California earthquakes

M1.7 earthquake 2 km WSW of Oakley, California

A magnitude 1.7 earthquake struck 2 km WSW of Oakley, California on Sun, Feb 21, 1982, 10:21 PM PST (06:21 UTC), 9 km (5 mi) below the surface.

A larger quake followed: M1.8 Northern California. This one was a foreshock.

Oakley 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
1.7 (md), micro
Local time
UTC
1982-02-22 06:21:37 UTC
Depth
8.6 km (5.3 mi), shallow
Epicenter
37.989° N, 121.738° 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 1.1 km horizontally, 0.8 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
186°, poorly surrounded by stations
Stations used
13

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 47 in the 30 days before it.

After

  1. 1.65 km WSW of Glen Ellen, California · 16284 days ago · 7 km deep · 84 km away
  2. 1.8Northern California · 16283 days ago · 5 km deep · 99 km away
  3. 2.07 km ESE of East Foothills, California · 16283 days ago · 5 km deep · 69 km away
  4. 1.515 km N of Morgan Hill, California · 16282 days ago · 5 km deep · 80 km away
  5. 2.315 km E of Seven Trees, California · 16280 days ago · 5 km deep · 78 km away
  6. 1.82 km NW of Muir Beach, California · 16280 days ago · 3 km deep · 76 km away
  7. 1.89 km NNE of Morgan Hill, California · 16279 days ago · 4 km deep · 88 km away
  8. 1.99 km S of Muir Beach, California · 16276 days ago · 2 km deep · 77 km away
  9. 1.98 km ENE of Morgan Hill, California · 16275 days ago · 2 km deep · 94 km away
  10. 2.24 km SSE of Rocklin, California · 16275 days ago · 12 km deep · 96 km away
  11. 2.93 km W of Granite Bay, California · 16275 days ago · 10 km deep · 98 km away
  12. 2.10 km W of Concord, California · 16273 days ago · 15 km deep · 27 km away
  13. 1.77 km SSE of Livermore, California · 16271 days ago · 17 km deep · 41 km away
  14. 1.64 km NNE of Fremont, California · 16271 days ago · 8 km deep · 49 km away
  15. 1.75 km SSE of Rocklin, California · 16270 days ago · 11 km deep · 95 km away
  16. 2.12 km SSW of Sunol, California · 16269 days ago · 11 km deep · 48 km away
  17. 1.82 km WNW of Fremont, California · 16267 days ago · 7 km deep · 54 km away
  18. 2.23 km WSW of Cupertino, California · 16267 days ago · 4 km deep · 81 km away
  19. 2.41 km E of Piedmont, California · 16265 days ago · 13 km deep · 45 km away
  20. 2.98 km ENE of San Martin, California · 16265 days ago · 8 km deep · 99 km away
  21. 2.08 km ESE of East Foothills, California · 16263 days ago · 8 km deep · 70 km away
  22. 2.58 km ESE of East Foothills, California · 16263 days ago · 8 km deep · 70 km away
  23. 2.2Northern California · 16263 days ago · 9 km deep · 76 km away
  24. 1.57 km NE of Milpitas, California · 16263 days ago · 39 km deep · 58 km away
  25. 1.58 km NE of San Martin, California · 16262 days ago · 7 km deep · 97 km away
  26. 2.36 km ENE of Santa Rosa, California · 16262 days ago · 6 km deep · 96 km away
  27. 1.98 km ENE of Milpitas, California · 16260 days ago · 6 km deep · 58 km away
  28. 2.114 km E of Seven Trees, California · 16260 days ago · 2 km deep · 78 km away
  29. 2.68 km ENE of Morgan Hill, California · 16260 days ago · 3 km deep · 94 km away
  30. 1.611 km N of Morgan Hill, California · 16257 days ago · 7 km deep · 84 km away
  31. 1.911 km SSE of Elmira, California · 16256 days ago · 16 km deep · 31 km away
  32. 2.020 km NNE of Morgan Hill, California · 16256 days ago · 7 km deep · 77 km away
  33. 1.70 km ENE of San Ramon, California · 16255 days ago · 1 km deep · 31 km away
  34. 1.52 km E of San Ramon, California · 16255 days ago · 8 km deep · 30 km away
  35. 2.02 km E of San Ramon, California · 16255 days ago · 6 km deep · 30 km away
  36. 1.92 km E of San Ramon, California · 16255 days ago · 6 km deep · 30 km away
  37. 1.61 km E of San Ramon, California · 16255 days ago · 7 km deep · 30 km away
  38. 1.63 km SSE of Portola Valley, California · 16255 days ago · 10 km deep · 82 km away
  39. 1.61 km E of San Ramon, California · 16255 days ago · 7 km deep · 30 km away
  40. 2.61 km E of San Ramon, California · 16254 days ago · 7 km deep · 30 km away
  41. 2.117 km NE of East Foothills, California · 16254 days ago · 7 km deep · 54 km away
  42. 1.61 km E of San Ramon, California · 16254 days ago · 7 km deep · 30 km away
  43. 2.11 km E of San Ramon, California · 16254 days ago · 5 km deep · 30 km away
  44. 2.11 km E of San Ramon, California · 16254 days ago · 7 km deep · 30 km away
  45. 1.92 km E of San Ramon, California · 16254 days ago · 8 km deep · 30 km away
  46. 3.06 km NE of Santa Rosa, California · 16254 days ago · 8 km deep · 97 km away
  47. 1.85 km SE of Santa Rosa, California · 16253 days ago · 9 km deep · 94 km away
  48. 1.62 km E of San Ramon, California · 16252 days ago · 7 km deep · 30 km away
  49. 3.03 km ESE of Piedmont, California · 16251 days ago · 5 km deep · 44 km away
  50. 1.94 km E of Piedmont, California · 16251 days ago · 4 km deep · 43 km away
  51. 2.75 km N of Morgan Hill, California · 16251 days ago · 6 km deep · 91 km away
  52. 2.73 km ESE of Piedmont, California · 16251 days ago · 4 km deep · 45 km away
  53. 2.73 km ESE of Piedmont, California · 16251 days ago · 5 km deep · 45 km away
  54. 1.92 km ESE of Piedmont, California · 16251 days ago · 3 km deep · 45 km away
  55. 1.73 km ESE of Piedmont, California · 16251 days ago · 4 km deep · 45 km away
  56. 1.53 km ESE of Piedmont, California · 16251 days ago · 4 km deep · 45 km away
  57. 1.92 km ESE of Piedmont, California · 16251 days ago · 6 km deep · 45 km away
  58. 2.22 km E of San Ramon, California · 16250 days ago · 7 km deep · 30 km away
  59. 3.13 km ESE of Piedmont, California · 16249 days ago · 4 km deep · 45 km away
  60. 2.33 km ESE of Piedmont, California · 16249 days ago · 4 km deep · 44 km away

The first 60 of 102.

Before

  1. 2.01 km SE of Diablo, California · 16284 days ago · 8 km deep · 26 km away
  2. 1.6Northern California · 16284 days ago · 11 km deep · 9 km away
  3. 1.65 km SSW of Antioch, California · 16284 days ago · 11 km deep · 8 km away
  4. 1.95 km S of Calistoga, California · 16287 days ago · 2 km deep · 96 km away
  5. 1.65 km SE of Santa Rosa, California · 16288 days ago · 8 km deep · 93 km away
  6. 1.58 km NNE of Milpitas, California · 16288 days ago · 3 km deep · 56 km away
  7. 2.14 km SE of Pittsburg, California · 16288 days ago · 18 km deep · 10 km away
  8. 2.27 km E of East Foothills, California · 16291 days ago · 6 km deep · 68 km away
  9. 2.27 km E of East Foothills, California · 16291 days ago · 6 km deep · 69 km away
  10. 2.411 km SW of Brentwood, California · 16291 days ago · 18 km deep · 16 km away
  11. 1.612 km ESE of Livermore, California · 16292 days ago · 8 km deep · 41 km away
  12. 1.68 km N of Pittsburg, California · 16293 days ago · 19 km deep · 17 km away
  13. 1.914 km E of Seven Trees, California · 16294 days ago · 1 km deep · 77 km away
  14. 2.84 km SSE of Rocklin, California · 16294 days ago · 10 km deep · 97 km away
  15. 2.01 km NNE of Clayton, California · 16294 days ago · 3 km deep · 17 km away
  16. 2.48 km ENE of Patterson, California · 16295 days ago · 12 km deep · 82 km away
  17. 1.918 km E of East Foothills, California · 16296 days ago · 4 km deep · 71 km away
  18. 1.80 km SE of Concord, California · 16296 days ago · 9 km deep · 25 km away
  19. 2.15 km ENE of Citrus Heights, California · 16296 days ago · 16 km deep · 94 km away
  20. 1.98 km ENE of Morgan Hill, California · 16297 days ago · 4 km deep · 94 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1072359. Read Tue, Sep 22, 2026, 9:39 PM UTC.