M1.6 earthquake 5 km SW of Ridgemark, California

Magnitude

1.6 (md), micro

Local time

Mon, Sep 14, 1981, 10:43 AM PDT

UTC

1981-09-14 17:43:17 UTC

Depth

9.4 km (5.8 mi), shallow

Epicenter

36.776° N, 121.403° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.2 km horizontally, 0.6 km in depth

Magnitude uncertainty

±0.14

Depth from

From location

Station coverage gap

55°

Stations used

25

• Ridgemark, CaliforniaPopulation 3,016. Forecast5 kmSW
• Hollister, CaliforniaPopulation 37,462. Forecast8 kmS
• Salinas, CaliforniaPopulation 157,380. Forecast25 kmENE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast417 kmNW

After

1. 2.011 km SSW of Loyola, CaliforniaMon, Sep 14, 1:49 PM PDT · 16450 days ago · 9 km deep · 86 km away
2. 1.615 km N of Morgan Hill, CaliforniaWed, Sep 16, 2:30 AM PDT · 16449 days ago · 6 km deep · 59 km away
3. 1.615 km N of Morgan Hill, CaliforniaWed, Sep 16, 2:46 AM PDT · 16449 days ago · 6 km deep · 58 km away
4. 2.54 km SW of Tres Pinos, CaliforniaThu, Sep 17, 6:16 AM PDT · 16447 days ago · 9 km deep · 5 km away
5. 1.69 km SSW of Tres Pinos, CaliforniaThu, Sep 17, 8:48 AM PDT · 16447 days ago · 2 km deep · 9 km away
6. 1.638 km W of Three Rocks, CaliforniaThu, Sep 17, 9:42 PM PDT · 16447 days ago · 4 km deep · 58 km away
7. 1.714 km E of Seven Trees, CaliforniaFri, Sep 18, 3:26 AM PDT · 16446 days ago · 4 km deep · 62 km away
8. 1.511 km SSE of Tres Pinos, CaliforniaFri, Sep 18, 7:20 AM PDT · 16446 days ago · 16 km deep · 14 km away
9. 1.925 km SE of Big Sur, CaliforniaFri, Sep 18, 1:19 PM PDT · 16446 days ago · 9 km deep · 75 km away
10. 2.424 km ENE of Soledad, CaliforniaSun, Sep 20, 10:32 AM PDT · 16444 days ago · 3 km deep · 43 km away
11. 1.521 km ENE of East Foothills, CaliforniaSun, Sep 20, 5:23 PM PDT · 16444 days ago · 6 km deep · 79 km away
12. 2.19 km ESE of East Foothills, CaliforniaSun, Sep 20, 9:46 PM PDT · 16444 days ago · 5 km deep · 70 km away
13. 3.313 km SSE of Tres Pinos, CaliforniaMon, Sep 21, 5:41 AM PDT · 16443 days ago · 3 km deep · 16 km away
14. 2.121 km NE of Soledad, CaliforniaMon, Sep 21, 6:32 AM PDT · 16443 days ago · 4 km deep · 32 km away
15. 1.926 km SE of Big Sur, CaliforniaMon, Sep 21, 1:07 PM PDT · 16443 days ago · 5 km deep · 75 km away
16. 2.03 km SW of Davenport, CaliforniaMon, Sep 21, 9:22 PM PDT · 16443 days ago · 11 km deep · 76 km away
17. 2.44 km SW of Tres Pinos, CaliforniaTue, Sep 22, 5:09 PM PDT · 16442 days ago · 9 km deep · 5 km away
18. 1.82 km E of Tres Pinos, CaliforniaWed, Sep 23, 1:38 AM PDT · 16442 days ago · 8 km deep · 10 km away
19. 1.720 km W of Volta, CaliforniaWed, Sep 23, 9:20 AM PDT · 16441 days ago · 0 km deep · 41 km away
20. 2.330 km ENE of Soledad, CaliforniaWed, Sep 23, 6:47 PM PDT · 16441 days ago · 7 km deep · 40 km away
21. 1.923 km ENE of Soledad, CaliforniaThu, Sep 24, 6:39 AM PDT · 16440 days ago · 3 km deep · 43 km away
22. 3.23 km S of San Juan Bautista, CaliforniaThu, Sep 24, 7:00 AM PDT · 16440 days ago · 8 km deep · 13 km away
23. 3.13 km S of San Juan Bautista, CaliforniaThu, Sep 24, 2:44 PM PDT · 16440 days ago · 7 km deep · 12 km away
24. 1.64 km S of San Juan Bautista, CaliforniaThu, Sep 24, 3:20 PM PDT · 16440 days ago · 7 km deep · 12 km away
25. 2.123 km NE of San Lucas, CaliforniaFri, Sep 25, 12:42 PM PDT · 16439 days ago · 7 km deep · 78 km away
26. 1.84 km SW of Tres Pinos, CaliforniaFri, Sep 25, 5:22 PM PDT · 16439 days ago · 8 km deep · 5 km away
27. 1.85 km E of Fremont, CaliforniaSat, Sep 26, 10:37 AM PDT · 16438 days ago · 9 km deep · 97 km away
28. 2.118 km SSE of Tres Pinos, CaliforniaSat, Sep 26, 12:01 PM PDT · 16438 days ago · 5 km deep · 20 km away
29. 1.75 km SSW of Gilroy, CaliforniaSat, Sep 26, 4:06 PM PDT · 16438 days ago · 4 km deep · 27 km away
30. 2.39 km ESE of East Foothills, CaliforniaSat, Sep 26, 10:41 PM PDT · 16438 days ago · 8 km deep · 69 km away
31. 2.49 km NE of Gilroy, CaliforniaSun, Sep 27, 12:57 AM PDT · 16438 days ago · 9 km deep · 33 km away
32. 1.927 km ENE of King City, CaliforniaSun, Sep 27, 1:01 AM PDT · 16438 days ago · 9 km deep · 67 km away
33. 2.123 km NE of Soledad, CaliforniaSun, Sep 27, 8:07 AM PDT · 16437 days ago · 9 km deep · 33 km away
34. 3.131 km NE of Soledad, CaliforniaSun, Sep 27, 10:02 PM PDT · 16437 days ago · 8 km deep · 37 km away
35. 1.67 km SSE of Gilroy, CaliforniaSun, Sep 27, 11:59 PM PDT · 16437 days ago · 5 km deep · 23 km away
36. 4.03 km S of San Juan Bautista, CaliforniaMon, Sep 28, 12:34 AM PDT · 16437 days ago · 9 km deep · 13 km away
37. 1.812 km ESE of Tres Pinos, CaliforniaMon, Sep 28, 9:02 AM PDT · 16436 days ago · 10 km deep · 19 km away
38. 2.44 km S of San Juan Bautista, CaliforniaMon, Sep 28, 10:54 AM PDT · 16436 days ago · 9 km deep · 12 km away
39. 1.54 km S of San Juan Bautista, CaliforniaMon, Sep 28, 11:46 AM PDT · 16436 days ago · 8 km deep · 12 km away
40. 2.34 km S of San Juan Bautista, CaliforniaMon, Sep 28, 11:51 AM PDT · 16436 days ago · 7 km deep · 12 km away
41. 2.54 km SSE of San Juan Bautista, CaliforniaMon, Sep 28, 3:02 PM PDT · 16436 days ago · 7 km deep · 12 km away
42. 2.44 km SSE of San Juan Bautista, CaliforniaMon, Sep 28, 3:10 PM PDT · 16436 days ago · 7 km deep · 11 km away
43. 2.13 km SSW of San Juan Bautista, CaliforniaTue, Sep 29, 4:18 AM PDT · 16435 days ago · 7 km deep · 14 km away
44. 2.74 km S of San Juan Bautista, CaliforniaTue, Sep 29, 2:32 PM PDT · 16435 days ago · 7 km deep · 12 km away
45. 1.623 km NE of San Lucas, CaliforniaWed, Sep 30, 6:04 AM PDT · 16434 days ago · 5 km deep · 72 km away
46. 3.222 km NE of Soledad, CaliforniaThu, Oct 1, 12:22 PM PDT · 16433 days ago · 7 km deep · 28 km away
47. 1.921 km NE of Soledad, CaliforniaThu, Oct 1, 3:13 PM PDT · 16433 days ago · 6 km deep · 29 km away
48. 1.813 km S of Tres Pinos, CaliforniaThu, Oct 1, 4:31 PM PDT · 16433 days ago · 3 km deep · 16 km away
49. 1.54 km SSE of Diablo Grande, CaliforniaSat, Oct 3, 4:17 AM PDT · 16431 days ago · 8 km deep · 66 km away
50. 1.89 km NE of Milpitas, CaliforniaSat, Oct 3, 8:29 PM PDT · 16431 days ago · 7 km deep · 90 km away
51. 1.921 km NE of Soledad, CaliforniaSun, Oct 4, 8:41 AM PDT · 16430 days ago · 6 km deep · 29 km away
52. 2.322 km SE of Livermore, CaliforniaMon, Oct 5, 2:55 AM PDT · 16430 days ago · 7 km deep · 89 km away
53. 2.33 km S of San Juan Bautista, CaliforniaMon, Oct 5, 9:53 AM PDT · 16429 days ago · 7 km deep · 13 km away
54. 2.010 km SW of Ridgemark, CaliforniaMon, Oct 5, 2:36 PM PDT · 16429 days ago · 10 km deep · 5 km away
55. 1.86 km SE of Lexington Hills, CaliforniaTue, Oct 6, 12:22 AM PDT · 16429 days ago · 13 km deep · 60 km away
56. 2.110 km SSW of Tracy, CaliforniaTue, Oct 6, 5:34 AM PDT · 16428 days ago · 9 km deep · 97 km away
57. 2.123 km ENE of Soledad, CaliforniaTue, Oct 6, 5:39 AM PDT · 16428 days ago · 5 km deep · 41 km away
58. 2.227 km E of Tres Pinos, CaliforniaWed, Oct 7, 2:17 AM PDT · 16428 days ago · 3 km deep · 34 km away
59. 1.94 km SSE of San Juan Bautista, CaliforniaWed, Oct 7, 4:39 PM PDT · 16427 days ago · 7 km deep · 12 km away
60. 1.621 km NE of Soledad, CaliforniaWed, Oct 7, 9:13 PM PDT · 16427 days ago · 3 km deep · 32 km away

The first 60 of 144.

Before

1. 2.113 km S of Tres Pinos, CaliforniaMon, Sep 14, 4:10 AM PDT · 16450 days ago · 3 km deep · 15 km away
2. 3.313 km S of Tres Pinos, CaliforniaMon, Sep 14, 1:19 AM PDT · 16451 days ago · 4 km deep · 15 km away
3. 2.742 km W of Lockwood, CaliforniaSun, Sep 13, 5:56 PM PDT · 16451 days ago · 10 km deep · 98 km away
4. 2.67 km W of Gilroy, CaliforniaSun, Sep 13, 6:16 AM PDT · 16451 days ago · 4 km deep · 33 km away
5. 1.77 km ESE of Prunedale, CaliforniaSun, Sep 13, 4:18 AM PDT · 16451 days ago · 8 km deep · 17 km away
6. 1.638 km W of Lockwood, CaliforniaSat, Sep 12, 11:30 PM PDT · 16452 days ago · 5 km deep · 93 km away
7. 1.940 km W of Lockwood, CaliforniaSat, Sep 12, 9:15 PM PDT · 16452 days ago · 13 km deep · 98 km away
8. 1.840 km W of Lockwood, CaliforniaSat, Sep 12, 9:12 PM PDT · 16452 days ago · 6 km deep · 95 km away
9. 2.541 km W of Lockwood, CaliforniaSat, Sep 12, 9:06 PM PDT · 16452 days ago · 10 km deep · 97 km away
10. 2.744 km NW of San Simeon, CaliforniaSat, Sep 12, 8:38 PM PDT · 16452 days ago · 8 km deep · 100 km away
11. 3.09 km NE of San Martin, CaliforniaSat, Sep 12, 8:49 AM PDT · 16452 days ago · 8 km deep · 43 km away
12. 1.737 km W of Three Rocks, CaliforniaFri, Sep 11, 7:31 PM PDT · 16453 days ago · 3 km deep · 59 km away
13. 1.530 km E of Tres Pinos, CaliforniaFri, Sep 11, 9:27 AM PDT · 16453 days ago · 5 km deep · 38 km away
14. 2.7Central CaliforniaFri, Sep 11, 5:10 AM PDT · 16453 days ago · 11 km deep · 70 km away
15. 2.237 km W of Three Rocks, CaliforniaThu, Sep 10, 10:41 PM PDT · 16454 days ago · 6 km deep · 59 km away
16. 1.638 km W of Three Rocks, CaliforniaThu, Sep 10, 9:42 PM PDT · 16454 days ago · 5 km deep · 58 km away
17. 2.338 km W of Three Rocks, CaliforniaThu, Sep 10, 9:40 PM PDT · 16454 days ago · 0 km deep · 58 km away
18. 2.737 km W of Three Rocks, CaliforniaThu, Sep 10, 9:09 PM PDT · 16454 days ago · 7 km deep · 59 km away
19. 2.128 km SW of South Dos Palos, CAThu, Sep 10, 12:52 PM PDT · 16454 days ago · 4 km deep · 47 km away
20. 2.96 km S of San Juan Bautista, CaliforniaWed, Sep 9, 6:38 AM PDT · 16455 days ago · 10 km deep · 11 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1067618. Read Mon, Sep 28, 2026, 9:54 PM UTC.