M2.3 earthquake 12km N of Foothill Ranch, CA

Magnitude

2.3 (ml), micro

Local time

Tue, Nov 17, 1981, 11:29 AM PST

UTC

1981-11-17 19:29:47 UTC

Depth

1.4 km (0.8 mi), shallow

Epicenter

33.793° N, 117.661° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.5 km horizontally, 0.7 km in depth

Magnitude uncertainty

±0.20

Depth from

From location

Station coverage gap

82°

Stations used

38

• Foothill Ranch, CaliforniaPopulation 11,698. Forecast12 kmN
• Corona, CaliforniaPopulation 164,226. Forecast13 kmSW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast61 kmESE

After

1. 1.511km SW of Anza, CATue, Nov 17, 12:04 PM PST · 16380 days ago · 3 km deep · 89 km away
2. 1.85km SE of Temecula, CATue, Nov 17, 10:54 PM PST · 16379 days ago · 7 km deep · 63 km away
3. 1.95km SE of Temecula, CAWed, Nov 18, 1:08 AM PST · 16379 days ago · 7 km deep · 63 km away
4. 1.66km SE of Temecula, CAThu, Nov 19, 10:31 AM PST · 16378 days ago · 8 km deep · 64 km away
5. 2.14km S of Loma Linda, CAThu, Nov 19, 9:37 PM PST · 16377 days ago · 11 km deep · 44 km away
6. 2.733km SSW of Dana Point, CAThu, Nov 19, 11:00 PM PST · 16377 days ago · 6 km deep · 68 km away
7. 1.831km SSW of Dana Point, CAThu, Nov 19, 11:19 PM PST · 16377 days ago · 6 km deep · 67 km away
8. 1.72km NNE of Loma Linda, CAFri, Nov 20, 11:59 AM PST · 16377 days ago · 14 km deep · 48 km away
9. 1.68km ESE of Santa Clarita, CAFri, Nov 20, 12:48 PM PST · 16377 days ago · 8 km deep · 97 km away
10. 2.37km NNE of Rancho Cucamonga, CASat, Nov 21, 12:38 AM PST · 16376 days ago · 5 km deep · 44 km away
11. 2.57km SSE of Banning, CASat, Nov 21, 9:48 AM PST · 16376 days ago · 12 km deep · 74 km away
12. 1.810km SW of Anza, CASun, Nov 22, 5:56 PM PST · 16375 days ago · 8 km deep · 90 km away
13. 1.813km SSE of Valle Vista, CAMon, Nov 23, 12:27 AM PST · 16374 days ago · 15 km deep · 79 km away
14. 1.615km SE of Malibu, CAMon, Nov 23, 4:40 AM PST · 16374 days ago · 6 km deep · 98 km away
15. 2.111km N of Banning, CAMon, Nov 23, 2:42 PM PST · 16374 days ago · 10 km deep · 78 km away
16. 1.85km N of Banning, CATue, Nov 24, 8:54 AM PST · 16373 days ago · 16 km deep · 75 km away
17. 1.62km WNW of Costa Mesa, CATue, Nov 24, 8:22 PM PST · 16373 days ago · 5 km deep · 29 km away
18. 2.54km SSE of Mentone, CAFri, Nov 27, 6:48 PM PST · 16370 days ago · 4 km deep · 56 km away
19. 2.17km SE of Valle Vista, CASat, Nov 28, 9:54 PM PST · 16368 days ago · 13 km deep · 77 km away
20. 1.72km NNE of Loma Linda, CASun, Nov 29, 7:14 AM PST · 16368 days ago · 14 km deep · 48 km away
21. 2.02km NNE of Loma Linda, CASun, Nov 29, 9:25 AM PST · 16368 days ago · 13 km deep · 48 km away
22. 1.610km NE of Aguanga, CASun, Nov 29, 11:29 AM PST · 16368 days ago · 4 km deep · 88 km away
23. 2.05km SSE of Banning, CASun, Nov 29, 11:19 PM PST · 16367 days ago · 12 km deep · 75 km away
24. 1.810km NE of Aguanga, CAMon, Nov 30, 7:11 AM PST · 16367 days ago · 4 km deep · 88 km away
25. 1.61km SSW of Paramount, CAMon, Nov 30, 7:34 AM PST · 16367 days ago · 5 km deep · 48 km away
26. 1.611km S of Idyllwild, CASat, Dec 5, 5:01 AM PST · 16362 days ago · 10 km deep · 87 km away
27. 2.02km SSE of San Dimas, CASat, Dec 5, 12:49 PM PST · 16362 days ago · 13 km deep · 35 km away
28. 2.52km SE of San Dimas, CASat, Dec 5, 12:52 PM PST · 16362 days ago · 12 km deep · 35 km away
29. 1.810km ENE of Aguanga, CAThu, Dec 10, 8:53 AM PST · 16357 days ago · 3 km deep · 88 km away
30. 2.39km SW of Rancho Palos Verdes, CAFri, Dec 11, 11:06 PM PST · 16355 days ago · 4 km deep · 75 km away
31. 1.51km N of Loma Linda, CASun, Dec 13, 1:45 PM PST · 16354 days ago · 14 km deep · 47 km away
32. 2.432km SSW of Dana Point, CASun, Dec 13, 4:58 PM PST · 16354 days ago · 6 km deep · 67 km away
33. 1.910km N of Cabazon, CASun, Dec 13, 7:08 PM PST · 16354 days ago · 14 km deep · 85 km away
34. 2.314km S of Malibu Beach, CATue, Dec 15, 1:30 PM PST · 16352 days ago · 13 km deep · 97 km away
35. 2.12km W of Westminster, CAWed, Dec 16, 6:33 AM PST · 16351 days ago · 13 km deep · 34 km away
36. 2.27km SSW of Calimesa, CAThu, Dec 17, 2:29 AM PST · 16350 days ago · 15 km deep · 56 km away
37. 1.79km SE of Valle Vista, CAThu, Dec 17, 11:20 AM PST · 16350 days ago · 14 km deep · 79 km away
38. 2.54km N of Fontana, CAFri, Dec 18, 8:08 PM PST · 16349 days ago · 7 km deep · 42 km away
39. 1.83km NE of Laguna Niguel, CASat, Dec 19, 11:54 AM PST · 16348 days ago · 7 km deep · 28 km away
40. 1.611km NE of Aguanga, CASun, Dec 20, 10:12 AM PST · 16347 days ago · 2 km deep · 87 km away
41. 1.68km SW of Beaumont, CASun, Dec 20, 1:32 PM PST · 16347 days ago · 14 km deep · 58 km away
42. 1.610km ENE of Aguanga, CAMon, Dec 21, 2:29 AM PST · 16346 days ago · 3 km deep · 89 km away
43. 2.54km WSW of Morongo Valley, CATue, Dec 22, 12:32 PM PST · 16345 days ago · 8 km deep · 100 km away
44. 2.06km NE of Lake View Terrace, CATue, Dec 22, 3:36 PM PST · 16345 days ago · 8 km deep · 84 km away
45. 1.710km NE of Aguanga, CATue, Dec 22, 3:54 PM PST · 16345 days ago · 4 km deep · 88 km away
46. 2.210km N of Cabazon, CAWed, Dec 23, 6:21 PM PST · 16344 days ago · 16 km deep · 86 km away
47. 3.110km N of Cabazon, CAWed, Dec 23, 6:22 PM PST · 16344 days ago · 18 km deep · 85 km away
48. 1.63km WNW of Wrightwood, CAThu, Dec 24, 11:13 PM PST · 16342 days ago · 9 km deep · 64 km away
49. 1.91km ENE of Loma Linda, CASat, Dec 26, 7:30 AM PST · 16341 days ago · 15 km deep · 47 km away
50. 1.88km NW of Morongo Valley, CASun, Dec 27, 3:47 AM PST · 16340 days ago · 4 km deep · 99 km away
51. 3.012km W of Lytle Creek, CASun, Dec 27, 12:24 PM PST · 16340 days ago · 6 km deep · 51 km away
52. 1.929km SSW of Dana Point, CASun, Dec 27, 8:19 PM PST · 16340 days ago · 6 km deep · 64 km away
53. 1.830km SSW of Dana Point, CAMon, Dec 28, 4:38 AM PST · 16339 days ago · 6 km deep · 66 km away
54. 1.68km W of Lucerne Valley, CAMon, Dec 28, 6:26 AM PST · 16339 days ago · 1 km deep · 93 km away
55. 2.331km SSW of Dana Point, CAMon, Dec 28, 8:59 AM PST · 16339 days ago · 6 km deep · 67 km away
56. 2.43km NE of Yucaipa, CATue, Dec 29, 6:38 AM PST · 16338 days ago · 10 km deep · 65 km away
57. 2.83km NE of Yucaipa, CATue, Dec 29, 10:04 AM PST · 16338 days ago · 12 km deep · 65 km away
58. 2.68km WSW of Hermosa Beach, CAWed, Dec 30, 1:43 AM PST · 16337 days ago · 4 km deep · 76 km away
59. 1.64km SW of Cabazon, CAWed, Dec 30, 6:10 AM PST · 16337 days ago · 15 km deep · 78 km away
60. 2.53km S of Idyllwild, CAFri, Jan 1, 12:21 PM PST · 16335 days ago · 17 km deep · 87 km away

The first 60 of 98.

Before

1. 1.69km NE of Lake Arrowhead, CAMon, Nov 16, 10:42 AM PST · 16381 days ago · 3 km deep · 76 km away
2. 1.65km ESE of Temecula, CAMon, Nov 16, 7:06 AM PST · 16381 days ago · 6 km deep · 63 km away
3. 1.92km SSE of El Monte, CASat, Nov 14, 9:57 AM PST · 16383 days ago · 4 km deep · 44 km away
4. 1.546km WSW of Encinitas, CAFri, Nov 13, 1:34 PM PST · 16384 days ago · 5 km deep · 98 km away
5. 2.77km NNW of Fontana, CAThu, Nov 12, 3:20 AM PST · 16385 days ago · 6 km deep · 44 km away
6. 1.76km S of Lake Arrowhead, CATue, Nov 10, 8:49 PM PST · 16386 days ago · 1 km deep · 63 km away
7. 2.21km W of Irvine, CATue, Nov 10, 5:19 PM PST · 16387 days ago · 4 km deep · 18 km away
8. 2.02km NE of Irvine, CATue, Nov 10, 3:03 PM PST · 16387 days ago · 3 km deep · 15 km away
9. 1.84km WSW of Rossmoor, CATue, Nov 10, 5:37 AM PST · 16387 days ago · 5 km deep · 43 km away
10. 2.04km WSW of Hermosa Beach, CAMon, Nov 9, 9:08 PM PST · 16387 days ago · 10 km deep · 73 km away
11. 2.614km WNW of Camp Pendleton South, CASun, Nov 8, 4:47 PM PST · 16389 days ago · 6 km deep · 62 km away
12. 1.613km WNW of Camp Pendleton South, CASun, Nov 8, 3:32 PM PST · 16389 days ago · 10 km deep · 62 km away
13. 2.810km S of Avalon, CASun, Nov 8, 11:59 AM PST · 16389 days ago · 9 km deep · 85 km away
14. 1.813km WNW of Camp Pendleton South, CASun, Nov 8, 6:50 AM PST · 16389 days ago · 7 km deep · 62 km away
15. 1.712km N of Banning, CASat, Nov 7, 6:40 PM PST · 16390 days ago · 15 km deep · 79 km away
16. 1.512km WNW of Camp Pendleton South, CASat, Nov 7, 2:34 PM PST · 16390 days ago · 14 km deep · 61 km away
17. 1.613km WNW of Camp Pendleton South, CASat, Nov 7, 5:27 AM PST · 16390 days ago · 5 km deep · 61 km away
18. 1.813km WNW of Camp Pendleton South, CASat, Nov 7, 4:19 AM PST · 16390 days ago · 5 km deep · 61 km away
19. 2.814km WNW of Camp Pendleton South, CASat, Nov 7, 3:42 AM PST · 16390 days ago · 6 km deep · 61 km away
20. 1.512km WNW of Camp Pendleton South, CASat, Nov 7, 3:40 AM PST · 16390 days ago · 8 km deep · 61 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci527132. Read Tue, Sep 22, 2026, 3:56 PM UTC.