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SeismoAtlas

M2.5 earthquake 70 km SE of Hōlualoa, Hawaii, United States

A magnitude 2.5 earthquake struck 70 km SE of Hōlualoa, Hawaii, United States at 23:26 local time (09:26 UTC) on 17 Sept 2026, at a depth of 10 km, according to USGS.

1 reports to USGS “Did You Feel It?”

Data: USGS · updated 2026-09-18 20:59 UTC · reviewed

Magnitude
2.5micro
local magnitude (Richter) (ml)
Depth
10.5 km
Status
Reviewed
Origin time
2026-09-18 09:26:11 UTC
Local: 17 Sept 2026, 23:26:11 (Pacific/Honolulu)
Epicentre
19.165° N, 155.484° 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. 8,53870 kmINot felt
Hawaiian Paradise ParkHawaii, United States · pop. 11,40472 kmINot felt
HiloHawaii, United States · pop. 43,26375 kmINot felt
HonoluluHawaii, United States · pop. 350,964344 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 Survey2.5 ml10.5 km19.16° N, 155.48° W–Reviewed

How big was it?

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

It released roughly the energy of 91 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 10 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M2.5 releases about 34× the energy of M1.5, and its waves are about 10× taller on a seismogram. Energy: 91 kg of TNT vs 3 kg of TNT.

Each square is the energy of one M1.5. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

234 later earthquakes within 30 km; the largest was M3.6 38 days ago. 5 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M2.5

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
1.893.014
18.042.814
29.982.612
76.662.631
81.061.830
81.532.631
88.211.831
88.721.933
90.421.728
92.541.831
95.661.228
96.931.839
99.751.729
104.912.131
105.192.032
106.071.928
108.871.930
116.741.928
119.911.811
121.161.928
121.212.031
122.251.629
124.022.610
124.931.810
127.401.629
127.501.726
127.532.033
128.001.728
128.151.829
128.171.728
130.211.830
132.381.632
133.431.928
133.681.932
134.832.232
135.291.630
137.252.133
137.401.830
140.311.533
143.361.836
150.091.831
154.022.129
157.102.05
157.181.731
157.541.232
160.461.79
160.761.830
163.421.927
164.631.830
167.531.935
168.001.730
168.342.228
169.781.612
184.801.610
185.921.831
189.121.729
198.001.930
198.612.08
199.881.830
202.252.136
202.262.636
207.142.031
216.231.930
216.731.827
224.531.910
227.231.928
230.931.729
232.922.130
238.191.727
240.901.334
241.171.732
242.152.835
242.211.535
242.521.935
242.931.830
243.092.134
243.311.835
243.471.732
244.021.735
252.852.332
253.971.833
254.032.037
256.731.833
263.261.932
265.371.827
268.221.733
277.831.726
278.371.96
279.271.931
281.221.728
293.602.631
298.101.35
299.871.66
304.611.86
308.921.727
312.681.830
316.172.530
317.172.041
318.471.933
318.811.431
323.911.932
325.051.930
327.501.832
328.091.927
329.021.930
329.702.339
331.861.934
340.191.815
343.481.832
343.621.932
344.011.929
345.991.529
347.911.730
348.001.834
348.341.731
350.241.729
353.571.80
356.601.831
361.901.533
364.921.830
368.352.127
370.041.832
377.681.732
379.821.829
380.681.633
380.701.610
388.261.728
388.581.829
391.571.829
393.411.931
396.501.727
401.951.632
407.581.910
408.921.830
410.841.830
411.093.628
425.441.843
438.441.19
438.451.929
443.391.934
444.021.827
445.011.633
448.401.832
448.491.833
455.441.829
456.631.68
459.131.831
468.871.732
469.621.933
477.391.827
479.712.261
485.531.948
485.611.950
485.691.82
490.381.929
490.841.928
491.152.032
493.371.727
493.451.829
497.041.927
523.591.732
526.061.631
527.061.133
531.641.731
532.711.928
536.521.828
547.361.828
553.341.741
564.041.928
566.861.830
573.871.833
574.021.811
576.271.740
577.241.730
583.141.830
583.581.931
586.921.631
587.501.733
591.381.440
595.591.734
597.941.829
603.382.049
604.521.927
605.041.734
605.941.733
608.421.832
609.831.930
610.361.635
611.081.934
612.282.034
613.911.934
615.172.232
615.681.930
623.272.027
626.361.80
629.761.930
632.351.428
632.491.728
632.591.933
634.261.737
640.720.92
640.732.227
640.751.729
645.172.433
650.931.935
660.091.735
660.791.835
662.311.845
666.741.828
668.921.829
669.591.830
670.342.10
672.821.831
674.531.89
680.071.833
684.411.434
686.241.731
686.601.77
687.242.134
689.021.70
689.822.031
693.352.132
696.261.431
696.681.729
696.961.129
697.951.728
699.131.89
701.101.50
702.551.433
705.001.914
705.912.131
705.961.10
709.481.831
719.491.729
  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. 2.568 km SE of Hōlualoa, Hawaii, United States10-01 13:36
  12. 2.469 km SE of Hōlualoa, Hawaii, United States10-15 06:36
  13. 2.368 km SW of Hawaiian Paradise Park, United States09-28 22:17
  14. 2.373 km SSE of Hōlualoa, Hawaii, United States10-02 03:08
  15. 2.261 km SSE of Hōlualoa, Hawaii, United States10-08 09:08
  16. 2.249 km SW of Hawaiian Paradise Park, United States09-25 09:46
  17. 2.276 km SW of Hawaiian Paradise Park, United States09-24 00:15
  18. 2.266 km SW of Hawaiian Paradise Park, United States10-14 00:36
  19. 2.264 km SW of Hawaiian Paradise Park, United States10-15 02:10
  20. 2.167 km SE of Hōlualoa, Hawaii, United States09-24 19:27
  21. 2.170 km SE of Hōlualoa, Hawaii, United States09-22 18:21
  22. 2.171 km SE of Hōlualoa, Hawaii, United States09-28 12:31
  23. 2.173 km SW of Hawaiian Paradise Park, United States10-03 17:47
  24. 2.169 km SE of Hōlualoa, Hawaii, United States10-17 00:40
  25. 2.177 km SW of Hawaiian Paradise Park, United States10-17 19:20

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.

USGS “Did You Feel It?” has 1 reports: add yours at USGS.

Event id hv75039307. First recorded here 28 Sept 2026, 17:32:11 UTC. Solutions: USGS · HV (usgs:hv75039307). Cite as: SeismoAtlas, “M2.5 earthquake 70 km SE of Hōlualoa, Hawaii, United States”, https://seismoatlas.com/earthquake/hv75039307-m2-5-earthquake-70-km-se-of-holualoa-hawaii-united-states, data from USGS.

JSON: /api/v1/events/hv75039307. SeismoAtlas is not an official warning service.