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SeismoAtlas

M2.1 earthquake 69 km SE of Hōlualoa, Hawaii, United States

A magnitude 2.1 earthquake struck 69 km SE of Hōlualoa, Hawaii, United States at 00:10 local time (10:10 UTC) on 22 Oct 2026, at a depth of 32 km, according to USGS.

revised from M2.0

Data: USGS · updated 2026-10-26 21:43 UTC · reviewed

Magnitude
2.1micro
duration magnitude (md)
revised from 2.0
Depth
31.9 km
Status
Reviewed
Origin time
2026-10-22 10:10:05 UTC
Local: 22 Oct 2026, 00:10:05 (Pacific/Honolulu)
Epicentre
19.174° N, 155.493° 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. 8,53869 kmINot felt
Hawaiian Paradise ParkHawaii, United States · pop. 11,40472 kmINot felt
HiloHawaii, United States · pop. 43,26375 kmINot felt
HonoluluHawaii, United States · pop. 350,964343 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 mdwas 2.031.9 km19.17° N, 155.49° 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 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 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

183 later earthquakes within 30 km; the largest was M3.3 20 days ago. 51 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M2.1

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
0.531.829
3.061.933
3.291.935
3.661.935
3.851.835
6.791.735
8.141.733
12.091.830
18.351.75
19.561.840
21.661.831
26.752.030
28.102.229
28.651.829
29.713.329
31.272.032
31.571.631
31.671.130
33.611.428
35.621.9-1
37.121.830
41.301.86
41.321.97
46.271.949
61.921.936
62.041.940
63.201.99
64.022.133
64.861.928
67.891.847
68.132.132
79.571.228
80.621.830
85.521.740
87.121.931
88.921.731
91.111.832
99.382.129
106.621.828
108.671.829
112.271.830
113.601.831
121.441.732
125.342.133
126.261.931
127.831.731
128.672.530
131.621.733
133.751.230
140.891.729
140.901.833
146.681.233
148.981.828
149.831.829
151.331.828
154.901.78
162.231.832
162.282.026
163.271.831
165.051.929
173.262.232
175.011.830
183.121.930
186.691.91
186.702.733
197.171.830
197.971.930
198.641.832
200.551.838
201.781.928
201.861.332
203.421.730
205.971.832
207.302.132
210.801.830
213.871.931
213.892.00
215.161.79
215.211.930
216.661.932
216.721.829
216.911.430
217.011.934
217.671.636
217.712.130
222.801.71
232.841.846
232.842.052
236.371.932
236.501.930
238.602.432
238.901.728
239.451.828
245.411.913
247.791.827
248.141.829
250.841.829
253.721.67
254.831.331
266.651.829
268.061.726
269.501.831
269.531.732
278.381.927
281.711.726
291.371.829
294.661.731
298.671.97
306.231.729
306.541.931
310.971.329
317.031.828
323.833.1-2
324.251.8-2
328.502.132
330.291.933
330.451.829
334.411.77
337.191.731
338.251.76
339.941.830
345.871.739
347.871.732
357.391.529
357.511.830
358.041.733
363.332.441
363.331.923
363.702.028
369.371.729
375.251.928
381.421.830
386.871.917
387.161.930
387.921.93
389.651.928
390.131.730
392.381.929
394.911.329
396.261.930
396.521.928
397.722.18
399.331.933
403.401.842
410.491.911
411.081.937
414.691.831
415.381.929
419.901.932
426.851.736
426.851.935
426.862.344
427.132.040
427.442.612
427.631.713
433.482.531
433.542.231
433.591.834
442.551.929
447.662.629
449.131.929
450.861.732
452.831.930
456.752.131
457.891.736
458.321.829
458.701.931
462.971.732
463.551.829
466.901.827
467.011.930
477.221.530
478.901.727
479.681.727
494.221.929
498.341.731
502.571.931
509.951.828
511.481.928
511.781.736
512.602.129
513.122.629
514.691.729
  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. 2.771 km SW of Hawaiian Paradise Park, United States10-30 04:52
  4. 2.667 km SE of Hōlualoa, Hawaii, United States11-12 19:17
  5. 2.672 km SE of Hōlualoa, Hawaii, United States11-09 05:36
  6. 2.661 km SW of Hawaiian Paradise Park, United States11-10 01:49
  7. 2.566 km SE of Hōlualoa, Hawaii, United States10-27 18:50
  8. 2.567 km SE of Hōlualoa, Hawaii, United States11-09 11:39
  9. 2.468 km SE of Hōlualoa, Hawaii, United States11-01 08:46
  10. 2.443 km ESE of Hōlualoa, Hawaii, United States11-06 13:29
  11. 2.368 km SE of Hōlualoa, Hawaii, United States11-09 05:01
  12. 2.270 km SE of Hōlualoa, Hawaii, United States10-23 14:16
  13. 2.268 km SE of Hōlualoa, Hawaii, United States10-29 15:25
  14. 2.267 km SE of Hōlualoa, Hawaii, United States11-09 11:42
  15. 2.168 km SE of Hōlualoa, Hawaii, United States10-27 15:30
  16. 2.169 km SE of Hōlualoa, Hawaii, United States10-25 02:11
  17. 2.167 km SE of Hōlualoa, Hawaii, United States10-31 01:28
  18. 2.158 km SW of Hawaiian Paradise Park, United States11-12 18:46
  19. 2.174 km SW of Hawaiian Paradise Park, United States11-10 10:55
  20. 2.168 km SE of Hōlualoa, Hawaii, United States10-26 13:32
  21. 2.170 km SW of Hawaiian Paradise Park, United States11-05 02:40
  22. 2.152 km WSW of Hawaiian Paradise Park, United States11-07 23:53
  23. 2.168 km SE of Hōlualoa, Hawaii, United States10-25 06:17
  24. 2.175 km SW of Hawaiian Paradise Park, United States10-31 11:52
  25. 2.070 km SE of Hōlualoa, Hawaii, United States10-23 12:54

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Event id hv75062086. First recorded here 22 Oct 2026, 10:15:40 UTC. Solutions: USGS · HV (usgs:hv75062086). Cite as: SeismoAtlas, “M2.1 earthquake 69 km SE of Hōlualoa, Hawaii, United States”, https://seismoatlas.com/earthquake/hv75062086-m2-1-earthquake-69-km-se-of-holualoa-hawaii-united-states, data from USGS.

JSON: /api/v1/events/hv75062086. SeismoAtlas is not an official warning service.