M1.8 earthquake 12km N of Castaic, CA

Magnitude

1.8 (Mc), micro

Magnitude from

Southern California Seismic Network

Local time

Wed, Nov 21, 1990, 1:41 AM PST

UTC

1990-11-21 09:41:45 UTC

Depth

6.2 km (3.8 mi), shallow

Epicenter

34.596° N, 118.638° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Depth from

From location

Station coverage gap

133°

Stations used

0

• Castaic, CaliforniaPopulation 19,015. Forecast12 kmN
• Valencia, CaliforniaPopulation 148,456. Forecast17 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast70 kmNNW

After

1. 1.87km WSW of Wrightwood, CAWed, Nov 21, 10:48 AM PST · 13101 days ago · 6 km deep · 91 km away
2. 1.84km SSW of Valencia, CAWed, Nov 21, 12:27 PM PST · 13101 days ago · 5 km deep · 19 km away
3. 2.022km NNW of Tehachapi, CAWed, Nov 21, 4:16 PM PST · 13101 days ago · 4 km deep · 81 km away
4. 1.914km S of Las Flores, CAWed, Nov 21, 5:51 PM PST · 13101 days ago · 13 km deep · 76 km away
5. 1.56km SW of Pearblossum, CAThu, Nov 22, 7:33 AM PST · 13101 days ago · 7 km deep · 64 km away
6. 1.75km S of Highland Park, CAFri, Nov 23, 12:18 PM PST · 13099 days ago · 9 km deep · 71 km away
7. 1.68km N of La Verne, CAFri, Nov 23, 7:31 PM PST · 13099 days ago · 5 km deep · 94 km away
8. 2.57km NW of Ventura, CASat, Nov 24, 5:54 AM PST · 13099 days ago · 0 km deep · 66 km away
9. 2.52km E of Redondo Beach, CASun, Nov 25, 3:24 AM PST · 13098 days ago · 7 km deep · 86 km away
10. 1.98km WSW of Wrightwood, CASun, Nov 25, 8:31 AM PST · 13098 days ago · 6 km deep · 90 km away
11. 2.64km SSE of Los Angeles, CASun, Nov 25, 10:58 PM PST · 13097 days ago · 8 km deep · 74 km away
12. 1.810km SSW of Ojai, CATue, Nov 27, 7:26 AM PST · 13096 days ago · 8 km deep · 66 km away
13. 2.27km SW of Ojai, CATue, Nov 27, 9:28 AM PST · 13095 days ago · 3 km deep · 64 km away
14. 1.511km SW of Ojai, CATue, Nov 27, 1:32 PM PST · 13095 days ago · 8 km deep · 68 km away
15. 1.98km SW of Ojai, CATue, Nov 27, 10:54 PM PST · 13095 days ago · 3 km deep · 65 km away
16. 2.023km NE of Arvin, CAWed, Nov 28, 7:58 AM PST · 13095 days ago · 4 km deep · 83 km away
17. 1.620km WSW of Tehachapi, CAThu, Nov 29, 11:50 AM PST · 13093 days ago · 4 km deep · 53 km away
18. 1.79km W of Tehachapi, CASun, Dec 2, 1:34 PM PST · 13090 days ago · 5 km deep · 60 km away
19. 2.42km WNW of Canoga Park, CATue, Dec 4, 4:25 AM PST · 13089 days ago · 14 km deep · 44 km away
20. 2.710km SW of Carpinteria, CATue, Dec 4, 8:16 PM PST · 13088 days ago · 2 km deep · 92 km away
21. 2.08km WSW of Wrightwood, CAWed, Dec 5, 9:36 AM PST · 13087 days ago · 5 km deep · 90 km away
22. 2.017km WNW of Grapevine, CAWed, Dec 5, 1:31 PM PST · 13087 days ago · 13 km deep · 62 km away
23. 1.74km N of Bakersfield, CAThu, Dec 6, 2:50 AM PST · 13087 days ago · 5 km deep · 96 km away
24. 2.012km S of Las Flores, CASun, Dec 9, 12:24 AM PST · 13084 days ago · 12 km deep · 74 km away
25. 1.66km W of Carpinteria, CAMon, Dec 10, 5:35 AM PST · 13083 days ago · 15 km deep · 89 km away
26. 2.223km NE of Arvin, CAMon, Dec 10, 2:41 PM PST · 13082 days ago · 4 km deep · 86 km away
27. 2.319km NW of Tehachapi, CATue, Dec 11, 2:55 AM PST · 13082 days ago · 5 km deep · 75 km away
28. 2.719km NW of Tehachapi, CATue, Dec 11, 7:33 AM PST · 13082 days ago · 4 km deep · 75 km away
29. 1.620km NW of Tehachapi, CATue, Dec 11, 11:40 AM PST · 13081 days ago · 6 km deep · 75 km away
30. 1.814km WNW of Malibu, CATue, Dec 11, 10:20 PM PST · 13081 days ago · 6 km deep · 66 km away
31. 1.715km SSW of Tehachapi, CATue, Dec 11, 10:27 PM PST · 13081 days ago · 8 km deep · 47 km away
32. 1.87km WSW of Grapevine, CAWed, Dec 12, 6:35 AM PST · 13081 days ago · 17 km deep · 48 km away
33. 1.713km SE of Malibu, CAThu, Dec 13, 1:40 AM PST · 13080 days ago · 15 km deep · 77 km away
34. 1.84km NNE of Claremont, CAThu, Dec 13, 6:06 PM PST · 13079 days ago · 5 km deep · 100 km away
35. 2.418km S of Port Hueneme, CAFri, Dec 14, 2:39 PM PST · 13078 days ago · 1 km deep · 86 km away
36. 1.723km NNW of Tehachapi, CAFri, Dec 14, 3:44 PM PST · 13078 days ago · 6 km deep · 82 km away
37. 1.65km N of Claremont, CAFri, Dec 14, 8:36 PM PST · 13078 days ago · 7 km deep · 99 km away
38. 2.45km S of Malibu, CASat, Dec 15, 11:27 AM PST · 13077 days ago · 12 km deep · 73 km away
39. 1.614km NNW of Pine Mountain Club, CASat, Dec 15, 7:29 PM PST · 13077 days ago · 13 km deep · 66 km away
40. 2.23km ENE of La Verne, CASun, Dec 16, 9:17 AM PST · 13076 days ago · 4 km deep · 98 km away
41. 3.03km NE of La Verne, CASun, Dec 16, 10:06 AM PST · 13076 days ago · 3 km deep · 98 km away
42. 2.119km SE of Bodfish, CASun, Dec 16, 2:02 PM PST · 13076 days ago · 8 km deep · 99 km away
43. 1.622km NW of Tehachapi, CAMon, Dec 17, 4:41 AM PST · 13076 days ago · 6 km deep · 78 km away
44. 2.317km SE of Arvin, CATue, Dec 18, 2:39 AM PST · 13075 days ago · 10 km deep · 56 km away
45. 1.718km SE of Arvin, CATue, Dec 18, 6:38 AM PST · 13075 days ago · 10 km deep · 56 km away
46. 4.314km NNE of Lamont, CATue, Dec 18, 8:56 AM PST · 13074 days ago · 5 km deep · 89 km away
47. 1.614km NNE of Lamont, CATue, Dec 18, 9:49 AM PST · 13074 days ago · 5 km deep · 89 km away
48. 1.514km NNE of Lamont, CATue, Dec 18, 7:16 PM PST · 13074 days ago · 5 km deep · 88 km away
49. 2.423km ENE of Arvin, CATue, Dec 18, 7:21 PM PST · 13074 days ago · 5 km deep · 79 km away
50. 2.514km NNE of Lamont, CAWed, Dec 19, 12:19 AM PST · 13074 days ago · 5 km deep · 89 km away
51. 1.88km W of Pine Mountain Club, CAWed, Dec 19, 2:33 AM PST · 13074 days ago · 11 km deep · 62 km away
52. 1.71km WNW of View Park-Windsor Hills, CAWed, Dec 19, 9:00 AM PST · 13073 days ago · 7 km deep · 71 km away
53. 2.14km N of Claremont, CAThu, Dec 20, 5:44 AM PST · 13073 days ago · 7 km deep · 99 km away
54. 2.03km NNW of Brea, CAThu, Dec 20, 11:32 PM PST · 13072 days ago · 5 km deep · 99 km away
55. 2.525km N of Tehachapi, CAFri, Dec 21, 11:04 AM PST · 13071 days ago · 6 km deep · 85 km away
56. 1.74km NNW of Claremont, CAFri, Dec 21, 1:52 PM PST · 13071 days ago · 8 km deep · 98 km away
57. 1.622km NW of Tehachapi, CASat, Dec 22, 2:24 AM PST · 13071 days ago · 6 km deep · 77 km away
58. 2.325km N of Tehachapi, CASat, Dec 22, 8:48 PM PST · 13070 days ago · 5 km deep · 85 km away
59. 2.112km S of Malibu Beach, CASun, Dec 23, 6:26 AM PST · 13070 days ago · 12 km deep · 75 km away
60. 1.915km NE of Lebec, CASun, Dec 23, 4:26 PM PST · 13069 days ago · 5 km deep · 39 km away

The first 60 of 103.

Before

1. 1.512km N of Castaic, CAWed, Nov 21, 12:27 AM PST · 13102 days ago · 6 km deep · 0 km away
2. 1.917km W of Malibu, CATue, Nov 20, 12:36 PM PST · 13102 days ago · 5 km deep · 72 km away
3. 1.86km N of Sunland, CAMon, Nov 19, 7:03 PM PST · 13103 days ago · 11 km deep · 44 km away
4. 1.71km SSW of Lennox, CAMon, Nov 19, 2:04 AM PST · 13104 days ago · 4 km deep · 79 km away
5. 2.023km NE of Arvin, CAMon, Nov 19, 1:18 AM PST · 13104 days ago · 5 km deep · 83 km away
6. 1.921km SSE of Arvin, CASat, Nov 17, 8:03 PM PST · 13105 days ago · 9 km deep · 51 km away
7. 2.410km S of Tehachapi, CASat, Nov 17, 12:44 PM PST · 13105 days ago · 8 km deep · 52 km away
8. 2.16km NE of Piru, CASat, Nov 17, 6:37 AM PST · 13106 days ago · 7 km deep · 19 km away
9. 2.110km W of Castaic, CASat, Nov 17, 6:35 AM PST · 13106 days ago · 6 km deep · 14 km away
10. 3.210km W of Castaic, CASat, Nov 17, 6:34 AM PST · 13106 days ago · 7 km deep · 13 km away
11. 2.810km W of Castaic, CASat, Nov 17, 5:22 AM PST · 13106 days ago · 7 km deep · 13 km away
12. 2.014km WSW of Lake Hughes, CAFri, Nov 16, 7:14 AM PST · 13107 days ago · 10 km deep · 6 km away
13. 1.518km SE of Arvin, CAThu, Nov 15, 2:20 AM PST · 13108 days ago · 12 km deep · 57 km away
14. 1.619km WNW of Grapevine, CAWed, Nov 14, 1:55 PM PST · 13108 days ago · 23 km deep · 65 km away
15. 1.98km NE of Castaic, CAWed, Nov 14, 6:12 AM PST · 13109 days ago · 17 km deep · 8 km away
16. 1.826km SSW of Bodfish, CAMon, Nov 12, 3:42 PM PST · 13110 days ago · 2 km deep · 86 km away
17. 1.811km ESE of Tehachapi, CAMon, Nov 12, 6:21 AM PST · 13111 days ago · 6 km deep · 61 km away
18. 2.58km NNE of Claremont, CASun, Nov 11, 9:14 PM PST · 13111 days ago · 11 km deep · 100 km away
19. 2.012km S of Las Flores, CASun, Nov 11, 9:19 AM PST · 13111 days ago · 12 km deep · 75 km away
20. 1.920km N of Mojave, CAThu, Nov 8, 5:46 PM PST · 13114 days ago · 3 km deep · 82 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci2007804. Read Mon, Oct 5, 2026, 4:15 AM UTC.