M1.8 earthquake 5km ENE of Brea, CA

Magnitude

1.8 (Mh), micro

Magnitude from

Southern California Seismic Network

Local time

Tue, Jul 5, 1983, 10:57 PM PDT

UTC

1983-07-06 05:57:40 UTC

Depth

4.8 km (3.0 mi), shallow

Epicenter

33.933° N, 117.849° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.7 km horizontally, 31.6 km in depth

Magnitude uncertainty

±0.21

Depth from

Operator assigned

Station coverage gap

118°

Stations used

9

• Brea, CaliforniaPopulation 41,944. Forecast5 kmENE
• Fullerton, CaliforniaPopulation 140,847. Forecast10 kmNE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast39 kmESE

After

1. 2.14km E of Brea, CAWed, Jul 6, 12:48 AM PDT · 15795 days ago · 2 km deep · 1 km away
2. 1.64km NNW of Santa Clarita, CAWed, Jul 6, 1:07 AM PDT · 15795 days ago · 9 km deep · 85 km away
3. 2.48km ENE of Yucaipa, CAWed, Jul 6, 1:54 PM PDT · 15795 days ago · 5 km deep · 83 km away
4. 1.65km NE of Banning, CAWed, Jul 6, 6:22 PM PDT · 15795 days ago · 8 km deep · 93 km away
5. 1.98km NE of Running Springs, CAThu, Jul 7, 5:35 AM PDT · 15794 days ago · 5 km deep · 82 km away
6. 2.034km SE of Avalon, CAFri, Jul 8, 5:50 AM PDT · 15793 days ago · 6 km deep · 93 km away
7. 1.96km S of Redlands, CAFri, Jul 8, 9:56 AM PDT · 15793 days ago · 10 km deep · 61 km away
8. 2.23km ESE of Yucaipa, CAMon, Jul 11, 5:32 AM PDT · 15790 days ago · 5 km deep · 78 km away
9. 2.023km NNE of Avalon, CATue, Jul 12, 6:28 AM PDT · 15789 days ago · 0 km deep · 56 km away
10. 1.83km S of Santa Clarita, CATue, Jul 12, 10:11 AM PDT · 15789 days ago · 12 km deep · 79 km away
11. 1.53km SE of Elizabeth Lake, CAWed, Jul 13, 1:27 PM PDT · 15788 days ago · -1 km deep · 92 km away
12. 2.47km SW of Huntington Beach, CAWed, Jul 13, 4:53 PM PDT · 15788 days ago · 5 km deep · 37 km away
13. 3.01km E of Silver Lake, CAThu, Jul 14, 7:59 AM PDT · 15787 days ago · 8 km deep · 42 km away
14. 1.92km WNW of Devore, CAFri, Jul 15, 2:05 AM PDT · 15786 days ago · 11 km deep · 51 km away
15. 1.86km SE of Lucerne Valley, CAFri, Jul 15, 11:15 PM PDT · 15785 days ago · 1 km deep · 99 km away
16. 1.96km N of Cabazon, CASat, Jul 16, 8:56 AM PDT · 15785 days ago · 12 km deep · 98 km away
17. 2.95km NE of Running Springs, CASun, Jul 17, 9:36 PM PDT · 15783 days ago · 0 km deep · 79 km away
18. 1.71km NNE of Paramount, CAMon, Jul 18, 6:37 PM PDT · 15783 days ago · 1 km deep · 28 km away
19. 2.48km WSW of Malibu, CAMon, Jul 18, 8:19 PM PDT · 15782 days ago · 13 km deep · 96 km away
20. 2.16km SSW of Devore, CATue, Jul 19, 8:05 AM PDT · 15782 days ago · 3 km deep · 47 km away
21. 1.63km NW of Fontana, CAThu, Jul 21, 4:20 AM PDT · 15780 days ago · 8 km deep · 39 km away
22. 1.57km NE of Banning, CAThu, Jul 21, 10:22 AM PDT · 15780 days ago · 13 km deep · 94 km away
23. 1.62km SSE of Muscoy, CAFri, Jul 22, 9:45 PM PDT · 15778 days ago · 10 km deep · 52 km away
24. 1.621km S of Las Flores, CASun, Jul 24, 6:25 AM PDT · 15777 days ago · 13 km deep · 73 km away
25. 1.612km N of Cabazon, CASun, Jul 24, 1:22 PM PDT · 15777 days ago · 9 km deep · 99 km away
26. 1.55km NNE of Banning, CAMon, Jul 25, 10:14 AM PDT · 15776 days ago · 14 km deep · 91 km away
27. 2.34km NNE of Fontana, CAMon, Jul 25, 12:53 PM PDT · 15776 days ago · 6 km deep · 43 km away
28. 1.86km SSW of Banning, CATue, Jul 26, 3:11 AM PDT · 15775 days ago · 7 km deep · 87 km away
29. 1.83km ESE of Commerce, CATue, Jul 26, 5:12 AM PDT · 15775 days ago · 5 km deep · 27 km away
30. 2.29km NNE of Banning, CATue, Jul 26, 5:32 PM PDT · 15775 days ago · 7 km deep · 94 km away
31. 1.75km WNW of San Jacinto, CAWed, Jul 27, 1:25 AM PDT · 15774 days ago · 10 km deep · 79 km away
32. 2.024km SSE of San Pedro, CAWed, Jul 27, 10:02 PM PDT · 15773 days ago · 5 km deep · 55 km away
33. 1.74km SE of Placentia, CAThu, Jul 28, 5:12 AM PDT · 15773 days ago · 5 km deep · 9 km away
34. 2.12km NW of Beaumont, CAThu, Jul 28, 7:30 AM PDT · 15773 days ago · 13 km deep · 79 km away
35. 1.645km SSW of San Clemente, CAFri, Jul 29, 9:22 AM PDT · 15772 days ago · 6 km deep · 95 km away
36. 2.02km WSW of Rolling Hills Estates, CAFri, Jul 29, 11:47 AM PDT · 15772 days ago · 7 km deep · 52 km away
37. 1.87km SE of Valle Vista, CAFri, Jul 29, 10:52 PM PDT · 15771 days ago · 14 km deep · 97 km away
38. 2.09km NNW of Big Bear City, CASun, Jul 31, 2:01 AM PDT · 15770 days ago · 4 km deep · 98 km away
39. 1.75km SE of Loma Linda, CASun, Jul 31, 2:45 PM PDT · 15770 days ago · 16 km deep · 58 km away
40. 3.04km NNE of Fontana, CAMon, Aug 1, 8:48 AM PDT · 15769 days ago · 2 km deep · 44 km away
41. 2.12km W of Baldwin Park, CAMon, Aug 1, 6:00 PM PDT · 15769 days ago · 14 km deep · 21 km away
42. 1.86km N of Yucaipa, CAMon, Aug 1, 8:02 PM PDT · 15768 days ago · 9 km deep · 76 km away
43. 2.14km WNW of Willowbrook, CAMon, Aug 1, 11:54 PM PDT · 15768 days ago · 12 km deep · 41 km away
44. 2.29km WSW of Beaumont, CATue, Aug 2, 7:59 AM PDT · 15768 days ago · 16 km deep · 72 km away
45. 1.74km N of Fontana, CAWed, Aug 3, 11:04 AM PDT · 15767 days ago · 8 km deep · 43 km away
46. 1.86km NE of Banning, CAWed, Aug 3, 6:06 PM PDT · 15767 days ago · 5 km deep · 94 km away
47. 1.95km ESE of Winchester, CAThu, Aug 4, 3:55 PM PDT · 15766 days ago · 14 km deep · 80 km away
48. 1.76km N of Moreno Valley, CAThu, Aug 4, 6:10 PM PDT · 15766 days ago · 14 km deep · 56 km away
49. 2.09km S of Big Bear Lake, CAFri, Aug 5, 8:46 AM PDT · 15765 days ago · 10 km deep · 91 km away
50. 2.26km NNW of Malibu, CAFri, Aug 5, 12:11 PM PDT · 15765 days ago · 8 km deep · 93 km away
51. 2.44km NNE of Fontana, CASun, Aug 7, 4:30 PM PDT · 15763 days ago · 7 km deep · 44 km away
52. 2.56km N of Beaumont, CAMon, Aug 8, 2:27 PM PDT · 15762 days ago · 13 km deep · 80 km away
53. 1.93km ENE of Loma Linda, CATue, Aug 9, 4:27 AM PDT · 15761 days ago · 12 km deep · 58 km away
54. 2.95km N of Beaumont, CATue, Aug 9, 2:27 PM PDT · 15761 days ago · 5 km deep · 81 km away
55. 1.65km NW of Mira Loma, CATue, Aug 9, 9:30 PM PDT · 15760 days ago · 8 km deep · 29 km away
56. 1.75km NW of San Jacinto, CAWed, Aug 10, 11:21 PM PDT · 15759 days ago · 8 km deep · 80 km away
57. 2.86km N of Beaumont, CAThu, Aug 11, 2:09 AM PDT · 15759 days ago · 13 km deep · 81 km away
58. 2.86km SSW of Banning, CAThu, Aug 11, 11:35 AM PDT · 15759 days ago · 10 km deep · 89 km away
59. 1.65km E of Yucaipa, CAMon, Aug 15, 4:53 AM PDT · 15755 days ago · 13 km deep · 80 km away
60. 2.08km SSE of Big Bear Lake, CAWed, Aug 17, 5:46 AM PDT · 15753 days ago · 7 km deep · 95 km away

The first 60 of 91.

Before

1. 2.16km NW of San Jacinto, CATue, Jul 5, 7:54 PM PDT · 15795 days ago · 5 km deep · 79 km away
2. 2.63km NNE of Fontana, CAMon, Jul 4, 7:50 PM PDT · 15796 days ago · 3 km deep · 43 km away
3. 2.28km N of Banning, CAMon, Jul 4, 6:25 PM PDT · 15797 days ago · 12 km deep · 89 km away
4. 1.87km SW of Big Bear Lake, CASun, Jul 3, 6:50 PM PDT · 15798 days ago · 6 km deep · 87 km away
5. 2.541km SSW of San Clemente, CAFri, Jul 1, 7:00 PM PDT · 15800 days ago · 6 km deep · 92 km away
6. 2.15km NNW of Banning, CAFri, Jul 1, 3:13 PM PDT · 15800 days ago · 12 km deep · 87 km away
7. 2.024km NNE of Avalon, CAWed, Jun 29, 7:42 AM PDT · 15802 days ago · 6 km deep · 55 km away
8. 1.87km NNE of Moreno Valley, CAWed, Jun 29, 3:22 AM PDT · 15802 days ago · 10 km deep · 60 km away
9. 1.95km WSW of Lucerne Valley, CAWed, Jun 29, 2:49 AM PDT · 15802 days ago · 1 km deep · 94 km away
10. 1.87km NNE of Moreno Valley, CATue, Jun 28, 12:36 AM PDT · 15803 days ago · 9 km deep · 60 km away
11. 1.91km ENE of Muscoy, CASun, Jun 26, 5:57 AM PDT · 15805 days ago · 5 km deep · 54 km away
12. 1.63km SE of Loma Linda, CASat, Jun 25, 4:15 PM PDT · 15806 days ago · 14 km deep · 57 km away
13. 1.86km NNE of Moreno Valley, CASat, Jun 25, 6:11 AM PDT · 15806 days ago · 5 km deep · 60 km away
14. 2.43km SE of Loma Linda, CASat, Jun 25, 2:21 AM PDT · 15806 days ago · 14 km deep · 58 km away
15. 2.02km ESE of Long Beach, CAThu, Jun 23, 9:05 PM PDT · 15807 days ago · -1 km deep · 30 km away
16. 2.012km N of Cabazon, CAThu, Jun 23, 7:19 PM PDT · 15808 days ago · 12 km deep · 100 km away
17. 2.85km N of San Bernardino, CAThu, Jun 23, 6:52 PM PDT · 15808 days ago · 6 km deep · 58 km away
18. 1.910km NNE of Castaic, CAThu, Jun 23, 1:42 AM PDT · 15808 days ago · 21 km deep · 96 km away
19. 1.616km WSW of Dana Point, CATue, Jun 21, 1:31 AM PDT · 15810 days ago · 5 km deep · 60 km away
20. 1.86km SW of Devore, CAMon, Jun 20, 11:06 PM PDT · 15810 days ago · 11 km deep · 47 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci12328039. Read Sat, Oct 3, 2026, 2:18 PM UTC.