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SeismoAtlas

M2.2 earthquake 42 km ESE of Hōlualoa, Hawaii, United States

A magnitude 2.2 earthquake struck 42 km ESE of Hōlualoa, Hawaii, United States at 22:57 local time (08:57 UTC) on 9 Oct 2026, at a depth of 41 km, according to USGS.

Data: USGS · updated 2026-10-13 22:20 UTC · reviewed

Magnitude
2.2micro
local magnitude (Richter) (ml)
Depth
40.9 km
Status
Reviewed
Origin time
2026-10-10 08:57:29 UTC
Local: 9 Oct 2026, 22:57:29 (Pacific/Honolulu)
Epicentre
19.451° N, 155.592° W

Circles show this event and others within 30 km from 7 days before to 30 days after. Lines: plate boundaries and GEM active faults. Open on the live map

Nearby places

Distance and estimated shaking at nearby places
PlaceDistanceEst. shaking
HōlualoaHawaii, United States · pop. 8,53842 kmINot felt
Kailua-KonaHawaii, United States · pop. 11,97548 kmINot felt
HiloHawaii, United States · pop. 43,26361 kmINot felt
HonoluluHawaii, United States · pop. 350,964314 kmINot felt

Shaking is an estimate from the intensity prediction equation of Allen, Wald & Worden (2012), not an observation. Local ground and buildings can change it by a level or more.

Every agency's solution

Agencies locate earthquakes with their own stations and methods, so their numbers differ. We match reports of the same event by time, distance and magnitude and show them side by side. The headline uses USGS · HV, which has been reviewed by an analyst.

AgencyMagnitudeDepthEpicentreTime offsetStatus
USGS · HVheadlineHawaiian Volcano Observatory via U.S. Geological Survey2.2 ml40.9 km19.45° N, 155.59° W–Reviewed

How big was it?

Usually not felt. Recorded by nearby seismometers; thousands occur worldwide every day.

It released roughly the energy of 26 kg of TNT. Magnitude is logarithmic: each whole step means about 32 times more energy and 10 times larger waves on a seismogram. Depth matters too: at 41 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M2.2 releases about 28× the energy of M1.2, and its waves are about 9.1× taller on a seismogram. Energy: 26 kg of TNT vs 951 g of TNT.

Each square is the energy of one M1.2. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

98 later earthquakes within 30 km; the largest was M3.1 8 days ago. 26 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M2.2

98 later earthquakes nearby. Aftershock rates typically fall off roughly as 1/time (Omori's law).

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
4.021.8-3
10.081.942
25.821.741
28.302.132
49.721.730
61.842.137
75.862.049
87.652.232
88.161.930
90.421.50
98.841.80
104.831.428
104.971.728
111.122.139
139.221.828
141.912.139
147.001.89
156.891.434
157.811.10
159.081.77
161.501.70
165.832.132
168.741.431
169.161.729
169.441.129
170.431.728
175.031.433
181.682.322
190.861.71
191.971.729
200.520.90
207.832.339
211.171.929
212.711.830
214.281.99
220.391.833
228.681.38
229.071.931
235.312.1-1
239.311.929
255.812.345
259.371.730
260.421.713
275.971.929
280.832.235
291.611.710
298.581.50
298.582.7-1
307.561.75
315.351.83
317.861.829
326.331.830
330.511.86
330.531.97
332.932.3-1
357.101.847
361.622.339
376.331.931
411.022.49
417.882.530
422.342.60
435.891.233
440.541.828
444.111.78
495.181.832
496.512.132
506.121.430
509.371.62
509.411.92
509.661.72
512.011.71
539.580.83
542.931.67
561.782.122
587.881.97
593.751.112
597.152.440
600.181.329
613.043.1-2
613.461.8-2
623.621.77
627.461.76
629.151.830
646.721.830
649.862.473
652.542.441
652.541.923
660.381.60
664.461.928
665.382.117
676.371.930
677.131.93
677.761.950
678.861.928
684.121.329
685.471.930
686.932.18
696.292.50
  1. 3.143 km SE of Hōlualoa, Hawaii, United States11-04 21:59
  2. 2.742 km ESE of Hōlualoa, Hawaii, United States10-22 19:32
  3. 2.646 km WSW of Hilo, Hawaii, United States10-27 23:17
  4. 2.566 km SE of Hōlualoa, Hawaii, United States10-27 18:50
  5. 2.547 km SW of Hilo, Hawaii, United States11-08 09:14
  6. 2.442 km ESE of Hōlualoa, Hawaii, United States11-04 06:06
  7. 2.429 km SSE of Hōlualoa, Hawaii, United States11-06 10:48
  8. 2.439 km ESE of Hōlualoa, Hawaii, United States10-27 11:58
  9. 2.443 km ESE of Hōlualoa, Hawaii, United States11-06 13:29
  10. 2.343 km ESE of Hōlualoa, Hawaii, United States10-19 00:47
  11. 2.342 km ESE of Hōlualoa, Hawaii, United States10-25 10:34
  12. 2.339 km ESE of Hōlualoa, Hawaii, United States10-21 00:46
  13. 2.314 km SE of Hōlualoa, Hawaii, United States10-17 22:38
  14. 2.348 km WSW of Hilo, Hawaii, United States10-24 05:53
  15. 2.238 km ESE of Hōlualoa, Hawaii, United States10-22 01:47
  16. 2.266 km SW of Hawaiian Paradise Park, United States10-14 00:36
  17. 2.142 km ESE of Hōlualoa, Hawaii, United States10-11 13:15
  18. 2.138 km SE of Hōlualoa, Hawaii, United States10-16 06:51
  19. 2.167 km SE of Hōlualoa, Hawaii, United States10-31 01:28
  20. 2.117 km SE of Hōlualoa, Hawaii, United States11-02 18:44
  21. 2.152 km WSW of Hawaiian Paradise Park, United States11-07 23:53
  22. 2.167 km SE of Hōlualoa, Hawaii, United States10-17 06:47
  23. 2.128 km SSE of Hōlualoa, Hawaii, United States11-07 02:20
  24. 2.138 km ESE of Hōlualoa, Hawaii, United States10-12 22:47
  25. 2.137 km ESE of Hōlualoa, Hawaii, United States10-15 00:04

Did you feel it?

Reports from people help show where shaking was strong. They are anonymous and shown here in aggregate.

Reports close 14 days after an earthquake.

Reports on SeismoAtlas

No reports yet.

Event id hv75053352. First recorded here 13 Oct 2026, 22:55:47 UTC. Solutions: USGS · HV (usgs:hv75053352). Cite as: SeismoAtlas, “M2.2 earthquake 42 km ESE of Hōlualoa, Hawaii, United States”, https://seismoatlas.com/earthquake/hv75053352-m2-2-earthquake-42-km-ese-of-holualoa-hawaii-united-states, data from USGS.

JSON: /api/v1/events/hv75053352. SeismoAtlas is not an official warning service.