M2.1 earthquake 20 km W of Volcano, Hawaii

Magnitude

2.1 (ml), micro

Local time

Sat, Mar 21, 1987, 11:22 PM HST

UTC

1987-03-22 09:22:08 UTC

Depth

4.9 km (3.0 mi), shallow

Epicenter

19.454° N, 155.426° W

Region

Hawaii

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.3 km horizontally, 0.8 km in depth

Magnitude uncertainty

±0.05

Depth from

From location

Station coverage gap

46°

Stations used

34

• Volcano, HawaiiPopulation 2,575. Forecast20 kmW
• Hilo, HawaiiPopulation 43,263. Forecast47 kmSW
• Honolulu, HawaiiPopulation 350,964. Forecast327 kmSE

After

1. 2.014 km SW of Volcano, HawaiiSun, Mar 22, 4:30 AM HST · 14434 days ago · 10 km deep · 13 km away
2. 2.36 km SSW of Volcano, HawaiiSun, Mar 22, 6:18 AM HST · 14434 days ago · 2 km deep · 18 km away
3. 2.523 km S of Fern Forest, HawaiiSun, Mar 22, 6:43 AM HST · 14434 days ago · 23 km deep · 39 km away
4. 1.515 km S of Fern Forest, HawaiiSun, Mar 22, 11:42 AM HST · 14434 days ago · 6 km deep · 34 km away
5. 1.613 km SSE of Fern Forest, HawaiiSun, Mar 22, 3:36 PM HST · 14434 days ago · 7 km deep · 39 km away
6. 2.225 km SE of Waikoloa, HawaiiMon, Mar 23, 3:41 AM HST · 14433 days ago · 12 km deep · 42 km away
7. 2.610 km S of Volcano, HawaiiMon, Mar 23, 8:03 AM HST · 14433 days ago · 7 km deep · 25 km away
8. 2.412 km SE of Waimea, HawaiiMon, Mar 23, 10:32 AM HST · 14433 days ago · 5 km deep · 57 km away
9. 2.49 km ESE of Waimea, HawaiiMon, Mar 23, 1:34 PM HST · 14433 days ago · 11 km deep · 62 km away
10. 2.319 km W of Volcano, HawaiiMon, Mar 23, 3:16 PM HST · 14433 days ago · 1 km deep · 2 km away
11. 2.33 km ENE of Kealakekua, HawaiiMon, Mar 23, 6:10 PM HST · 14433 days ago · 4 km deep · 49 km away
12. 2.320 km W of Volcano, HawaiiMon, Mar 23, 11:54 PM HST · 14433 days ago · 9 km deep · 2 km away
13. 2.94 km WSW of Waimea, HawaiiTue, Mar 24, 8:25 PM HST · 14432 days ago · 6 km deep · 68 km away
14. 2.413 km SSE of Volcano, HITue, Mar 24, 10:31 PM HST · 14432 days ago · 7 km deep · 28 km away
15. 1.62 km ESE of P?hala, HawaiiTue, Mar 24, 10:50 PM HST · 14432 days ago · 5 km deep · 29 km away
16. 2.613 km N of Wai‘?hinu, HawaiiThu, Mar 26, 6:08 AM HST · 14430 days ago · 8 km deep · 37 km away
17. 2.116 km SW of Leilani Estates, HawaiiThu, Mar 26, 8:08 AM HST · 14430 days ago · 8 km deep · 44 km away
18. 1.913 km SSE of Fern Forest, HawaiiThu, Mar 26, 9:27 AM HST · 14430 days ago · 7 km deep · 39 km away
19. 1.815 km S of Fern Forest, HawaiiFri, Mar 27, 9:19 AM HST · 14429 days ago · 6 km deep · 34 km away
20. 1.514 km SSE of Volcano, HawaiiFri, Mar 27, 2:52 PM HST · 14429 days ago · 4 km deep · 29 km away
21. 2.15 km SSW of Volcano, HawaiiSat, Mar 28, 12:39 AM HST · 14429 days ago · 2 km deep · 19 km away
22. 1.713 km SSE of Volcano, HawaiiSat, Mar 28, 11:46 AM HST · 14428 days ago · 8 km deep · 28 km away
23. 2.813 km SSE of Volcano, HawaiiSun, Mar 29, 4:37 AM HST · 14427 days ago · 8 km deep · 28 km away
24. 2.113 km SSE of Volcano, HawaiiSun, Mar 29, 4:40 AM HST · 14427 days ago · 7 km deep · 29 km away
25. 1.827 km SSE of Waimea, HawaiiSun, Mar 29, 11:51 AM HST · 14427 days ago · 11 km deep · 40 km away
26. 2.113 km SSE of Volcano, HawaiiSun, Mar 29, 1:11 PM HST · 14427 days ago · 7 km deep · 29 km away
27. 2.37 km SW of Volcano, HawaiiSun, Mar 29, 1:47 PM HST · 14427 days ago · 14 km deep · 17 km away
28. 2.914 km S of Volcano, HawaiiSun, Mar 29, 9:16 PM HST · 14427 days ago · 8 km deep · 27 km away
29. 2.30 km W of Honaunau-Napoopoo, HawaiiMon, Mar 30, 1:48 PM HST · 14426 days ago · 5 km deep · 46 km away
30. 2.23 km SSW of Puako, HawaiiMon, Mar 30, 9:05 PM HST · 14426 days ago · 9 km deep · 70 km away
31. 2.66 km E of Honaunau-Napoopoo, HawaiiTue, Mar 31, 7:57 PM HST · 14425 days ago · 13 km deep · 39 km away
32. 2.014 km SSE of Fern Forest, HawaiiThu, Apr 2, 12:40 AM HST · 14424 days ago · 7 km deep · 39 km away
33. 2.426 km N of P?hala, HawaiiThu, Apr 2, 9:00 AM HST · 14423 days ago · 7 km deep · 8 km away
34. 1.918 km NNE of P?hala, HawaiiThu, Apr 2, 1:38 PM HST · 14423 days ago · 10 km deep · 12 km away
35. 2.816 km NW of Puako, HawaiiThu, Apr 2, 6:55 PM HST · 14423 days ago · 6 km deep · 88 km away
36. 2.718 km ENE of Honaunau-Napoopoo, HawaiiFri, Apr 3, 3:22 PM HST · 14422 days ago · 4 km deep · 30 km away
37. 3.111 km SSE of Waimea, HawaiiFri, Apr 3, 10:20 PM HST · 14422 days ago · 10 km deep · 57 km away
38. 2.015 km SSE of Fern Forest, HawaiiSat, Apr 4, 2:27 AM HST · 14421 days ago · 7 km deep · 36 km away
39. 2.216 km SSE of Honaunau-Napoopoo, HawaiiSat, Apr 4, 8:38 AM HST · 14421 days ago · 10 km deep · 42 km away
40. 3.312 km S of Honaunau-Napoopoo, HawaiiSat, Apr 4, 11:13 AM HST · 14421 days ago · 0 km deep · 49 km away
41. 1.616 km SE of Fern Forest, HawaiiSat, Apr 4, 4:34 PM HST · 14421 days ago · 7 km deep · 43 km away
42. 2.913 km S of Honaunau-Napoopoo, HawaiiSat, Apr 4, 11:26 PM HST · 14421 days ago · 4 km deep · 50 km away
43. 1.917 km S of Pa‘auilo, HawaiiSun, Apr 5, 12:32 AM HST · 14421 days ago · 9 km deep · 48 km away
44. 2.012 km S of Honaunau-Napoopoo, HawaiiSun, Apr 5, 12:39 AM HST · 14421 days ago · 0 km deep · 47 km away
45. 1.715 km S of Volcano, HawaiiSun, Apr 5, 10:46 AM HST · 14420 days ago · 5 km deep · 28 km away
46. 2.416 km S of Volcano, HawaiiSun, Apr 5, 10:46 AM HST · 14420 days ago · 6 km deep · 28 km away
47. 2.115 km S of Volcano, HawaiiSun, Apr 5, 1:19 PM HST · 14420 days ago · 7 km deep · 27 km away
48. 2.116 km SE of Fern Forest, HawaiiSun, Apr 5, 4:10 PM HST · 14420 days ago · 6 km deep · 42 km away
49. 2.84 km WSW of P?hala, HawaiiMon, Apr 6, 12:03 AM HST · 14420 days ago · 7 km deep · 31 km away
50. 2.43 km ESE of P?hala, HawaiiMon, Apr 6, 8:03 AM HST · 14419 days ago · 7 km deep · 30 km away
51. 1.616 km SE of Fern Forest, HawaiiMon, Apr 6, 5:18 PM HST · 14419 days ago · 5 km deep · 43 km away
52. 2.012 km SSE of Fern Forest, HawaiiMon, Apr 6, 9:50 PM HST · 14419 days ago · 4 km deep · 36 km away
53. 2.63 km ESE of P?hala, HawaiiMon, Apr 6, 10:24 PM HST · 14419 days ago · 8 km deep · 29 km away
54. 1.720 km NNE of P?hala, HawaiiTue, Apr 7, 3:22 PM HST · 14418 days ago · 4 km deep · 7 km away
55. 1.923 km N of P?hala, HawaiiTue, Apr 7, 3:32 PM HST · 14418 days ago · 7 km deep · 10 km away
56. 2.410 km N of Kukuihaele, HawaiiTue, Apr 7, 5:14 PM HST · 14418 days ago · 37 km deep · 86 km away
57. 2.143 km ESE of Naalehu, HawaiiTue, Apr 7, 7:42 PM HST · 14418 days ago · 14 km deep · 67 km away
58. 2.721 km SE of Waikoloa, HawaiiWed, Apr 8, 3:52 AM HST · 14417 days ago · 10 km deep · 46 km away
59. 2.216 km SSW of Volcano, HawaiiWed, Apr 8, 5:34 PM HST · 14417 days ago · 9 km deep · 24 km away
60. 1.76 km SSW of Volcano, HawaiiWed, Apr 8, 8:01 PM HST · 14417 days ago · 3 km deep · 19 km away

The first 60 of 199.

Before

1. 2.717 km E of P?hala, HawaiiSat, Mar 21, 7:29 PM HST · 14435 days ago · 34 km deep · 31 km away
2. 1.910 km NW of P?hala, HawaiiSat, Mar 21, 9:45 AM HST · 14435 days ago · 4 km deep · 24 km away
3. 2.325 km N of P?hala, HawaiiSat, Mar 21, 4:21 AM HST · 14435 days ago · 6 km deep · 6 km away
4. 1.74 km SW of Volcano, HawaiiFri, Mar 20, 6:07 AM HST · 14436 days ago · 9 km deep · 17 km away
5. 2.018 km WNW of Volcano, HawaiiFri, Mar 20, 3:23 AM HST · 14436 days ago · 8 km deep · 4 km away
6. 1.817 km N of P?hala, HawaiiThu, Mar 19, 3:39 PM HST · 14437 days ago · 3 km deep · 11 km away
7. 1.916 km SE of Fern Forest, HawaiiThu, Mar 19, 2:42 PM HST · 14437 days ago · 15 km deep · 43 km away
8. 1.814 km SW of Leilani Estates, HawaiiThu, Mar 19, 9:21 AM HST · 14437 days ago · 7 km deep · 44 km away
9. 1.712 km SSE of Volcano, HawaiiWed, Mar 18, 8:53 PM HST · 14438 days ago · 7 km deep · 27 km away
10. 1.617 km SE of Fern Forest, HawaiiWed, Mar 18, 6:50 PM HST · 14438 days ago · 6 km deep · 43 km away
11. 2.36 km NNW of Volcano, HawaiiWed, Mar 18, 4:52 PM HST · 14438 days ago · 22 km deep · 17 km away
12. 1.817 km NE of P?hala, HawaiiTue, Mar 17, 2:20 PM HST · 14439 days ago · 9 km deep · 14 km away
13. 1.915 km SSE of Eden Roc, HawaiiTue, Mar 17, 7:01 AM HST · 14439 days ago · 6 km deep · 43 km away
14. 2.82 km ESE of P?hala, HawaiiTue, Mar 17, 6:06 AM HST · 14439 days ago · 6 km deep · 29 km away
15. 3.62 km ESE of P?hala, HawaiiTue, Mar 17, 3:12 AM HST · 14439 days ago · 8 km deep · 29 km away
16. 2.22 km SE of P?hala, HawaiiTue, Mar 17, 3:08 AM HST · 14439 days ago · 7 km deep · 30 km away
17. 1.9Island of Hawaii, HawaiiTue, Mar 17, 3:02 AM HST · 14439 days ago · 6 km deep · 29 km away
18. 1.815 km SSE of Volcano, HawaiiMon, Mar 16, 4:46 PM HST · 14440 days ago · 6 km deep · 32 km away
19. 1.923 km WNW of Volcano, HawaiiMon, Mar 16, 10:46 AM HST · 14440 days ago · 2 km deep · 6 km away
20. 1.99 km WSW of Volcano, HawaiiSat, Mar 14, 8:42 PM HST · 14442 days ago · 5 km deep · 12 km away

From the USGS Earthquake Hazards Program and its partner networks, event hv235513. Read Sun, Sep 27, 2026, 10:28 PM UTC.