M1.7 earthquake 3km W of Orange, CA

Magnitude

1.7 (Mh), micro

Magnitude from

Southern California Seismic Network

Local time

Sat, Oct 29, 1983, 1:15 AM PDT

UTC

1983-10-29 08:15:08 UTC

Depth

4.6 km (2.9 mi), shallow

Epicenter

33.805° N, 117.865° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.9 km horizontally, 20.3 km in depth

Depth from

From location

Station coverage gap

220°, poorly surrounded by stations

Stations used

9

• Orange, CaliforniaPopulation 140,992. Forecast2 kmNNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast44 kmSE

After

1. 2.43km WNW of Orange, CASat, Oct 29, 7:14 AM PDT · 15680 days ago · 8 km deep · 2 km away
2. 1.94km SSW of Fontana, CASat, Oct 29, 8:19 AM PDT · 15680 days ago · 4 km deep · 46 km away
3. 1.86km NW of San Jacinto, CASun, Oct 30, 3:26 PM PST · 15679 days ago · 13 km deep · 80 km away
4. 1.74km SSE of Anaheim, CAMon, Oct 31, 7:31 AM PST · 15678 days ago · 5 km deep · 1 km away
5. 2.224km NNE of Avalon, CAMon, Oct 31, 8:25 AM PST · 15678 days ago · 5 km deep · 43 km away
6. 1.61km SE of Loma Linda, CATue, Nov 1, 4:35 AM PST · 15677 days ago · 17 km deep · 62 km away
7. 1.65km SSW of Calimesa, CAWed, Nov 2, 6:00 PM PST · 15675 days ago · 13 km deep · 74 km away
8. 1.64km SSW of Fontana, CAWed, Nov 2, 9:38 PM PST · 15675 days ago · 4 km deep · 46 km away
9. 1.94km SW of Fontana, CAWed, Nov 2, 10:27 PM PST · 15675 days ago · 5 km deep · 46 km away
10. 2.517km W of Camp Pendleton South, CAThu, Nov 3, 2:12 PM PST · 15675 days ago · 5 km deep · 71 km away
11. 1.74km NNW of San Jacinto, CAThu, Nov 3, 5:53 PM PST · 15674 days ago · 11 km deep · 83 km away
12. 1.82km SSW of San Bernardino, CAThu, Nov 3, 5:54 PM PST · 15674 days ago · 6 km deep · 62 km away
13. 2.911km NNE of Lake Arrowhead, CAFri, Nov 4, 1:02 AM PST · 15674 days ago · 1 km deep · 90 km away
14. 1.811km NNE of Lake Arrowhead, CAFri, Nov 4, 1:22 AM PST · 15674 days ago · 4 km deep · 90 km away
15. 1.512km NNE of Lake Arrowhead, CAFri, Nov 4, 2:38 AM PST · 15674 days ago · 7 km deep · 91 km away
16. 2.011km NNE of Lake Arrowhead, CAFri, Nov 4, 7:12 AM PST · 15674 days ago · 6 km deep · 90 km away
17. 1.79km SE of Valle Vista, CAFri, Nov 4, 9:38 AM PST · 15674 days ago · 16 km deep · 98 km away
18. 1.86km NE of Banning, CASat, Nov 5, 12:53 AM PST · 15673 days ago · 15 km deep · 97 km away
19. 2.15km S of Redlands, CASat, Nov 5, 9:37 PM PST · 15672 days ago · 5 km deep · 67 km away
20. 1.86km S of Redlands, CASat, Nov 5, 10:07 PM PST · 15672 days ago · 13 km deep · 66 km away
21. 1.75km S of Redlands, CASat, Nov 5, 10:08 PM PST · 15672 days ago · 4 km deep · 67 km away
22. 1.66km S of Redlands, CASun, Nov 6, 12:09 AM PST · 15672 days ago · 8 km deep · 67 km away
23. 1.82km SSE of Muscoy, CASun, Nov 6, 4:15 PM PST · 15672 days ago · 9 km deep · 61 km away
24. 1.71km SSE of Muscoy, CASun, Nov 6, 9:46 PM PST · 15671 days ago · 5 km deep · 61 km away
25. 1.52km NE of Colton, CAMon, Nov 7, 10:30 AM PST · 15671 days ago · 16 km deep · 61 km away
26. 2.512km NNE of Lake Arrowhead, CAMon, Nov 7, 5:39 PM PST · 15670 days ago · 3 km deep · 90 km away
27. 1.78km ENE of Nuevo, CAMon, Nov 7, 9:01 PM PST · 15670 days ago · 16 km deep · 75 km away
28. 2.64km ESE of Loma Linda, CATue, Nov 8, 7:59 PM PST · 15669 days ago · 8 km deep · 65 km away
29. 2.04km SE of Loma Linda, CAWed, Nov 9, 4:08 AM PST · 15669 days ago · 16 km deep · 63 km away
30. 1.97km NNE of Green Acres, CAWed, Nov 9, 8:30 AM PST · 15669 days ago · 6 km deep · 76 km away
31. 1.52km ENE of Muscoy, CAWed, Nov 9, 9:56 AM PST · 15669 days ago · 5 km deep · 63 km away
32. 2.04km ESE of Loma Linda, CAWed, Nov 9, 10:12 AM PST · 15669 days ago · 13 km deep · 64 km away
33. 1.64km SE of Loma Linda, CAWed, Nov 9, 10:12 AM PST · 15669 days ago · 12 km deep · 64 km away
34. 1.79km NNE of Pala, CAWed, Nov 9, 6:07 PM PST · 15668 days ago · 12 km deep · 85 km away
35. 2.44km SE of Yorba Linda, CAThu, Nov 10, 12:19 PM PST · 15668 days ago · 8 km deep · 10 km away
36. 2.22km ENE of Colton, CAThu, Nov 10, 12:41 PM PST · 15668 days ago · 14 km deep · 61 km away
37. 1.73km ENE of Loma Linda, CAFri, Nov 11, 3:40 AM PST · 15667 days ago · 4 km deep · 65 km away
38. 1.62km SSE of Muscoy, CAFri, Nov 11, 4:45 AM PST · 15667 days ago · 10 km deep · 61 km away
39. 2.22km NE of Laguna Niguel, CAFri, Nov 11, 8:13 PM PST · 15666 days ago · 6 km deep · 34 km away
40. 2.71km ENE of Laguna Niguel, CASat, Nov 12, 3:56 AM PST · 15666 days ago · 5 km deep · 35 km away
41. 1.93km NE of Loma Linda, CAMon, Nov 14, 1:30 PM PST · 15664 days ago · 4 km deep · 65 km away
42. 2.13km ENE of Loma Linda, CAMon, Nov 14, 2:32 PM PST · 15664 days ago · 5 km deep · 65 km away
43. 1.911km NNE of Lake Arrowhead, CAMon, Nov 14, 10:52 PM PST · 15663 days ago · 8 km deep · 89 km away
44. 1.74km W of Huntington Beach, CAWed, Nov 16, 12:02 AM PST · 15662 days ago · 5 km deep · 21 km away
45. 1.62km S of Devore, CAWed, Nov 16, 5:16 PM PST · 15661 days ago · 12 km deep · 62 km away
46. 1.82km NW of Highland, CAThu, Nov 17, 2:30 AM PST · 15661 days ago · 5 km deep · 70 km away
47. 1.92km NW of Highland, CAThu, Nov 17, 2:56 AM PST · 15661 days ago · 3 km deep · 70 km away
48. 1.76km SSW of Redlands, CAThu, Nov 17, 2:10 PM PST · 15661 days ago · 15 km deep · 64 km away
49. 1.96km S of Redlands, CAThu, Nov 17, 5:31 PM PST · 15660 days ago · 14 km deep · 66 km away
50. 3.16km SSW of Redlands, CAFri, Nov 18, 1:55 AM PST · 15660 days ago · 14 km deep · 64 km away
51. 2.019km W of Rancho Palos Verdes, CAFri, Nov 18, 6:02 PM PST · 15659 days ago · 5 km deep · 67 km away
52. 1.75km S of Banning, CAFri, Nov 18, 10:24 PM PST · 15659 days ago · 13 km deep · 93 km away
53. 1.838km WSW of Encinitas, CAFri, Nov 18, 11:54 PM PST · 15659 days ago · 5 km deep · 98 km away
54. 1.98km ESE of Valle Vista, CASat, Nov 19, 12:41 AM PST · 15659 days ago · 17 km deep · 97 km away
55. 1.62km ESE of Loma Linda, CASat, Nov 19, 4:21 AM PST · 15659 days ago · 16 km deep · 64 km away
56. 2.93km ESE of Loma Linda, CASat, Nov 19, 1:44 PM PST · 15659 days ago · 15 km deep · 64 km away
57. 1.77km NNW of Banning, CASat, Nov 19, 2:16 PM PST · 15659 days ago · 10 km deep · 92 km away
58. 1.87km ENE of Nuevo, CASat, Nov 19, 6:46 PM PST · 15658 days ago · 14 km deep · 73 km away
59. 1.87km NNE of Crestline, CASat, Nov 19, 6:48 PM PST · 15658 days ago · 8 km deep · 78 km away
60. 1.72km SW of San Jacinto, CASun, Nov 20, 7:55 AM PST · 15658 days ago · 13 km deep · 82 km away

The first 60 of 129.

Before

1. 2.00km ESE of Loma Linda, CAFri, Oct 28, 10:12 PM PDT · 15680 days ago · 14 km deep · 62 km away
2. 1.83km NNE of Fontana, CAFri, Oct 28, 2:53 AM PDT · 15681 days ago · 5 km deep · 53 km away
3. 1.711km NNE of Lake Arrowhead, CAThu, Oct 27, 4:28 AM PDT · 15682 days ago · 8 km deep · 90 km away
4. 2.33km SSW of Fontana, CAWed, Oct 26, 11:54 AM PDT · 15683 days ago · 3 km deep · 47 km away
5. 2.03km SSW of Fontana, CAWed, Oct 26, 2:30 AM PDT · 15683 days ago · 3 km deep · 47 km away
6. 1.84km SSW of Fontana, CAWed, Oct 26, 1:53 AM PDT · 15683 days ago · 3 km deep · 46 km away
7. 1.94km SSW of Fontana, CAWed, Oct 26, 1:29 AM PDT · 15683 days ago · 4 km deep · 46 km away
8. 1.94km SSW of Fontana, CAWed, Oct 26, 1:09 AM PDT · 15683 days ago · 4 km deep · 46 km away
9. 2.03km SSW of Fontana, CAWed, Oct 26, 12:44 AM PDT · 15683 days ago · 3 km deep · 47 km away
10. 2.43km SW of Fontana, CAWed, Oct 26, 12:30 AM PDT · 15683 days ago · 2 km deep · 46 km away
11. 2.13km SSW of Fontana, CAWed, Oct 26, 12:15 AM PDT · 15683 days ago · 3 km deep · 47 km away
12. 2.57km NE of North Tustin, CATue, Oct 25, 7:32 PM PDT · 15683 days ago · 4 km deep · 12 km away
13. 1.73km SSW of Fontana, CATue, Oct 25, 7:21 PM PDT · 15683 days ago · 3 km deep · 47 km away
14. 1.87km NNE of Banning, CATue, Oct 25, 7:05 PM PDT · 15683 days ago · 12 km deep · 96 km away
15. 1.711km NNE of Lake Arrowhead, CATue, Oct 25, 5:55 PM PDT · 15684 days ago · 7 km deep · 90 km away
16. 3.012km NNE of Lake Arrowhead, CATue, Oct 25, 5:30 PM PDT · 15684 days ago · 2 km deep · 90 km away
17. 1.59km WSW of Idyllwild, CATue, Oct 25, 3:43 PM PDT · 15684 days ago · 19 km deep · 99 km away
18. 1.77km SE of Chino Hills, CATue, Oct 25, 10:52 AM PDT · 15684 days ago · 4 km deep · 21 km away
19. 2.415km S of Las Flores, CATue, Oct 25, 6:08 AM PDT · 15684 days ago · 6 km deep · 72 km away
20. 1.96km SE of Ontario, CATue, Oct 25, 12:36 AM PDT · 15684 days ago · 6 km deep · 34 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci23348. Read Sat, Oct 3, 2026, 12:29 PM UTC.