California earthquakes

M1.5 earthquake 6 km S of Cobb, California

A magnitude 1.5 earthquake struck 6 km S of Cobb, California on Sun, May 20, 1990, 7:34 PM PDT (02:34 UTC), 1 km (0 mi) below the surface.

A larger quake followed: M3.6 4 km W of Cobb, California. This one was a foreshock.

Cobb 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
1.5 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1990-05-21 02:34:50 UTC
Depth
0.6 km (0.4 mi), shallow
Epicenter
38.761° N, 122.730° 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 0.3 km horizontally, 0.6 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
76°
Stations used
10

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 174 in the 60 days after this one and 86 in the 30 days before it.

After

  1. 1.64 km S of Cobb, California · 13285 days ago · 2 km deep · 2 km away
  2. 1.65 km SW of Cobb, California · 13285 days ago · 1 km deep · 5 km away
  3. 1.55 km SSW of Cobb, California · 13285 days ago · 2 km deep · 2 km away
  4. 2.25 km SW of Cobb, California · 13285 days ago · 2 km deep · 5 km away
  5. 2.24 km W of Cobb, California · 13284 days ago · 2 km deep · 8 km away
  6. 1.69 km W of Cobb, California · 13283 days ago · 1 km deep · 11 km away
  7. 3.58 km W of Cobb, California · 13283 days ago · -1 km deep · 11 km away
  8. 3.19 km W of Cobb, California · 13283 days ago · -1 km deep · 10 km away
  9. 2.48 km W of Cobb, California · 13283 days ago · -1 km deep · 11 km away
  10. 2.19 km W of Cobb, California · 13283 days ago · 0 km deep · 10 km away
  11. 1.69 km W of Cobb, California · 13283 days ago · 0 km deep · 10 km away
  12. 2.74 km S of Cobb, California · 13282 days ago · 1 km deep · 2 km away
  13. 1.95 km W of Cobb, California · 13282 days ago · 0 km deep · 9 km away
  14. 2.06 km SW of Cobb, California · 13282 days ago · 2 km deep · 5 km away
  15. 1.87 km WSW of Cobb, California · 13280 days ago · 1 km deep · 8 km away
  16. 1.90 km W of Crockett, California · 13280 days ago · 10 km deep · 90 km away
  17. 1.612 km ENE of Cloverdale, California · 13279 days ago · 0 km deep · 15 km away
  18. 1.65 km W of Cobb, California · 13279 days ago · 0 km deep · 8 km away
  19. 2.17 km WSW of Cobb, California · 13279 days ago · 3 km deep · 8 km away
  20. 2.85 km WSW of Cobb, California · 13279 days ago · 0 km deep · 7 km away
  21. 1.6Northern California · 13278 days ago · -1 km deep · 6 km away
  22. 1.86 km W of Cobb, California · 13278 days ago · 4 km deep · 9 km away
  23. 1.812 km ENE of Cloverdale, California · 13278 days ago · 1 km deep · 15 km away
  24. 1.84 km W of Cobb, California · 13277 days ago · 1 km deep · 8 km away
  25. 2.76 km W of Cobb, California · 13277 days ago · 0 km deep · 9 km away
  26. 1.87 km E of Hopland, California · 13276 days ago · 5 km deep · 35 km away
  27. 1.93 km SW of Bodega Bay, California · 13275 days ago · 10 km deep · 58 km away
  28. 1.94 km SW of Cobb, California · 13275 days ago · 3 km deep · 4 km away
  29. 2.212 km W of Cobb, California · 13275 days ago · 1 km deep · 15 km away
  30. 1.712 km W of Cobb, California · 13275 days ago · 1 km deep · 15 km away
  31. 2.77 km W of Cobb, California · 13275 days ago · 2 km deep · 10 km away
  32. 1.713 km ENE of Cloverdale, California · 13275 days ago · 0 km deep · 15 km away
  33. 2.05 km W of Cobb, California · 13275 days ago · 2 km deep · 8 km away
  34. 2.15 km SW of Cobb, California · 13274 days ago · 2 km deep · 5 km away
  35. 1.65 km W of Cobb, California · 13274 days ago · 0 km deep · 8 km away
  36. 2.31 km SSE of Clear Lake Riviera, California · 13272 days ago · -1 km deep · 20 km away
  37. 2.09 km W of Cobb, California · 13272 days ago · 2 km deep · 12 km away
  38. 2.86 km W of Cobb, California · 13272 days ago · 2 km deep · 8 km away
  39. 1.65 km SSW of Cobb, California · 13272 days ago · -1 km deep · 3 km away
  40. 1.610 km ENE of Hidden Valley Lake, California · 13272 days ago · 4 km deep · 26 km away
  41. 1.92 km SSE of North Lakeport, California · 13270 days ago · 15 km deep · 37 km away
  42. 3.17 km WSW of Cobb, California · 13270 days ago · 2 km deep · 8 km away
  43. 1.65 km WSW of Cobb, California · 13270 days ago · 1 km deep · 7 km away
  44. 2.45 km W of Cobb, California · 13270 days ago · 1 km deep · 7 km away
  45. 1.5Northern California · 13269 days ago · 4 km deep · 12 km away
  46. 2.09 km W of Cobb, California · 13269 days ago · 1 km deep · 11 km away
  47. 2.59 km W of Cobb, California · 13269 days ago · -1 km deep · 10 km away
  48. 2.29 km W of Cobb, California · 13268 days ago · 1 km deep · 11 km away
  49. 1.97 km WSW of Cobb, California · 13267 days ago · 0 km deep · 8 km away
  50. 1.74 km W of Cobb, California · 13267 days ago · 0 km deep · 9 km away
  51. 2.04 km W of Cobb, California · 13267 days ago · 1 km deep · 8 km away
  52. 3.64 km W of Cobb, California · 13267 days ago · 2 km deep · 8 km away
  53. 2.05 km SW of Cobb, California · 13267 days ago · 1 km deep · 6 km away
  54. 1.84 km WNW of Cobb, California · 13267 days ago · 2 km deep · 9 km away
  55. 1.85 km W of Cobb, California · 13267 days ago · 1 km deep · 8 km away
  56. 1.65 km W of Cobb, California · 13267 days ago · 0 km deep · 8 km away
  57. 1.65 km WSW of Cobb, California · 13266 days ago · 1 km deep · 7 km away
  58. 1.97 km WSW of Cobb, California · 13266 days ago · 2 km deep · 8 km away
  59. 2.86 km W of Cobb, California · 13265 days ago · 3 km deep · 9 km away
  60. 3.55 km SW of Yountville, California · 13264 days ago · 10 km deep · 52 km away

The first 60 of 174.

Before

  1. 2.18 km WSW of Cobb, California · 13286 days ago · 4 km deep · 8 km away
  2. 1.85 km W of Cobb, California · 13286 days ago · 2 km deep · 8 km away
  3. 1.75 km WNW of Cobb, California · 13287 days ago · 1 km deep · 10 km away
  4. 2.05 km WNW of Cobb, California · 13287 days ago · 1 km deep · 10 km away
  5. 2.24 km WSW of Cobb, California · 13287 days ago · 2 km deep · 7 km away
  6. 1.79 km W of Cobb, California · 13287 days ago · 0 km deep · 11 km away
  7. 1.66 km W of Cobb, California · 13288 days ago · 3 km deep · 9 km away
  8. 2.17 km NE of Upper Lake, California · 13288 days ago · 8 km deep · 51 km away
  9. 2.09 km W of Cobb, California · 13289 days ago · 1 km deep · 11 km away
  10. 1.84 km SSW of Cobb, California · 13290 days ago · 1 km deep · 4 km away
  11. 1.54 km SSW of Cobb, California · 13290 days ago · 0 km deep · 4 km away
  12. 1.86 km W of Cobb, California · 13290 days ago · 3 km deep · 8 km away
  13. 1.87 km W of Cobb, California · 13290 days ago · 0 km deep · 10 km away
  14. 2.27 km W of Cobb, California · 13291 days ago · 0 km deep · 10 km away
  15. 3.18 km W of Cobb, California · 13291 days ago · 0 km deep · 11 km away
  16. 2.27 km W of Cobb, California · 13291 days ago · 0 km deep · 10 km away
  17. 1.67 km WSW of Cobb, California · 13291 days ago · 1 km deep · 8 km away
  18. 2.35 km SW of Cobb, California · 13292 days ago · 3 km deep · 5 km away
  19. 2.49 km W of Cobb, California · 13292 days ago · 1 km deep · 11 km away
  20. 2.29 km W of Cobb, California · 13292 days ago · 0 km deep · 11 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1176901. Read Sun, Oct 4, 2026, 3:20 PM UTC.