California earthquakes

M1.7 earthquake 13 km WSW of Gustine, California

A magnitude 1.7 earthquake struck 13 km WSW of Gustine, California on Tue, Feb 26, 1991, 4:00 AM PST (12:00 UTC), 9 km (5 mi) below the surface.

A larger quake followed: M4.6 1 km NNE of Interlaken, California. 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
1.7 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1991-02-26 12:00:39 UTC
Depth
8.8 km (5.4 mi), shallow
Epicenter
37.225° N, 121.142° 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 3.1 km horizontally, 2.9 km in depth
Magnitude uncertainty
±0.27
Depth from
From location
Station coverage gap
255°, poorly surrounded by stations
Stations used
8

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 180 in the 60 days after this one and 74 in the 30 days before it.

After

  1. 1.65 km SW of Gilroy, California · 13004 days ago · 4 km deep · 50 km away
  2. 2.024 km NE of Greenfield, California · 13004 days ago · 7 km deep · 83 km away
  3. 2.48 km SSW of Tres Pinos, California · 13004 days ago · 3 km deep · 60 km away
  4. 1.78 km SSW of Tres Pinos, California · 13003 days ago · 3 km deep · 60 km away
  5. 1.68 km SSW of Tres Pinos, California · 13003 days ago · 3 km deep · 60 km away
  6. 1.932 km W of Three Rocks, California · 13001 days ago · 10 km deep · 89 km away
  7. 1.74 km SSE of San Juan Bautista, California · 13001 days ago · 4 km deep · 57 km away
  8. 2.012 km NE of East Foothills, California · 13001 days ago · 9 km deep · 59 km away
  9. 1.82 km NNE of Lexington Hills, California · 13001 days ago · 4 km deep · 73 km away
  10. 2.322 km NE of Soledad, California · 13000 days ago · 2 km deep · 76 km away
  11. 2.43 km E of Interlaken, California · 13000 days ago · 13 km deep · 58 km away
  12. 1.95 km ESE of Interlaken, California · 12998 days ago · 12 km deep · 57 km away
  13. 2.22 km SSW of Lexington Hills, California · 12998 days ago · 15 km deep · 75 km away
  14. 2.522 km NE of Soledad, California · 12998 days ago · 4 km deep · 71 km away
  15. 1.95 km ESE of Interlaken, California · 12998 days ago · 12 km deep · 57 km away
  16. 1.714 km E of Seven Trees, California · 12997 days ago · 6 km deep · 49 km away
  17. 1.63 km N of Aromas, California · 12997 days ago · 6 km deep · 56 km away
  18. 1.63 km NE of Fairview, California · 12997 days ago · 5 km deep · 94 km away
  19. 1.64 km NE of Fairview, California · 12997 days ago · 6 km deep · 94 km away
  20. 1.52 km W of Lexington Hills, California · 12996 days ago · 12 km deep · 76 km away
  21. 1.73 km NE of Fairview, California · 12996 days ago · 6 km deep · 94 km away
  22. 1.521 km SSE of Tres Pinos, California · 12995 days ago · 5 km deep · 68 km away
  23. 1.722 km NE of Soledad, California · 12995 days ago · 8 km deep · 75 km away
  24. 1.86 km NNW of Marina, California · 12995 days ago · 13 km deep · 81 km away
  25. 2.627 km E of Tres Pinos, California · 12994 days ago · 0 km deep · 53 km away
  26. 1.72 km S of San Juan Bautista, California · 12994 days ago · 6 km deep · 57 km away
  27. 2.223 km NE of Soledad, California · 12993 days ago · 10 km deep · 73 km away
  28. 1.623 km NE of Soledad, California · 12993 days ago · 9 km deep · 73 km away
  29. 1.64 km N of San Juan Bautista, California · 12992 days ago · 6 km deep · 52 km away
  30. 2.21 km NNE of Livermore, California · 12992 days ago · 16 km deep · 76 km away
  31. 4.03 km NNE of Livermore, California · 12992 days ago · 19 km deep · 76 km away
  32. 2.62 km NNE of Livermore, California · 12992 days ago · 16 km deep · 76 km away
  33. 2.22 km NNE of Livermore, California · 12992 days ago · 17 km deep · 76 km away
  34. 1.93 km NNE of Livermore, California · 12992 days ago · 17 km deep · 76 km away
  35. 2.12 km NNE of Livermore, California · 12992 days ago · 16 km deep · 76 km away
  36. 2.72 km ESE of Aromas, California · 12992 days ago · 7 km deep · 57 km away
  37. 1.63 km NNE of Livermore, California · 12992 days ago · 17 km deep · 76 km away
  38. 3.022 km ENE of Soledad, California · 12991 days ago · 5 km deep · 77 km away
  39. 1.922 km ENE of Soledad, California · 12991 days ago · 5 km deep · 77 km away
  40. 1.75 km E of Interlaken, California · 12991 days ago · 7 km deep · 56 km away
  41. 2.223 km ENE of Soledad, California · 12990 days ago · 4 km deep · 76 km away
  42. 1.725 km NE of Greenfield, California · 12989 days ago · 8 km deep · 86 km away
  43. 1.82 km NE of Livermore, California · 12989 days ago · 17 km deep · 75 km away
  44. 2.114 km WNW of La Vina, California · 12989 days ago · 11 km deep · 85 km away
  45. 2.27 km WSW of Monte Sereno, California · 12988 days ago · 13 km deep · 82 km away
  46. 2.021 km NE of Soledad, California · 12988 days ago · 3 km deep · 73 km away
  47. 1.522 km NNE of Soledad, California · 12988 days ago · 2 km deep · 70 km away
  48. 2.321 km NE of Soledad, California · 12986 days ago · 2 km deep · 75 km away
  49. 2.311 km ESE of Livermore, California · 12986 days ago · 8 km deep · 64 km away
  50. 1.711 km ESE of Livermore, California · 12986 days ago · 7 km deep · 64 km away
  51. 1.81 km WSW of Tres Pinos, California · 12986 days ago · 4 km deep · 52 km away
  52. 2.65 km WNW of Day Valley, California · 12985 days ago · 16 km deep · 71 km away
  53. 2.12 km E of Corralitos, California · 12985 days ago · 15 km deep · 62 km away
  54. 2.120 km W of Three Rocks, California · 12985 days ago · 8 km deep · 92 km away
  55. 1.61 km W of Tres Pinos, California · 12985 days ago · 5 km deep · 52 km away
  56. 1.720 km W of Three Rocks, California · 12985 days ago · 9 km deep · 93 km away
  57. 2.35 km SE of Tres Pinos, California · 12984 days ago · 8 km deep · 53 km away
  58. 3.22 km NNE of Livermore, California · 12982 days ago · 18 km deep · 76 km away
  59. 2.45 km WSW of Cupertino, California · 12982 days ago · 4 km deep · 84 km away
  60. 2.17 km NNE of Day Valley, California · 12982 days ago · 9 km deep · 62 km away

The first 60 of 180.

Before

  1. 1.71 km SW of San Ramon, California · 13005 days ago · 8 km deep · 96 km away
  2. 2.114 km E of Seven Trees, California · 13005 days ago · 2 km deep · 48 km away
  3. 1.68 km SE of Coulterville, California · 13005 days ago · 4 km deep · 100 km away
  4. 1.73 km NE of Soquel, California · 13005 days ago · 3 km deep · 73 km away
  5. 2.22 km E of Corralitos, California · 13005 days ago · 15 km deep · 62 km away
  6. 1.95 km SSW of Davenport, California · 13006 days ago · 5 km deep · 100 km away
  7. 2.32 km WNW of San Juan Bautista, California · 13006 days ago · 6 km deep · 56 km away
  8. 1.524 km NE of King City, California · 13006 days ago · 6 km deep · 98 km away
  9. 1.518 km NE of East Foothills, California · 13006 days ago · 7 km deep · 57 km away
  10. 1.68 km SSE of Coulterville, California · 13006 days ago · 4 km deep · 100 km away
  11. 2.18 km SSW of Tres Pinos, California · 13006 days ago · 3 km deep · 60 km away
  12. 1.624 km NE of King City, California · 13007 days ago · 7 km deep · 98 km away
  13. 1.824 km NE of King City, California · 13007 days ago · 8 km deep · 97 km away
  14. 1.724 km NE of King City, California · 13007 days ago · 7 km deep · 98 km away
  15. 3.015 km SSE of Tres Pinos, California · 13007 days ago · 3 km deep · 64 km away
  16. 2.124 km NE of Soledad, California · 13008 days ago · 10 km deep · 73 km away
  17. 2.414 km E of Seven Trees, California · 13008 days ago · 3 km deep · 47 km away
  18. 1.813 km NE of East Foothills, California · 13008 days ago · 5 km deep · 59 km away
  19. 1.63 km NNW of Interlaken, California · 13009 days ago · 15 km deep · 60 km away
  20. 1.82 km SW of Blackhawk, California · 13009 days ago · 15 km deep · 95 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc207279. Read Sun, Oct 4, 2026, 7:08 PM UTC.