M1.7 earthquake 8km SSE of Big Bear Lake, CA

Magnitude

1.7 (mc), micro

Local time

Mon, Jul 24, 1978, 12:45 AM PDT

UTC

1978-07-24 07:45:26 UTC

Depth

11.8 km (7.3 mi), shallow

Epicenter

34.174° N, 116.881° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.3 km horizontally, 1.0 km in depth

Depth from

From location

Station coverage gap

62°

Stations used

26

• Big Bear Lake, CaliforniaPopulation 5,213. Forecast8 kmSSE
• Big Bear City, CaliforniaPopulation 12,304. Forecast10 kmSSW
• San Bernardino, CaliforniaPopulation 216,108. Forecast38 kmE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast126 kmE

After

1. 1.52km N of Palomar Observatory, CASat, Aug 12, 12:52 AM PDT · 17574 days ago · 9 km deep · 89 km away
2. 1.66km SSW of Devore, CASat, Aug 12, 8:40 AM PDT · 17574 days ago · 9 km deep · 50 km away
3. 1.74km SW of Big Bear Lake, CASat, Aug 12, 9:34 AM PDT · 17574 days ago · 7 km deep · 8 km away
4. 1.84km SW of Big Bear Lake, CASat, Aug 12, 9:34 AM PDT · 17574 days ago · 9 km deep · 8 km away
5. 2.217km NW of Yucca Valley, CASat, Aug 12, 10:23 AM PDT · 17574 days ago · 9 km deep · 30 km away
6. 1.74km NNW of Beaumont, CASat, Aug 12, 3:12 PM PDT · 17574 days ago · 17 km deep · 26 km away
7. 1.66km SSE of Banning, CASun, Aug 13, 8:44 AM PDT · 17573 days ago · 14 km deep · 33 km away
8. 2.72km W of Devore, CASun, Aug 13, 2:48 PM PDT · 17573 days ago · 11 km deep · 50 km away
9. 2.67km NNE of Banning, CASun, Aug 13, 7:05 PM PDT · 17573 days ago · 6 km deep · 22 km away
10. 1.86km S of Pearblossum, CAMon, Aug 14, 3:22 AM PDT · 17572 days ago · 12 km deep · 100 km away
11. 2.124km NE of Thermal, CAMon, Aug 14, 6:57 AM PDT · 17572 days ago · 0 km deep · 99 km away
12. 1.710km N of Big Bear Lake, CAMon, Aug 14, 9:32 AM PDT · 17572 days ago · 3 km deep · 18 km away
13. 2.14km NNE of Running Springs, CAMon, Aug 14, 10:13 AM PDT · 17572 days ago · 2 km deep · 21 km away
14. 1.911km NE of Cabazon, CAMon, Aug 14, 11:27 AM PDT · 17572 days ago · 18 km deep · 25 km away
15. 1.89km W of Garnet, CAMon, Aug 14, 2:05 PM PDT · 17572 days ago · 17 km deep · 38 km away
16. 1.612km N of Banning, CAMon, Aug 14, 2:15 PM PDT · 17572 days ago · 17 km deep · 16 km away
17. 2.121km N of Joshua Tree, CAMon, Aug 14, 2:54 PM PDT · 17572 days ago · 1 km deep · 53 km away
18. 2.221km N of Joshua Tree, CAMon, Aug 14, 4:25 PM PDT · 17572 days ago · 0 km deep · 53 km away
19. 1.910km SE of Anza, CAMon, Aug 14, 5:32 PM PDT · 17572 days ago · 9 km deep · 80 km away
20. 1.617km ESE of Anza, CATue, Aug 15, 7:25 AM PDT · 17571 days ago · 14 km deep · 82 km away
21. 2.922km ESE of Anza, CATue, Aug 15, 8:50 AM PDT · 17571 days ago · 7 km deep · 89 km away
22. 2.010km SSW of Idyllwild, CATue, Aug 15, 12:42 PM PDT · 17571 days ago · 13 km deep · 58 km away
23. 1.911km N of Joshua Tree, CAWed, Aug 16, 3:07 AM PDT · 17570 days ago · 6 km deep · 54 km away
24. 1.86km NNE of Fontana, CAWed, Aug 16, 10:04 AM PDT · 17570 days ago · 5 km deep · 52 km away
25. 1.610km NE of Cabazon, CAWed, Aug 16, 1:56 PM PDT · 17570 days ago · 14 km deep · 28 km away
26. 2.04km SW of Big Bear Lake, CAWed, Aug 16, 7:16 PM PDT · 17570 days ago · 6 km deep · 8 km away
27. 2.017km ESE of Anza, CAThu, Aug 17, 5:01 AM PDT · 17569 days ago · 14 km deep · 83 km away
28. 2.06km SE of Yorba Linda, CAThu, Aug 17, 2:27 PM PDT · 17569 days ago · 5 km deep · 89 km away
29. 1.511km WNW of Morongo Valley, CAFri, Aug 18, 9:45 AM PDT · 17568 days ago · 9 km deep · 20 km away
30. 1.910km SW of Lucerne Valley, CAFri, Aug 18, 7:03 PM PDT · 17568 days ago · 4 km deep · 28 km away
31. 2.04km SSE of Loma Linda, CASat, Aug 19, 4:12 AM PDT · 17567 days ago · 13 km deep · 37 km away
32. 1.64km SE of Big Bear Lake, CASat, Aug 19, 6:37 AM PDT · 17567 days ago · 17 km deep · 5 km away
33. 1.612km SW of Morongo Valley, CASat, Aug 19, 2:53 PM PDT · 17567 days ago · 13 km deep · 30 km away
34. 2.76km NNE of Fontana, CASun, Aug 20, 10:57 AM PDT · 17566 days ago · 5 km deep · 52 km away
35. 1.918km NNW of Borrego Springs, CASun, Aug 20, 6:57 PM PDT · 17566 days ago · 15 km deep · 95 km away
36. 1.618km ESE of Anza, CAMon, Aug 21, 4:41 AM PDT · 17565 days ago · 14 km deep · 85 km away
37. 1.811km SE of Anza, CAMon, Aug 21, 7:44 AM PDT · 17565 days ago · 10 km deep · 81 km away
38. 1.67km ESE of Valle Vista, CAMon, Aug 21, 8:22 AM PDT · 17565 days ago · 17 km deep · 51 km away
39. 1.718km ESE of Anza, CAMon, Aug 21, 8:41 AM PDT · 17565 days ago · 14 km deep · 85 km away
40. 2.012km N of Cabazon, CAMon, Aug 21, 11:30 AM PDT · 17565 days ago · 9 km deep · 20 km away
41. 1.911km NW of Warner Springs, CAMon, Aug 21, 12:47 PM PDT · 17565 days ago · 16 km deep · 92 km away
42. 2.021km N of Joshua Tree, CAMon, Aug 21, 8:29 PM PDT · 17565 days ago · 0 km deep · 53 km away
43. 1.715km N of Borrego Springs, CATue, Aug 22, 7:55 AM PDT · 17564 days ago · 13 km deep · 98 km away
44. 2.35km S of Mentone, CATue, Aug 22, 10:31 AM PDT · 17564 days ago · 4 km deep · 28 km away
45. 1.84km S of Mentone, CATue, Aug 22, 7:13 PM PDT · 17564 days ago · 7 km deep · 28 km away
46. 1.86km SSE of Idyllwild, CAWed, Aug 23, 3:28 AM PDT · 17563 days ago · 16 km deep · 57 km away
47. 1.73km E of Wrightwood, CAWed, Aug 23, 5:36 AM PDT · 17563 days ago · 9 km deep · 69 km away
48. 1.67km WSW of Anza, CAWed, Aug 23, 9:06 AM PDT · 17563 days ago · 5 km deep · 73 km away
49. 2.16km NNE of Fontana, CAWed, Aug 23, 11:32 AM PDT · 17563 days ago · 3 km deep · 51 km away
50. 2.03km NW of Palomar Observatory, CAWed, Aug 23, 7:32 PM PDT · 17563 days ago · 8 km deep · 89 km away
51. 1.813km SE of Anza, CAThu, Aug 24, 4:04 PM PDT · 17562 days ago · 10 km deep · 84 km away
52. 1.84km NNW of Yorba Linda, CAThu, Aug 24, 9:03 PM PDT · 17562 days ago · 14 km deep · 92 km away
53. 1.912km N of Joshua Tree, CAFri, Aug 25, 12:31 PM PDT · 17561 days ago · 9 km deep · 53 km away
54. 1.511km SW of Morongo Valley, CASat, Aug 26, 1:30 AM PDT · 17560 days ago · 16 km deep · 32 km away
55. 1.74km WNW of Fontana, CASat, Aug 26, 9:51 AM PDT · 17560 days ago · 15 km deep · 58 km away
56. 1.62km SE of Charter Oak, CASat, Aug 26, 12:03 PM PDT · 17560 days ago · 16 km deep · 88 km away
57. 1.86km NNE of Fontana, CASun, Aug 27, 5:56 PM PDT · 17559 days ago · 4 km deep · 51 km away
58. 1.87km NNW of Cabazon, CASun, Aug 27, 8:40 PM PDT · 17559 days ago · 13 km deep · 23 km away
59. 2.412km NW of Big Bear Lake, CAMon, Aug 28, 5:54 AM PDT · 17558 days ago · 10 km deep · 20 km away
60. 1.614km SE of Anza, CAMon, Aug 28, 3:54 PM PDT · 17558 days ago · 13 km deep · 85 km away

The first 60 of 156.

From the USGS Earthquake Hazards Program and its partner networks, event ci3340887. Read Wed, Sep 23, 2026, 6:46 PM UTC.