M1.5 earthquake 16 km NNE of Mesa, California

Magnitude

1.5 (md), micro

Local time

Mon, Jul 21, 1986, 2:29 AM PDT

UTC

1986-07-21 09:29:05 UTC

Depth

9.8 km (6.1 mi), shallow

Epicenter

37.550° N, 118.454° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.5 km horizontally, 1.0 km in depth

Magnitude uncertainty

±0.14

Depth from

From location

Station coverage gap

206°, poorly surrounded by stations

Stations used

14

• Dixon Lane-Meadow Creek, CaliforniaPopulation 2,645. Forecast19 kmN
• Sanger, CaliforniaPopulation 24,950. Forecast135 kmNE
• Clovis, CaliforniaPopulation 104,180. Forecast137 kmNE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast389 kmN

After

1. 1.520 km ENE of Swall Meadows, CaliforniaMon, Jul 21, 2:34 AM PDT · 14681 days ago · 6 km deep · 5 km away
2. 1.514 km NNE of Mesa, CaliforniaMon, Jul 21, 2:40 AM PDT · 14681 days ago · 4 km deep · 2 km away
3. 1.819 km ENE of Swall Meadows, CaliforniaMon, Jul 21, 2:51 AM PDT · 14681 days ago · 6 km deep · 4 km away
4. 1.815 km NNE of Mesa, CaliforniaMon, Jul 21, 2:51 AM PDT · 14681 days ago · 6 km deep · 1 km away
5. 1.915 km N of Dixon Lane-Meadow Creek, CaliforniaMon, Jul 21, 2:58 AM PDT · 14681 days ago · 6 km deep · 4 km away
6. 2.921 km ENE of Swall Meadows, CaliforniaMon, Jul 21, 3:06 AM PDT · 14681 days ago · 6 km deep · 5 km away
7. 2.921 km ENE of Swall Meadows, CaliforniaMon, Jul 21, 3:07 AM PDT · 14681 days ago · 7 km deep · 5 km away
8. 1.9California-Nevada border regionMon, Jul 21, 3:29 AM PDT · 14681 days ago · 7 km deep · 4 km away
9. 2.015 km NNE of Mesa, CaliforniaMon, Jul 21, 3:40 AM PDT · 14681 days ago · 5 km deep · 1 km away
10. 1.715 km NNE of Mesa, CaliforniaMon, Jul 21, 3:54 AM PDT · 14681 days ago · 5 km deep · 1 km away
11. 2.114 km NNE of Mesa, CaliforniaMon, Jul 21, 4:09 AM PDT · 14681 days ago · 5 km deep · 3 km away
12. 2.821 km ENE of Swall Meadows, CaliforniaMon, Jul 21, 4:12 AM PDT · 14681 days ago · 7 km deep · 5 km away
13. 4.317 km ENE of Swall Meadows, CaliforniaMon, Jul 21, 4:15 AM PDT · 14681 days ago · 7 km deep · 2 km away
14. 1.820 km ENE of Swall Meadows, CaliforniaMon, Jul 21, 4:20 AM PDT · 14681 days ago · 6 km deep · 4 km away
15. 2.119 km ENE of Swall Meadows, CaliforniaMon, Jul 21, 4:36 AM PDT · 14681 days ago · 6 km deep · 3 km away
16. 2.418 km ENE of Swall Meadows, CaliforniaMon, Jul 21, 4:38 AM PDT · 14681 days ago · 7 km deep · 2 km away
17. 2.314 km NE of Mesa, CaliforniaMon, Jul 21, 4:49 AM PDT · 14681 days ago · 4 km deep · 3 km away
18. 2.416 km NNE of Mesa, CaliforniaMon, Jul 21, 5:00 AM PDT · 14681 days ago · 7 km deep · 1 km away
19. 1.815 km NNE of Mesa, CaliforniaMon, Jul 21, 5:13 AM PDT · 14680 days ago · 7 km deep · 1 km away
20. 1.815 km NNE of Mesa, CaliforniaMon, Jul 21, 5:24 AM PDT · 14680 days ago · 5 km deep · 2 km away
21. 1.714 km NE of Mesa, CaliforniaMon, Jul 21, 5:34 AM PDT · 14680 days ago · 5 km deep · 3 km away
22. 1.6California-Nevada border regionMon, Jul 21, 5:38 AM PDT · 14680 days ago · -3 km deep · 13 km away
23. 1.815 km NNE of Mesa, CaliforniaMon, Jul 21, 5:59 AM PDT · 14680 days ago · 5 km deep · 1 km away
24. 2.115 km NNE of Mesa, CaliforniaMon, Jul 21, 6:07 AM PDT · 14680 days ago · 5 km deep · 1 km away
25. 3.419 km NNE of Mesa, CaliforniaMon, Jul 21, 6:28 AM PDT · 14680 days ago · 6 km deep · 3 km away
26. 1.715 km ENE of Swall Meadows, CaliforniaMon, Jul 21, 6:31 AM PDT · 14680 days ago · 5 km deep · 2 km away
27. 1.913 km NNE of Mesa, CaliforniaMon, Jul 21, 6:32 AM PDT · 14680 days ago · 4 km deep · 3 km away
28. 1.714 km NNE of Mesa, CaliforniaMon, Jul 21, 6:32 AM PDT · 14680 days ago · 3 km deep · 2 km away
29. 2.117 km NE of Mesa, CaliforniaMon, Jul 21, 7:03 AM PDT · 14680 days ago · 7 km deep · 2 km away
30. 2.215 km NNE of Mesa, CaliforniaMon, Jul 21, 7:18 AM PDT · 14680 days ago · 6 km deep · 2 km away
31. 1.917 km NE of Mesa, CaliforniaMon, Jul 21, 7:41 AM PDT · 14680 days ago · 6 km deep · 3 km away
32. 6.4The 1986 Chalfant Valley, California EarthquakeMon, Jul 21, 7:42 AM PDT · 14680 days ago · 9 km deep · 2 km away
33. 4.620 km NNE of Mesa, CaliforniaMon, Jul 21, 7:45 AM PDT · 14680 days ago · 6 km deep · 4 km away
34. 3.822km N of Dixon Lane-Meadow Creek, CAMon, Jul 21, 7:46 AM PDT · 14680 days ago · 4 km deep · 5 km away
35. 3.824km NW of West Bishop, CAMon, Jul 21, 7:46 AM PDT · 14680 days ago · 5 km deep · 20 km away
36. 4.145km NE of Bishop, CAMon, Jul 21, 7:47 AM PDT · 14680 days ago · 5 km deep · 41 km away
37. 4.022km N of Dixon Lane-Meadow Creek, CAMon, Jul 21, 7:48 AM PDT · 14680 days ago · 5 km deep · 5 km away
38. 3.522km N of Dixon Lane-Meadow Creek, CAMon, Jul 21, 7:50 AM PDT · 14680 days ago · 4 km deep · 5 km away
39. 5.711 km NE of Mesa, CaliforniaMon, Jul 21, 7:51 AM PDT · 14680 days ago · 8 km deep · 6 km away
40. 4.022km N of Dixon Lane-Meadow Creek, CAMon, Jul 21, 7:52 AM PDT · 14680 days ago · 5 km deep · 5 km away
41. 4.516km NE of Dixon Lane-Meadow Creek, CAMon, Jul 21, 7:53 AM PDT · 14680 days ago · 5 km deep · 15 km away
42. 4.920 km NNE of Mesa, CaliforniaMon, Jul 21, 7:53 AM PDT · 14680 days ago · 6 km deep · 4 km away
43. 4.238km ENE of Bishop, CAMon, Jul 21, 7:54 AM PDT · 14680 days ago · 4 km deep · 40 km away
44. 3.522km N of Dixon Lane-Meadow Creek, CAMon, Jul 21, 7:55 AM PDT · 14680 days ago · 5 km deep · 5 km away
45. 3.822km N of Dixon Lane-Meadow Creek, CAMon, Jul 21, 7:56 AM PDT · 14680 days ago · 5 km deep · 5 km away
46. 3.722km N of Dixon Lane-Meadow Creek, CAMon, Jul 21, 7:57 AM PDT · 14680 days ago · 5 km deep · 5 km away
47. 4.813 km N of Dixon Lane-Meadow Creek, CaliforniaMon, Jul 21, 7:57 AM PDT · 14680 days ago · 2 km deep · 8 km away
48. 3.88 km NE of Swall Meadows, CaliforniaMon, Jul 21, 7:58 AM PDT · 14680 days ago · 8 km deep · 11 km away
49. 3.918 km ENE of Sunny Slopes, CaliforniaMon, Jul 21, 8:00 AM PDT · 14680 days ago · 2 km deep · 7 km away
50. 3.514 km E of Sunny Slopes, CaliforniaMon, Jul 21, 8:03 AM PDT · 14680 days ago · 5 km deep · 7 km away
51. 4.112 km NNE of Mesa, CaliforniaMon, Jul 21, 8:05 AM PDT · 14680 days ago · -1 km deep · 4 km away
52. 3.78 km E of Swall Meadows, CaliforniaMon, Jul 21, 8:06 AM PDT · 14680 days ago · 4 km deep · 9 km away
53. 3.111 km NE of Swall Meadows, CaliforniaMon, Jul 21, 8:07 AM PDT · 14680 days ago · 2 km deep · 8 km away
54. 3.115 km E of Bishop, CaliforniaMon, Jul 21, 8:09 AM PDT · 14680 days ago · -2 km deep · 31 km away
55. 3.811 km ENE of Swall Meadows, CaliforniaMon, Jul 21, 8:10 AM PDT · 14680 days ago · 3 km deep · 6 km away
56. 3.716 km SSE of Benton, CaliforniaMon, Jul 21, 8:10 AM PDT · 14680 days ago · 10 km deep · 15 km away
57. 4.412 km ENE of Swall Meadows, CaliforniaMon, Jul 21, 8:11 AM PDT · 14680 days ago · 11 km deep · 5 km away
58. 2.98 km E of Sunny Slopes, CaliforniaMon, Jul 21, 8:14 AM PDT · 14680 days ago · 7 km deep · 11 km away
59. 3.014 km NNE of Mesa, CaliforniaMon, Jul 21, 8:14 AM PDT · 14680 days ago · 11 km deep · 2 km away
60. 3.513km N of Toms Place, CAMon, Jul 21, 8:15 AM PDT · 14680 days ago · 7 km deep · 23 km away

The first 60 of at least 200.

Before

1. 1.614 km ENE of Swall Meadows, CaliforniaMon, Jul 21, 2:23 AM PDT · 14681 days ago · 6 km deep · 3 km away
2. 2.614 km NNE of Mesa, CaliforniaMon, Jul 21, 2:13 AM PDT · 14681 days ago · 5 km deep · 2 km away
3. 1.515 km NNE of Mesa, CaliforniaMon, Jul 21, 2:13 AM PDT · 14681 days ago · 6 km deep · 1 km away
4. 1.616 km NNE of Mesa, CaliforniaMon, Jul 21, 2:07 AM PDT · 14681 days ago · 6 km deep · 0 km away
5. 2.920 km NNE of Mesa, CaliforniaMon, Jul 21, 2:02 AM PDT · 14681 days ago · 5 km deep · 4 km away
6. 2.017 km ENE of Swall Meadows, CaliforniaMon, Jul 21, 1:59 AM PDT · 14681 days ago · 7 km deep · 2 km away
7. 2.314 km NNE of Mesa, CaliforniaMon, Jul 21, 1:49 AM PDT · 14681 days ago · 3 km deep · 2 km away
8. 1.515 km NNE of Mesa, CaliforniaMon, Jul 21, 1:49 AM PDT · 14681 days ago · 5 km deep · 2 km away
9. 2.415 km NNE of Mesa, CaliforniaMon, Jul 21, 1:46 AM PDT · 14681 days ago · 6 km deep · 1 km away
10. 1.721 km N of Dixon Lane-Meadow Creek, CaliforniaMon, Jul 21, 1:42 AM PDT · 14681 days ago · 3 km deep · 7 km away
11. 1.720 km N of Dixon Lane-Meadow Creek, CaliforniaMon, Jul 21, 1:37 AM PDT · 14681 days ago · 1 km deep · 7 km away
12. 1.719 km ENE of Swall Meadows, CaliforniaMon, Jul 21, 1:34 AM PDT · 14681 days ago · 6 km deep · 3 km away
13. 2.0California-Nevada border regionMon, Jul 21, 1:22 AM PDT · 14681 days ago · 6 km deep · 1 km away
14. 2.015 km ENE of Swall Meadows, CaliforniaMon, Jul 21, 1:21 AM PDT · 14681 days ago · 5 km deep · 3 km away
15. 3.619 km ENE of Swall Meadows, CaliforniaMon, Jul 21, 1:20 AM PDT · 14681 days ago · 6 km deep · 3 km away
16. 1.514 km NNE of Mesa, CaliforniaMon, Jul 21, 1:18 AM PDT · 14681 days ago · 5 km deep · 2 km away
17. 1.615 km NNE of Mesa, CaliforniaMon, Jul 21, 1:15 AM PDT · 14681 days ago · 5 km deep · 2 km away
18. 2.221 km ENE of Swall Meadows, CaliforniaMon, Jul 21, 1:13 AM PDT · 14681 days ago · 6 km deep · 5 km away
19. 4.114 km NNE of Mesa, CaliforniaMon, Jul 21, 1:10 AM PDT · 14681 days ago · 4 km deep · 2 km away
20. 1.918 km ENE of Swall Meadows, CaliforniaMon, Jul 21, 1:01 AM PDT · 14681 days ago · 7 km deep · 3 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc76809. Read Tue, Sep 29, 2026, 11:34 PM UTC.