M1.9 earthquake 6 km S of Sunol, California

Magnitude

1.9 (md), micro

Local time

Thu, Apr 2, 1981, 10:32 AM PST

UTC

1981-04-02 18:32:11 UTC

Depth

9.5 km (5.9 mi), shallow

Epicenter

37.535° N, 121.886° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.2 km horizontally, 0.9 km in depth

Magnitude uncertainty

±0.22

Depth from

From location

Station coverage gap

60°

Stations used

42

• Sunol, CaliforniaPopulation 913. Forecast7 kmS
• Fremont, CaliforniaPopulation 232,206. Forecast9 kmE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast508 kmNW

After

1. 2.110 km SSE of San Juan Bautista, CaliforniaThu, Apr 2, 11:28 AM PST · 16609 days ago · 7 km deep · 93 km away
2. 2.02 km WSW of San Juan Bautista, CaliforniaThu, Apr 2, 12:49 PM PST · 16609 days ago · 7 km deep · 83 km away
3. 1.65 km SSE of San Juan Bautista, CaliforniaThu, Apr 2, 11:16 PM PST · 16608 days ago · 6 km deep · 88 km away
4. 1.62 km NW of Bonny Doon, CaliforniaFri, Apr 3, 3:29 PM PST · 16608 days ago · 12 km deep · 59 km away
5. 1.616 km SSE of Livermore, CaliforniaSat, Apr 4, 8:49 PM PST · 16606 days ago · -1 km deep · 19 km away
6. 1.59 km NE of Gilroy, CaliforniaSun, Apr 5, 1:30 AM PST · 16606 days ago · 8 km deep · 63 km away
7. 1.74 km W of Westley, CaliforniaMon, Apr 6, 2:48 AM PST · 16605 days ago · 8 km deep · 56 km away
8. 1.58 km E of East Foothills, CaliforniaMon, Apr 6, 4:16 AM PST · 16605 days ago · 8 km deep · 24 km away
9. 1.53 km WSW of Campbell, CaliforniaMon, Apr 6, 6:39 AM PST · 16605 days ago · 4 km deep · 30 km away
10. 1.53 km NNE of Pleasanton, CaliforniaTue, Apr 7, 2:32 AM PST · 16604 days ago · 14 km deep · 18 km away
11. 1.912 km N of Livermore, CaliforniaTue, Apr 7, 3:30 AM PST · 16604 days ago · 10 km deep · 31 km away
12. 2.22 km NE of Ridgemark, CaliforniaWed, Apr 8, 9:17 PM PST · 16602 days ago · 7 km deep · 92 km away
13. 1.89 km NNW of Hollister, CaliforniaThu, Apr 9, 12:13 AM PST · 16602 days ago · 0 km deep · 77 km away
14. 1.74 km NE of Blackhawk, CaliforniaFri, Apr 10, 3:03 PM PST · 16601 days ago · 5 km deep · 35 km away
15. 3.410 km NNE of Livermore, CaliforniaSat, Apr 11, 3:47 PM PST · 16600 days ago · 13 km deep · 30 km away
16. 1.814 km E of Seven Trees, CaliforniaSat, Apr 11, 7:08 PM PST · 16600 days ago · 1 km deep · 33 km away
17. 1.610 km E of Gilroy, CaliforniaMon, Apr 13, 11:21 PM PST · 16597 days ago · 8 km deep · 71 km away
18. 1.65 km ENE of San Martin, CaliforniaTue, Apr 14, 2:43 PM PST · 16597 days ago · 3 km deep · 57 km away
19. 1.822 km SE of Livermore, CaliforniaTue, Apr 14, 2:54 PM PST · 16597 days ago · 2 km deep · 24 km away
20. 2.73 km W of San Juan Bautista, CaliforniaWed, Apr 15, 10:03 AM PST · 16596 days ago · 6 km deep · 81 km away
21. 2.83 km W of San Juan Bautista, CaliforniaWed, Apr 15, 10:26 AM PST · 16596 days ago · 7 km deep · 81 km away
22. 2.23 km W of San Juan Bautista, CaliforniaWed, Apr 15, 4:09 PM PST · 16596 days ago · 6 km deep · 81 km away
23. 1.713 km N of Hollister, CaliforniaFri, Apr 17, 3:17 AM PST · 16594 days ago · 7 km deep · 77 km away
24. 1.52 km SSE of Tres Pinos, CaliforniaSun, Apr 19, 7:01 AM PST · 16592 days ago · 6 km deep · 99 km away
25. 1.78 km ESE of Blackhawk, CaliforniaSun, Apr 19, 10:59 PM PST · 16591 days ago · 7 km deep · 30 km away
26. 1.94 km ESE of Interlaken, CaliforniaTue, Apr 21, 4:24 PM PST · 16590 days ago · 10 km deep · 69 km away
27. 1.97 km SE of Sunol, CaliforniaWed, Apr 22, 2:07 AM PST · 16589 days ago · 5 km deep · 4 km away
28. 1.72 km NW of Orinda, CaliforniaWed, Apr 22, 11:57 AM PST · 16589 days ago · 11 km deep · 48 km away
29. 1.82 km NNW of Brentwood, CaliforniaThu, Apr 23, 11:37 PM PST · 16587 days ago · 0 km deep · 49 km away
30. 1.68 km SSW of Antioch, CaliforniaFri, Apr 24, 12:54 AM PST · 16587 days ago · 0 km deep · 44 km away
31. 1.67 km NNE of East Foothills, CaliforniaSat, Apr 25, 10:09 AM PST · 16586 days ago · 11 km deep · 15 km away
32. 4.18 km N of Day Valley, CaliforniaSat, Apr 25, 11:41 AM PST · 16586 days ago · 13 km deep · 47 km away
33. 1.66 km SSW of Ridgemark, CaliforniaMon, Apr 27, 12:43 PM PDT · 16584 days ago · 9 km deep · 97 km away
34. 2.616 km N of Morgan Hill, CaliforniaMon, Apr 27, 4:09 PM PDT · 16584 days ago · 6 km deep · 36 km away
35. 2.22 km ESE of Aromas, CaliforniaWed, Apr 29, 1:27 AM PDT · 16582 days ago · 7 km deep · 77 km away
36. 1.77 km W of Mountain House, CaliforniaWed, Apr 29, 4:02 AM PDT · 16582 days ago · 9 km deep · 36 km away
37. 1.69 km ESE of East Foothills, CaliforniaWed, Apr 29, 6:22 AM PDT · 16582 days ago · 8 km deep · 25 km away
38. 2.29 km ESE of East Foothills, CaliforniaWed, Apr 29, 6:28 AM PDT · 16582 days ago · 8 km deep · 25 km away
39. 1.78 km W of Gilroy, CaliforniaFri, May 1, 11:20 AM PDT · 16580 days ago · 7 km deep · 62 km away
40. 2.03 km SW of Broadmoor, CaliforniaSun, May 3, 3:45 PM PDT · 16578 days ago · 7 km deep · 56 km away
41. 1.66 km WSW of Pescadero, CaliforniaSun, May 3, 9:33 PM PDT · 16578 days ago · 6 km deep · 61 km away
42. 1.58 km NE of Gilroy, CaliforniaMon, May 4, 4:25 AM PDT · 16577 days ago · 3 km deep · 64 km away
43. 1.811 km NNW of Pacific Grove, CaliforniaMon, May 4, 8:05 AM PDT · 16577 days ago · 0 km deep · 92 km away
44. 2.11 km NE of Tres Pinos, CaliforniaWed, May 6, 1:14 AM PDT · 16575 days ago · 9 km deep · 97 km away
45. 2.93 km W of San Juan Bautista, CaliforniaWed, May 6, 2:16 AM PDT · 16575 days ago · 5 km deep · 81 km away
46. 1.7Northern CaliforniaThu, May 7, 12:58 AM PDT · 16574 days ago · 9 km deep · 62 km away
47. 1.86 km NE of Ridgemark, CaliforniaThu, May 7, 11:07 AM PDT · 16574 days ago · 7 km deep · 90 km away
48. 2.714 km E of East Foothills, CaliforniaFri, May 8, 3:24 PM PDT · 16573 days ago · 6 km deep · 28 km away
49. 1.89 km ENE of Gilroy, CaliforniaSat, May 9, 7:35 PM PDT · 16572 days ago · 8 km deep · 68 km away
50. 2.420 km SW of Diablo Grande, CaliforniaSun, May 10, 12:50 AM PDT · 16571 days ago · 72 km deep · 45 km away
51. 1.79 km E of Gilroy, CaliforniaSun, May 10, 7:25 AM PDT · 16571 days ago · 8 km deep · 69 km away
52. 2.82 km ENE of San Leandro, CaliforniaMon, May 11, 4:50 AM PDT · 16570 days ago · 11 km deep · 31 km away
53. 1.70 km NNW of Concord, CaliforniaMon, May 11, 2:18 PM PDT · 16570 days ago · 13 km deep · 52 km away
54. 1.611 km ESE of East Foothills, CaliforniaTue, May 12, 8:59 PM PDT · 16569 days ago · 7 km deep · 28 km away
55. 2.29 km ENE of Gilroy, CaliforniaWed, May 13, 10:10 PM PDT · 16567 days ago · 9 km deep · 66 km away
56. 1.611 km E of Blackhawk, CaliforniaFri, May 15, 2:03 PM PDT · 16566 days ago · 11 km deep · 35 km away
57. 1.63 km NNE of Union City, CaliforniaFri, May 15, 5:27 PM PDT · 16566 days ago · 7 km deep · 14 km away
58. 1.913 km N of Morgan Hill, CaliforniaFri, May 15, 7:08 PM PDT · 16566 days ago · 3 km deep · 39 km away
59. 1.910 km SW of Brentwood, CaliforniaFri, May 15, 10:18 PM PDT · 16565 days ago · 19 km deep · 37 km away
60. 1.710 km SSW of Brentwood, CaliforniaFri, May 15, 11:15 PM PDT · 16565 days ago · 21 km deep · 37 km away

The first 60 of 101.

Before

1. 1.68 km NE of San Martin, CaliforniaThu, Apr 2, 1:30 AM PST · 16609 days ago · 6 km deep · 54 km away
2. 1.63 km WSW of Hollister, CaliforniaThu, Apr 2, 1:04 AM PST · 16609 days ago · 7 km deep · 86 km away
3. 1.70 km WNW of Hollister, CaliforniaTue, Mar 31, 4:27 PM PST · 16611 days ago · 8 km deep · 87 km away
4. 2.112 km NNW of Hollister, CaliforniaTue, Mar 31, 1:26 AM PST · 16611 days ago · 4 km deep · 75 km away
5. 2.94 km SSW of Ridgemark, CASat, Mar 28, 12:28 PM PST · 16614 days ago · 3 km deep · 95 km away
6. 1.515 km SSE of Livermore, CaliforniaSat, Mar 28, 10:31 AM PST · 16614 days ago · 2 km deep · 18 km away
7. 1.710 km E of San Martin, CaliforniaSat, Mar 28, 8:25 AM PST · 16614 days ago · 9 km deep · 61 km away
8. 2.42 km SSW of Hollister, CaliforniaFri, Mar 27, 6:54 PM PST · 16615 days ago · 9 km deep · 89 km away
9. 1.89 km NNE of San Juan Bautista, CaliforniaThu, Mar 26, 8:28 PM PST · 16616 days ago · 4 km deep · 76 km away
10. 1.614 km SSE of Livermore, CaliforniaThu, Mar 26, 8:03 AM PST · 16616 days ago · 2 km deep · 18 km away
11. 1.713 km N of Morgan Hill, CaliforniaWed, Mar 25, 6:33 PM PST · 16617 days ago · 6 km deep · 38 km away
12. 3.114 km SSE of Livermore, CaliforniaWed, Mar 25, 8:58 AM PST · 16617 days ago · 2 km deep · 18 km away
13. 1.69 km NE of San Martin, CaliforniaTue, Mar 24, 6:00 PM PST · 16618 days ago · 7 km deep · 53 km away
14. 2.23 km NNW of Castro Valley, CaliforniaMon, Mar 23, 9:38 PM PST · 16618 days ago · 10 km deep · 28 km away
15. 2.37 km E of East Foothills, CaliforniaMon, Mar 23, 1:34 AM PST · 16619 days ago · 8 km deep · 23 km away
16. 2.314 km E of Seven Trees, CaliforniaSun, Mar 22, 6:44 AM PST · 16620 days ago · 4 km deep · 33 km away
17. 2.115 km E of Seven Trees, CaliforniaSat, Mar 21, 9:30 PM PST · 16620 days ago · 3 km deep · 34 km away
18. 1.64 km NW of Dublin, CaliforniaSat, Mar 21, 11:33 AM PST · 16621 days ago · 7 km deep · 23 km away
19. 1.69 km NE of Gilroy, CaliforniaSat, Mar 21, 1:31 AM PST · 16621 days ago · 9 km deep · 63 km away
20. 2.85 km NNE of Interlaken, CaliforniaFri, Mar 20, 2:54 PM PST · 16622 days ago · 12 km deep · 62 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1062019. Read Tue, Sep 22, 2026, 4:10 PM UTC.