M2.1 earthquake 2km W of Westminster, CA

Magnitude

2.1 (ml), micro

Local time

Wed, Dec 16, 1981, 6:33 AM PST

UTC

1981-12-16 14:33:45 UTC

Depth

12.7 km (7.9 mi), shallow

Epicenter

33.763° N, 118.032° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.6 km horizontally, 1.1 km in depth

Magnitude uncertainty

±0.08

Depth from

From location

Station coverage gap

91°

Stations used

27

• Westminster, CaliforniaPopulation 92,114. Forecast2 kmW
• Garden Grove, CaliforniaPopulation 175,393. Forecast9 kmW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast38 kmSSE

After

1. 2.27km SSW of Calimesa, CAThu, Dec 17, 2:29 AM PST · 16350 days ago · 15 km deep · 90 km away
2. 1.520km N of Santa Barbara Is., CAThu, Dec 17, 1:16 PM PST · 16350 days ago · 16 km deep · 94 km away
3. 2.218km NNE of Santa Barbara Is., CAFri, Dec 18, 6:28 PM PST · 16348 days ago · 0 km deep · 91 km away
4. 2.54km N of Fontana, CAFri, Dec 18, 8:08 PM PST · 16348 days ago · 7 km deep · 67 km away
5. 1.83km NE of Laguna Niguel, CASat, Dec 19, 11:54 AM PST · 16348 days ago · 7 km deep · 40 km away
6. 1.68km SW of Beaumont, CASun, Dec 20, 1:32 PM PST · 16347 days ago · 14 km deep · 92 km away
7. 2.06km NE of Lake View Terrace, CATue, Dec 22, 3:36 PM PST · 16344 days ago · 8 km deep · 67 km away
8. 1.511km NNE of Santa Clarita, CATue, Dec 22, 11:06 PM PST · 16344 days ago · 15 km deep · 91 km away
9. 1.63km WNW of Wrightwood, CAThu, Dec 24, 11:13 PM PST · 16342 days ago · 9 km deep · 75 km away
10. 1.91km ENE of Loma Linda, CASat, Dec 26, 7:30 AM PST · 16341 days ago · 15 km deep · 79 km away
11. 3.012km W of Lytle Creek, CASun, Dec 27, 12:24 PM PST · 16340 days ago · 6 km deep · 66 km away
12. 1.929km SSW of Dana Point, CASun, Dec 27, 8:19 PM PST · 16339 days ago · 6 km deep · 62 km away
13. 1.830km SSW of Dana Point, CAMon, Dec 28, 4:38 AM PST · 16339 days ago · 6 km deep · 63 km away
14. 2.331km SSW of Dana Point, CAMon, Dec 28, 8:59 AM PST · 16339 days ago · 6 km deep · 64 km away
15. 2.43km NE of Yucaipa, CATue, Dec 29, 6:38 AM PST · 16338 days ago · 10 km deep · 98 km away
16. 2.83km NE of Yucaipa, CATue, Dec 29, 10:04 AM PST · 16338 days ago · 12 km deep · 98 km away
17. 2.68km WSW of Hermosa Beach, CAWed, Dec 30, 1:43 AM PST · 16337 days ago · 4 km deep · 42 km away
18. 2.73km SW of Castaic, CAThu, Dec 31, 12:38 AM PST · 16336 days ago · 3 km deep · 96 km away
19. 2.717km NNW of Santa Barbara Is., CASat, Jan 2, 3:17 AM PST · 16334 days ago · 6 km deep · 100 km away
20. 2.64km NE of Buena Park, CASat, Jan 2, 4:37 PM PST · 16333 days ago · 4 km deep · 16 km away
21. 1.810km ENE of Santa Clarita, CASun, Jan 3, 3:04 PM PST · 16333 days ago · 7 km deep · 83 km away
22. 2.044km WSW of Carlsbad, CASun, Jan 3, 5:52 PM PST · 16332 days ago · 5 km deep · 91 km away
23. 2.03km SSE of Downey, CASun, Jan 3, 10:09 PM PST · 16332 days ago · 12 km deep · 19 km away
24. 1.64km SSE of Loma Linda, CAMon, Jan 4, 1:39 AM PST · 16332 days ago · 16 km deep · 78 km away
25. 2.02km N of Devore, CATue, Jan 5, 3:44 AM PST · 16331 days ago · 5 km deep · 78 km away
26. 2.328km SSE of Malibu, CAWed, Jan 6, 3:17 AM PST · 16330 days ago · 6 km deep · 63 km away
27. 2.03km NE of Colton, CAWed, Jan 6, 2:40 PM PST · 16330 days ago · 8 km deep · 78 km away
28. 2.03km NE of Colton, CAThu, Jan 7, 6:51 AM PST · 16329 days ago · 10 km deep · 77 km away
29. 2.12km ESE of Inglewood, CAThu, Jan 7, 9:34 AM PST · 16329 days ago · 6 km deep · 34 km away
30. 2.42km E of Inglewood, CAThu, Jan 7, 9:36 AM PST · 16329 days ago · 6 km deep · 35 km away
31. 2.522km WSW of Manhattan Beach, CASat, Jan 9, 7:58 PM PST · 16326 days ago · 3 km deep · 55 km away
32. 2.722km WSW of Manhattan Beach, CASat, Jan 9, 8:40 PM PST · 16326 days ago · 6 km deep · 55 km away
33. 2.243km WSW of Carlsbad, CASun, Jan 10, 12:18 AM PST · 16326 days ago · 6 km deep · 90 km away
34. 2.148km ENE of San Clemente Is. (SE tip), CASun, Jan 10, 3:37 AM PST · 16326 days ago · 6 km deep · 91 km away
35. 2.419km W of Manhattan Beach, CASun, Jan 10, 1:15 PM PST · 16326 days ago · 6 km deep · 54 km away
36. 2.36km SE of Ontario, CASun, Jan 10, 1:20 PM PST · 16326 days ago · 8 km deep · 50 km away
37. 2.521km WSW of Manhattan Beach, CAMon, Jan 11, 6:48 AM PST · 16325 days ago · 6 km deep · 55 km away
38. 2.522km N of Santa Barbara Is., CAMon, Jan 11, 3:18 PM PST · 16325 days ago · 6 km deep · 97 km away
39. 2.12km SSE of Charter Oak, CATue, Jan 12, 10:36 AM PST · 16324 days ago · 15 km deep · 40 km away
40. 1.53km ESE of Calimesa, CATue, Jan 12, 10:03 PM PST · 16323 days ago · 13 km deep · 96 km away
41. 1.82km NE of Yucaipa, CATue, Jan 12, 11:36 PM PST · 16323 days ago · 6 km deep · 98 km away
42. 2.948km WSW of Carlsbad, CAThu, Jan 14, 11:44 PM PST · 16321 days ago · 6 km deep · 91 km away
43. 2.26km SSW of Redlands, CASat, Jan 16, 1:48 AM PST · 16320 days ago · 16 km deep · 81 km away
44. 2.13km SSE of Malibu, CASun, Jan 17, 4:09 AM PST · 16319 days ago · 13 km deep · 75 km away
45. 2.344km WSW of Carlsbad, CAMon, Jan 18, 8:12 AM PST · 16318 days ago · 5 km deep · 94 km away
46. 2.011km ESE of Piru, CAMon, Jan 18, 11:26 AM PST · 16318 days ago · 18 km deep · 90 km away
47. 2.621km N of Santa Barbara Is., CAMon, Jan 18, 4:41 PM PST · 16317 days ago · 6 km deep · 100 km away
48. 2.57km SW of Marina del Rey, CAMon, Jan 18, 9:35 PM PST · 16317 days ago · 6 km deep · 47 km away
49. 1.61km ENE of San Bernardino, CATue, Jan 19, 4:35 AM PST · 16317 days ago · 2 km deep · 81 km away
50. 2.23km NE of Panorama City, CATue, Jan 19, 11:29 PM PST · 16316 days ago · 8 km deep · 64 km away
51. 1.65km NNE of San Bernardino, CAWed, Jan 20, 11:16 PM PST · 16315 days ago · 2 km deep · 84 km away
52. 1.82km WSW of Loma Linda, CAThu, Jan 21, 5:55 PM PST · 16314 days ago · 18 km deep · 76 km away
53. 2.32km SSE of Los Angeles, CASat, Jan 23, 4:19 AM PST · 16313 days ago · 4 km deep · 36 km away
54. 1.93km NNE of Lytle Creek, CASat, Jan 23, 9:20 AM PST · 16313 days ago · 12 km deep · 77 km away
55. 2.49km W of Manhattan Beach, CASat, Jan 23, 5:09 PM PST · 16312 days ago · 6 km deep · 46 km away
56. 2.11km NNE of Buena Park, CASun, Jan 24, 10:45 AM PST · 16312 days ago · 5 km deep · 13 km away
57. 2.28km SE of Santa Clarita, CASun, Jan 24, 6:11 PM PST · 16311 days ago · 5 km deep · 77 km away
58. 2.223km SW of Newport Beach, CAMon, Jan 25, 9:02 PM PST · 16310 days ago · 6 km deep · 33 km away
59. 2.35km NNW of Mentone, CATue, Jan 26, 10:35 AM PST · 16310 days ago · 11 km deep · 89 km away
60. 2.18km SSW of Malibu Beach, CAWed, Jan 27, 1:12 AM PST · 16309 days ago · 13 km deep · 67 km away

The first 60 of 95.

Before

1. 2.314km S of Malibu Beach, CATue, Dec 15, 1:30 PM PST · 16352 days ago · 13 km deep · 64 km away
2. 1.722km N of Santa Barbara Is., CATue, Dec 15, 3:04 AM PST · 16352 days ago · 6 km deep · 93 km away
3. 2.432km SSW of Dana Point, CASun, Dec 13, 4:58 PM PST · 16353 days ago · 6 km deep · 62 km away
4. 1.51km N of Loma Linda, CASun, Dec 13, 1:45 PM PST · 16354 days ago · 14 km deep · 78 km away
5. 2.39km SW of Rancho Palos Verdes, CAFri, Dec 11, 11:06 PM PST · 16355 days ago · 4 km deep · 41 km away
6. 2.724km N of Santa Barbara Is., CAFri, Dec 11, 10:42 AM PST · 16356 days ago · 10 km deep · 100 km away
7. 2.014km NW of San Clemente Is. (NW tip), CAFri, Dec 11, 7:17 AM PST · 16356 days ago · 6 km deep · 93 km away
8. 1.519km N of Santa Barbara Is., CAWed, Dec 9, 2:06 AM PST · 16358 days ago · 6 km deep · 95 km away
9. 1.516km S of Camarillo, CATue, Dec 8, 8:16 AM PST · 16359 days ago · 12 km deep · 97 km away
10. 2.020km N of Santa Barbara Is., CATue, Dec 8, 6:17 AM PST · 16359 days ago · 8 km deep · 94 km away
11. 1.87km ENE of Santa Clarita, CAMon, Dec 7, 12:30 PM PST · 16360 days ago · 11 km deep · 84 km away
12. 2.52km SE of San Dimas, CASat, Dec 5, 12:52 PM PST · 16362 days ago · 12 km deep · 43 km away
13. 2.02km SSE of San Dimas, CASat, Dec 5, 12:49 PM PST · 16362 days ago · 13 km deep · 42 km away
14. 1.621km N of Santa Barbara Is., CAFri, Dec 4, 7:34 PM PST · 16362 days ago · 6 km deep · 99 km away
15. 2.016km NNE of Santa Barbara Is., CAFri, Dec 4, 1:37 AM PST · 16363 days ago · 6 km deep · 92 km away
16. 1.729km N of Santa Barbara Is., CATue, Dec 1, 10:05 AM PST · 16366 days ago · 6 km deep · 99 km away
17. 1.61km SSW of Paramount, CAMon, Nov 30, 7:34 AM PST · 16367 days ago · 5 km deep · 18 km away
18. 2.02km NNE of Loma Linda, CASun, Nov 29, 9:25 AM PST · 16368 days ago · 13 km deep · 79 km away
19. 1.72km NNE of Loma Linda, CASun, Nov 29, 7:14 AM PST · 16368 days ago · 14 km deep · 79 km away
20. 2.54km SSE of Mentone, CAFri, Nov 27, 6:48 PM PST · 16369 days ago · 4 km deep · 89 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci103400 (also filed as usp0001hf0). Read Tue, Sep 22, 2026, 11:00 AM UTC.