California earthquakes

M1.6 earthquake 1 km NW of Pacifica, California

A magnitude 1.6 earthquake struck 1 km NW of Pacifica, California on Tue, May 15, 1990, 12:54 AM PDT (07:54 UTC), 6 km (3 mi) below the surface.

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

Pacifica 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
1990-05-15 07:54:36 UTC
Depth
5.5 km (3.4 mi), shallow
Epicenter
37.624° N, 122.499° 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 1.4 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.02
Depth from
From location
Station coverage gap
249°, poorly surrounded by stations
Stations used
11

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 195 in the 30 days before it.

After

  1. 2.70 km E of Alamo, California · 13290 days ago · 6 km deep · 49 km away
  2. 1.8Northern California · 13290 days ago · 2 km deep · 52 km away
  3. 1.715 km E of Seven Trees, California · 13290 days ago · 5 km deep · 82 km away
  4. 1.51 km NE of Danville, California · 13289 days ago · 6 km deep · 51 km away
  5. 1.81 km ENE of Alamo, California · 13289 days ago · 3 km deep · 50 km away
  6. 3.67 km E of East Foothills, California · 13288 days ago · 8 km deep · 73 km away
  7. 1.8Northern California · 13288 days ago · 6 km deep · 42 km away
  8. 1.60 km ENE of Alamo, California · 13287 days ago · 4 km deep · 49 km away
  9. 2.02 km N of Lexington Hills, California · 13287 days ago · 5 km deep · 68 km away
  10. 1.92 km ENE of Alamo, California · 13286 days ago · 6 km deep · 50 km away
  11. 2.29 km NNW of Boulder Creek, California · 13285 days ago · 4 km deep · 55 km away
  12. 2.33 km W of Antioch, California · 13285 days ago · 17 km deep · 71 km away
  13. 1.71 km W of Loyola, California · 13284 days ago · 3 km deep · 45 km away
  14. 2.02 km ENE of Alamo, California · 13284 days ago · 1 km deep · 50 km away
  15. 1.62 km SSW of Lexington Hills, California · 13283 days ago · 11 km deep · 70 km away
  16. 1.61 km NNW of Pleasanton, California · 13282 days ago · 10 km deep · 54 km away
  17. 2.37 km S of Sunol, California · 13280 days ago · 10 km deep · 55 km away
  18. 1.85 km SSW of Davenport, California · 13280 days ago · 3 km deep · 77 km away
  19. 1.83 km ENE of Alamo, California · 13279 days ago · 4 km deep · 51 km away
  20. 1.74 km ESE of Alameda, California · 13279 days ago · 5 km deep · 30 km away
  21. 1.90 km W of Crockett, California · 13279 days ago · 10 km deep · 53 km away
  22. 1.64 km S of Lexington Hills, California · 13278 days ago · 13 km deep · 72 km away
  23. 2.21 km SSE of Danville, California · 13278 days ago · 9 km deep · 49 km away
  24. 1.62 km E of Alamo, California · 13278 days ago · 3 km deep · 50 km away
  25. 1.72 km NNE of Danville, California · 13278 days ago · 5 km deep · 51 km away
  26. 2.70 km W of Diablo, California · 13278 days ago · 15 km deep · 52 km away
  27. 2.213 km WNW of Davenport, California · 13277 days ago · 3 km deep · 64 km away
  28. 2.02 km E of Alamo, California · 13277 days ago · 4 km deep · 50 km away
  29. 1.62 km N of Interlaken, California · 13277 days ago · 12 km deep · 99 km away
  30. 2.14 km WNW of Lexington Hills, California · 13277 days ago · 11 km deep · 65 km away
  31. 2.44 km S of Lexington Hills, California · 13277 days ago · 14 km deep · 72 km away
  32. 1.82 km S of Lexington Hills, California · 13276 days ago · 13 km deep · 71 km away
  33. 1.612 km WSW of Byron, California · 13276 days ago · 12 km deep · 68 km away
  34. 2.22 km NNW of Seacliff, California · 13276 days ago · 5 km deep · 86 km away
  35. 2.89 km ESE of Livermore, California · 13276 days ago · 9 km deep · 73 km away
  36. 2.44 km NNW of Diablo, California · 13275 days ago · 3 km deep · 53 km away
  37. 2.310 km E of Blackhawk, California · 13275 days ago · 14 km deep · 66 km away
  38. 1.93 km SW of Bodega Bay, California · 13274 days ago · 10 km deep · 92 km away
  39. 2.53 km NNW of Diablo, California · 13274 days ago · 0 km deep · 54 km away
  40. 1.83 km NNW of Diablo, California · 13274 days ago · 0 km deep · 54 km away
  41. 1.93 km NNW of Diablo, California · 13274 days ago · 0 km deep · 54 km away
  42. 1.62 km SW of Brentwood, California · 13272 days ago · 17 km deep · 76 km away
  43. 2.13 km ENE of Alamo, California · 13272 days ago · 6 km deep · 51 km away
  44. 2.33 km ENE of Alamo, California · 13271 days ago · 5 km deep · 51 km away
  45. 2.32 km ENE of Alamo, California · 13271 days ago · 5 km deep · 51 km away
  46. 1.917 km NE of East Foothills, California · 13271 days ago · 7 km deep · 73 km away
  47. 1.71 km ENE of Alamo, California · 13270 days ago · 6 km deep · 49 km away
  48. 1.61 km ENE of Alamo, California · 13270 days ago · 6 km deep · 50 km away
  49. 1.76 km ENE of Corralitos, California · 13269 days ago · 9 km deep · 95 km away
  50. 1.63 km ENE of Alamo, California · 13269 days ago · 5 km deep · 52 km away
  51. 2.53 km NNE of San Leandro, California · 13267 days ago · 7 km deep · 35 km away
  52. 1.83 km NW of Diablo, California · 13266 days ago · 1 km deep · 52 km away
  53. 1.91 km ENE of Alamo, California · 13265 days ago · 6 km deep · 49 km away
  54. 3.315 km E of Seven Trees, California · 13264 days ago · 6 km deep · 83 km away
  55. 1.63 km ENE of Corralitos, California · 13264 days ago · 14 km deep · 95 km away
  56. 1.51 km NNE of Interlaken, California · 13264 days ago · 13 km deep · 100 km away
  57. 3.55 km SW of Yountville, California · 13263 days ago · 10 km deep · 83 km away
  58. 1.512 km NNE of Morgan Hill, California · 13263 days ago · 4 km deep · 88 km away
  59. 2.04 km WNW of Day Valley, California · 13262 days ago · 17 km deep · 82 km away
  60. 1.97 km N of Day Valley, California · 13262 days ago · 5 km deep · 81 km away

The first 60 of 102.

Before

  1. 2.93 km WNW of Pacifica, California · 13291 days ago · 7 km deep · 2 km away
  2. 1.716 km W of Bolinas, California · 13291 days ago · 9 km deep · 46 km away
  3. 2.13 km E of Alamo, California · 13292 days ago · 2 km deep · 52 km away
  4. 1.72 km ESE of Danville, California · 13292 days ago · 6 km deep · 50 km away
  5. 1.54 km ESE of Roseland, California · 13294 days ago · 7 km deep · 88 km away
  6. 1.54 km SSE of Lexington Hills, California · 13294 days ago · 11 km deep · 74 km away
  7. 2.52 km ENE of Alamo, California · 13294 days ago · 3 km deep · 51 km away
  8. 2.42 km NE of Alamo, California · 13294 days ago · 5 km deep · 51 km away
  9. 1.615 km N of Morgan Hill, California · 13294 days ago · 5 km deep · 84 km away
  10. 1.84 km ESE of Roseland, California · 13294 days ago · 7 km deep · 88 km away
  11. 1.92 km NNE of Piedmont, California · 13295 days ago · 11 km deep · 35 km away
  12. 3.415 km E of Seven Trees, California · 13295 days ago · 6 km deep · 83 km away
  13. 1.66 km WNW of Day Valley, California · 13295 days ago · 16 km deep · 80 km away
  14. 1.72 km ENE of Alamo, California · 13296 days ago · 3 km deep · 51 km away
  15. 1.615 km N of Morgan Hill, California · 13296 days ago · 6 km deep · 85 km away
  16. 1.62 km ESE of Danville, California · 13297 days ago · 6 km deep · 51 km away
  17. 1.72 km ESE of Danville, California · 13297 days ago · 7 km deep · 50 km away
  18. 1.63 km NW of Diablo, California · 13297 days ago · 7 km deep · 52 km away
  19. 2.88 km NNE of Day Valley, California · 13297 days ago · 4 km deep · 83 km away
  20. 1.61 km ENE of Alamo, California · 13297 days ago · 4 km deep · 49 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc157691. Read Sat, Oct 3, 2026, 4:53 PM UTC.