M1.8 earthquake 10 km S of Bootjack, California

Magnitude

1.8 (md), micro

Local time

Fri, Apr 27, 1984, 9:27 PM PST

UTC

1984-04-28 05:27:03 UTC

Depth

16.3 km (10.1 mi), shallow

Epicenter

37.367° N, 119.885° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.6 km horizontally, 1.7 km in depth

Magnitude uncertainty

±0.16

Depth from

From location

Station coverage gap

181°, poorly surrounded by stations

Stations used

4

• Bootjack, CaliforniaPopulation 960. Forecast11 kmS
• Chowchilla, CaliforniaPopulation 18,510. Forecast43 kmNE
• Clovis, CaliforniaPopulation 104,180. Forecast62 kmNNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast397 kmNNW

After

1. 1.76 km N of Tuttle, CaliforniaFri, Apr 27, 10:18 PM PST · 15493 days ago · 5 km deep · 45 km away
2. 1.616 km SW of Aspen Springs, CaliforniaSat, Apr 28, 12:17 AM PST · 15493 days ago · 2 km deep · 90 km away
3. 2.617 km SW of Aspen Springs, CaliforniaSat, Apr 28, 12:18 AM PST · 15493 days ago · 2 km deep · 90 km away
4. 4.77 km ESE of Mammoth Lakes, CaliforniaSat, Apr 28, 2:48 PM PST · 15492 days ago · 2 km deep · 93 km away
5. 1.98 km ESE of Mammoth Lakes, CaliforniaSat, Apr 28, 2:51 PM PST · 15492 days ago · 2 km deep · 93 km away
6. 1.88 km ESE of Mammoth Lakes, CaliforniaSat, Apr 28, 2:52 PM PST · 15492 days ago · 2 km deep · 93 km away
7. 2.18 km ESE of Mammoth Lakes, CaliforniaSat, Apr 28, 2:53 PM PST · 15492 days ago · 2 km deep · 93 km away
8. 2.09 km E of Mammoth Lakes, CaliforniaSat, Apr 28, 2:54 PM PST · 15492 days ago · 3 km deep · 95 km away
9. 2.18 km ESE of Mammoth Lakes, CaliforniaSat, Apr 28, 2:59 PM PST · 15492 days ago · 2 km deep · 93 km away
10. 1.99 km E of Mammoth Lakes, CaliforniaSat, Apr 28, 3:02 PM PST · 15492 days ago · 3 km deep · 95 km away
11. 2.17 km ESE of Mammoth Lakes, CaliforniaSat, Apr 28, 3:29 PM PST · 15492 days ago · 1 km deep · 92 km away
12. 1.67 km WNW of Aspen Springs, CaliforniaSat, Apr 28, 3:49 PM PST · 15492 days ago · 2 km deep · 98 km away
13. 1.67 km ESE of Mammoth Lakes, CaliforniaSat, Apr 28, 3:57 PM PST · 15492 days ago · 3 km deep · 93 km away
14. 2.17 km ESE of Mammoth Lakes, CaliforniaSat, Apr 28, 4:06 PM PST · 15492 days ago · 3 km deep · 92 km away
15. 3.38 km ESE of Mammoth Lakes, CaliforniaSat, Apr 28, 4:12 PM PST · 15492 days ago · 2 km deep · 93 km away
16. 2.78 km ESE of Mammoth Lakes, CaliforniaSat, Apr 28, 4:12 PM PST · 15492 days ago · 2 km deep · 93 km away
17. 2.67 km ESE of Mammoth Lakes, CaliforniaSat, Apr 28, 4:15 PM PST · 15492 days ago · 3 km deep · 92 km away
18. 2.97 km ESE of Mammoth Lakes, CASat, Apr 28, 4:19 PM PST · 15492 days ago · 3 km deep · 92 km away
19. 2.86 km ESE of Mammoth Lakes, CaliforniaSat, Apr 28, 4:20 PM PST · 15492 days ago · 3 km deep · 92 km away
20. 1.910 km E of Mammoth Lakes, CaliforniaSat, Apr 28, 4:25 PM PST · 15492 days ago · -1 km deep · 96 km away
21. 1.67 km E of Mammoth Lakes, CaliforniaSat, Apr 28, 4:37 PM PST · 15492 days ago · 2 km deep · 93 km away
22. 2.07 km ESE of Mammoth Lakes, CaliforniaSat, Apr 28, 4:37 PM PST · 15492 days ago · 3 km deep · 92 km away
23. 3.77 km ESE of Mammoth Lakes, CaliforniaSat, Apr 28, 4:50 PM PST · 15492 days ago · 3 km deep · 92 km away
24. 2.97 km ESE of Mammoth Lakes, CaliforniaSat, Apr 28, 4:52 PM PST · 15492 days ago · 3 km deep · 92 km away
25. 3.16 km ESE of Mammoth Lakes, CaliforniaSat, Apr 28, 4:54 PM PST · 15492 days ago · 3 km deep · 92 km away
26. 2.06 km ESE of Mammoth Lakes, CaliforniaSat, Apr 28, 4:55 PM PST · 15492 days ago · 2 km deep · 92 km away
27. 2.37 km ESE of Mammoth Lakes, CaliforniaSat, Apr 28, 4:55 PM PST · 15492 days ago · 3 km deep · 92 km away
28. 2.67 km ESE of Mammoth Lakes, CaliforniaSat, Apr 28, 4:56 PM PST · 15492 days ago · 3 km deep · 92 km away
29. 2.710 km E of Mammoth Lakes, CaliforniaSat, Apr 28, 4:56 PM PST · 15492 days ago · 6 km deep · 96 km away
30. 1.6California-Nevada border regionSat, Apr 28, 4:58 PM PST · 15492 days ago · 3 km deep · 92 km away
31. 2.76 km ESE of Mammoth Lakes, CaliforniaSat, Apr 28, 5:18 PM PST · 15492 days ago · 3 km deep · 92 km away
32. 2.17 km ESE of Mammoth Lakes, CaliforniaSat, Apr 28, 5:43 PM PST · 15492 days ago · 3 km deep · 93 km away
33. 2.07 km ESE of Mammoth Lakes, CaliforniaSat, Apr 28, 6:48 PM PST · 15492 days ago · 1 km deep · 92 km away
34. 2.77 km ESE of Mammoth Lakes, CaliforniaSat, Apr 28, 7:53 PM PST · 15492 days ago · 1 km deep · 93 km away
35. 2.98 km ESE of Mammoth Lakes, CaliforniaSun, Apr 29, 6:20 AM PDT · 15492 days ago · 2 km deep · 93 km away
36. 1.611 km ESE of Mammoth Lakes, CaliforniaSun, Apr 29, 6:41 AM PDT · 15492 days ago · 3 km deep · 96 km away
37. 1.611 km NW of Aspen Springs, CaliforniaSun, Apr 29, 10:06 AM PDT · 15492 days ago · 2 km deep · 98 km away
38. 1.519 km ESE of Yosemite Valley, CaliforniaSun, Apr 29, 11:07 AM PDT · 15492 days ago · 3 km deep · 53 km away
39. 1.56 km ESE of Mammoth Lakes, CaliforniaSun, Apr 29, 7:10 PM PDT · 15491 days ago · 0 km deep · 92 km away
40. 1.88 km E of Mammoth Lakes, CaliforniaSun, Apr 29, 9:02 PM PDT · 15491 days ago · 3 km deep · 94 km away
41. 1.67 km ESE of Mammoth Lakes, CaliforniaMon, Apr 30, 3:21 AM PDT · 15491 days ago · 3 km deep · 93 km away
42. 1.67 km ESE of Mammoth Lakes, CaliforniaMon, Apr 30, 3:21 AM PDT · 15491 days ago · 3 km deep · 92 km away
43. 1.77 km ESE of Mammoth Lakes, CaliforniaMon, Apr 30, 3:22 AM PDT · 15491 days ago · 3 km deep · 93 km away
44. 1.511 km WNW of Aspen Springs, CaliforniaMon, Apr 30, 5:22 AM PDT · 15491 days ago · 9 km deep · 96 km away
45. 2.09 km W of Aspen Springs, CaliforniaMon, Apr 30, 9:14 AM PDT · 15491 days ago · 7 km deep · 96 km away
46. 1.66 km E of Mammoth Lakes, CaliforniaMon, Apr 30, 2:48 PM PDT · 15490 days ago · 3 km deep · 92 km away
47. 2.27 km ESE of Mammoth Lakes, CaliforniaMon, Apr 30, 7:36 PM PDT · 15490 days ago · 3 km deep · 93 km away
48. 2.58 km ESE of Mammoth Lakes, CaliforniaMon, Apr 30, 8:05 PM PDT · 15490 days ago · 3 km deep · 93 km away
49. 1.88 km ESE of Mammoth Lakes, CaliforniaMon, Apr 30, 8:09 PM PDT · 15490 days ago · 3 km deep · 93 km away
50. 1.68 km ESE of Mammoth Lakes, CaliforniaTue, May 1, 12:39 AM PDT · 15490 days ago · 0 km deep · 93 km away
51. 2.47 km ESE of Mammoth Lakes, CaliforniaTue, May 1, 12:43 AM PDT · 15490 days ago · 1 km deep · 92 km away
52. 1.97 km ESE of Mammoth Lakes, CaliforniaTue, May 1, 12:47 AM PDT · 15490 days ago · 0 km deep · 93 km away
53. 1.99 km E of Mammoth Lakes, CaliforniaTue, May 1, 1:21 AM PDT · 15490 days ago · 3 km deep · 95 km away
54. 3.013 km SW of Aspen Springs, CaliforniaTue, May 1, 2:50 AM PDT · 15490 days ago · 7 km deep · 94 km away
55. 1.77 km ESE of Mammoth Lakes, CaliforniaTue, May 1, 7:24 AM PDT · 15490 days ago · 3 km deep · 92 km away
56. 2.05 km E of Mammoth Lakes, CaliforniaTue, May 1, 7:42 AM PDT · 15490 days ago · 3 km deep · 92 km away
57. 1.83 km E of Mammoth Lakes, CaliforniaTue, May 1, 7:43 AM PDT · 15490 days ago · 6 km deep · 90 km away
58. 1.85 km ENE of Mammoth Lakes, CaliforniaTue, May 1, 7:53 AM PDT · 15490 days ago · 6 km deep · 92 km away
59. 1.89 km NW of Aspen Springs, CaliforniaTue, May 1, 9:56 PM PDT · 15489 days ago · 1 km deep · 99 km away
60. 2.28 km ESE of Mammoth Lakes, CaliforniaWed, May 2, 4:33 PM PDT · 15488 days ago · 3 km deep · 93 km away

The first 60 of 180.

Before

1. 2.121 km SW of Aspen Springs, CaliforniaThu, Apr 26, 7:24 PM PST · 15494 days ago · 0 km deep · 88 km away
2. 1.613 km SE of Catheys Valley, CaliforniaWed, Apr 25, 5:57 AM PST · 15496 days ago · 2 km deep · 11 km away
3. 1.913 km SW of Aspen Springs, CaliforniaTue, Apr 24, 1:43 PM PST · 15496 days ago · 2 km deep · 94 km away
4. 1.813 km SW of Aspen Springs, CaliforniaTue, Apr 24, 1:43 PM PST · 15496 days ago · 2 km deep · 94 km away
5. 1.87 km NNE of Buck Meadows, CaliforniaTue, Apr 24, 9:58 AM PST · 15497 days ago · 30 km deep · 58 km away
6. 2.421 km ESE of Yosemite Valley, CaliforniaSun, Apr 22, 5:01 AM PST · 15499 days ago · 14 km deep · 55 km away
7. 1.619 km ESE of Yosemite Valley, CaliforniaSun, Apr 22, 5:00 AM PST · 15499 days ago · 5 km deep · 55 km away
8. 3.011 km W of Aspen Springs, CaliforniaSun, Apr 22, 12:29 AM PST · 15499 days ago · 8 km deep · 94 km away
9. 1.811 km SE of Mammoth Lakes, CaliforniaSat, Apr 21, 9:11 PM PST · 15499 days ago · 4 km deep · 93 km away
10. 2.012 km W of Aspen Springs, CaliforniaSat, Apr 21, 5:54 AM PST · 15500 days ago · 7 km deep · 94 km away
11. 2.410 km WSW of Aspen Springs, CaliforniaFri, Apr 20, 7:36 AM PST · 15501 days ago · 8 km deep · 95 km away
12. 1.78 km WNW of Aspen Springs, CaliforniaThu, Apr 19, 3:06 AM PST · 15502 days ago · 3 km deep · 100 km away
13. 1.66 km ESE of Mammoth Lakes, CaliforniaWed, Apr 18, 12:13 AM PST · 15503 days ago · 3 km deep · 91 km away
14. 1.68 km ENE of Fish Camp, CaliforniaTue, Apr 17, 8:30 PM PST · 15503 days ago · 4 km deep · 33 km away
15. 1.75 km S of Mammoth Lakes, CaliforniaTue, Apr 17, 2:24 AM PST · 15504 days ago · -1 km deep · 85 km away
16. 2.515 km SW of Aspen Springs, CaliforniaMon, Apr 16, 3:14 PM PST · 15504 days ago · 7 km deep · 95 km away
17. 1.68 km ESE of Mammoth Lakes, CaliforniaSun, Apr 15, 12:05 PM PST · 15505 days ago · 3 km deep · 93 km away
18. 2.54 km SE of Le Grand, CaliforniaFri, Apr 13, 8:26 PM PST · 15507 days ago · 0 km deep · 35 km away
19. 2.016 km NE of Buck Meadows, CaliforniaFri, Apr 13, 8:06 PM PST · 15507 days ago · 39 km deep · 62 km away
20. 2.14 km SSE of Buck Meadows, CaliforniaFri, Apr 13, 8:00 PM PST · 15507 days ago · 4 km deep · 48 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc16845. Read Mon, Sep 28, 2026, 5:58 AM UTC.