M2.1 earthquake 16 km SSW of Volcano, Hawaii

Magnitude

2.1 (ML, local (Richter)), micro

Magnitude from

Hawaiian Volcano Observatory

Local time

Sun, Apr 30, 1978, 3:39 AM HST

UTC

1978-04-30 13:39:41 UTC

Depth

6.5 km (4.0 mi), shallow

Epicenter

19.296° N, 155.268° W

Region

Hawaii

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.6 km horizontally, 0.8 km in depth

Magnitude uncertainty

±0.02

Depth from

From location

Station coverage gap

158°

Stations used

23

• Volcano, HawaiiPopulation 2,575. Forecast17 kmSSW
• Hawaiian Paradise Park, HawaiiPopulation 11,404. Forecast45 kmSW
• Honolulu, HawaiiPopulation 350,964. Forecast351 kmSE

After

1. 2.414 km SSE of Volcano, HawaiiSun, Apr 30, 6:01 AM HST · 17689 days ago · 6 km deep · 9 km away
2. 2.812 km SSE of Volcano, HawaiiSun, Apr 30, 6:09 AM HST · 17689 days ago · 9 km deep · 10 km away
3. 2.312 km SSE of Volcano, HawaiiSun, Apr 30, 3:08 PM HST · 17688 days ago · 7 km deep · 9 km away
4. 2.212 km S of Volcano, HawaiiSun, Apr 30, 3:50 PM HST · 17688 days ago · 6 km deep · 4 km away
5. 2.112 km SSE of Volcano, HawaiiSun, Apr 30, 8:16 PM HST · 17688 days ago · 8 km deep · 9 km away
6. 2.01 km NE of Honaunau-Napoopoo, HawaiiSun, Apr 30, 9:48 PM HST · 17688 days ago · 4 km deep · 64 km away
7. 2.114 km SW of Leilani Estates, HawaiiSun, Apr 30, 11:55 PM HST · 17688 days ago · 5 km deep · 29 km away
8. 2.57 km SW of Volcano, HawaiiMon, May 1, 4:23 AM HST · 17688 days ago · 2 km deep · 10 km away
9. 2.714 km SSE of Volcano, HawaiiMon, May 1, 5:42 AM HST · 17688 days ago · 9 km deep · 9 km away
10. 2.214 km SSW of Volcano, HawaiiMon, May 1, 1:28 PM HST · 17687 days ago · 6 km deep · 2 km away
11. 2.120 km W of Volcano, HawaiiMon, May 1, 2:29 PM HST · 17687 days ago · -2 km deep · 21 km away
12. 2.113 km W of Paukaa, HawaiiMon, May 1, 3:46 PM HST · 17687 days ago · 28 km deep · 53 km away
13. 2.816 km S of Volcano, HawaiiMon, May 1, 4:59 PM HST · 17687 days ago · 9 km deep · 1 km away
14. 2.413 km S of Fern Forest, HawaiiTue, May 2, 5:40 AM HST · 17687 days ago · 7 km deep · 17 km away
15. 2.19 km S of Volcano, HawaiiTue, May 2, 10:39 PM HST · 17686 days ago · 11 km deep · 8 km away
16. 3.49 km NNW of P?hala, HawaiiWed, May 3, 7:29 AM HST · 17686 days ago · 7 km deep · 24 km away
17. 2.115 km SSE of Fern Forest, HawaiiWed, May 3, 7:56 AM HST · 17686 days ago · 6 km deep · 22 km away
18. 2.311 km SW of Volcano, HawaiiWed, May 3, 12:33 PM HST · 17685 days ago · 2 km deep · 8 km away
19. 2.217 km WSW of Volcano, HawaiiWed, May 3, 12:44 PM HST · 17685 days ago · 9 km deep · 16 km away
20. 2.113 km SSE of Fern Forest, HawaiiWed, May 3, 5:52 PM HST · 17685 days ago · 7 km deep · 21 km away
21. 2.222 km S of Fern Forest, HawaiiWed, May 3, 10:23 PM HST · 17685 days ago · 9 km deep · 18 km away
22. 2.115 km W of Volcano, HawaiiThu, May 4, 3:16 AM HST · 17685 days ago · 7 km deep · 21 km away
23. 2.0Island of Hawaii, HawaiiThu, May 4, 7:39 AM HST · 17685 days ago · 34 km deep · 76 km away
24. 2.36 km SSW of Volcano, HawaiiThu, May 4, 3:14 PM HST · 17684 days ago · 2 km deep · 11 km away
25. 2.610 km S of Volcano, HawaiiThu, May 4, 7:04 PM HST · 17684 days ago · 6 km deep · 8 km away
26. 2.319 km WSW of Volcano, HawaiiThu, May 4, 7:26 PM HST · 17684 days ago · 8 km deep · 17 km away
27. 2.115 km S of Fern Forest, HawaiiThu, May 4, 7:43 PM HST · 17684 days ago · 7 km deep · 16 km away
28. 2.113 km SSE of Eden Roc, HawaiiThu, May 4, 9:02 PM HST · 17684 days ago · 11 km deep · 27 km away
29. 2.18 km ESE of Leilani Estates, HawaiiFri, May 5, 4:55 PM HST · 17683 days ago · 9 km deep · 47 km away
30. 2.412 km S of P?hala, HawaiiSat, May 6, 2:20 AM HST · 17683 days ago · 27 km deep · 31 km away
31. 2.212 km SW of Laup?hoehoe, HawaiiSat, May 6, 3:16 AM HST · 17683 days ago · 9 km deep · 70 km away
32. 3.421 km W of Volcano, HawaiiSat, May 6, 8:12 AM HST · 17683 days ago · 8 km deep · 21 km away
33. 2.28 km S of Volcano, HawaiiSun, May 7, 12:19 AM HST · 17682 days ago · 10 km deep · 8 km away
34. 2.211 km SSE of Volcano, HawaiiSun, May 7, 5:36 AM HST · 17682 days ago · 8 km deep · 8 km away
35. 2.013 km SSE of Fern Forest, HawaiiSun, May 7, 9:35 AM HST · 17682 days ago · 5 km deep · 18 km away
36. 2.714 km S of Volcano, HawaiiSun, May 7, 12:40 PM HST · 17681 days ago · 5 km deep · 5 km away
37. 2.46 km SSW of P?hala, HawaiiSun, May 7, 1:08 PM HST · 17681 days ago · 9 km deep · 30 km away
38. 2.112 km SSE of Fern Forest, HawaiiSun, May 7, 5:33 PM HST · 17681 days ago · 7 km deep · 19 km away
39. 2.112 km SE of Fern Forest, HawaiiMon, May 8, 12:11 AM HST · 17681 days ago · 8 km deep · 23 km away
40. 2.414 km SSE of Fern Forest, HawaiiTue, May 9, 4:37 AM HST · 17680 days ago · 3 km deep · 17 km away
41. 2.117 km SW of Leilani Estates, HawaiiTue, May 9, 12:28 PM HST · 17679 days ago · 6 km deep · 27 km away
42. 2.319 km WSW of Volcano, HawaiiTue, May 9, 5:37 PM HST · 17679 days ago · 9 km deep · 17 km away
43. 2.912 km SSE of Volcano, HawaiiTue, May 9, 6:46 PM HST · 17679 days ago · 7 km deep · 8 km away
44. 3.113 km SSE of Fern Forest, HawaiiWed, May 10, 2:40 AM HST · 17679 days ago · 9 km deep · 21 km away
45. 2.217 km SSW of Leilani Estates, HawaiiWed, May 10, 11:23 AM HST · 17678 days ago · 2 km deep · 29 km away
46. 2.112 km W of Volcano, HawaiiWed, May 10, 12:45 PM HST · 17678 days ago · 4 km deep · 18 km away
47. 2.25 km SSW of Volcano, HawaiiWed, May 10, 1:19 PM HST · 17678 days ago · 2 km deep · 11 km away
48. 3.516 km S of Fern Forest, HawaiiWed, May 10, 2:23 PM HST · 17678 days ago · 8 km deep · 17 km away
49. 2.4Island of Hawaii, HawaiiWed, May 10, 2:29 PM HST · 17678 days ago · 6 km deep · 17 km away
50. 2.919 km W of Volcano, HawaiiWed, May 10, 10:05 PM HST · 17678 days ago · 9 km deep · 21 km away
51. 2.39 km SSE of Leilani Estates, HawaiiThu, May 11, 1:28 AM HST · 17678 days ago · 10 km deep · 43 km away
52. 2.212 km SSE of Volcano, HawaiiFri, May 12, 4:58 AM HST · 17677 days ago · 7 km deep · 11 km away
53. 2.116 km SE of Fern Forest, HawaiiFri, May 12, 5:11 AM HST · 17677 days ago · 7 km deep · 25 km away
54. 2.816 km SSE of Fern Forest, HawaiiFri, May 12, 5:16 AM HST · 17677 days ago · 8 km deep · 23 km away
55. 2.911 km WNW of P?hala, HawaiiFri, May 12, 1:54 PM HST · 17676 days ago · 7 km deep · 34 km away
56. 2.412 km SSE of Fern Forest, HawaiiSat, May 13, 4:45 AM HST · 17676 days ago · 5 km deep · 19 km away
57. 2.014 km SE of Volcano, HawaiiSat, May 13, 4:53 AM HST · 17676 days ago · 5 km deep · 12 km away
58. 2.16 km SSW of Volcano, HawaiiSat, May 13, 7:32 AM HST · 17676 days ago · 2 km deep · 10 km away
59. 2.16 km SSW of Volcano, HawaiiSat, May 13, 7:34 AM HST · 17676 days ago · 2 km deep · 11 km away
60. 2.56 km SSW of Volcano, HawaiiSat, May 13, 7:49 AM HST · 17676 days ago · 1 km deep · 11 km away

The first 60 of 200.

Before

1. 2.26 km SW of Volcano, HawaiiSat, Apr 29, 11:29 PM HST · 17689 days ago · 1 km deep · 12 km away
2. 1.913 km SSE of Volcano, HawaiiSat, Apr 29, 8:42 PM HST · 17689 days ago · 6 km deep · 9 km away
3. 1.7Island of Hawaii, HawaiiSat, Apr 29, 7:36 PM HST · 17689 days ago · 7 km deep · 3 km away
4. 1.615 km NNW of Wai‘?hinu, HawaiiSat, Apr 29, 3:59 PM HST · 17689 days ago · 4 km deep · 45 km away
5. 1.95 km SSE of Kukuihaele, HawaiiSat, Apr 29, 5:49 AM HST · 17690 days ago · 35 km deep · 92 km away
6. 2.314 km SSE of Volcano, HawaiiSat, Apr 29, 5:24 AM HST · 17690 days ago · 6 km deep · 8 km away
7. 2.519 km WNW of P?hala, HawaiiSat, Apr 29, 4:50 AM HST · 17690 days ago · -1 km deep · 40 km away
8. 2.610 km ESE of Honaunau-Napoopoo, HawaiiFri, Apr 28, 7:47 PM HST · 17690 days ago · 1 km deep · 54 km away
9. 2.235 km ENE of Honaunau-Napoopoo, HawaiiFri, Apr 28, 8:49 AM HST · 17691 days ago · 6 km deep · 41 km away
10. 2.134 km WNW of Volcano, HawaiiFri, Apr 28, 6:15 AM HST · 17691 days ago · 3 km deep · 39 km away
11. 2.314 km SSE of Fern Forest, HawaiiThu, Apr 27, 9:35 PM HST · 17691 days ago · 8 km deep · 21 km away
12. 2.37 km SW of Volcano, HawaiiThu, Apr 27, 3:17 PM HST · 17691 days ago · 1 km deep · 11 km away
13. 2.211 km SSE of Volcano, HawaiiThu, Apr 27, 4:26 AM HST · 17692 days ago · 32 km deep · 10 km away
14. 2.315 km N of P?hala, HawaiiThu, Apr 27, 4:20 AM HST · 17692 days ago · 0 km deep · 24 km away
15. 2.116 km SSE of Fern Forest, HawaiiThu, Apr 27, 1:57 AM HST · 17692 days ago · 5 km deep · 22 km away
16. 2.315 km NE of P?hala, HawaiiWed, Apr 26, 8:33 PM HST · 17692 days ago · 6 km deep · 10 km away
17. 2.35 km E of Leilani Estates, HawaiiWed, Apr 26, 7:14 PM HST · 17692 days ago · 7 km deep · 46 km away
18. 2.113 km SSE of Volcano, HawaiiWed, Apr 26, 5:08 PM HST · 17692 days ago · 7 km deep · 10 km away
19. 2.113 km SSE of Volcano, HawaiiWed, Apr 26, 4:40 PM HST · 17692 days ago · 6 km deep · 10 km away
20. 2.113 km SSE of Volcano, HawaiiWed, Apr 26, 3:00 PM HST · 17692 days ago · 8 km deep · 11 km away

From the USGS Earthquake Hazards Program and its partner networks, event hv19780725. Read Sun, Oct 4, 2026, 8:01 AM UTC.