M2.1 earthquake 5 km SW of Volcano, Hawaii

Magnitude

2.1 (ml), micro

Local time

Fri, Aug 21, 1987, 3:58 PM HST

UTC

1987-08-22 01:58:36 UTC

Depth

1.7 km (1.1 mi), shallow

Epicenter

19.399° N, 155.265° W

Region

Hawaii

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.3 km horizontally, 0.2 km in depth

Magnitude uncertainty

±0.10

Depth from

From location

Station coverage gap

79°

Stations used

18

• Volcano, HawaiiPopulation 2,575. Forecast6 kmSW
• Hawaiian Paradise Park, HawaiiPopulation 11,404. Forecast37 kmSW
• Honolulu, HawaiiPopulation 350,964. Forecast344 kmSE

After

1. 2.112 km S of Volcano, HawaiiFri, Aug 21, 6:12 PM HST · 14284 days ago · 7 km deep · 9 km away
2. 1.715 km S of Fern Forest, HawaiiFri, Aug 21, 6:41 PM HST · 14284 days ago · 6 km deep · 16 km away
3. 2.84 km SW of Volcano, HawaiiSat, Aug 22, 4:42 AM HST · 14283 days ago · 14 km deep · 2 km away
4. 2.06 km SW of Volcano, HawaiiSat, Aug 22, 6:41 AM HST · 14283 days ago · 0 km deep · 2 km away
5. 2.513 km S of Volcano, HawaiiSat, Aug 22, 1:49 PM HST · 14283 days ago · 7 km deep · 9 km away
6. 2.05 km SSW of Volcano, HawaiiSat, Aug 22, 2:41 PM HST · 14283 days ago · 2 km deep · 0 km away
7. 2.024 km N of P?hala, HawaiiSat, Aug 22, 7:06 PM HST · 14283 days ago · 7 km deep · 24 km away
8. 2.05 km SSW of Volcano, HawaiiSat, Aug 22, 11:14 PM HST · 14283 days ago · 2 km deep · 0 km away
9. 1.515 km NW of Kalaoa, HawaiiSun, Aug 23, 12:11 AM HST · 14283 days ago · 0 km deep · 99 km away
10. 1.818 km N of P?hala, HawaiiSun, Aug 23, 9:20 AM HST · 14282 days ago · 7 km deep · 25 km away
11. 1.65 km SSW of Volcano, HawaiiSun, Aug 23, 10:47 AM HST · 14282 days ago · 2 km deep · 1 km away
12. 1.82 km NNE of Volcano, HawaiiSun, Aug 23, 12:03 PM HST · 14282 days ago · 9 km deep · 8 km away
13. 1.821 km N of P?hala, HawaiiSun, Aug 23, 2:40 PM HST · 14282 days ago · 8 km deep · 19 km away
14. 1.615 km N of P?hala, HawaiiSun, Aug 23, 2:55 PM HST · 14282 days ago · 8 km deep · 25 km away
15. 2.313 km S of Volcano, HawaiiMon, Aug 24, 3:16 AM HST · 14282 days ago · 7 km deep · 10 km away
16. 1.715 km S of Fern Forest, HawaiiMon, Aug 24, 3:43 AM HST · 14281 days ago · 7 km deep · 17 km away
17. 1.812 km SSE of Fern Forest, HawaiiMon, Aug 24, 7:52 AM HST · 14281 days ago · 6 km deep · 20 km away
18. 2.110 km N of Wai‘?hinu, HawaiiMon, Aug 24, 11:55 AM HST · 14281 days ago · 6 km deep · 46 km away
19. 1.926 km SSE of Volcano, HawaiiMon, Aug 24, 12:27 PM HST · 14281 days ago · 15 km deep · 24 km away
20. 1.914 km SSE of Fern Forest, HawaiiTue, Aug 25, 5:23 AM HST · 14280 days ago · 8 km deep · 19 km away
21. 1.922 km WNW of Volcano, HawaiiTue, Aug 25, 10:02 PM HST · 14280 days ago · 4 km deep · 21 km away
22. 1.915 km S of Fern Forest, HawaiiWed, Aug 26, 2:03 AM HST · 14280 days ago · 8 km deep · 18 km away
23. 1.824 km W of Volcano, HawaiiWed, Aug 26, 9:32 AM HST · 14279 days ago · 7 km deep · 22 km away
24. 2.211 km SSE of Volcano, HawaiiWed, Aug 26, 12:19 PM HST · 14279 days ago · 7 km deep · 9 km away
25. 1.814 km SSE of Volcano, HawaiiWed, Aug 26, 2:36 PM HST · 14279 days ago · 7 km deep · 12 km away
26. 1.616 km S of Fern Forest, HawaiiWed, Aug 26, 11:37 PM HST · 14279 days ago · 7 km deep · 16 km away
27. 1.914 km S of Volcano, HawaiiThu, Aug 27, 2:56 PM HST · 14278 days ago · 7 km deep · 10 km away
28. 1.93 km ENE of Leilani Estates, HawaiiFri, Aug 28, 3:10 PM HST · 14277 days ago · 2 km deep · 41 km away
29. 1.93 km ENE of Leilani Estates, HawaiiFri, Aug 28, 3:14 PM HST · 14277 days ago · 0 km deep · 41 km away
30. 1.922 km W of Volcano, HawaiiFri, Aug 28, 5:33 PM HST · 14277 days ago · 4 km deep · 21 km away
31. 1.86 km SSW of Volcano, HawaiiFri, Aug 28, 5:40 PM HST · 14277 days ago · 2 km deep · 1 km away
32. 2.117 km SE of Fern Forest, HawaiiMon, Aug 31, 1:39 AM HST · 14275 days ago · 8 km deep · 25 km away
33. 1.714 km S of Volcano, HawaiiMon, Aug 31, 2:30 AM HST · 14275 days ago · 9 km deep · 9 km away
34. 1.95 km SSW of Volcano, HawaiiMon, Aug 31, 4:57 AM HST · 14274 days ago · 2 km deep · 1 km away
35. 1.920 km SSW of Leilani Estates, HawaiiMon, Aug 31, 5:24 AM HST · 14274 days ago · 39 km deep · 31 km away
36. 1.815 km S of Volcano, HawaiiMon, Aug 31, 7:10 AM HST · 14274 days ago · 9 km deep · 12 km away
37. 1.822 km N of P?hala, HawaiiMon, Aug 31, 9:41 AM HST · 14274 days ago · 7 km deep · 24 km away
38. 1.915 km S of Fern Forest, HawaiiTue, Sep 1, 2:38 PM HST · 14273 days ago · 7 km deep · 16 km away
39. 1.54 km SSE of Leilani Estates, HawaiiTue, Sep 1, 3:56 PM HST · 14273 days ago · 7 km deep · 37 km away
40. 1.713 km SSE of Volcano, HawaiiTue, Sep 1, 10:16 PM HST · 14273 days ago · 7 km deep · 11 km away
41. 2.439 km ESE of Naalehu, HawaiiWed, Sep 2, 2:34 AM HST · 14273 days ago · 15 km deep · 52 km away
42. 1.818 km NNE of P?hala, HawaiiWed, Sep 2, 3:54 AM HST · 14272 days ago · 12 km deep · 17 km away
43. 1.716 km SE of Fern Forest, HawaiiWed, Sep 2, 11:01 AM HST · 14272 days ago · 7 km deep · 25 km away
44. 2.18 km ESE of Waimea, HawaiiWed, Sep 2, 10:29 PM HST · 14272 days ago · 3 km deep · 75 km away
45. 1.912 km SSE of Fern Forest, HawaiiThu, Sep 3, 12:23 AM HST · 14272 days ago · 8 km deep · 20 km away
46. 2.023 km N of P?hala, HawaiiThu, Sep 3, 8:32 AM HST · 14271 days ago · 8 km deep · 25 km away
47. 1.94 km ENE of P?hala, HawaiiThu, Sep 3, 4:18 PM HST · 14271 days ago · 7 km deep · 27 km away
48. 2.024 km W of Volcano, HawaiiThu, Sep 3, 6:48 PM HST · 14271 days ago · 6 km deep · 22 km away
49. 2.51 km E of P?hala, HawaiiFri, Sep 4, 2:22 AM HST · 14271 days ago · 6 km deep · 30 km away
50. 1.713 km S of Volcano, HawaiiFri, Sep 4, 3:39 AM HST · 14270 days ago · 5 km deep · 10 km away
51. 1.99 km SW of Leilani Estates, HawaiiSat, Sep 5, 4:06 AM HST · 14269 days ago · 6 km deep · 30 km away
52. 2.411 km S of Volcano, HawaiiSat, Sep 5, 6:43 AM HST · 14269 days ago · 7 km deep · 8 km away
53. 1.712 km S of Volcano, HawaiiSat, Sep 5, 10:50 AM HST · 14269 days ago · 6 km deep · 9 km away
54. 1.818 km N of P?hala, HawaiiSun, Sep 6, 5:42 AM HST · 14268 days ago · 4 km deep · 22 km away
55. 1.69 km NE of P?hala, HawaiiSun, Sep 6, 10:35 AM HST · 14268 days ago · 10 km deep · 22 km away
56. 2.24 km ESE of P?hala, HawaiiSun, Sep 6, 2:32 PM HST · 14268 days ago · 43 km deep · 29 km away
57. 1.74 km SW of Volcano, HawaiiSun, Sep 6, 4:48 PM HST · 14268 days ago · 14 km deep · 2 km away
58. 2.513 km N of P?hala, HawaiiSun, Sep 6, 5:21 PM HST · 14268 days ago · 9 km deep · 26 km away
59. 1.925 km N of P?hala, HawaiiMon, Sep 7, 12:29 AM HST · 14268 days ago · 7 km deep · 24 km away
60. 1.610 km N of P?hala, HawaiiMon, Sep 7, 8:27 AM HST · 14267 days ago · 8 km deep · 27 km away

The first 60 of 194.

Before

1. 2.63 km ESE of Leilani Estates, HawaiiThu, Aug 20, 2:32 PM HST · 14285 days ago · 8 km deep · 40 km away
2. 2.027 km N of P?hala, HawaiiThu, Aug 20, 7:49 AM HST · 14285 days ago · 7 km deep · 25 km away
3. 1.915 km S of Pa‘auilo, HawaiiThu, Aug 20, 6:30 AM HST · 14285 days ago · 10 km deep · 57 km away
4. 1.8Island of Hawaii, HawaiiThu, Aug 20, 6:09 AM HST · 14285 days ago · 9 km deep · 54 km away
5. 1.89 km SSE of Fern Forest, HawaiiWed, Aug 19, 11:22 PM HST · 14286 days ago · -1 km deep · 17 km away
6. 3.07 km NE of Waimea, HawaiiWed, Aug 19, 3:34 PM HST · 14286 days ago · 25 km deep · 84 km away
7. 1.89 km WSW of Volcano, HawaiiWed, Aug 19, 5:26 AM HST · 14286 days ago · 4 km deep · 7 km away
8. 1.615 km SSE of Fern Forest, HawaiiWed, Aug 19, 2:49 AM HST · 14287 days ago · 7 km deep · 19 km away
9. 2.611 km WSW of Volcano, HawaiiWed, Aug 19, 12:03 AM HST · 14287 days ago · 7 km deep · 7 km away
10. 2.19 km NNW of Volcano, HawaiiTue, Aug 18, 2:13 PM HST · 14287 days ago · 24 km deep · 14 km away
11. 2.035 km SE of Naalehu, HawaiiTue, Aug 18, 10:29 AM HST · 14287 days ago · 16 km deep · 63 km away
12. 2.113 km SSE of Fern Forest, HawaiiTue, Aug 18, 6:53 AM HST · 14287 days ago · 7 km deep · 21 km away
13. 1.99 km NNW of P?hala, HawaiiMon, Aug 17, 5:07 PM HST · 14288 days ago · 9 km deep · 28 km away
14. 2.519 km W of Volcano, HawaiiMon, Aug 17, 12:24 PM HST · 14288 days ago · 4 km deep · 18 km away
15. 2.124 km ESE of Leilani Estates, HawaiiMon, Aug 17, 9:07 AM HST · 14288 days ago · 42 km deep · 58 km away
16. 1.95 km W of Volcano, HawaiiMon, Aug 17, 3:24 AM HST · 14289 days ago · 1 km deep · 6 km away
17. 1.814 km SSE of Fern Forest, HawaiiSun, Aug 16, 1:27 PM HST · 14289 days ago · 8 km deep · 22 km away
18. 2.521 km WSW of Volcano, HawaiiSun, Aug 16, 9:21 AM HST · 14289 days ago · 7 km deep · 18 km away
19. 1.613 km S of Volcano, HawaiiSat, Aug 15, 11:44 PM HST · 14290 days ago · 7 km deep · 10 km away
20. 2.318 km N of P?hala, HawaiiSat, Aug 15, 11:21 PM HST · 14290 days ago · 8 km deep · 23 km away

From the USGS Earthquake Hazards Program and its partner networks, event hv248507. Read Wed, Sep 30, 2026, 1:01 AM UTC.