. 2.12km WNW of Castro Valley, CA · 2071 days ago · 5 km deep · 65 km away · felt by 12
  40. 1.75km N of Aromas, CA · 2071 days ago · 6 km deep · 37 km away
  41. 1.710km NW of Pinnacles, CA · 2070 days ago · 7 km deep · 82 km away
  42. 1.912km ESE of Gilroy, CA · 2070 days ago · 5 km deep · 37 km away
  43. 2.415km NW of Pinnacles, CA · 2070 days ago · 5 km deep · 77 km away · felt by 3
  44. 2.63km ESE of Berkeley, CA · 2070 days ago · 10 km deep · 87 km away · felt by 661
  45. 1.53km ESE of Berkeley, CA · 2070 days ago · 10 km deep · 86 km away · felt by 6
  46. 1.79km NNW of Hollister, CA · 2069 days ago · 6 km deep · 41 km away
  47. 1.616km S of Tres Pinos, CA · 2069 days ago · 7 km deep · 75 km away
  48. 1.812km ESE of Gilroy, CA · 2069 days ago · 6 km deep · 38 km away
  49. 1.912km ESE of Gilroy, CA · 2068 days ago · 6 km deep · 37 km away
  50. 2.212km WSW of Saratoga, CA · 2068 days ago · 10 km deep · 47 km away · felt by 2
  51. 1.86km NNW of Pinnacles, CA · 2067 days ago · 6 km deep · 86 km away
  52. 1.610km SSW of Tres Pinos, CA · 2067 days ago · 2 km deep · 66 km away
  53. 2.09km E of Alum Rock, CA · 2067 days ago · 9 km deep · 16 km away
  54. 2.29km SSW of Tres Pinos, CA · 2067 days ago · 1 km deep · 65 km away
  55. 3.210km NE of Milpitas, CA · 2065 days ago · 5 km deep · 32 km away · felt by 436
  56. 1.810km NE of Milpitas, CA · 2065 days ago · 4 km deep · 32 km away · felt by 2
  57. 1.510km NE of Milpitas, CA · 2065 days ago · 4 km deep · 32 km away · felt by 1
  58. 1.610km NE of Milpitas, CA · 2065 days ago · 4 km deep · 32 km away
  59. 1.611km NE of Milpitas, CA · 2065 days ago · 4 km deep · 32 km away
  60. 2.011km NE of Milpitas, CA · 2064 days ago · 4 km deep · 32 km away

The first 60 of 127.

Before

  1. 1.73km S of Los Altos Hills, CA · 2089 days ago · 5 km deep · 47 km away
  2. 2.12km WNW of Concord, CA · 2089 days ago · 13 km deep · 87 km away · felt by 106
  3. 3.62km W of Concord, CA · 2089 days ago · 15 km deep · 87 km away · felt by 3,784
  4. 2.810km SSE of San Juan Bautista, CA · 2091 days ago · 5 km deep · 56 km away · felt by 26
  5. 2.02km NNW of Kensington, CA · 2091 days ago · 11 km deep · 94 km away · felt by 15
  6. 1.611km SW of Ridgemark, CA · 2092 days ago · 7 km deep · 60 km away
  7. 2.12km NNE of Pinnacles, CA · 2093 days ago · 3 km deep · 90 km away
  8. 1.63km ESE of Union City, CA · 2093 days ago · 6 km deep · 49 km away
  9. 1.716km E of Seven Trees, CA · 2093 days ago · 6 km deep · 5 km away
  10. 1.916km E of Seven Trees, CA · 2094 days ago · 7 km deep · 5 km away
  11. 2.512km NW of Pinnacles, CA · 2094 days ago · 5 km deep · 80 km away · felt by 1
  12. 2.116km NW of Pinnacles, CA · 2095 days ago · 6 km deep · 76 km away
  13. 1.816km NW of Pinnacles, CA · 2096 days ago · 9 km deep · 76 km away
  14. 2.34km ENE of Walnut Creek, CA · 2096 days ago · 10 km deep · 82 km away · felt by 28
  15. 3.08km NE of Alum Rock, CA · 2096 days ago · 10 km deep · 23 km away · felt by 442
  16. 1.610km NW of Pinnacles, CA · 2097 days ago · 6 km deep · 82 km away
  17. 1.92km SE of Pacheco, CA · 2097 days ago · 14 km deep · 88 km away · felt by 3
  18. 1.92km ENE of Pinnacles, CA · 2098 days ago · 3 km deep · 92 km away
  19. 2.63km WNW of Concord, CA · 2098 days ago · 16 km deep · 88 km away · felt by 84
  20. 1.511km NW of Pinnacles, CA · 2098 days ago · 7 km deep · 81 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc73511345. Read Sun, Oct 4, 2026, 8:33 PM UTC.