M1.8 earthquake 14 km E of Seven Trees, California

Magnitude

1.8 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Thu, Aug 27, 1981, 3:25 AM PDT

UTC

1981-08-27 10:25:33 UTC

Depth

2.2 km (1.4 mi), shallow

Epicenter

37.293° N, 121.675° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.1 km horizontally, 0.4 km in depth

Magnitude uncertainty

±0.17

Depth from

From location

Station coverage gap

37°

Stations used

42

• Seven Trees, CaliforniaPopulation 1,788. Forecast14 kmE
• Alum Rock, CaliforniaPopulation 15,536. Forecast16 kmESE
• San Jose, CaliforniaPopulation 997,368. Forecast20 kmESE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast475 kmNW

After

1. 2.111 km E of Blackhawk, CaliforniaThu, Aug 27, 4:10 AM PDT · 16472 days ago · 14 km deep · 61 km away
2. 1.715 km ESE of Tres Pinos, CaliforniaThu, Aug 27, 5:52 AM PDT · 16472 days ago · 10 km deep · 78 km away
3. 2.37 km E of East Foothills, CaliforniaFri, Aug 28, 9:56 AM PDT · 16471 days ago · 6 km deep · 10 km away
4. 1.89 km ENE of Gilroy, CaliforniaSat, Aug 29, 4:37 PM PDT · 16470 days ago · 9 km deep · 33 km away
5. 2.12 km E of San Leandro, CaliforniaSat, Aug 29, 8:29 PM PDT · 16470 days ago · 5 km deep · 62 km away
6. 2.412 km N of Livermore, CaliforniaSun, Aug 30, 2:04 AM PDT · 16469 days ago · 12 km deep · 56 km away
7. 2.011 km S of Tres Pinos, CaliforniaMon, Aug 31, 7:23 AM PDT · 16468 days ago · 4 km deep · 75 km away
8. 1.84 km W of Gonzales, CaliforniaMon, Aug 31, 12:13 PM PDT · 16468 days ago · 10 km deep · 89 km away
9. 1.65 km E of Fremont, CaliforniaTue, Sep 1, 2:15 AM PDT · 16467 days ago · 9 km deep · 36 km away
10. 2.06 km S of Sunol, CaliforniaTue, Sep 1, 10:57 PM PDT · 16466 days ago · 9 km deep · 33 km away
11. 1.74 km N of Milpitas, CaliforniaWed, Sep 2, 4:48 AM PDT · 16466 days ago · 3 km deep · 29 km away
12. 1.65 km E of Fremont, CaliforniaWed, Sep 2, 6:39 AM PDT · 16466 days ago · 10 km deep · 36 km away
13. 1.99 km SSW of Tres Pinos, CaliforniaWed, Sep 2, 10:53 PM PDT · 16465 days ago · 2 km deep · 71 km away
14. 1.518 km ESE of East Foothills, CaliforniaThu, Sep 3, 3:15 AM PDT · 16465 days ago · 1 km deep · 5 km away
15. 1.611 km ENE of Milpitas, CaliforniaThu, Sep 3, 8:57 AM PDT · 16465 days ago · 4 km deep · 24 km away
16. 2.221 km NE of Soledad, CaliforniaSat, Sep 5, 4:29 AM PDT · 16463 days ago · 8 km deep · 97 km away
17. 1.65 km SSW of Tres Pinos, CaliforniaSat, Sep 5, 9:06 AM PDT · 16463 days ago · 9 km deep · 68 km away
18. 1.89 km E of San Martin, CaliforniaSun, Sep 6, 10:40 AM PDT · 16462 days ago · 9 km deep · 29 km away
19. 1.611 km SSW of Loyola, CaliforniaSun, Sep 6, 11:23 AM PDT · 16462 days ago · 10 km deep · 42 km away
20. 1.55 km ESE of Aromas, CaliforniaMon, Sep 7, 9:28 AM PDT · 16461 days ago · 7 km deep · 48 km away
21. 3.121 km NE of Soledad, CaliforniaMon, Sep 7, 11:45 PM PDT · 16460 days ago · 5 km deep · 97 km away
22. 2.19 km ENE of Morgan Hill, CaliforniaTue, Sep 8, 8:10 AM PDT · 16460 days ago · 6 km deep · 19 km away
23. 1.62 km SSW of San Juan Bautista, CaliforniaTue, Sep 8, 3:11 PM PDT · 16460 days ago · 6 km deep · 54 km away
24. 3.26 km S of San Juan Bautista, CaliforniaTue, Sep 8, 11:54 PM PDT · 16459 days ago · 11 km deep · 58 km away
25. 2.96 km S of San Juan Bautista, CaliforniaWed, Sep 9, 6:38 AM PDT · 16459 days ago · 10 km deep · 57 km away
26. 2.128 km SW of South Dos Palos, CAThu, Sep 10, 12:52 PM PDT · 16458 days ago · 4 km deep · 90 km away
27. 1.530 km E of Tres Pinos, CaliforniaFri, Sep 11, 9:27 AM PDT · 16457 days ago · 5 km deep · 84 km away
28. 1.61 km WSW of Belmont, CaliforniaFri, Sep 11, 10:06 AM PDT · 16457 days ago · 3 km deep · 60 km away
29. 3.09 km NE of San Martin, CaliforniaSat, Sep 12, 8:49 AM PDT · 16456 days ago · 8 km deep · 20 km away
30. 1.77 km ESE of Prunedale, CaliforniaSun, Sep 13, 4:18 AM PDT · 16455 days ago · 8 km deep · 60 km away
31. 2.67 km W of Gilroy, CaliforniaSun, Sep 13, 6:16 AM PDT · 16455 days ago · 4 km deep · 33 km away
32. 3.313 km S of Tres Pinos, CaliforniaMon, Sep 14, 1:19 AM PDT · 16454 days ago · 4 km deep · 77 km away
33. 2.113 km S of Tres Pinos, CaliforniaMon, Sep 14, 4:10 AM PDT · 16454 days ago · 3 km deep · 77 km away
34. 1.65 km SW of Ridgemark, CaliforniaMon, Sep 14, 10:43 AM PDT · 16454 days ago · 9 km deep · 62 km away
35. 2.011 km SSW of Loyola, CaliforniaMon, Sep 14, 1:49 PM PDT · 16454 days ago · 9 km deep · 43 km away
36. 1.615 km N of Morgan Hill, CaliforniaWed, Sep 16, 2:30 AM PDT · 16452 days ago · 6 km deep · 5 km away
37. 1.615 km N of Morgan Hill, CaliforniaWed, Sep 16, 2:46 AM PDT · 16452 days ago · 6 km deep · 5 km away
38. 1.75 km WNW of Broadmoor, CaliforniaThu, Sep 17, 1:29 AM PDT · 16451 days ago · 4 km deep · 89 km away
39. 2.54 km SW of Tres Pinos, CaliforniaThu, Sep 17, 6:16 AM PDT · 16451 days ago · 9 km deep · 66 km away
40. 1.69 km SSW of Tres Pinos, CaliforniaThu, Sep 17, 8:48 AM PDT · 16451 days ago · 2 km deep · 71 km away
41. 1.714 km E of Seven Trees, CaliforniaFri, Sep 18, 3:26 AM PDT · 16450 days ago · 4 km deep · 0 km away
42. 1.511 km SSE of Tres Pinos, CaliforniaFri, Sep 18, 7:20 AM PDT · 16450 days ago · 16 km deep · 75 km away
43. 1.521 km ENE of East Foothills, CaliforniaSun, Sep 20, 5:23 PM PDT · 16448 days ago · 6 km deep · 21 km away
44. 2.19 km ESE of East Foothills, CaliforniaSun, Sep 20, 9:46 PM PDT · 16447 days ago · 5 km deep · 8 km away
45. 3.313 km SSE of Tres Pinos, CaliforniaMon, Sep 21, 5:41 AM PDT · 16447 days ago · 3 km deep · 78 km away
46. 2.121 km NE of Soledad, CaliforniaMon, Sep 21, 6:32 AM PDT · 16447 days ago · 4 km deep · 93 km away
47. 2.03 km SW of Davenport, CaliforniaMon, Sep 21, 9:22 PM PDT · 16446 days ago · 11 km deep · 59 km away
48. 2.44 km SW of Tres Pinos, CaliforniaTue, Sep 22, 5:09 PM PDT · 16446 days ago · 9 km deep · 66 km away
49. 1.82 km NNE of Woodside, CaliforniaTue, Sep 22, 5:53 PM PDT · 16446 days ago · 5 km deep · 53 km away
50. 1.82 km E of Tres Pinos, CaliforniaWed, Sep 23, 1:38 AM PDT · 16445 days ago · 8 km deep · 65 km away
51. 1.720 km W of Volta, CaliforniaWed, Sep 23, 9:20 AM PDT · 16445 days ago · 0 km deep · 51 km away
52. 2.330 km ENE of Soledad, CaliforniaWed, Sep 23, 6:47 PM PDT · 16445 days ago · 7 km deep · 99 km away
53. 1.88 km ENE of Blackhawk, CaliforniaWed, Sep 23, 9:25 PM PDT · 16444 days ago · 14 km deep · 63 km away
54. 3.23 km S of San Juan Bautista, CaliforniaThu, Sep 24, 7:00 AM PDT · 16444 days ago · 8 km deep · 54 km away
55. 3.13 km S of San Juan Bautista, CaliforniaThu, Sep 24, 2:44 PM PDT · 16444 days ago · 7 km deep · 55 km away
56. 1.64 km S of San Juan Bautista, CaliforniaThu, Sep 24, 3:20 PM PDT · 16444 days ago · 7 km deep · 55 km away
57. 1.84 km SW of Tres Pinos, CaliforniaFri, Sep 25, 5:22 PM PDT · 16443 days ago · 8 km deep · 66 km away
58. 1.85 km E of Fremont, CaliforniaSat, Sep 26, 10:37 AM PDT · 16442 days ago · 9 km deep · 36 km away
59. 2.118 km SSE of Tres Pinos, CaliforniaSat, Sep 26, 12:01 PM PDT · 16442 days ago · 5 km deep · 82 km away
60. 1.75 km SSW of Gilroy, CaliforniaSat, Sep 26, 4:06 PM PDT · 16442 days ago · 4 km deep · 38 km away

The first 60 of 136.

Before

1. 3.011 km SW of Brentwood, CaliforniaThu, Aug 27, 3:01 AM PDT · 16472 days ago · 16 km deep · 62 km away
2. 2.122 km SE of Livermore, CaliforniaWed, Aug 26, 6:45 AM PDT · 16473 days ago · 6 km deep · 30 km away
3. 1.815 km E of Seven Trees, CaliforniaWed, Aug 26, 3:39 AM PDT · 16473 days ago · 3 km deep · 1 km away
4. 1.611 km E of Blackhawk, CaliforniaWed, Aug 26, 3:08 AM PDT · 16473 days ago · 13 km deep · 61 km away
5. 1.615 km E of Seven Trees, CaliforniaTue, Aug 25, 7:15 AM PDT · 16474 days ago · 3 km deep · 1 km away
6. 1.98 km ENE of San Martin, CaliforniaTue, Aug 25, 1:55 AM PDT · 16474 days ago · 5 km deep · 24 km away
7. 2.33 km S of San Juan Bautista, CaliforniaMon, Aug 24, 2:34 AM PDT · 16475 days ago · 6 km deep · 55 km away
8. 1.830 km ENE of Soledad, CaliforniaSun, Aug 23, 7:45 PM PDT · 16476 days ago · 7 km deep · 99 km away
9. 2.18 km SW of Tres Pinos, CaliforniaSun, Aug 23, 2:47 PM PDT · 16476 days ago · 3 km deep · 67 km away
10. 1.76 km ENE of East Foothills, CaliforniaFri, Aug 21, 10:04 PM PDT · 16477 days ago · 4 km deep · 13 km away
11. 1.73 km NNW of Hollister, CaliforniaFri, Aug 21, 5:33 AM PDT · 16478 days ago · 7 km deep · 52 km away
12. 3.22 km SW of San Juan Bautista, CaliforniaFri, Aug 21, 5:00 AM PDT · 16478 days ago · 5 km deep · 53 km away
13. 1.68 km SE of San Juan Bautista, CaliforniaThu, Aug 20, 11:10 AM PDT · 16479 days ago · 5 km deep · 59 km away
14. 1.9Central CaliforniaThu, Aug 20, 9:25 AM PDT · 16479 days ago · 4 km deep · 59 km away
15. 3.19 km SW of Tres Pinos, CAThu, Aug 20, 5:55 AM PDT · 16479 days ago · 2 km deep · 68 km away
16. 1.52 km NE of Corralitos, CaliforniaThu, Aug 20, 2:40 AM PDT · 16479 days ago · 10 km deep · 33 km away
17. 2.027 km E of Tres Pinos, CaliforniaWed, Aug 19, 8:51 AM PDT · 16480 days ago · 7 km deep · 81 km away
18. 1.79 km SE of Livermore, CaliforniaTue, Aug 18, 8:06 PM PDT · 16481 days ago · 8 km deep · 38 km away
19. 1.922 km ENE of Soledad, CaliforniaTue, Aug 18, 5:41 PM PDT · 16481 days ago · 3 km deep · 98 km away
20. 1.92 km NE of Ridgemark, CaliforniaMon, Aug 17, 11:26 AM PDT · 16482 days ago · 7 km deep · 59 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1067156. Read Fri, Oct 2, 2026, 3:34 PM UTC.