California earthquakes

M2.2 earthquake 3km WSW of Ridgemark, CA

A magnitude 2.2 earthquake struck 3km WSW of Ridgemark, CA on Wed, Dec 4, 2019, 5:14 AM PST (13:14 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M3.9 10km ENE of Morgan Hill, CA. This one was a foreshock.

Ridgemark 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
2.2 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
2019-12-04 13:14:53 UTC
Depth
8.1 km (5.0 mi), shallow
Epicenter
36.801° N, 121.392° W
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 0.2 km horizontally, 0.4 km in depth
Magnitude uncertainty
±0.24
Depth from
From location
Station coverage gap
57°
Stations used
44

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 124 in the 60 days after this one and 53 in the 30 days before it.

After

  1. 1.614km SSE of Tres Pinos, CA · 2497 days ago · 3 km deep · 18 km away
  2. 2.17km NNW of Pinnacles, CA · 2496 days ago · 3 km deep · 30 km away
  3. 2.45km SW of Tres Pinos, CA · 2495 days ago · 6 km deep · 6 km away · felt by 4
  4. 2.511km S of Tres Pinos, CA · 2495 days ago · 1 km deep · 14 km away · felt by 1
  5. 1.715km NW of Pinnacles, CA · 2495 days ago · 10 km deep · 23 km away
  6. 1.715km NW of Pinnacles, CA · 2494 days ago · 10 km deep · 23 km away
  7. 2.78km ENE of San Martin, CA · 2494 days ago · 6 km deep · 37 km away · felt by 12
  8. 3.016km NW of Pinnacles, CA · 2492 days ago · 6 km deep · 21 km away · felt by 11
  9. 1.622km ENE of San Lucas, CA · 2492 days ago · 6 km deep · 81 km away
  10. 2.13km SW of San Juan Bautista, CA · 2491 days ago · 6 km deep · 15 km away
  11. 1.54km E of Los Gatos, CA · 2491 days ago · 19 km deep · 67 km away
  12. 2.23km N of Pinnacles, CA · 2491 days ago · 9 km deep · 35 km away
  13. 2.12km SSE of Ridgemark, CA · 2491 days ago · 4 km deep · 3 km away
  14. 1.713km ESE of Pinnacles, CA · 2490 days ago · 7 km deep · 49 km away
  15. 2.217km NW of Pinnacles, CA · 2490 days ago · 6 km deep · 21 km away
  16. 1.916km NW of Pinnacles, CA · 2489 days ago · 7 km deep · 21 km away
  17. 1.61km SSE of Palo Alto, CA · 2489 days ago · 10 km deep · 96 km away
  18. 2.13km NE of New Idria, CA · 2488 days ago · 15 km deep · 77 km away
  19. 2.41km NE of New Idria, CA · 2488 days ago · 18 km deep · 78 km away · felt by 1
  20. 1.716km NW of Pinnacles, CA · 2487 days ago · 10 km deep · 21 km away
  21. 2.17km ENE of Pinnacles, CA · 2484 days ago · 10 km deep · 41 km away
  22. 1.79km ENE of Morgan Hill, CA · 2484 days ago · 0 km deep · 42 km away
  23. 1.616km NW of Pinnacles, CA · 2483 days ago · 9 km deep · 21 km away
  24. 2.012km SE of Pinnacles, CA · 2482 days ago · 8 km deep · 49 km away
  25. 1.715km NW of Pinnacles, CA · 2482 days ago · 5 km deep · 23 km away
  26. 1.62km SW of San Juan Bautista, CA · 2482 days ago · 5 km deep · 15 km away
  27. 2.215km E of Seven Trees, CA · 2479 days ago · 6 km deep · 61 km away · felt by 1
  28. 1.76km SW of Gilroy, CA · 2479 days ago · 4 km deep · 27 km away · felt by 1
  29. 1.87km ENE of Pinnacles, CA · 2478 days ago · 7 km deep · 39 km away
  30. 1.612km ESE of Gilroy, CA · 2478 days ago · 7 km deep · 18 km away
  31. 2.516km NW of Pinnacles, CA · 2478 days ago · 5 km deep · 21 km away · felt by 4
  32. 1.820km SE of Pinnacles, CA · 2478 days ago · 5 km deep · 57 km away
  33. 2.913km S of Tres Pinos, CA · 2478 days ago · 2 km deep · 16 km away · felt by 1
  34. 2.18km ESE of Pinnacles, CA · 2477 days ago · 6 km deep · 44 km away
  35. 2.213km NW of Pinnacles, CA · 2475 days ago · 5 km deep · 24 km away
  36. 2.57km E of Pinnacles, CA · 2474 days ago · 9 km deep · 41 km away · felt by 1
  37. 1.711km SSW of San Lucas, CA · 2473 days ago · 13 km deep · 90 km away
  38. 1.87km NNW of Pinnacles, CA · 2473 days ago · 3 km deep · 31 km away
  39. 1.716km E of Seven Trees, CA · 2472 days ago · 6 km deep · 58 km away
  40. 2.616km SSE of Tres Pinos, CA · 2471 days ago · 6 km deep · 20 km away · felt by 3
  41. 1.813km SE of Pinnacles, CA · 2471 days ago · 1 km deep · 50 km away
  42. 1.817km E of Pinnacles, CA · 2470 days ago · 13 km deep · 50 km away
  43. 2.413km SE of Pinnacles, CA · 2470 days ago · 1 km deep · 50 km away · felt by 1
  44. 1.57km ENE of Pinnacles, CA · 2469 days ago · 6 km deep · 41 km away
  45. 1.96km ESE of Pinnacles, CA · 2468 days ago · 9 km deep · 42 km away
  46. 3.910km ENE of Morgan Hill, CA · 2468 days ago · 5 km deep · 44 km away · felt by 2,804 · tsunami flag
  47. 2.54km ESE of Pinnacles, CA · 2468 days ago · 5 km deep · 41 km away · felt by 3
  48. 2.312km S of Tres Pinos, CA · 2467 days ago · 4 km deep · 16 km away · felt by 1
  49. 2.212km S of Tres Pinos, CA · 2467 days ago · 4 km deep · 16 km away
  50. 3.322km NE of San Lucas, CA · 2467 days ago · 7 km deep · 80 km away · felt by 10
  51. 1.68km NW of Pinnacles, CA · 2467 days ago · 8 km deep · 29 km away
  52. 1.77km ESE of Pinnacles, CA · 2467 days ago · 5 km deep · 44 km away
  53. 1.916km NW of Pinnacles, CA · 2466 days ago · 5 km deep · 21 km away
  54. 2.07km NNW of Pinnacles, CA · 2465 days ago · 5 km deep · 31 km away
  55. 2.622km NE of San Lucas, CA · 2465 days ago · 7 km deep · 80 km away
  56. 3.05km SSW of Gilroy, CA · 2464 days ago · 3 km deep · 25 km away · felt by 250
  57. 1.616km S of Tres Pinos, CA · 2464 days ago · 10 km deep · 19 km away
  58. 2.75km SSW of Gilroy, CA · 2464 days ago · 3 km deep · 25 km away · felt by 45
  59. 2.58km N of Lopez Point, CA · 2464 days ago · 3 km deep · 80 km away
  60. 2.715km NW of Pinnacles, CA · 2464 days ago · 9 km deep · 22 km away · felt by 7

The first 60 of 124.

Before

  1. 2.04km NNW of Pinnacles, CA · 2497 days ago · 7 km deep · 34 km away
  2. 1.68km W of San Ardo, CA · 2497 days ago · 9 km deep · 93 km away
  3. 1.722km ENE of San Lucas, CA · 2498 days ago · 7 km deep · 81 km away
  4. 1.611km WSW of Saratoga, CA · 2500 days ago · 10 km deep · 81 km away
  5. 1.53km SW of San Juan Bautista, CA · 2501 days ago · 6 km deep · 15 km away
  6. 1.73km SW of San Juan Bautista, CA · 2501 days ago · 6 km deep · 15 km away
  7. 2.09km NE of Gilroy, CA · 2501 days ago · 8 km deep · 30 km away
  8. 1.92km E of Pinnacles, CA · 2502 days ago · 4 km deep · 38 km away
  9. 2.22km ENE of Pinnacles, CA · 2502 days ago · 4 km deep · 38 km away
  10. 2.08km ESE of Pinnacles, CA · 2502 days ago · 8 km deep · 44 km away
  11. 1.712km SE of Pinnacles, CA · 2502 days ago · 7 km deep · 49 km away
  12. 1.721km NE of San Lucas, CA · 2502 days ago · 7 km deep · 76 km away
  13. 1.513km SE of Sunol, CA · 2504 days ago · 7 km deep · 87 km away
  14. 2.05km NNE of Pinnacles, CA · 2505 days ago · 9 km deep · 35 km away
  15. 2.110km W of South Dos Palos, CA · 2506 days ago · 43 km deep · 59 km away
  16. 2.317km NW of Pinnacles, CA · 2506 days ago · 9 km deep · 21 km away · felt by 1
  17. 1.86km SW of Gilroy, CA · 2507 days ago · 8 km deep · 26 km away · felt by 1
  18. 2.53km NE of New Idria, CA · 2507 days ago · 19 km deep · 78 km away · felt by 2
  19. 2.015km E of Seven Trees, CA · 2509 days ago · 6 km deep · 61 km away · felt by 2
  20. 1.622km WSW of New Idria, CA · 2509 days ago · 5 km deep · 70 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc73311516. Read Mon, Oct 5, 2026, 1:51 PM UTC.