M2.3 earthquake 4 km WNW of Topaz, California

Magnitude

2.3 (md), micro

Local time

Thu, Jul 31, 1986, 9:28 AM PDT

UTC

1986-07-31 16:28:37 UTC

Depth

6.8 km (4.3 mi), shallow

Epicenter

38.636° N, 119.565° W

Region

Nevada

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.4 km horizontally, 1.1 km in depth

Magnitude uncertainty

±0.20

Depth from

From location

Station coverage gap

102°

Stations used

11

• Topaz Ranch Estates, NevadaPopulation 1,501. Forecast12 kmSSW
• Gardnerville Ranchos, NevadaPopulation 11,312. Forecast32 kmSSE
• Reno, NevadaPopulation 264,165. Forecast102 kmSSE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast523 kmNNW

After

1. 1.520 km E of Mono City, CaliforniaFri, Aug 1, 12:01 AM PDT · 14662 days ago · 5 km deep · 87 km away
2. 1.620 km E of Mono City, CaliforniaFri, Aug 1, 2:02 AM PDT · 14662 days ago · 1 km deep · 86 km away
3. 1.720 km E of Mono City, CaliforniaFri, Aug 1, 2:23 AM PDT · 14662 days ago · 2 km deep · 86 km away
4. 1.824 km ENE of Mono City, CaliforniaFri, Aug 1, 2:41 AM PDT · 14662 days ago · 4 km deep · 85 km away
5. 1.720 km E of Mono City, CaliforniaFri, Aug 1, 5:23 AM PDT · 14662 days ago · 0 km deep · 86 km away
6. 1.720 km E of Mono City, CaliforniaSat, Aug 2, 9:22 PM PDT · 14660 days ago · 4 km deep · 86 km away
7. 1.88 km WNW of Topaz Lake, NevadaMon, Aug 4, 12:56 AM PDT · 14659 days ago · -2 km deep · 11 km away
8. 1.68 km W of Floriston, CaliforniaTue, Aug 5, 2:44 PM PDT · 14658 days ago · 7 km deep · 98 km away
9. 1.820 km E of Mono City, CaliforniaThu, Aug 7, 5:48 AM PDT · 14656 days ago · 2 km deep · 87 km away
10. 1.720 km E of Mono City, CaliforniaFri, Aug 8, 10:19 PM PDT · 14654 days ago · 5 km deep · 87 km away
11. 1.920 km E of Mono City, CaliforniaFri, Aug 8, 11:15 PM PDT · 14654 days ago · 6 km deep · 87 km away
12. 2.012 km WNW of Mono City, CaliforniaSat, Aug 9, 2:29 AM PDT · 14654 days ago · 4 km deep · 65 km away
13. 1.621 km E of Mono City, CaliforniaTue, Aug 12, 3:07 PM PDT · 14651 days ago · -1 km deep · 87 km away
14. 1.820 km ENE of Lee Vining, CaliforniaTue, Aug 12, 3:10 PM PDT · 14651 days ago · 3 km deep · 89 km away
15. 2.121 km E of Mono City, CaliforniaTue, Aug 12, 6:39 PM PDT · 14650 days ago · 3 km deep · 87 km away
16. 1.720 km ENE of Lee Vining, CaliforniaTue, Aug 12, 6:52 PM PDT · 14650 days ago · 8 km deep · 90 km away
17. 1.821 km ENE of Lee Vining, CaliforniaTue, Aug 12, 8:28 PM PDT · 14650 days ago · 4 km deep · 88 km away
18. 1.71 km NE of Mesa Vista, CaliforniaThu, Aug 14, 1:05 AM PDT · 14649 days ago · 1 km deep · 28 km away
19. 1.621 km ENE of Lee Vining, CaliforniaThu, Aug 14, 6:22 AM PDT · 14649 days ago · -1 km deep · 89 km away
20. 1.6California-Nevada border regionFri, Aug 15, 5:04 AM PDT · 14648 days ago · 2 km deep · 88 km away
21. 1.91 km NE of Mesa Vista, CaliforniaMon, Aug 18, 8:03 AM PDT · 14645 days ago · -2 km deep · 28 km away
22. 1.721 km E of Mono City, CaliforniaWed, Aug 20, 10:49 PM PDT · 14642 days ago · 6 km deep · 86 km away
23. 2.021 km E of Mono City, CaliforniaWed, Aug 20, 11:50 PM PDT · 14642 days ago · 5 km deep · 87 km away
24. 2.021 km E of Mono City, CaliforniaSun, Aug 24, 3:21 AM PDT · 14639 days ago · -1 km deep · 88 km away
25. 2.02 km SW of Coleville, CaliforniaMon, Aug 25, 8:33 AM PDT · 14638 days ago · 1 km deep · 10 km away
26. 1.834 km NW of Benton, CaliforniaMon, Aug 25, 10:53 AM PDT · 14638 days ago · 5 km deep · 98 km away
27. 2.37 km SW of Topaz Lake, NevadaWed, Aug 27, 2:34 AM PDT · 14636 days ago · 2 km deep · 5 km away
28. 1.634 km NW of Benton, CaliforniaThu, Aug 28, 5:53 PM PDT · 14634 days ago · 5 km deep · 97 km away
29. 1.620 km E of Mono City, CaliforniaFri, Aug 29, 3:20 PM PDT · 14634 days ago · 1 km deep · 87 km away
30. 1.721 km E of Mono City, CaliforniaSat, Aug 30, 1:13 AM PDT · 14633 days ago · 1 km deep · 87 km away
31. 1.533 km NW of Benton, CaliforniaSat, Aug 30, 7:46 PM PDT · 14632 days ago · 1 km deep · 98 km away
32. 1.817 km ENE of Mono City, CaliforniaSun, Aug 31, 1:36 PM PDT · 14632 days ago · 1 km deep · 79 km away
33. 2.118 km ENE of Mono City, CaliforniaSun, Aug 31, 7:04 PM PDT · 14631 days ago · 3 km deep · 79 km away
34. 2.017 km ENE of Mono City, CaliforniaMon, Sep 1, 2:12 AM PDT · 14631 days ago · 2 km deep · 79 km away
35. 1.633 km NW of Benton, CaliforniaTue, Sep 2, 9:58 PM PDT · 14629 days ago · 4 km deep · 98 km away
36. 1.718 km ENE of Mono City, CaliforniaWed, Sep 3, 12:47 PM PDT · 14629 days ago · 4 km deep · 79 km away
37. 1.917 km ENE of Mono City, CaliforniaWed, Sep 3, 12:48 PM PDT · 14629 days ago · 2 km deep · 79 km away
38. 1.917 km ENE of Mono City, CaliforniaWed, Sep 3, 3:12 PM PDT · 14629 days ago · 3 km deep · 79 km away
39. 1.910 km NE of Markleeville, CaliforniaFri, Sep 5, 9:45 AM PDT · 14627 days ago · -1 km deep · 17 km away
40. 1.821 km E of Mono City, CaliforniaFri, Sep 5, 6:44 PM PDT · 14626 days ago · 3 km deep · 87 km away
41. 2.39 km E of Buck Meadows, CaliforniaFri, Sep 5, 11:11 PM PDT · 14626 days ago · 29 km deep · 97 km away
42. 1.720 km E of Mono City, CaliforniaSat, Sep 6, 7:40 PM PDT · 14625 days ago · 5 km deep · 87 km away
43. 1.9California-Nevada border regionWed, Sep 10, 6:34 PM PDT · 14621 days ago · 1 km deep · 79 km away
44. 1.912 km SSE of Bear Valley, CaliforniaThu, Sep 11, 6:58 AM PDT · 14621 days ago · 0 km deep · 49 km away
45. 2.25 km NW of Topaz, CaliforniaSun, Sep 14, 9:48 AM PDT · 14618 days ago · 7 km deep · 1 km away
46. 2.021 km E of Mono City, CaliforniaSun, Sep 14, 7:16 PM PDT · 14617 days ago · 4 km deep · 87 km away
47. 1.621 km E of Mono City, CaliforniaSun, Sep 14, 8:03 PM PDT · 14617 days ago · 3 km deep · 87 km away
48. 2.89 km E of Buck Meadows, CaliforniaMon, Sep 15, 11:47 PM PDT · 14616 days ago · 30 km deep · 97 km away
49. 1.820 km E of Mono City, CaliforniaFri, Sep 19, 9:18 PM PDT · 14612 days ago · 0 km deep · 86 km away
50. 2.023 km E of Mono City, CaliforniaFri, Sep 26, 4:45 PM PDT · 14606 days ago · 4 km deep · 88 km away
51. 1.620 km E of Mono City, CaliforniaSat, Sep 27, 12:59 AM PDT · 14605 days ago · 1 km deep · 86 km away
52. 1.620 km E of Mono City, CaliforniaSat, Sep 27, 4:03 AM PDT · 14605 days ago · 9 km deep · 85 km away
53. 1.621 km E of Mono City, CaliforniaSat, Sep 27, 6:51 AM PDT · 14605 days ago · 4 km deep · 87 km away
54. 1.821 km E of Mono City, CaliforniaSat, Sep 27, 6:57 AM PDT · 14605 days ago · 4 km deep · 87 km away
55. 1.821 km E of Mono City, CaliforniaSat, Sep 27, 7:09 AM PDT · 14605 days ago · 2 km deep · 87 km away
56. 1.521 km E of Mono City, CaliforniaSat, Sep 27, 8:39 AM PDT · 14605 days ago · 3 km deep · 87 km away

Before

1. 1.720 km E of Mono City, CaliforniaWed, Jul 30, 12:55 PM PDT · 14664 days ago · 5 km deep · 86 km away
2. 1.720 km E of Mono City, CaliforniaWed, Jul 30, 11:57 AM PDT · 14664 days ago · 3 km deep · 86 km away
3. 1.54 km NW of Topaz, CaliforniaSun, Jul 27, 11:51 PM PDT · 14666 days ago · 7 km deep · 1 km away
4. 2.021 km E of Mono City, CaliforniaFri, Jul 25, 2:29 PM PDT · 14669 days ago · 10 km deep · 86 km away
5. 1.64 km NW of Topaz, CaliforniaThu, Jul 24, 8:33 AM PDT · 14670 days ago · -1 km deep · 2 km away
6. 1.912 km WSW of Coleville, CaliforniaWed, Jul 23, 1:19 AM PDT · 14671 days ago · 4 km deep · 14 km away
7. 3.15 km WNW of Topaz, CaliforniaWed, Jul 23, 12:46 AM PDT · 14671 days ago · 5 km deep · 1 km away
8. 4.35 km SSW of Topaz Lake, NevadaWed, Jul 23, 12:39 AM PDT · 14671 days ago · 3 km deep · 2 km away
9. 2.20 km SW of Mesa Vista, CaliforniaTue, Jul 22, 12:44 PM PDT · 14672 days ago · 2 km deep · 28 km away
10. 2.420 km E of Mono City, CaliforniaFri, Jul 18, 1:07 AM PDT · 14676 days ago · 9 km deep · 86 km away
11. 2.35 km W of Bridgeport, CaliforniaWed, Jul 16, 12:45 PM PDT · 14678 days ago · 10 km deep · 48 km away
12. 2.128 km E of Mono City, CaliforniaFri, Jul 11, 8:03 PM PDT · 14682 days ago · 8 km deep · 89 km away
13. 2.74 km WSW of Topaz Lake, NevadaFri, Jul 11, 3:13 PM PDT · 14683 days ago · 6 km deep · 6 km away
14. 2.1California-Nevada border regionWed, Jul 9, 1:43 AM PDT · 14685 days ago · -1 km deep · 20 km away
15. 2.39 km E of Buck Meadows, CaliforniaFri, Jul 4, 11:30 PM PDT · 14689 days ago · 30 km deep · 97 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc77837. Read Tue, Sep 22, 2026, 11:20 AM UTC.