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SeismoAtlas

M2.6 earthquake 67 km SE of Hōlualoa, Hawaii, United States

A magnitude 2.6 earthquake struck 67 km SE of Hōlualoa, Hawaii, United States at 04:06 local time (14:06 UTC) on 21 Sept 2026, at a depth of 31 km, according to USGS.

Data: USGS · updated 2026-09-23 02:31 UTC · reviewed

Magnitude
2.6micro
local magnitude (Richter) (ml)
Depth
30.7 km
Status
Reviewed
Origin time
2026-09-21 14:06:04 UTC
Local: 21 Sept 2026, 04:06:04 (Pacific/Honolulu)
Epicentre
19.197° N, 155.495° 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. 11,40470 kmINot felt
HiloHawaii, United States · pop. 43,26373 kmINot felt
HonoluluHawaii, United States · pop. 350,964341 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 Survey2.6 ml30.7 km19.20° N, 155.49° W–Reviewed

How big was it?

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

It released roughly the energy of 128 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 31 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M2.6 releases about 34× the energy of M1.6, and its waves are about 10× taller on a seismogram. Energy: 128 kg of TNT vs 4 kg of TNT.

Each square is the energy of one M1.6. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

263 later earthquakes within 30 km; the largest was M3.6 38 days ago. 6 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M2.6

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
4.401.830
4.872.631
11.551.831
12.061.933
13.751.728
15.881.831
19.001.228
20.271.839
23.091.729
28.252.131
28.532.032
29.411.928
32.211.930
40.071.928
43.251.811
44.491.928
44.552.031
45.581.629
47.362.610
48.271.810
50.741.629
50.841.726
50.862.033
51.331.728
51.491.829
51.501.728
53.551.830
55.711.632
56.771.928
57.021.932
58.162.232
58.631.630
60.592.133
60.741.830
63.651.533
66.701.836
73.421.831
77.352.129
80.442.05
80.521.731
80.871.232
83.801.79
84.101.830
86.761.927
87.961.830
90.871.935
91.331.730
91.672.228
93.121.612
108.141.610
109.251.831
112.461.729
121.331.930
121.942.08
123.221.830
125.582.136
125.602.636
130.482.031
139.561.930
140.061.827
147.871.910
150.561.928
154.261.729
156.262.130
161.521.727
164.241.334
164.511.732
165.492.835
165.541.535
165.851.935
166.271.830
166.422.134
166.651.835
166.801.732
167.351.735
176.182.332
177.311.833
177.362.037
180.071.833
186.591.932
188.711.827
191.561.733
201.171.726
201.711.96
202.601.931
204.561.728
209.181.8-1
210.002.2-3
210.902.2-1
216.942.631
221.431.35
223.211.66
227.951.86
232.251.727
236.021.830
239.512.530
240.512.041
241.801.933
242.151.431
247.251.932
248.391.930
250.831.832
251.431.927
252.351.930
253.032.339
255.191.934
262.351.62
263.531.815
266.821.832
266.951.932
267.341.929
269.331.529
271.251.730
271.331.834
271.681.731
273.581.729
276.911.80
279.931.831
284.941.3-1
285.231.533
288.261.830
291.682.127
293.371.832
301.011.732
303.161.829
304.011.633
304.041.610
311.601.728
311.911.829
314.901.829
315.152.542
316.741.931
319.831.727
325.281.632
330.921.910
332.261.830
332.751.738
334.171.830
334.433.628
348.781.843
361.781.19
361.791.929
366.731.934
367.361.827
368.351.633
369.122.243
371.741.832
371.831.833
378.771.829
379.961.68
382.461.831
388.462.442
392.201.732
392.961.933
396.221.82
400.731.827
403.052.261
403.851.742
408.871.948
408.951.950
409.031.82
413.721.929
414.171.928
414.482.032
416.711.727
416.791.829
420.381.927
446.931.732
449.391.631
450.401.133
450.862.241
454.981.731
456.041.928
459.861.828
460.941.942
470.701.828
476.681.741
479.162.132
487.371.928
490.191.830
497.211.833
497.351.811
499.601.740
500.581.730
506.471.830
506.921.931
510.261.631
510.841.733
514.721.440
518.921.734
521.271.829
526.722.049
527.861.927
528.381.734
529.281.733
531.761.832
533.161.930
533.701.635
534.421.934
535.622.034
537.241.934
538.502.232
539.021.930
546.602.027
549.691.80
553.091.930
555.691.428
555.821.728
555.931.933
557.601.737
564.060.92
564.072.227
564.091.729
568.512.433
574.261.935
583.431.735
584.131.835
585.641.845
590.071.828
592.251.829
592.921.830
593.672.10
596.161.831
597.861.89
603.401.833
607.751.434
608.671.10
609.571.731
609.941.77
610.582.134
612.361.70
613.152.031
616.692.132
619.601.431
620.021.729
620.301.129
621.291.728
622.461.89
624.441.50
625.891.433
629.242.131
629.301.10
632.811.831
642.831.729
652.381.930
654.233.0-1
658.692.339
662.031.929
663.561.830
665.141.99
671.251.833
673.451.731
679.541.38
679.931.931
686.172.1-1
686.652.337
689.081.930
690.171.929
695.441.828
695.621.931
698.422.834
706.672.345
710.231.730
  1. 3.643 km SW of Hawaiian Paradise Park, United States10-05 12:31
  2. 3.056 km SSE of Hōlualoa, Hawaii, United States10-18 20:19
  3. 2.875 km SW of Hawaiian Paradise Park, United States10-20 16:31
  4. 2.869 km SE of Hōlualoa, Hawaii, United States09-28 11:35
  5. 2.655 km SW of Hawaiian Paradise Park, United States09-30 15:02
  6. 2.655 km SW of Hawaiian Paradise Park, United States09-26 19:41
  7. 2.667 km SE of Hōlualoa, Hawaii, United States09-21 18:58
  8. 2.671 km SE of Hōlualoa, Hawaii, United States09-23 13:27
  9. 2.542 km ESE of Hōlualoa, Hawaii, United States10-04 17:15
  10. 2.568 km SE of Hōlualoa, Hawaii, United States10-01 13:36
  11. 2.469 km SE of Hōlualoa, Hawaii, United States10-15 06:36
  12. 2.442 km ESE of Hōlualoa, Hawaii, United States10-07 18:33
  13. 2.368 km SW of Hawaiian Paradise Park, United States09-28 22:17
  14. 2.343 km ESE of Hōlualoa, Hawaii, United States10-19 00:47
  15. 2.373 km SSE of Hōlualoa, Hawaii, United States10-02 03:08
  16. 2.339 km ESE of Hōlualoa, Hawaii, United States10-21 00:46
  17. 2.374 km SW of Hawaiian Paradise Park, United States10-20 04:45
  18. 2.241 km SE of Hōlualoa, Hawaii, United States09-30 08:59
  19. 2.261 km SSE of Hōlualoa, Hawaii, United States10-08 09:08
  20. 2.249 km SW of Hawaiian Paradise Park, United States09-25 09:46
  21. 2.276 km SW of Hawaiian Paradise Park, United States09-24 00:15
  22. 2.266 km SW of Hawaiian Paradise Park, United States10-14 00:36
  23. 2.242 km ESE of Hōlualoa, Hawaii, United States09-30 08:06
  24. 2.264 km SW of Hawaiian Paradise Park, United States10-15 02:10
  25. 2.243 km ESE of Hōlualoa, Hawaii, United States10-06 23:13

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Reports on SeismoAtlas

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Event id hv75041242. First recorded here 28 Sept 2026, 17:32:10 UTC. Solutions: USGS · HV (usgs:hv75041242). Cite as: SeismoAtlas, “M2.6 earthquake 67 km SE of Hōlualoa, Hawaii, United States”, https://seismoatlas.com/earthquake/hv75041242-m2-6-earthquake-67-km-se-of-holualoa-hawaii-united-states, data from USGS.

JSON: /api/v1/events/hv75041242. SeismoAtlas is not an official warning service.