California earthquakes

M2.0 earthquake 2 km ENE of Alamo, California

A magnitude 2.0 earthquake struck 2 km ENE of Alamo, California on Mon, May 21, 1990, 6:54 PM PDT (01:54 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M4.1 6 km NE of East Foothills, California. This one was a foreshock.

Alamo 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
2.0 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1990-05-22 01:54:42 UTC
Depth
1.3 km (0.8 mi), shallow
Epicenter
37.860° N, 122.010° 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, 0.5 km in depth
Magnitude uncertainty
±0.23
Depth from
From location
Station coverage gap
52°
Stations used
20

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 100 in the 60 days after this one and 191 in the 30 days before it.

After

  1. 1.62 km SSW of Lexington Hills, California · 13284 days ago · 11 km deep · 79 km away
  2. 1.61 km NNW of Pleasanton, California · 13282 days ago · 10 km deep · 24 km away
  3. 2.37 km S of Sunol, California · 13281 days ago · 10 km deep · 39 km away
  4. 1.83 km ENE of Alamo, California · 13280 days ago · 4 km deep · 1 km away
  5. 1.74 km ESE of Alameda, California · 13280 days ago · 5 km deep · 21 km away
  6. 1.90 km W of Crockett, California · 13280 days ago · 10 km deep · 28 km away
  7. 1.64 km S of Lexington Hills, California · 13279 days ago · 13 km deep · 82 km away
  8. 2.21 km SSE of Danville, California · 13279 days ago · 9 km deep · 5 km away
  9. 1.62 km E of Alamo, California · 13278 days ago · 3 km deep · 1 km away
  10. 1.72 km NNE of Danville, California · 13278 days ago · 5 km deep · 2 km away
  11. 2.70 km W of Diablo, California · 13278 days ago · 15 km deep · 5 km away
  12. 2.213 km WNW of Davenport, California · 13278 days ago · 3 km deep · 92 km away
  13. 2.02 km E of Alamo, California · 13278 days ago · 4 km deep · 1 km away
  14. 2.14 km WNW of Lexington Hills, California · 13278 days ago · 11 km deep · 76 km away
  15. 2.44 km S of Lexington Hills, California · 13277 days ago · 14 km deep · 81 km away
  16. 1.82 km S of Lexington Hills, California · 13277 days ago · 13 km deep · 80 km away
  17. 1.612 km WSW of Byron, California · 13277 days ago · 12 km deep · 23 km away
  18. 2.22 km NNW of Seacliff, California · 13277 days ago · 5 km deep · 96 km away
  19. 2.89 km ESE of Livermore, California · 13276 days ago · 9 km deep · 39 km away
  20. 2.44 km NNW of Diablo, California · 13276 days ago · 3 km deep · 2 km away
  21. 2.310 km E of Blackhawk, California · 13275 days ago · 14 km deep · 19 km away
  22. 2.53 km NNW of Diablo, California · 13275 days ago · 0 km deep · 4 km away
  23. 1.83 km NNW of Diablo, California · 13275 days ago · 0 km deep · 4 km away
  24. 1.93 km NNW of Diablo, California · 13275 days ago · 0 km deep · 4 km away
  25. 1.62 km SW of Brentwood, California · 13273 days ago · 17 km deep · 26 km away
  26. 2.13 km ENE of Alamo, California · 13272 days ago · 6 km deep · 1 km away
  27. 2.33 km ENE of Alamo, California · 13272 days ago · 5 km deep · 1 km away
  28. 2.32 km ENE of Alamo, California · 13272 days ago · 5 km deep · 1 km away
  29. 1.917 km NE of East Foothills, California · 13272 days ago · 7 km deep · 49 km away
  30. 1.71 km ENE of Alamo, California · 13271 days ago · 6 km deep · 1 km away
  31. 1.61 km ENE of Alamo, California · 13271 days ago · 6 km deep · 1 km away
  32. 1.76 km ENE of Corralitos, California · 13270 days ago · 9 km deep · 97 km away
  33. 1.63 km ENE of Alamo, California · 13269 days ago · 5 km deep · 2 km away
  34. 2.53 km NNE of San Leandro, California · 13267 days ago · 7 km deep · 16 km away
  35. 1.83 km NW of Diablo, California · 13267 days ago · 1 km deep · 2 km away
  36. 1.91 km ENE of Alamo, California · 13266 days ago · 6 km deep · 1 km away
  37. 3.315 km E of Seven Trees, California · 13264 days ago · 6 km deep · 71 km away
  38. 1.63 km ENE of Corralitos, California · 13264 days ago · 14 km deep · 98 km away
  39. 3.55 km SW of Yountville, California · 13264 days ago · 10 km deep · 67 km away
  40. 1.512 km NNE of Morgan Hill, California · 13263 days ago · 4 km deep · 77 km away
  41. 2.04 km WNW of Day Valley, California · 13263 days ago · 17 km deep · 90 km away
  42. 1.97 km N of Day Valley, California · 13263 days ago · 5 km deep · 86 km away
  43. 1.710 km WSW of Morgan Hill, California · 13261 days ago · 2 km deep · 87 km away
  44. 1.93 km SW of Moskowite Corner, California · 13261 days ago · 8 km deep · 65 km away
  45. 1.63 km E of Saratoga, California · 13261 days ago · 7 km deep · 66 km away
  46. 1.91 km SW of Saratoga, California · 13260 days ago · 6 km deep · 67 km away
  47. 1.62 km ENE of Alamo, California · 13259 days ago · 7 km deep · 0 km away
  48. 1.913 km NNW of Moskowite Corner, California · 13257 days ago · 3 km deep · 80 km away
  49. 2.13 km SSW of Los Altos Hills, California · 13257 days ago · 7 km deep · 58 km away
  50. 1.88 km SE of Livermore, California · 13256 days ago · 6 km deep · 38 km away
  51. 1.71 km NNE of Lexington Hills, California · 13256 days ago · 5 km deep · 76 km away
  52. 2.33 km SSW of Saratoga, California · 13255 days ago · 10 km deep · 70 km away
  53. 1.89 km N of Boulder Creek, California · 13254 days ago · 12 km deep · 73 km away
  54. 1.69 km N of Boulder Creek, California · 13254 days ago · 12 km deep · 73 km away
  55. 1.7Northern California · 13254 days ago · 7 km deep · 96 km away
  56. 2.32 km N of Kensington, California · 13252 days ago · 9 km deep · 26 km away
  57. 1.55 km NW of Day Valley, California · 13252 days ago · 16 km deep · 89 km away
  58. 2.24 km SE of North Gate, California · 13252 days ago · 4 km deep · 4 km away
  59. 1.813 km NE of East Foothills, California · 13251 days ago · 8 km deep · 52 km away
  60. 1.911 km NE of Angwin, California · 13250 days ago · 6 km deep · 91 km away

The first 60 of 100.

Before

  1. 1.71 km W of Loyola, California · 13285 days ago · 3 km deep · 57 km away
  2. 2.33 km W of Antioch, California · 13285 days ago · 17 km deep · 21 km away
  3. 2.29 km NNW of Boulder Creek, California · 13286 days ago · 4 km deep · 75 km away
  4. 1.92 km ENE of Alamo, California · 13287 days ago · 6 km deep · 0 km away
  5. 2.02 km N of Lexington Hills, California · 13288 days ago · 5 km deep · 75 km away
  6. 1.60 km ENE of Alamo, California · 13288 days ago · 4 km deep · 2 km away
  7. 1.8Northern California · 13288 days ago · 6 km deep · 55 km away
  8. 3.67 km E of East Foothills, California · 13289 days ago · 8 km deep · 59 km away
  9. 1.81 km ENE of Alamo, California · 13289 days ago · 3 km deep · 0 km away
  10. 1.51 km NE of Danville, California · 13290 days ago · 6 km deep · 4 km away
  11. 1.715 km E of Seven Trees, California · 13290 days ago · 5 km deep · 70 km away
  12. 1.8Northern California · 13290 days ago · 2 km deep · 2 km away
  13. 2.70 km E of Alamo, California · 13290 days ago · 6 km deep · 2 km away
  14. 1.61 km NW of Pacifica, California · 13291 days ago · 6 km deep · 50 km away
  15. 2.93 km WNW of Pacifica, California · 13291 days ago · 7 km deep · 52 km away
  16. 1.716 km W of Bolinas, California · 13292 days ago · 9 km deep · 76 km away
  17. 2.13 km E of Alamo, California · 13293 days ago · 2 km deep · 2 km away
  18. 1.72 km ESE of Danville, California · 13293 days ago · 6 km deep · 6 km away
  19. 1.54 km ESE of Roseland, California · 13294 days ago · 7 km deep · 84 km away
  20. 1.54 km SSE of Lexington Hills, California · 13294 days ago · 11 km deep · 82 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc158113. Read Sun, Oct 4, 2026, 8:53 AM UTC.