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SeismoAtlas

M4.1 earthquake 71 km SE of Hōlualoa, Hawaii, United States

A magnitude 4.1 earthquake struck 71 km SE of Hōlualoa, Hawaii, United States at 20:36 local time (06:36 UTC) on 17 Sept 2026, at a depth of 12 km, according to USGS.

106 reports to USGS “Did You Feel It?”

Data: USGS · updated 2026-09-19 21:03 UTC · reviewed

Magnitude
4.1light
local magnitude (Richter) (ml)
Depth
12.4 km
Status
Reviewed
Origin time
2026-09-18 06:36:43 UTC
Local: 17 Sept 2026, 20:36:43 (Pacific/Honolulu)
Epicentre
19.158° N, 155.476° 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. 8,53871 kmIIWeak
Hawaiian Paradise ParkHawaii, United States · pop. 11,40472 kmIIWeak
HiloHawaii, United States · pop. 43,26375 kmIIWeak
HonoluluHawaii, United States · pop. 350,964345 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 45 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 Survey4.1 ml12.4 km19.16° N, 155.48° W–Reviewed

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How big was it?

Widely felt near the epicentre: rattling windows and objects. Significant damage is unlikely.

It released roughly the energy of 19 t 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 12 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M4.1 releases about 28× the energy of M3.1, and its waves are about 9.1× taller on a seismogram. Energy: 19 t of TNT vs 674 kg of TNT.

Each square is the energy of one M3.1. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

233 later earthquakes within 30 km; the largest was M3.6 38 days ago. 4 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M4.1

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
2.822.510
4.723.014
20.872.814
32.802.612
79.492.631
83.891.830
84.362.631
91.031.831
91.541.933
93.241.728
95.371.831
98.491.228
99.761.839
102.581.729
107.742.131
108.022.032
108.901.928
111.701.930
119.561.928
122.741.811
123.981.928
124.042.031
125.071.629
126.852.610
127.761.810
130.231.629
130.321.726
130.352.033
130.821.728
130.981.829
130.991.728
133.041.830
135.201.632
136.261.928
136.511.932
137.652.232
138.121.630
140.082.133
140.231.830
143.141.533
146.181.836
152.911.831
156.842.129
159.932.05
160.001.731
160.361.232
163.291.79
163.591.830
166.251.927
167.451.830
170.361.935
170.821.730
171.162.228
172.611.612
187.631.610
188.741.831
191.951.729
200.821.930
201.432.08
202.711.830
205.072.136
205.092.636
209.972.031
219.051.930
219.551.827
227.361.910
230.051.928
233.751.729
235.752.130
241.011.727
243.731.334
244.001.732
244.982.835
245.031.535
245.341.935
245.751.830
245.912.134
246.141.835
246.291.732
246.841.735
255.672.332
256.791.833
256.852.037
259.561.833
266.081.932
268.201.827
271.051.733
280.661.726
281.191.96
282.091.931
284.051.728
296.432.631
300.921.35
302.691.66
307.441.86
311.741.727
315.511.830
319.002.530
320.002.041
321.291.933
321.641.431
326.731.932
327.881.930
330.321.832
330.921.927
331.841.930
332.522.339
334.681.934
343.021.815
346.311.832
346.441.932
346.831.929
348.821.529
350.741.730
350.821.834
351.171.731
353.071.729
356.401.80
359.421.831
364.721.533
367.741.830
371.172.127
372.861.832
380.501.732
382.651.829
383.501.633
383.531.610
391.091.728
391.401.829
394.391.829
396.231.931
399.321.727
404.771.632
410.411.910
411.751.830
413.661.830
413.923.628
428.271.843
441.271.19
441.281.929
446.221.934
446.851.827
447.841.633
451.221.832
451.311.833
458.261.829
459.451.68
461.951.831
471.691.732
472.441.933
480.221.827
482.542.261
488.361.948
488.441.950
488.521.82
493.211.929
493.661.928
493.972.032
496.201.727
496.281.829
499.871.927
526.421.732
528.881.631
529.891.133
534.471.731
535.531.928
539.351.828
550.191.828
566.861.928
569.681.830
576.701.833
576.841.811
579.091.740
580.071.730
585.961.830
586.401.931
589.751.631
590.321.733
594.211.440
598.411.734
600.761.829
606.212.049
607.351.927
607.871.734
608.771.733
611.251.832
612.651.930
613.191.635
613.901.934
615.112.034
616.731.934
617.992.232
618.511.930
626.092.027
629.181.80
632.581.930
635.181.428
635.311.728
635.421.933
637.091.737
643.550.92
643.562.227
643.581.729
648.002.433
653.751.935
662.921.735
663.611.835
665.131.845
669.561.828
671.741.829
672.411.830
673.162.10
675.651.831
677.351.89
682.891.833
687.241.434
689.061.731
689.421.77
690.072.134
691.851.70
692.642.031
696.182.132
699.091.431
699.501.729
699.791.129
700.781.728
701.951.89
703.921.50
705.381.433
707.821.914
708.732.131
708.781.10
712.301.831
  1. 3.643 km SW of Hawaiian Paradise Park, United States10-05 12:31
  2. 3.070 km SE of Hōlualoa, Hawaii, United States09-18 11:19
  3. 2.870 km SE of Hōlualoa, Hawaii, United States09-19 03:28
  4. 2.869 km SE of Hōlualoa, Hawaii, United States09-28 11:35
  5. 2.667 km SE of Hōlualoa, Hawaii, United States09-21 14:06
  6. 2.655 km SW of Hawaiian Paradise Park, United States09-30 15:02
  7. 2.655 km SW of Hawaiian Paradise Park, United States09-26 19:41
  8. 2.671 km SE of Hōlualoa, Hawaii, United States09-19 15:24
  9. 2.667 km SE of Hōlualoa, Hawaii, United States09-21 18:58
  10. 2.671 km SE of Hōlualoa, Hawaii, United States09-23 13:27
  11. 2.570 km SE of Hōlualoa, Hawaii, United States09-18 09:26
  12. 2.568 km SE of Hōlualoa, Hawaii, United States10-01 13:36
  13. 2.469 km SE of Hōlualoa, Hawaii, United States10-15 06:36
  14. 2.368 km SW of Hawaiian Paradise Park, United States09-28 22:17
  15. 2.373 km SSE of Hōlualoa, Hawaii, United States10-02 03:08
  16. 2.261 km SSE of Hōlualoa, Hawaii, United States10-08 09:08
  17. 2.249 km SW of Hawaiian Paradise Park, United States09-25 09:46
  18. 2.276 km SW of Hawaiian Paradise Park, United States09-24 00:15
  19. 2.266 km SW of Hawaiian Paradise Park, United States10-14 00:36
  20. 2.264 km SW of Hawaiian Paradise Park, United States10-15 02:10
  21. 2.167 km SE of Hōlualoa, Hawaii, United States09-24 19:27
  22. 2.170 km SE of Hōlualoa, Hawaii, United States09-22 18:21
  23. 2.171 km SE of Hōlualoa, Hawaii, United States09-28 12:31
  24. 2.173 km SW of Hawaiian Paradise Park, United States10-03 17:47
  25. 2.169 km SE of Hōlualoa, Hawaii, United States10-17 00:40

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

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USGS “Did You Feel It?” has 106 reports: add yours at USGS.

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Event id hv75039212. First recorded here 28 Sept 2026, 17:32:11 UTC. Solutions: USGS · HV (usgs:hv75039212). Cite as: SeismoAtlas, “M4.1 earthquake 71 km SE of Hōlualoa, Hawaii, United States”, https://seismoatlas.com/earthquake/hv75039212-m4-1-earthquake-71-km-se-of-holualoa-hawaii-united-states, data from USGS.

JSON: /api/v1/events/hv75039212. SeismoAtlas is not an official warning service.