M2.3 earthquake 18 km WSW of Volcano, Hawaii

Magnitude

2.3 (ML, local (Richter)), micro

Magnitude from

Hawaiian Volcano Observatory

Local time

Thu, Aug 23, 1973, 9:23 AM HST

UTC

1973-08-23 19:23:32 UTC

Depth

7.3 km (4.6 mi), shallow

Epicenter

19.390° N, 155.397° W

Region

Hawaii

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.6 km horizontally, 1.3 km in depth

Magnitude uncertainty

±0.09

Depth from

From location

Station coverage gap

68°

Stations used

23

• Volcano, HawaiiPopulation 2,575. Forecast18 kmWSW
• Hilo, HawaiiPopulation 43,263. Forecast50 kmSW
• Honolulu, HawaiiPopulation 350,964. Forecast334 kmSE

After

1. 2.014 km S of Volcano, HawaiiSat, Aug 25, 11:05 AM HST · 19395 days ago · 7 km deep · 20 km away
2. 2.1Island of Hawaii, HawaiiSat, Aug 25, 6:28 PM HST · 19395 days ago · 6 km deep · 38 km away
3. 2.320 km WSW of Volcano, HawaiiSun, Aug 26, 5:35 PM HST · 19394 days ago · 9 km deep · 3 km away
4. 2.55 km WSW of Volcano, HawaiiSun, Aug 26, 10:31 PM HST · 19394 days ago · 15 km deep · 12 km away
5. 1.915 km S of Volcano, HawaiiMon, Aug 27, 1:09 AM HST · 19394 days ago · 4 km deep · 17 km away
6. 2.95 km WSW of Volcano, HawaiiMon, Aug 27, 2:20 AM HST · 19394 days ago · 15 km deep · 12 km away
7. 2.414 km SE of Fern Forest, HawaiiMon, Aug 27, 6:45 AM HST · 19393 days ago · 7 km deep · 38 km away
8. 2.017 km SSE of Volcano, HawaiiMon, Aug 27, 1:59 PM HST · 19393 days ago · 8 km deep · 27 km away
9. 2.314 km S of Volcano, HawaiiMon, Aug 27, 3:08 PM HST · 19393 days ago · 8 km deep · 18 km away
10. 2.314 km W of Volcano, HawaiiTue, Aug 28, 3:36 AM HST · 19393 days ago · 8 km deep · 6 km away
11. 2.531 km SE of Naalehu, HawaiiTue, Aug 28, 5:22 AM HST · 19392 days ago · 9 km deep · 59 km away
12. 2.66 km WSW of Volcano, HawaiiTue, Aug 28, 9:41 AM HST · 19392 days ago · 16 km deep · 12 km away
13. 2.314 km S of Volcano, HawaiiTue, Aug 28, 2:09 PM HST · 19392 days ago · 7 km deep · 21 km away
14. 3.215 km S of Volcano, HawaiiTue, Aug 28, 2:13 PM HST · 19392 days ago · 9 km deep · 21 km away
15. 1.915 km S of Volcano, HawaiiTue, Aug 28, 8:25 PM HST · 19392 days ago · 6 km deep · 21 km away
16. 2.84 km NNE of Honaunau-Napoopoo, HawaiiWed, Aug 29, 2:20 AM HST · 19392 days ago · 2 km deep · 48 km away
17. 2.321 km W of Volcano, HawaiiWed, Aug 29, 2:56 AM HST · 19392 days ago · 5 km deep · 8 km away
18. 2.823 km SE of Leilani Estates, HawaiiWed, Aug 29, 12:06 PM HST · 19391 days ago · 30 km deep · 67 km away
19. 2.05 km WSW of Volcano, HawaiiWed, Aug 29, 7:18 PM HST · 19391 days ago · 15 km deep · 13 km away
20. 1.913 km S of Volcano, HawaiiThu, Aug 30, 2:07 AM HST · 19391 days ago · 7 km deep · 17 km away
21. 2.519 km NNE of P?hala, HawaiiThu, Aug 30, 4:09 AM HST · 19391 days ago · 7 km deep · 4 km away
22. 3.06 km SW of Kahaluu-Keauhou, HawaiiThu, Aug 30, 10:46 AM HST · 19390 days ago · 5 km deep · 65 km away
23. 3.24 km E of P?pa‘ikou, HawaiiThu, Aug 30, 11:09 PM HST · 19390 days ago · 38 km deep · 57 km away
24. 2.413 km SSE of Fern Forest, HawaiiFri, Aug 31, 1:54 AM HST · 19390 days ago · 6 km deep · 31 km away
25. 2.27 km WSW of Volcano, HawaiiFri, Aug 31, 5:22 PM HST · 19389 days ago · 1 km deep · 11 km away
26. 2.414 km SSE of Volcano, HawaiiFri, Aug 31, 5:41 PM HST · 19389 days ago · 7 km deep · 24 km away
27. 2.410 km NE of P?hala, HawaiiFri, Aug 31, 9:45 PM HST · 19389 days ago · 34 km deep · 13 km away
28. 2.214 km SE of Fern Forest, HawaiiSat, Sep 1, 4:43 AM HST · 19389 days ago · 7 km deep · 36 km away
29. 2.738 km SE of Naalehu, HawaiiSat, Sep 1, 5:01 AM HST · 19388 days ago · 50 km deep · 59 km away
30. 2.818 km W of Volcano, HawaiiSat, Sep 1, 9:56 AM HST · 19388 days ago · 7 km deep · 4 km away
31. 2.719 km W of Volcano, HawaiiSat, Sep 1, 11:02 AM HST · 19388 days ago · 5 km deep · 7 km away
32. 3.116 km S of Fern Forest, HawaiiSat, Sep 1, 8:56 PM HST · 19388 days ago · 8 km deep · 28 km away
33. 2.29 km SSW of Volcano, HawaiiSun, Sep 2, 1:03 AM HST · 19388 days ago · 26 km deep · 14 km away
34. 2.66 km SW of Volcano, HawaiiSun, Sep 2, 3:15 AM HST · 19388 days ago · 2 km deep · 13 km away
35. 1.914 km S of Volcano, HawaiiMon, Sep 3, 2:46 PM HST · 19386 days ago · 7 km deep · 20 km away
36. 2.027 km W of Volcano, HawaiiMon, Sep 3, 4:28 PM HST · 19386 days ago · 2 km deep · 13 km away
37. 2.529 km SE of Naalehu, HawaiiMon, Sep 3, 6:25 PM HST · 19386 days ago · 10 km deep · 58 km away
38. 1.915 km S of Volcano, HawaiiTue, Sep 4, 7:45 PM HST · 19385 days ago · 4 km deep · 22 km away
39. 2.724 km ENE of Honaunau-Napoopoo, HawaiiWed, Sep 5, 8:15 PM HST · 19384 days ago · 6 km deep · 35 km away
40. 2.113 km SSE of Fern Forest, HawaiiThu, Sep 6, 2:45 AM HST · 19384 days ago · 6 km deep · 34 km away
41. 1.75 km SW of Volcano, HawaiiThu, Sep 6, 4:56 AM HST · 19383 days ago · 7 km deep · 14 km away
42. 2.313 km SSE of Volcano, HawaiiThu, Sep 6, 9:42 AM HST · 19383 days ago · 6 km deep · 22 km away
43. 3.111 km NW of Kalaoa, HawaiiThu, Sep 6, 2:17 PM HST · 19383 days ago · 12 km deep · 83 km away
44. 2.016 km S of Volcano, HawaiiFri, Sep 7, 1:00 PM HST · 19382 days ago · 5 km deep · 20 km away
45. 2.820 km NNE of P?hala, HawaiiFri, Sep 7, 1:08 PM HST · 19382 days ago · 9 km deep · 3 km away
46. 2.811 km W of Kalaoa, HawaiiFri, Sep 7, 3:53 PM HST · 19382 days ago · 9 km deep · 82 km away
47. 1.919 km WSW of Volcano, HawaiiSat, Sep 8, 1:23 AM HST · 19382 days ago · 6 km deep · 2 km away
48. 2.018 km S of Volcano, HawaiiSat, Sep 8, 2:40 AM HST · 19382 days ago · 8 km deep · 20 km away
49. 2.37 km E of Leilani Estates, HawaiiSun, Sep 9, 5:53 AM HST · 19380 days ago · 6 km deep · 58 km away
50. 1.912 km SSE of Volcano, HawaiiSun, Sep 9, 3:38 PM HST · 19380 days ago · 7 km deep · 21 km away
51. 2.115 km S of Fern Forest, HawaiiMon, Sep 10, 3:00 AM HST · 19380 days ago · 7 km deep · 30 km away
52. 2.526 km E of Honaunau-Napoopoo, HawaiiMon, Sep 10, 3:03 AM HST · 19380 days ago · 16 km deep · 23 km away
53. 2.518 km N of P?hala, HawaiiMon, Sep 10, 10:19 AM HST · 19379 days ago · 8 km deep · 8 km away
54. 2.415 km SE of Honaunau-Napoopoo, HawaiiMon, Sep 10, 9:40 PM HST · 19379 days ago · 9 km deep · 40 km away
55. 2.113 km SSE of Fern Forest, HawaiiMon, Sep 10, 11:25 PM HST · 19379 days ago · 8 km deep · 32 km away
56. 2.114 km S of Fern Forest, HawaiiTue, Sep 11, 9:59 AM HST · 19378 days ago · 9 km deep · 30 km away
57. 2.04 km SW of Volcano, HawaiiTue, Sep 11, 8:11 PM HST · 19378 days ago · 14 km deep · 14 km away
58. 1.914 km S of Volcano, HawaiiWed, Sep 12, 3:00 AM HST · 19378 days ago · 6 km deep · 21 km away
59. 2.114 km SSE of Fern Forest, HawaiiWed, Sep 12, 8:05 AM HST · 19377 days ago · 7 km deep · 32 km away
60. 1.918 km NNE of P?hala, HawaiiThu, Sep 13, 12:38 AM HST · 19377 days ago · 4 km deep · 4 km away

The first 60 of at least 199.

Before

1. 2.013 km S of Fern Forest, HawaiiThu, Aug 23, 5:36 AM HST · 19397 days ago · 8 km deep · 28 km away
2. 2.39 km S of Volcano, HawaiiWed, Aug 22, 8:57 PM HST · 19398 days ago · 27 km deep · 17 km away
3. 2.52 km ENE of Honomu, HawaiiWed, Aug 22, 1:09 AM HST · 19399 days ago · 33 km deep · 63 km away
4. 2.713 km SSE of Volcano, HawaiiTue, Aug 21, 10:38 PM HST · 19399 days ago · 9 km deep · 23 km away
5. 2.54 km NNE of P?hala, HawaiiTue, Aug 21, 7:00 PM HST · 19399 days ago · 12 km deep · 18 km away
6. 2.56 km NNE of Kea‘au, HawaiiTue, Aug 21, 3:05 PM HST · 19399 days ago · 7 km deep · 51 km away
7. 1.914 km S of Volcano, HawaiiTue, Aug 21, 2:15 PM HST · 19399 days ago · 6 km deep · 17 km away
8. 2.2Island of Hawaii, HawaiiTue, Aug 21, 5:20 AM HST · 19399 days ago · 9 km deep · 40 km away
9. 3.014 km SW of Volcano, HawaiiTue, Aug 21, 4:15 AM HST · 19400 days ago · 2 km deep · 10 km away
10. 2.123 km W of Volcano, HawaiiSun, Aug 19, 9:44 AM HST · 19401 days ago · 17 km deep · 9 km away
11. 2.45 km ESE of Honaunau-Napoopoo, HawaiiSat, Aug 18, 7:34 PM HST · 19402 days ago · 6 km deep · 44 km away
12. 2.426 km SE of P?hala, HawaiiSat, Aug 18, 7:27 PM HST · 19402 days ago · 32 km deep · 42 km away
13. 2.04 km SW of Volcano, HawaiiSat, Aug 18, 3:12 PM HST · 19402 days ago · 15 km deep · 15 km away
14. 2.411 km NE of Honaunau-Napoopoo, HawaiiSat, Aug 18, 10:28 AM HST · 19402 days ago · 5 km deep · 44 km away
15. 2.30 km W of Volcano, HawaiiFri, Aug 17, 2:11 PM HST · 19403 days ago · 31 km deep · 17 km away
16. 1.9Island of Hawaii, HawaiiFri, Aug 17, 1:00 AM HST · 19404 days ago · 7 km deep · 20 km away
17. 2.88 km W of Honomu, HawaiiWed, Aug 15, 10:24 PM HST · 19405 days ago · 37 km deep · 57 km away
18. 2.722 km ENE of Honaunau-Napoopoo, HawaiiWed, Aug 15, 8:41 PM HST · 19405 days ago · 7 km deep · 36 km away
19. 2.210 km NW of P?hala, HawaiiWed, Aug 15, 11:08 AM HST · 19405 days ago · 6 km deep · 22 km away
20. 2.121 km N of P?hala, HawaiiWed, Aug 15, 9:44 AM HST · 19405 days ago · 7 km deep · 10 km away

From the USGS Earthquake Hazards Program and its partner networks, event hv19732085. Read Fri, Oct 2, 2026, 2:17 AM UTC.