M1.9 earthquake 3 km SW of Antioch, California

Magnitude

1.9 (md), micro

Local time

Wed, Nov 11, 1981, 11:05 AM PST

UTC

1981-11-11 19:05:07 UTC

Depth

19.1 km (11.8 mi), shallow

Epicenter

37.984° N, 121.834° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.4 km horizontally, 0.5 km in depth

Magnitude uncertainty

±0.14

Depth from

From location

Station coverage gap

134°

Stations used

13

• Antioch, CaliforniaPopulation 110,542. Forecast3 kmSW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast543 kmNW

After

1. 1.516 km SE of Livermore, CaliforniaFri, Nov 13, 6:09 AM PST · 16384 days ago · 9 km deep · 50 km away
2. 1.99 km ESE of Lexington Hills, CaliforniaMon, Nov 16, 4:27 AM PST · 16381 days ago · 11 km deep · 96 km away
3. 1.83 km SE of Pacifica, CaliforniaTue, Nov 17, 2:57 AM PST · 16380 days ago · 9 km deep · 70 km away
4. 2.14 km NW of Mountain House, CaliforniaTue, Nov 17, 5:52 PM PST · 16380 days ago · 13 km deep · 29 km away
5. 2.07 km N of Pittsburg, CaliforniaWed, Nov 18, 7:32 AM PST · 16379 days ago · 18 km deep · 12 km away
6. 1.63 km SW of Loyola, CaliforniaFri, Nov 20, 4:27 AM PST · 16377 days ago · 6 km deep · 77 km away
7. 1.95 km WSW of Kenwood, CaliforniaFri, Nov 20, 9:33 AM PST · 16377 days ago · 9 km deep · 80 km away
8. 1.9Northern CaliforniaFri, Nov 20, 6:35 PM PST · 16377 days ago · 16 km deep · 16 km away
9. 1.511 km SW of Brentwood, CaliforniaSat, Nov 21, 8:53 PM PST · 16375 days ago · 13 km deep · 15 km away
10. 1.85 km N of San Leandro, CaliforniaSun, Nov 22, 1:22 AM PST · 16375 days ago · 11 km deep · 37 km away
11. 1.67 km NE of East Foothills, CaliforniaTue, Nov 24, 11:15 AM PST · 16373 days ago · 10 km deep · 62 km away
12. 1.77 km E of East Foothills, CaliforniaSat, Nov 28, 4:45 AM PST · 16369 days ago · 9 km deep · 68 km away
13. 2.39 km ESE of East Foothills, CaliforniaSat, Nov 28, 10:11 PM PST · 16368 days ago · 7 km deep · 71 km away
14. 1.89 km ESE of East Foothills, CaliforniaSat, Nov 28, 10:27 PM PST · 16368 days ago · 7 km deep · 70 km away
15. 1.69 km NE of San Martin, CaliforniaMon, Nov 30, 9:10 AM PST · 16367 days ago · 8 km deep · 96 km away
16. 1.65 km NW of Moskowite Corner, CaliforniaMon, Nov 30, 9:32 AM PST · 16367 days ago · 11 km deep · 65 km away
17. 1.59 km NE of Morgan Hill, CaliforniaMon, Nov 30, 7:27 PM PST · 16367 days ago · 5 km deep · 91 km away
18. 1.93 km WNW of American Canyon, CaliforniaTue, Dec 1, 4:02 PM PST · 16366 days ago · 6 km deep · 46 km away
19. 2.213 km NW of Moskowite Corner, CaliforniaSat, Dec 5, 7:25 PM PST · 16362 days ago · 9 km deep · 74 km away
20. 2.07 km S of Calistoga, CaliforniaSun, Dec 6, 10:02 AM PST · 16361 days ago · 7 km deep · 87 km away
21. 2.38 km NE of San Martin, CaliforniaSun, Dec 6, 10:31 PM PST · 16360 days ago · 8 km deep · 99 km away
22. 1.716 km E of East Foothills, CaliforniaTue, Dec 8, 12:13 AM PST · 16359 days ago · 6 km deep · 69 km away
23. 1.88 km ESE of Tracy, CaliforniaTue, Dec 8, 8:43 AM PST · 16359 days ago · 78 km deep · 54 km away
24. 1.71 km SSE of North Gate, CaliforniaWed, Dec 9, 8:14 AM PST · 16358 days ago · 10 km deep · 17 km away
25. 2.3Northern CaliforniaWed, Dec 9, 7:10 PM PST · 16358 days ago · 15 km deep · 96 km away
26. 2.3Northern CaliforniaWed, Dec 9, 7:13 PM PST · 16358 days ago · 16 km deep · 95 km away
27. 1.7Northern CaliforniaThu, Dec 10, 1:03 AM PST · 16357 days ago · 10 km deep · 18 km away
28. 1.79 km NE of San Martin, CaliforniaThu, Dec 10, 10:57 PM PST · 16356 days ago · 5 km deep · 95 km away
29. 3.72 km WNW of Portola Valley, CaliforniaSat, Dec 12, 7:11 AM PST · 16355 days ago · 8 km deep · 76 km away
30. 2.82 km WNW of Portola Valley, CaliforniaSat, Dec 12, 7:54 AM PST · 16355 days ago · 7 km deep · 76 km away
31. 2.02 km WNW of Portola Valley, CaliforniaSat, Dec 12, 1:22 PM PST · 16355 days ago · 7 km deep · 76 km away
32. 2.45 km E of Penngrove, CaliforniaSun, Dec 13, 3:32 AM PST · 16354 days ago · 8 km deep · 76 km away
33. 2.22 km ENE of Knightsen, CaliforniaTue, Dec 15, 12:58 AM PST · 16352 days ago · 14 km deep · 17 km away
34. 1.88 km ENE of Morgan Hill, CaliforniaWed, Dec 16, 11:11 AM PST · 16351 days ago · 4 km deep · 95 km away
35. 2.516 km E of East Foothills, CaliforniaThu, Dec 17, 8:51 AM PST · 16350 days ago · 6 km deep · 70 km away
36. 3.14 km E of Penngrove, CaliforniaFri, Dec 18, 6:41 AM PST · 16349 days ago · 8 km deep · 77 km away
37. 2.15 km E of Penngrove, CaliforniaFri, Dec 18, 9:30 AM PST · 16349 days ago · 6 km deep · 76 km away
38. 1.55 km ESE of Roseland, CaliforniaSat, Dec 19, 10:42 AM PST · 16348 days ago · 10 km deep · 86 km away
39. 1.72 km WNW of Portola Valley, CaliforniaSat, Dec 19, 1:24 PM PST · 16348 days ago · 7 km deep · 76 km away
40. 2.64 km E of Penngrove, CaliforniaSat, Dec 19, 11:40 PM PST · 16347 days ago · 4 km deep · 77 km away
41. 3.04 km E of Penngrove, CaliforniaSat, Dec 19, 11:41 PM PST · 16347 days ago · 9 km deep · 77 km away
42. 2.44 km E of Penngrove, CaliforniaSat, Dec 19, 11:43 PM PST · 16347 days ago · 5 km deep · 77 km away
43. 3.14 km E of Penngrove, CaliforniaSun, Dec 20, 2:25 AM PST · 16347 days ago · 8 km deep · 77 km away
44. 3.25 km E of Penngrove, CaliforniaSun, Dec 20, 7:29 AM PST · 16347 days ago · 7 km deep · 76 km away
45. 1.65 km E of Penngrove, CaliforniaSun, Dec 20, 10:16 AM PST · 16347 days ago · 2 km deep · 76 km away
46. 2.54 km ESE of Penngrove, CaliforniaSun, Dec 20, 3:33 PM PST · 16347 days ago · 0 km deep · 77 km away
47. 1.94 km E of Penngrove, CaliforniaSun, Dec 20, 3:59 PM PST · 16347 days ago · 0 km deep · 77 km away
48. 1.94 km E of Penngrove, CaliforniaSun, Dec 20, 6:55 PM PST · 16347 days ago · 0 km deep · 77 km away
49. 1.85 km E of Penngrove, CaliforniaMon, Dec 21, 12:08 AM PST · 16346 days ago · 1 km deep · 77 km away
50. 1.68 km ESE of East Foothills, CaliforniaMon, Dec 21, 8:55 AM PST · 16346 days ago · 6 km deep · 70 km away
51. 1.64 km E of Penngrove, CaliforniaWed, Dec 23, 11:49 PM PST · 16343 days ago · 0 km deep · 77 km away
52. 1.65 km E of Penngrove, CaliforniaThu, Dec 24, 12:49 AM PST · 16343 days ago · 2 km deep · 76 km away
53. 1.59 km SW of Calistoga, CaliforniaThu, Dec 24, 3:34 AM PST · 16343 days ago · 4 km deep · 92 km away
54. 2.82 km ENE of Pacifica, CaliforniaFri, Dec 25, 9:56 AM PST · 16342 days ago · 12 km deep · 68 km away
55. 1.74 km E of Penngrove, CaliforniaSun, Dec 27, 1:45 PM PST · 16340 days ago · 2 km deep · 76 km away
56. 1.64 km E of Penngrove, CaliforniaSun, Dec 27, 3:43 PM PST · 16340 days ago · 0 km deep · 77 km away
57. 1.83 km WSW of Moskowite Corner, CaliforniaMon, Dec 28, 4:40 AM PST · 16339 days ago · 12 km deep · 61 km away
58. 2.17 km NNW of Pittsburg, CaliforniaFri, Jan 1, 6:29 AM PST · 16335 days ago · 19 km deep · 14 km away
59. 2.38 km ENE of Patterson, CaliforniaSat, Jan 2, 5:56 AM PST · 16334 days ago · 10 km deep · 88 km away
60. 2.012 km SW of Byron, CaliforniaSat, Jan 2, 6:05 PM PST · 16334 days ago · 15 km deep · 22 km away

The first 60 of 74.

Before

1. 2.33 km SW of Antioch, CaliforniaWed, Nov 11, 10:57 AM PST · 16386 days ago · 18 km deep · 0 km away
2. 2.09 km NE of San Martin, CaliforniaTue, Nov 10, 6:08 AM PST · 16387 days ago · 8 km deep · 98 km away
3. 2.27 km E of East Foothills, CaliforniaFri, Nov 6, 10:25 AM PST · 16391 days ago · 7 km deep · 67 km away
4. 2.28 km ENE of Milpitas, CaliforniaWed, Nov 4, 6:56 AM PST · 16393 days ago · 7 km deep · 58 km away
5. 1.73 km S of Green Valley, CaliforniaMon, Nov 2, 4:43 PM PST · 16395 days ago · 9 km deep · 39 km away
6. 2.33 km S of Fairview, CaliforniaMon, Nov 2, 7:43 AM PST · 16395 days ago · 4 km deep · 42 km away
7. 3.11 km ENE of Pittsburg, CaliforniaMon, Nov 2, 7:03 AM PST · 16395 days ago · 15 km deep · 6 km away
8. 1.93 km S of Fairview, CaliforniaSun, Nov 1, 6:38 AM PST · 16396 days ago · 4 km deep · 42 km away
9. 2.020 km ESE of East Foothills, CaliforniaSat, Oct 31, 10:05 AM PST · 16397 days ago · 6 km deep · 76 km away
10. 2.518 km N of Moskowite Corner, CaliforniaThu, Oct 29, 10:13 AM PST · 16399 days ago · 8 km deep · 77 km away
11. 2.417 km N of Moskowite Corner, CaliforniaThu, Oct 29, 9:55 AM PST · 16399 days ago · 9 km deep · 76 km away
12. 1.62 km SE of Ladera, CaliforniaWed, Oct 28, 10:33 PM PST · 16399 days ago · 2 km deep · 73 km away
13. 2.02 km E of Ladera, CaliforniaWed, Oct 28, 6:30 PM PST · 16400 days ago · 4 km deep · 72 km away
14. 1.818 km N of Moskowite Corner, CaliforniaWed, Oct 28, 5:32 PM PST · 16400 days ago · 8 km deep · 76 km away
15. 1.85 km WNW of Broadmoor, CaliforniaTue, Oct 27, 4:31 PM PST · 16401 days ago · 7 km deep · 69 km away
16. 2.38 km ESE of East Foothills, CaliforniaMon, Oct 26, 10:11 PM PST · 16401 days ago · 8 km deep · 70 km away
17. 2.211 km ENE of Blackhawk, CaliforniaMon, Oct 26, 7:34 PM PST · 16402 days ago · 16 km deep · 16 km away
18. 2.87 km S of Sunol, CaliforniaSun, Oct 25, 3:55 PM PST · 16403 days ago · 9 km deep · 51 km away
19. 1.712 km SE of Livermore, CaliforniaSun, Oct 25, 7:56 AM PST · 16403 days ago · 6 km deep · 46 km away
20. 2.32 km S of Fairview, CaliforniaSun, Oct 25, 4:27 AM PST · 16403 days ago · 6 km deep · 41 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1069389. Read Tue, Sep 22, 2026, 3:35 PM UTC.