M1.7 earthquake 21 km W of Volcano, Hawaii

Magnitude

1.7 (ml), micro

Local time

Wed, Dec 23, 1987, 12:12 AM HST

UTC

1987-12-23 10:12:18 UTC

Depth

5.2 km (3.2 mi), shallow

Epicenter

19.428° N, 155.435° 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

48°

Stations used

24

• Volcano, HawaiiPopulation 2,575. Forecast21 kmW
• Hilo, HawaiiPopulation 43,263. Forecast49 kmSW
• Honolulu, HawaiiPopulation 350,964. Forecast328 kmSE

After

1. 2.4Island of Hawaii, HawaiiWed, Dec 23, 3:01 PM HST · 14160 days ago · 30 km deep · 12 km away
2. 2.28 km SSE of Waikoloa, HawaiiWed, Dec 23, 5:13 PM HST · 14160 days ago · 11 km deep · 59 km away
3. 2.43 km N of Volcano, HawaiiThu, Dec 24, 6:36 AM HST · 14160 days ago · 14 km deep · 22 km away
4. 2.012 km N of P?hala, HawaiiThu, Dec 24, 3:47 PM HST · 14159 days ago · 7 km deep · 14 km away
5. 3.119 km SSE of Waikoloa, HawaiiFri, Dec 25, 5:21 AM HST · 14159 days ago · 12 km deep · 48 km away
6. 2.314 km SSE of Fern Forest, HawaiiFri, Dec 25, 12:06 PM HST · 14159 days ago · 7 km deep · 36 km away
7. 3.912 km W of Volcano, HawaiiFri, Dec 25, 2:19 PM HST · 14158 days ago · 37 km deep · 9 km away
8. 2.26 km NW of P?hala, HawaiiFri, Dec 25, 7:24 PM HST · 14158 days ago · 6 km deep · 23 km away
9. 2.013 km SSE of Fern Forest, HawaiiFri, Dec 25, 9:35 PM HST · 14158 days ago · 7 km deep · 39 km away
10. 2.312 km SSE of Volcano, HawaiiSat, Dec 26, 1:41 AM HST · 14158 days ago · 5 km deep · 27 km away
11. 2.123 km SW of Laup?hoehoe, HawaiiSat, Dec 26, 10:23 AM HST · 14158 days ago · 24 km deep · 45 km away
12. 1.912 km SW of Volcano, HawaiiSat, Dec 26, 4:13 PM HST · 14157 days ago · 12 km deep · 15 km away
13. 1.818 km N of P?hala, HawaiiSun, Dec 27, 4:51 AM HST · 14157 days ago · 9 km deep · 7 km away
14. 2.58 km W of Volcano, HawaiiSun, Dec 27, 3:14 PM HST · 14156 days ago · 6 km deep · 13 km away
15. 1.913 km S of Volcano, HawaiiMon, Dec 28, 9:12 AM HST · 14156 days ago · 6 km deep · 26 km away
16. 1.910 km S of Volcano, HawaiiMon, Dec 28, 10:41 AM HST · 14156 days ago · 7 km deep · 25 km away
17. 2.0Island of Hawaii, HawaiiMon, Dec 28, 3:47 PM HST · 14155 days ago · 7 km deep · 8 km away
18. 1.813 km SSE of Fern Forest, HawaiiTue, Dec 29, 9:53 AM HST · 14155 days ago · 8 km deep · 39 km away
19. 1.66 km WSW of Volcano, HawaiiTue, Dec 29, 10:16 PM HST · 14154 days ago · 0 km deep · 15 km away
20. 1.816 km S of Fern Forest, HawaiiWed, Dec 30, 8:13 AM HST · 14154 days ago · 8 km deep · 36 km away
21. 1.913 km SSE of Volcano, HawaiiWed, Dec 30, 5:00 PM HST · 14153 days ago · 7 km deep · 28 km away
22. 2.017 km N of P?hala, HawaiiWed, Dec 30, 6:48 PM HST · 14153 days ago · 8 km deep · 8 km away
23. 1.615 km SW of Leilani Estates, HawaiiFri, Jan 1, 6:49 AM HST · 14152 days ago · 8 km deep · 45 km away
24. 1.712 km SSE of Volcano, HawaiiFri, Jan 1, 3:17 PM HST · 14151 days ago · 7 km deep · 26 km away
25. 2.314 km W of Kalaoa, HawaiiFri, Jan 1, 10:00 PM HST · 14151 days ago · 13 km deep · 80 km away
26. 2.613 km S of Volcano, HawaiiSat, Jan 2, 12:56 AM HST · 14151 days ago · 9 km deep · 25 km away
27. 1.614 km S of Volcano, HawaiiSat, Jan 2, 3:55 AM HST · 14151 days ago · 6 km deep · 24 km away
28. 1.913 km SSE of Volcano, HawaiiSat, Jan 2, 6:01 PM HST · 14150 days ago · 7 km deep · 28 km away
29. 2.46 km SSW of Volcano, HISat, Jan 2, 6:54 PM HST · 14150 days ago · 2 km deep · 19 km away
30. 1.916 km N of P?hala, HawaiiSat, Jan 2, 9:44 PM HST · 14150 days ago · 8 km deep · 11 km away
31. 2.310 km NNW of P?hala, HawaiiSun, Jan 3, 9:42 AM HST · 14150 days ago · 8 km deep · 16 km away
32. 2.612 km SSE of Volcano, HawaiiSun, Jan 3, 8:12 PM HST · 14149 days ago · 7 km deep · 27 km away
33. 2.018 km NNE of P?hala, HawaiiSun, Jan 3, 11:49 PM HST · 14149 days ago · 8 km deep · 7 km away
34. 2.117 km NE of Honaunau-Napoopoo, HawaiiMon, Jan 4, 10:33 PM HST · 14148 days ago · 8 km deep · 33 km away
35. 2.318 km WNW of Kailua-Kona, HawaiiTue, Jan 5, 6:18 AM HST · 14148 days ago · 10 km deep · 83 km away
36. 1.912 km SSE of Fern Forest, HawaiiTue, Jan 5, 10:11 AM HST · 14148 days ago · 7 km deep · 38 km away
37. 2.49 km SSE of Waikoloa, HawaiiTue, Jan 5, 8:02 PM HST · 14147 days ago · 11 km deep · 59 km away
38. 1.914 km NE of P?hala, HawaiiWed, Jan 6, 1:48 AM HST · 14147 days ago · 2 km deep · 16 km away
39. 1.819 km WNW of Kalaoa, HawaiiWed, Jan 6, 2:27 AM HST · 14147 days ago · 15 km deep · 86 km away
40. 1.63 km ENE of P?hala, HawaiiWed, Jan 6, 12:52 PM HST · 14147 days ago · 7 km deep · 24 km away
41. 2.221 km WNW of Volcano, HawaiiWed, Jan 6, 1:08 PM HST · 14147 days ago · 2 km deep · 7 km away
42. 1.815 km SSW of Volcano, HawaiiWed, Jan 6, 9:45 PM HST · 14146 days ago · 6 km deep · 22 km away
43. 2.47 km NNW of P?hala, HawaiiFri, Jan 8, 4:26 AM HST · 14145 days ago · 8 km deep · 19 km away
44. 1.917 km S of Volcano, HawaiiSat, Jan 9, 12:24 AM HST · 14144 days ago · 9 km deep · 28 km away
45. 1.625 km N of P?hala, HawaiiSat, Jan 9, 6:22 AM HST · 14144 days ago · 8 km deep · 6 km away
46. 1.814 km SSE of Volcano, HawaiiSat, Jan 9, 10:13 AM HST · 14144 days ago · 7 km deep · 29 km away
47. 1.813 km S of Volcano, HawaiiSat, Jan 9, 6:34 PM HST · 14143 days ago · 7 km deep · 25 km away
48. 2.25 km SW of Volcano, HawaiiSat, Jan 9, 7:37 PM HST · 14143 days ago · 2 km deep · 18 km away
49. 2.016 km S of Volcano, HawaiiSat, Jan 9, 11:03 PM HST · 14143 days ago · 9 km deep · 28 km away
50. 1.811 km SSE of Volcano, HawaiiSun, Jan 10, 8:04 AM HST · 14143 days ago · 8 km deep · 27 km away
51. 2.7Island of Hawaii, HawaiiSun, Jan 10, 2:52 PM HST · 14142 days ago · 8 km deep · 5 km away
52. 2.425 km ESE of Honaunau-Napoopoo, HawaiiSun, Jan 10, 6:13 PM HST · 14142 days ago · 7 km deep · 20 km away
53. 2.212 km S of Volcano, HawaiiSun, Jan 10, 6:15 PM HST · 14142 days ago · 6 km deep · 26 km away
54. 2.26 km SSE of Waikoloa, HawaiiMon, Jan 11, 10:17 AM HST · 14142 days ago · 18 km deep · 61 km away
55. 1.95 km SSW of Volcano, HawaiiMon, Jan 11, 10:47 AM HST · 14142 days ago · 3 km deep · 20 km away
56. 2.814 km SSE of Fern Forest, HawaiiMon, Jan 11, 5:39 PM HST · 14141 days ago · 7 km deep · 36 km away
57. 2.29 km SSE of Waikoloa, HawaiiMon, Jan 11, 7:50 PM HST · 14141 days ago · 10 km deep · 58 km away
58. 2.421 km SE of Waikoloa, HawaiiMon, Jan 11, 10:18 PM HST · 14141 days ago · 10 km deep · 46 km away
59. 1.918 km N of P?hala, HawaiiMon, Jan 11, 11:54 PM HST · 14141 days ago · 7 km deep · 9 km away
60. 2.03 km ENE of Puako, HawaiiTue, Jan 12, 10:46 AM HST · 14141 days ago · 12 km deep · 72 km away

The first 60 of 199.

Before

1. 1.817 km S of Volcano, HawaiiTue, Dec 22, 8:29 PM HST · 14161 days ago · 7 km deep · 28 km away
2. 1.916 km S of Volcano, HawaiiTue, Dec 22, 8:28 PM HST · 14161 days ago · 8 km deep · 28 km away
3. 1.712 km S of Volcano, HawaiiTue, Dec 22, 8:21 AM HST · 14162 days ago · 5 km deep · 26 km away
4. 1.916 km S of Volcano, HawaiiMon, Dec 21, 6:23 PM HST · 14162 days ago · 6 km deep · 27 km away
5. 2.615 km S of Fern Forest, HawaiiMon, Dec 21, 4:16 PM HST · 14162 days ago · 8 km deep · 36 km away
6. 1.913 km SE of Fern Forest, HawaiiMon, Dec 21, 2:47 PM HST · 14162 days ago · 7 km deep · 42 km away
7. 1.917 km S of Volcano, HawaiiMon, Dec 21, 2:04 PM HST · 14162 days ago · 8 km deep · 27 km away
8. 2.118 km N of P?hala, HawaiiSun, Dec 20, 3:26 AM HST · 14164 days ago · 7 km deep · 8 km away
9. 2.62 km NE of Honaunau-Napoopoo, HawaiiSat, Dec 19, 8:26 PM HST · 14164 days ago · 9 km deep · 43 km away
10. 2.116 km SW of Leilani Estates, HawaiiSat, Dec 19, 8:12 AM HST · 14165 days ago · 6 km deep · 45 km away
11. 2.417 km SW of Leilani Estates, HawaiiFri, Dec 18, 4:36 AM HST · 14166 days ago · 6 km deep · 45 km away
12. 1.616 km SW of Leilani Estates, HawaiiFri, Dec 18, 4:00 AM HST · 14166 days ago · 6 km deep · 45 km away
13. 2.224 km N of P?hala, HawaiiFri, Dec 18, 1:00 AM HST · 14166 days ago · 7 km deep · 7 km away
14. 2.328 km WSW of Pepeekeo, HawaiiThu, Dec 17, 5:28 PM HST · 14166 days ago · 13 km deep · 38 km away
15. 1.620 km SSE of P?hala, HawaiiThu, Dec 17, 11:16 AM HST · 14167 days ago · 32 km deep · 43 km away
16. 3.218 km N of P?hala, HawaiiThu, Dec 17, 9:24 AM HST · 14167 days ago · 8 km deep · 8 km away
17. 2.215 km E of P?hala, HawaiiThu, Dec 17, 8:48 AM HST · 14167 days ago · 27 km deep · 28 km away
18. 1.613 km N of P?hala, HawaiiWed, Dec 16, 8:47 PM HST · 14167 days ago · 9 km deep · 14 km away
19. 1.616 km N of P?hala, HawaiiWed, Dec 16, 1:31 PM HST · 14167 days ago · 7 km deep · 11 km away
20. 1.98 km N of Wai‘?hinu, HawaiiWed, Dec 16, 10:24 AM HST · 14168 days ago · 7 km deep · 37 km away

From the USGS Earthquake Hazards Program and its partner networks, event hv258313. Read Wed, Sep 30, 2026, 10:40 AM UTC.