M1.5 earthquake 3 km SSE of Swall Meadows, California

Magnitude

1.5 (md), micro

Local time

Sun, Apr 21, 1985, 7:46 AM PST

UTC

1985-04-21 15:46:49 UTC

Depth

9.4 km (5.8 mi), shallow

Epicenter

37.477° N, 118.620° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.2 km horizontally, 0.6 km in depth

Magnitude uncertainty

±0.19

Depth from

From location

Station coverage gap

49°

Stations used

24

• West Bishop, CaliforniaPopulation 2,607. Forecast19 kmNW
• Sanger, CaliforniaPopulation 24,950. Forecast119 kmNE
• Clovis, CaliforniaPopulation 104,180. Forecast120 kmNE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast382 kmN

After

1. 1.74 km SW of Aspen Springs, CaliforniaSun, Apr 21, 10:07 PM PST · 15136 days ago · 3 km deep · 13 km away
2. 1.64 km NNW of Round Valley, CaliforniaMon, Apr 22, 4:17 AM PST · 15136 days ago · 7 km deep · 3 km away
3. 2.23 km NNE of Round Valley, CaliforniaMon, Apr 22, 4:40 AM PST · 15136 days ago · 10 km deep · 6 km away
4. 2.911 km E of Mammoth Lakes, CaliforniaMon, Apr 22, 6:16 AM PST · 15136 days ago · 5 km deep · 27 km away
5. 1.91 km NE of Round Valley, CaliforniaMon, Apr 22, 8:59 AM PST · 15136 days ago · 10 km deep · 7 km away
6. 2.14 km NW of Round Valley, CaliforniaMon, Apr 22, 2:28 PM PST · 15135 days ago · 6 km deep · 3 km away
7. 1.64 km SSW of Aspen Springs, CaliforniaMon, Apr 22, 5:27 PM PST · 15135 days ago · 4 km deep · 11 km away
8. 2.37 km NW of Aspen Springs, CaliforniaTue, Apr 23, 1:32 PM PST · 15134 days ago · -2 km deep · 19 km away
9. 2.36 km NW of Aspen Springs, CaliforniaTue, Apr 23, 3:37 PM PST · 15134 days ago · 0 km deep · 18 km away
10. 1.54 km N of Round Valley, CaliforniaTue, Apr 23, 3:44 PM PST · 15134 days ago · 7 km deep · 3 km away
11. 1.55 km NW of Round Valley, CaliforniaTue, Apr 23, 4:18 PM PST · 15134 days ago · 7 km deep · 2 km away
12. 2.011 km E of Mammoth Lakes, CaliforniaTue, Apr 23, 8:52 PM PST · 15134 days ago · 5 km deep · 27 km away
13. 1.73 km NNW of Mesa, CaliforniaWed, Apr 24, 4:19 AM PST · 15134 days ago · 10 km deep · 6 km away
14. 1.82 km W of Swall Meadows, CaliforniaThu, Apr 25, 10:43 AM PST · 15133 days ago · 10 km deep · 6 km away
15. 1.64 km WNW of Round Valley, CaliforniaThu, Apr 25, 7:58 PM PST · 15132 days ago · 4 km deep · 5 km away
16. 4.14 km WNW of Round Valley, CaliforniaThu, Apr 25, 8:03 PM PST · 15132 days ago · 4 km deep · 5 km away
17. 1.54 km WNW of Round Valley, CaliforniaThu, Apr 25, 8:14 PM PST · 15132 days ago · 4 km deep · 5 km away
18. 2.64 km WNW of Round Valley, CaliforniaThu, Apr 25, 8:15 PM PST · 15132 days ago · 3 km deep · 5 km away
19. 2.14 km WNW of Round Valley, CaliforniaThu, Apr 25, 9:32 PM PST · 15132 days ago · 4 km deep · 5 km away
20. 2.14 km WNW of Round Valley, CaliforniaThu, Apr 25, 10:03 PM PST · 15132 days ago · 4 km deep · 5 km away
21. 2.94 km WNW of Round Valley, CaliforniaThu, Apr 25, 10:33 PM PST · 15132 days ago · 4 km deep · 5 km away
22. 1.84 km WNW of Round Valley, CaliforniaThu, Apr 25, 10:47 PM PST · 15132 days ago · 4 km deep · 5 km away
23. 2.44 km WNW of Round Valley, CaliforniaFri, Apr 26, 2:58 AM PST · 15132 days ago · 4 km deep · 5 km away
24. 1.74 km WNW of Round Valley, CaliforniaFri, Apr 26, 11:15 AM PST · 15132 days ago · 4 km deep · 5 km away
25. 2.94 km WNW of Round Valley, CaliforniaFri, Apr 26, 12:15 PM PST · 15132 days ago · 4 km deep · 5 km away
26. 2.24 km WNW of Round Valley, CaliforniaFri, Apr 26, 8:07 PM PST · 15131 days ago · 4 km deep · 5 km away
27. 1.94 km WNW of Round Valley, CaliforniaFri, Apr 26, 10:44 PM PST · 15131 days ago · 4 km deep · 5 km away
28. 2.115 km WSW of Aspen Springs, CaliforniaSat, Apr 27, 5:48 AM PST · 15131 days ago · 5 km deep · 22 km away
29. 1.94 km WNW of Round Valley, CaliforniaSat, Apr 27, 12:10 PM PST · 15131 days ago · 4 km deep · 5 km away
30. 2.228 km NW of Benton, CaliforniaSat, Apr 27, 3:18 PM PST · 15130 days ago · 5 km deep · 61 km away
31. 1.64 km WNW of Round Valley, CaliforniaSat, Apr 27, 6:29 PM PST · 15130 days ago · 4 km deep · 5 km away
32. 2.75 km NNW of Round Valley, CaliforniaSun, Apr 28, 12:42 AM PST · 15130 days ago · 6 km deep · 2 km away
33. 1.64 km WNW of Round Valley, CaliforniaSun, Apr 28, 1:04 AM PST · 15130 days ago · 4 km deep · 5 km away
34. 2.0California-Nevada border regionSun, Apr 28, 4:15 AM PDT · 15130 days ago · 9 km deep · 33 km away
35. 2.53 km SSE of Swall Meadows, CaliforniaSun, Apr 28, 7:48 AM PDT · 15130 days ago · 8 km deep · 1 km away
36. 1.60 km NNE of Round Valley, CaliforniaMon, Apr 29, 1:12 AM PDT · 15129 days ago · 4 km deep · 7 km away
37. 1.74 km WNW of Benton, CaliforniaMon, Apr 29, 2:22 AM PDT · 15129 days ago · 4 km deep · 41 km away
38. 2.44 km WNW of Round Valley, CaliforniaMon, Apr 29, 4:09 PM PDT · 15128 days ago · 4 km deep · 5 km away
39. 2.34 km WNW of Round Valley, CaliforniaMon, Apr 29, 4:11 PM PDT · 15128 days ago · 4 km deep · 5 km away
40. 2.1California-Nevada border regionMon, Apr 29, 8:09 PM PDT · 15128 days ago · 6 km deep · 17 km away
41. 2.015 km WSW of Aspen Springs, CaliforniaTue, Apr 30, 8:52 AM PDT · 15128 days ago · 4 km deep · 22 km away
42. 2.14 km SSE of Swall Meadows, CaliforniaTue, Apr 30, 10:48 AM PDT · 15128 days ago · 7 km deep · 1 km away
43. 1.610 km W of Aspen Springs, CaliforniaWed, May 1, 3:05 AM PDT · 15127 days ago · 6 km deep · 22 km away
44. 1.714 km WSW of Aspen Springs, CaliforniaWed, May 1, 7:42 AM PDT · 15127 days ago · 4 km deep · 22 km away
45. 1.710 km W of Aspen Springs, CaliforniaWed, May 1, 11:22 AM PDT · 15127 days ago · 4 km deep · 20 km away
46. 1.510 km W of Aspen Springs, CaliforniaWed, May 1, 11:39 AM PDT · 15127 days ago · 3 km deep · 20 km away
47. 1.74 km SSE of Swall Meadows, CaliforniaWed, May 1, 12:01 PM PDT · 15127 days ago · 6 km deep · 1 km away
48. 2.314 km WSW of Aspen Springs, CaliforniaWed, May 1, 6:54 PM PDT · 15126 days ago · 4 km deep · 22 km away
49. 1.63 km ESE of Mammoth Lakes, CaliforniaThu, May 2, 1:53 AM PDT · 15126 days ago · 2 km deep · 33 km away
50. 1.68 km WSW of Aspen Springs, CaliforniaThu, May 2, 10:01 AM PDT · 15126 days ago · 12 km deep · 17 km away
51. 2.93 km SSE of Swall Meadows, CaliforniaThu, May 2, 1:47 PM PDT · 15125 days ago · 10 km deep · 1 km away
52. 2.18 km N of Mesa, CaliforniaThu, May 2, 6:09 PM PDT · 15125 days ago · 3 km deep · 7 km away
53. 1.85 km SSE of Yosemite Valley, CaliforniaThu, May 2, 6:48 PM PDT · 15125 days ago · 3 km deep · 85 km away
54. 2.82 km SSE of Round Valley, CaliforniaThu, May 2, 9:35 PM PDT · 15125 days ago · 5 km deep · 9 km away
55. 1.911 km NW of Aspen Springs, CaliforniaFri, May 3, 3:40 AM PDT · 15125 days ago · 6 km deep · 23 km away
56. 1.99 km WSW of Aspen Springs, CaliforniaFri, May 3, 5:47 AM PDT · 15125 days ago · 4 km deep · 18 km away
57. 1.68 km WSW of Aspen Springs, CaliforniaFri, May 3, 5:48 AM PDT · 15125 days ago · 4 km deep · 18 km away
58. 4.74 km SE of Swall Meadows, CaliforniaFri, May 3, 8:22 PM PDT · 15124 days ago · 10 km deep · 1 km away
59. 2.35 km W of Swall Meadows, CaliforniaFri, May 3, 8:25 PM PDT · 15124 days ago · 8 km deep · 8 km away
60. 2.34 km SE of Swall Meadows, CaliforniaFri, May 3, 8:27 PM PDT · 15124 days ago · 10 km deep · 1 km away

The first 60 of at least 199.

Before

1. 2.12 km NNW of Mesa, CaliforniaSun, Apr 21, 6:59 AM PST · 15137 days ago · 3 km deep · 7 km away
2. 2.111 km W of Aspen Springs, CaliforniaSat, Apr 20, 3:38 AM PST · 15138 days ago · 7 km deep · 22 km away
3. 3.02 km WNW of Round Valley, CaliforniaSat, Apr 20, 1:33 AM PST · 15138 days ago · 6 km deep · 6 km away
4. 2.610 km W of Aspen Springs, CaliforniaFri, Apr 19, 11:52 PM PST · 15138 days ago · 3 km deep · 21 km away
5. 1.69 km WSW of Aspen Springs, CaliforniaFri, Apr 19, 5:00 PM PST · 15138 days ago · 11 km deep · 18 km away
6. 1.87 km E of Swall Meadows, CaliforniaFri, Apr 19, 12:10 PM PST · 15139 days ago · 5 km deep · 7 km away
7. 1.85 km SW of Aspen Springs, CaliforniaFri, Apr 19, 4:58 AM PST · 15139 days ago · 5 km deep · 13 km away
8. 2.35 km SW of Aspen Springs, CaliforniaFri, Apr 19, 3:36 AM PST · 15139 days ago · 5 km deep · 13 km away
9. 1.64 km NW of Round Valley, CaliforniaThu, Apr 18, 7:03 AM PST · 15140 days ago · 5 km deep · 3 km away
10. 1.74 km SSE of Swall Meadows, CaliforniaWed, Apr 17, 9:34 PM PST · 15140 days ago · 5 km deep · 1 km away
11. 2.45 km SSE of Swall Meadows, CaliforniaWed, Apr 17, 9:34 PM PST · 15140 days ago · 6 km deep · 1 km away
12. 1.622 km E of Bishop, CaliforniaWed, Apr 17, 7:06 PM PST · 15140 days ago · 11 km deep · 45 km away
13. 2.43 km NE of Round Valley, CaliforniaWed, Apr 17, 5:54 PM PST · 15140 days ago · 11 km deep · 6 km away
14. 1.64 km N of Round Valley, CaliforniaWed, Apr 17, 11:53 AM PST · 15141 days ago · 10 km deep · 4 km away
15. 1.76 km WSW of Aspen Springs, CAWed, Apr 17, 10:25 AM PST · 15141 days ago · 3 km deep · 15 km away
16. 1.511 km E of Mammoth Lakes, CaliforniaWed, Apr 17, 3:32 AM PST · 15141 days ago · 5 km deep · 27 km away
17. 1.611 km ESE of Mammoth Lakes, CaliforniaWed, Apr 17, 12:32 AM PST · 15141 days ago · 6 km deep · 26 km away
18. 1.53 km SSE of Swall Meadows, CaliforniaTue, Apr 16, 2:33 PM PST · 15141 days ago · 8 km deep · 1 km away
19. 2.46 km WSW of Aspen Springs, CaliforniaTue, Apr 16, 5:38 AM PST · 15142 days ago · 3 km deep · 15 km away
20. 1.76 km SSW of Swall Meadows, CaliforniaTue, Apr 16, 3:47 AM PST · 15142 days ago · 11 km deep · 5 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc46449. Read Wed, Sep 30, 2026, 8:02 AM UTC.