California earthquakes

M1.6 earthquake 20 km SW of Gustine, CA

A magnitude 1.6 earthquake struck 20 km SW of Gustine, CA on Sun, Mar 15, 2026, 10:18 PM PDT (05:18 UTC), 12 km (7 mi) below the surface.

A larger quake followed: M4.6 1 km SE of Boulder Creek, CA. This one was a foreshock.

Gustine 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
1.6 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
2026-03-16 05:18:09 UTC
Depth
11.9 km (7.4 mi), shallow
Epicenter
37.127° N, 121.152° 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 0.4 km horizontally, 0.6 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
117°
Stations used
36

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 99 in the 60 days after this one and 60 in the 30 days before it.

After

  1. 2.017 km SSW of South Dos Palos, CA · 200 days ago · 0 km deep · 48 km away
  2. 1.64 km SE of San Ramon, CA · 200 days ago · 8 km deep · 99 km away
  3. 2.316 km NW of Pacific Grove, CA · 200 days ago · 12 km deep · 94 km away · felt by 1
  4. 3.38 km ENE of Gilroy, CA · 200 days ago · 8 km deep · 31 km away · felt by 61
  5. 2.28 km ENE of Gilroy, CA · 199 days ago · 9 km deep · 31 km away
  6. 1.715 km NNE of Morgan Hill, CA · 199 days ago · 4 km deep · 44 km away
  7. 2.54 km SW of San Juan Bautista, CA · 198 days ago · 8 km deep · 50 km away · felt by 2
  8. 1.612 km NNW of Hollister, CA · 198 days ago · 6 km deep · 32 km away
  9. 1.915 km S of Tres Pinos, CA · 198 days ago · 5 km deep · 54 km away
  10. 1.83 km E of Aromas, CA · 197 days ago · 2 km deep · 49 km away
  11. 2.113 km S of Tres Pinos, CA · 197 days ago · 3 km deep · 52 km away
  12. 1.611 km NW of Pinnacles, CA · 196 days ago · 4 km deep · 59 km away
  13. 1.58 km ENE of Gilroy, CA · 196 days ago · 8 km deep · 31 km away
  14. 1.911 km NW of Pinnacles, CA · 196 days ago · 9 km deep · 58 km away
  15. 1.73 km ESE of San Ramon, CA · 193 days ago · 7 km deep · 100 km away
  16. 2.111 km SE of Pinnacles, CA · 193 days ago · 4 km deep · 75 km away
  17. 1.611 km SE of Pinnacles, CA · 193 days ago · 4 km deep · 74 km away
  18. 2.83 km ESE of San Ramon, CA · 193 days ago · 9 km deep · 100 km away · felt by 156
  19. 1.630 km SW of South Dos Palos, CA · 193 days ago · 1 km deep · 49 km away
  20. 1.64 km SE of San Ramon, CA · 192 days ago · 8 km deep · 99 km away
  21. 2.515 km N of Morgan Hill, CA · 191 days ago · 5 km deep · 46 km away · felt by 2
  22. 1.89 km NW of Pinnacles, CA · 189 days ago · 1 km deep · 59 km away
  23. 1.77 km WNW of Pinnacles, CA · 188 days ago · 6 km deep · 62 km away
  24. 2.54 km SE of San Ramon, CA · 187 days ago · 9 km deep · 99 km away · felt by 14
  25. 1.91 km WSW of Pinnacles, CA · 187 days ago · 7 km deep · 67 km away
  26. 2.08 km SSW of Brentwood, CA · 187 days ago · 18 km deep · 99 km away
  27. 1.86 km SE of Pinnacles, CA · 187 days ago · 6 km deep · 71 km away · felt by 1
  28. 1.75 km SE of San Ramon, CA · 187 days ago · 9 km deep · 98 km away
  29. 1.75 km SE of San Ramon, CA · 187 days ago · 9 km deep · 98 km away
  30. 1.815 km NW of Pinnacles, CA · 186 days ago · 6 km deep · 57 km away
  31. 1.75 km SE of San Ramon, CA · 186 days ago · 8 km deep · 98 km away
  32. 1.810 km ENE of Tres Pinos, CA · 184 days ago · 8 km deep · 35 km away
  33. 1.65 km ENE of Pinnacles, CA · 184 days ago · 7 km deep · 64 km away · felt by 1
  34. 1.88 km NNE of Pinnacles, CA · 184 days ago · 10 km deep · 60 km away
  35. 1.99 km N of Boulder Creek, CA · 184 days ago · 11 km deep · 86 km away · felt by 36
  36. 4.61 km SE of Boulder Creek, CA · 184 days ago · 10 km deep · 85 km away · felt by 33,078
  37. 1.79 km N of Livermore, CA · 184 days ago · 13 km deep · 90 km away
  38. 1.610 km E of Alum Rock, CA · 184 days ago · 5 km deep · 56 km away
  39. 1.60 km SW of Boulder Creek, CA · 183 days ago · 9 km deep · 86 km away
  40. 2.224 km SE of Pinnacles, CA · 183 days ago · 7 km deep · 84 km away · felt by 5
  41. 1.68 km ENE of Gilroy, CA · 183 days ago · 8 km deep · 32 km away
  42. 2.66 km SW of Gilroy, CA · 183 days ago · 5 km deep · 45 km away · felt by 47
  43. 1.812 km SE of Pinnacles, CA · 182 days ago · 7 km deep · 76 km away
  44. 1.63 km ESE of Boulder Creek, CA · 182 days ago · 7 km deep · 84 km away
  45. 1.69 km ENE of Milpitas, CA · 182 days ago · 6 km deep · 69 km away
  46. 1.516 km NW of Pinnacles, CA · 182 days ago · 8 km deep · 57 km away
  47. 1.71 km ESE of Boulder Creek, CA · 182 days ago · 10 km deep · 85 km away
  48. 1.57 km NW of Pinnacles, CA · 182 days ago · 2 km deep · 62 km away
  49. 1.610 km NNE of Pinnacles, CA · 180 days ago · 12 km deep · 56 km away
  50. 2.711 km SW of Ridgemark, CA · 180 days ago · 8 km deep · 51 km away · felt by 4
  51. 1.86 km SW of Gilroy, CA · 180 days ago · 5 km deep · 45 km away
  52. 1.97 km NW of Livermore, CA · 179 days ago · 15 km deep · 89 km away · felt by 1
  53. 1.87 km NNE of Pleasanton, CA · 178 days ago · 14 km deep · 89 km away
  54. 1.915 km N of New Idria, CA · 176 days ago · 6 km deep · 77 km away
  55. 1.77 km SE of Sunol, CA · 174 days ago · 9 km deep · 77 km away
  56. 1.63 km W of San Juan Bautista, CA · 173 days ago · 5 km deep · 49 km away
  57. 1.815 km E of Seven Trees, CA · 173 days ago · 3 km deep · 50 km away
  58. 1.912 km NW of Pinnacles, CA · 173 days ago · 6 km deep · 59 km away
  59. 1.510 km SSW of Ridgemark, CA · 172 days ago · 7 km deep · 50 km away
  60. 1.88 km WNW of New Idria, CA · 171 days ago · 13 km deep · 83 km away

The first 60 of 99.

Before

  1. 2.520 km SW of Gustine, CA · 201 days ago · 12 km deep · 0 km away · felt by 1
  2. 1.64 km ESE of San Ramon, CA · 201 days ago · 7 km deep · 100 km away
  3. 1.612 km SE of Pinnacles, CA · 202 days ago · 0 km deep · 76 km away
  4. 1.67 km WSW of Gilroy, CA · 202 days ago · 9 km deep · 46 km away
  5. 1.74 km SE of San Ramon, CA · 203 days ago · 8 km deep · 99 km away
  6. 1.714 km S of Tres Pinos, CA · 203 days ago · 5 km deep · 54 km away
  7. 2.84 km SE of San Ramon, CA · 204 days ago · 9 km deep · 99 km away · felt by 94
  8. 2.58 km ENE of Gilroy, CA · 204 days ago · 9 km deep · 31 km away · felt by 9
  9. 1.64 km SE of San Ramon, CA · 207 days ago · 9 km deep · 99 km away
  10. 1.64 km WNW of Pinnacles, CA · 208 days ago · 5 km deep · 65 km away
  11. 2.519 km SW of Gustine, CA · 208 days ago · 1 km deep · 4 km away
  12. 1.74 km ESE of San Ramon, CA · 208 days ago · 5 km deep · 99 km away · felt by 2
  13. 2.65 km SE of San Ramon, CA · 208 days ago · 8 km deep · 98 km away · felt by 25
  14. 1.521 km SW of Gustine, CA · 208 days ago · 10 km deep · 1 km away
  15. 1.721 km SW of Gustine, CA · 208 days ago · 11 km deep · 1 km away
  16. 1.620 km NE of Morgan Hill, CA · 209 days ago · 6 km deep · 33 km away
  17. 1.91 km E of Pinnacles, CA · 209 days ago · 6 km deep · 66 km away
  18. 2.51 km SW of Aptos Hills-Larkin Valley, CA · 210 days ago · 5 km deep · 64 km away · felt by 122
  19. 1.64 km ESE of San Ramon, CA · 210 days ago · 7 km deep · 99 km away
  20. 2.822 km SW of South Dos Palos, CA · 210 days ago · 8 km deep · 48 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc75328077. Read Sat, Oct 3, 2026, 2:34 AM UTC.