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SeismoAtlas

M2.1 earthquake 67 km SE of Hōlualoa, Hawaii, United States

A magnitude 2.1 earthquake struck 67 km SE of Hōlualoa, Hawaii, United States at 21:46 local time (07:46 UTC) on 15 Oct 2026, at a depth of 0 km, according to USGS.

Data: USGS · updated 2026-10-16 19:00 UTC · reviewed

Magnitude
2.1micro
local magnitude (Richter) (ml)
Depth
-0.1 km
Status
Reviewed
Origin time
2026-10-16 07:46:34 UTC
Local: 15 Oct 2026, 21:46:34 (Pacific/Honolulu)
Epicentre
19.190° N, 155.505° 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. 8,53867 kmINot felt
Hawaiian Paradise ParkHawaii, United States · pop. 11,40472 kmINot felt
HiloHawaii, United States · pop. 43,26374 kmINot felt
HonoluluHawaii, United States · pop. 350,964340 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. Likely felt out to about 6 km.

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 mlwas 2.1-0.1 km19.19° N, 155.51° W–Reviewed · 1 revision

How big was it?

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

It released roughly the energy of 19 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 0 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 28× the energy of M1.1, and its waves are about 9.1× taller on a seismogram. Energy: 19 kg of TNT vs 674 g of TNT.

Each square is the energy of one M1.1. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

230 later earthquakes within 30 km; the largest was M3.3 20 days ago. 53 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M2.1

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
2.481.831
4.191.89
9.731.833
14.071.434
15.001.10
15.901.731
16.261.77
16.902.134
18.681.70
19.482.031
23.012.132
25.921.431
26.341.729
26.621.129
27.611.728
28.791.89
30.761.50
32.211.433
35.572.131
35.621.10
39.141.831
49.151.729
58.701.930
60.553.0-1
65.012.339
68.351.929
69.891.830
71.471.99
77.571.833
79.771.731
85.861.38
86.251.931
92.492.1-1
92.982.337
95.401.930
96.491.929
101.771.828
101.941.931
104.752.834
112.992.345
116.551.730
126.391.234
133.151.929
145.801.632
145.851.829
146.392.132
146.931.829
149.451.933
149.681.935
150.051.935
150.241.835
153.191.735
154.531.733
155.761.50
155.762.7-1
158.481.830
164.741.75
165.951.840
168.051.831
173.142.030
174.502.229
175.051.829
176.103.329
177.662.032
177.961.631
178.061.130
180.001.428
182.011.9-1
183.521.830
187.691.86
187.711.97
192.661.949
208.321.936
208.431.940
209.591.99
210.422.133
211.261.928
214.281.847
214.522.132
218.812.339
225.961.228
227.011.830
231.911.740
233.511.931
235.311.731
237.511.832
245.772.129
253.011.828
255.061.829
258.661.830
259.991.831
267.841.732
271.732.133
272.651.931
274.231.731
275.062.530
278.011.733
280.141.230
287.281.729
287.291.833
293.071.233
295.371.828
296.231.829
297.731.828
301.291.78
308.621.832
308.682.026
309.661.831
311.441.929
319.652.232
321.401.830
329.511.930
333.081.91
333.092.733
343.571.830
344.361.930
345.031.832
346.941.838
348.171.928
348.261.332
349.811.730
352.361.832
353.692.132
357.191.830
360.261.931
360.282.00
361.561.79
361.611.930
363.061.932
363.111.829
363.311.430
363.401.934
364.061.636
364.102.130
369.191.71
379.231.846
379.232.052
382.761.932
382.891.930
384.992.432
385.301.728
385.841.828
391.801.913
394.181.827
394.531.829
397.231.829
400.121.67
401.221.331
413.051.829
414.451.726
415.891.831
415.921.732
424.771.927
428.111.726
437.761.829
441.051.731
445.061.97
452.621.729
452.931.931
454.332.440
457.361.329
463.421.828
470.223.1-2
470.641.8-2
474.892.132
476.681.933
476.851.829
480.811.77
483.581.731
484.651.76
486.331.830
492.261.739
494.261.732
503.781.529
503.901.830
504.441.733
509.722.441
509.721.923
510.092.028
515.761.729
521.651.928
527.811.830
533.551.930
534.311.93
536.041.928
536.521.730
538.771.929
541.301.329
542.651.930
542.911.928
544.112.18
545.731.933
549.791.842
556.881.911
561.081.831
561.771.929
566.291.932
573.241.736
573.241.935
573.262.344
573.522.040
573.832.612
574.021.713
579.882.531
579.942.231
588.941.929
594.052.629
595.531.929
597.251.732
599.231.930
603.142.131
604.281.736
604.711.829
605.091.931
609.361.732
609.941.829
613.291.827
613.401.930
623.611.530
625.291.727
626.071.727
640.611.929
644.741.731
648.961.931
656.341.828
657.871.928
658.181.736
659.002.129
659.512.629
661.081.729
  1. 3.369 km SE of Hōlualoa, Hawaii, United States10-23 15:52
  2. 3.143 km SE of Hōlualoa, Hawaii, United States11-04 21:59
  3. 3.056 km SSE of Hōlualoa, Hawaii, United States10-18 20:19
  4. 2.875 km SW of Hawaiian Paradise Park, United States10-20 16:31
  5. 2.771 km SW of Hawaiian Paradise Park, United States10-30 04:52
  6. 2.742 km ESE of Hōlualoa, Hawaii, United States10-22 19:32
  7. 2.667 km SE of Hōlualoa, Hawaii, United States11-12 19:17
  8. 2.672 km SE of Hōlualoa, Hawaii, United States11-09 05:36
  9. 2.661 km SW of Hawaiian Paradise Park, United States11-10 01:49
  10. 2.566 km SE of Hōlualoa, Hawaii, United States10-27 18:50
  11. 2.567 km SE of Hōlualoa, Hawaii, United States11-09 11:39
  12. 2.442 km ESE of Hōlualoa, Hawaii, United States11-04 06:06
  13. 2.468 km SE of Hōlualoa, Hawaii, United States11-01 08:46
  14. 2.443 km ESE of Hōlualoa, Hawaii, United States11-06 13:29
  15. 2.343 km ESE of Hōlualoa, Hawaii, United States10-19 00:47
  16. 2.342 km ESE of Hōlualoa, Hawaii, United States10-25 10:34
  17. 2.339 km ESE of Hōlualoa, Hawaii, United States10-21 00:46
  18. 2.374 km SW of Hawaiian Paradise Park, United States10-20 04:45
  19. 2.368 km SE of Hōlualoa, Hawaii, United States11-09 05:01
  20. 2.270 km SE of Hōlualoa, Hawaii, United States10-23 14:16
  21. 2.268 km SE of Hōlualoa, Hawaii, United States10-29 15:25
  22. 2.267 km SE of Hōlualoa, Hawaii, United States11-09 11:42
  23. 2.168 km SE of Hōlualoa, Hawaii, United States10-27 15:30
  24. 2.169 km SE of Hōlualoa, Hawaii, United States10-25 02:11
  25. 2.167 km SE of Hōlualoa, Hawaii, United States10-31 01:28

Did you feel it?

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Reports on SeismoAtlas

No reports yet.

Event id hv75057697. First recorded here 16 Oct 2026, 07:51:27 UTC. Solutions: USGS · HV (usgs:hv75057697). Cite as: SeismoAtlas, “M2.1 earthquake 67 km SE of Hōlualoa, Hawaii, United States”, https://seismoatlas.com/earthquake/hv75057697-m2-1-earthquake-67-km-se-of-holualoa-hawaii-united-states, data from USGS.

JSON: /api/v1/events/hv75057697. SeismoAtlas is not an official warning service.