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M2.1 earthquake 42 km ESE of Hōlualoa, Hawaii, United States

A magnitude 2.1 earthquake struck 42 km ESE of Hōlualoa, Hawaii, United States at 03:15 local time (13:15 UTC) on 11 Oct 2026, at a depth of 32 km, according to USGS.

Data: USGS · updated 2026-10-14 20:13 UTC · reviewed

Magnitude
2.1micro
local magnitude (Richter) (ml)
Depth
32.5 km
Status
Reviewed
Origin time
2026-10-11 13:15:46 UTC
Local: 11 Oct 2026, 03:15:46 (Pacific/Honolulu)
Epicentre
19.430° N, 155.605° 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. 43,26363 kmINot felt
HonoluluHawaii, United States · pop. 350,964315 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 Survey2.1 ml32.5 km19.43° N, 155.61° W–Reviewed

How big was it?

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

It released roughly the energy of 25 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 32 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M2.1 releases about 27× the energy of M1.2, and its waves are about 8.9× taller on a seismogram. Energy: 25 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

124 later earthquakes within 30 km; the largest was M3.1 8 days ago. 31 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M2.1

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
21.421.730
31.671.733
33.542.137
39.761.734
47.562.049
58.081.934
59.342.232
59.861.930
62.111.50
70.531.80
76.531.428
76.661.728
82.812.139
103.231.820
110.911.828
113.602.139
114.512.10
118.701.89
124.241.833
128.591.434
129.511.10
130.771.77
133.201.70
137.522.132
140.441.431
140.851.729
141.141.129
142.131.728
145.271.50
146.731.433
153.372.322
153.651.831
162.551.71
163.671.729
172.210.90
173.211.930
175.073.0-1
179.532.339
182.871.929
184.401.830
185.981.99
192.081.833
194.291.731
200.381.38
200.771.931
207.012.1-1
209.911.930
211.001.929
227.512.345
231.071.730
232.111.713
247.671.929
252.532.235
263.301.710
270.271.50
270.272.7-1
279.251.75
287.051.83
289.561.829
294.521.428
298.031.830
302.201.86
302.221.97
304.632.3-1
324.101.99
325.771.928
328.801.847
329.042.132
333.322.339
341.521.830
348.021.931
349.831.731
369.571.829
382.722.49
389.572.530
394.032.60
407.581.233
412.241.828
415.801.78
434.172.232
466.871.832
468.202.132
474.792.00
477.821.430
481.071.62
481.111.92
481.351.72
483.701.71
497.411.930
499.512.432
511.280.83
514.631.67
515.731.331
533.472.122
559.571.97
565.441.112
568.842.440
571.871.329
584.743.1-2
585.161.8-2
595.321.77
599.161.76
600.851.830
608.781.732
618.411.830
621.552.473
624.232.441
624.241.923
632.071.60
636.161.928
637.072.117
648.071.930
648.821.93
649.461.950
650.561.928
651.041.730
655.821.329
657.161.930
658.622.18
667.992.50
674.292.415
694.392.531
694.452.231
713.741.930
  1. 3.143 km SE of Hōlualoa, Hawaii, United States11-04 21:59
  2. 3.056 km SSE of Hōlualoa, Hawaii, United States10-18 20:19
  3. 2.742 km ESE of Hōlualoa, Hawaii, United States10-22 19:32
  4. 2.646 km WSW of Hilo, Hawaii, United States10-27 23:17
  5. 2.566 km SE of Hōlualoa, Hawaii, United States10-27 18:50
  6. 2.547 km SW of Hilo, Hawaii, United States11-08 09:14
  7. 2.567 km SE of Hōlualoa, Hawaii, United States11-09 11:39
  8. 2.442 km ESE of Hōlualoa, Hawaii, United States11-04 06:06
  9. 2.468 km SE of Hōlualoa, Hawaii, United States11-01 08:46
  10. 2.435 km SSE of Hōlualoa, Hawaii, United States11-08 15:33
  11. 2.429 km SSE of Hōlualoa, Hawaii, United States11-06 10:48
  12. 2.439 km ESE of Hōlualoa, Hawaii, United States10-27 11:58
  13. 2.443 km ESE of Hōlualoa, Hawaii, United States11-06 13:29
  14. 2.343 km ESE of Hōlualoa, Hawaii, United States10-19 00:47
  15. 2.342 km ESE of Hōlualoa, Hawaii, United States10-25 10:34
  16. 2.339 km ESE of Hōlualoa, Hawaii, United States10-21 00:46
  17. 2.314 km SE of Hōlualoa, Hawaii, United States10-17 22:38
  18. 2.348 km WSW of Hilo, Hawaii, United States10-24 05:53
  19. 2.268 km SE of Hōlualoa, Hawaii, United States10-29 15:25
  20. 2.238 km ESE of Hōlualoa, Hawaii, United States10-22 01:47
  21. 2.266 km SW of Hawaiian Paradise Park, United States10-14 00:36
  22. 2.267 km SE of Hōlualoa, Hawaii, United States11-09 11:42
  23. 2.138 km SE of Hōlualoa, Hawaii, United States10-16 06:51
  24. 2.167 km SE of Hōlualoa, Hawaii, United States10-31 01:28
  25. 2.117 km SE of Hōlualoa, Hawaii, United States11-02 18:44

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 hv75054012. First recorded here 14 Oct 2026, 20:55:49 UTC. Solutions: USGS · HV (usgs:hv75054012). Cite as: SeismoAtlas, “M2.1 earthquake 42 km ESE of Hōlualoa, Hawaii, United States”, https://seismoatlas.com/earthquake/hv75054012-m2-1-earthquake-42-km-ese-of-holualoa-hawaii-united-states, data from USGS.

JSON: /api/v1/events/hv75054012. SeismoAtlas is not an official warning service.