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SeismoAtlas

M2.1 earthquake 73 km SW of Hawaiian Paradise Park, United States

A magnitude 2.1 earthquake struck 73 km SW of Hawaiian Paradise Park, United States at 07:47 local time (17:47 UTC) on 3 Oct 2026, at a depth of 27 km, according to USGS.

revised from M1.9

Data: USGS · updated 2026-10-06 02:18 UTC · reviewed

Magnitude
2.1micro
local magnitude (Richter) (ml)
revised from 1.9
Depth
27.4 km
Status
Reviewed
Origin time
2026-10-03 17:47:02 UTC
Local: 3 Oct 2026, 07:47:02 (Pacific/Honolulu)
Epicentre
19.106° N, 155.442° 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
Hawaiian Paradise ParkHawaii, United States · pop. 11,40473 kmINot felt
HōlualoaHawaii, United States · pop. 8,53878 kmINot felt
HiloHawaii, United States · pop. 43,26379 kmINot felt
HonoluluHawaii, United States · pop. 350,964352 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 mlwas 1.927.4 km19.11° N, 155.44° 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 22 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 27 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 33× the energy of M1.1, and its waves are about 10× taller on a seismogram. Energy: 22 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

225 later earthquakes within 30 km; the largest was M3.3 20 days ago. 59 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M2.1

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
1.691.832
9.331.732
11.471.829
12.331.633
12.351.610
19.911.728
20.231.829
23.221.829
25.061.931
28.151.727
33.601.632
39.241.910
40.571.830
42.491.830
57.101.843
70.091.19
70.111.929
75.051.934
75.671.827
76.661.633
80.051.832
80.141.833
87.091.829
90.781.831
100.521.732
101.271.933
109.041.827
117.181.948
117.271.950
117.341.82
122.491.928
122.802.032
125.031.727
125.101.829
128.691.927
155.241.732
157.711.631
158.721.133
163.291.731
164.361.928
168.171.828
179.011.828
195.691.928
198.511.830
205.521.833
205.671.811
207.921.740
208.901.730
214.791.830
215.231.931
218.571.631
219.151.733
223.031.440
227.241.734
229.591.829
236.171.927
236.691.734
237.601.733
240.081.832
241.481.930
242.021.635
242.731.934
243.942.034
245.561.934
246.822.232
247.331.930
254.922.027
261.411.930
264.011.428
264.141.728
264.251.933
265.911.737
272.392.227
272.411.729
276.822.433
282.581.935
291.741.735
292.441.835
293.961.845
298.391.828
300.571.829
301.241.830
301.992.10
304.481.831
311.721.833
316.061.434
318.892.134
320.671.70
321.472.031
325.002.132
327.921.431
328.331.729
328.621.129
329.611.728
330.781.89
332.751.50
334.201.433
336.651.914
337.562.131
337.611.10
341.131.831
355.871.829
360.691.930
362.553.0-1
370.351.929
371.881.830
373.461.99
379.561.833
381.771.731
387.851.38
388.241.931
394.972.337
397.391.930
398.481.929
403.761.828
403.931.931
406.742.834
418.551.730
428.391.234
435.151.929
447.791.632
447.841.829
448.382.132
448.921.829
451.441.933
451.681.935
452.041.935
452.231.835
455.181.735
456.521.733
460.481.830
466.731.75
467.941.840
470.041.831
475.132.030
476.492.229
477.041.829
478.093.329
479.652.032
479.951.631
480.051.130
482.001.428
484.001.9-1
485.511.830
489.681.86
489.701.97
494.661.949
510.311.936
510.431.940
511.581.99
512.412.133
513.251.928
516.281.847
516.522.132
527.951.228
529.001.830
533.911.740
535.501.931
537.311.731
539.501.832
547.762.129
555.001.828
557.051.829
560.651.830
561.991.831
569.831.732
573.722.133
574.641.931
576.221.731
577.052.530
580.011.733
582.141.230
589.271.729
589.281.833
595.061.233
597.361.828
598.221.829
599.721.828
610.611.832
610.672.026
611.651.831
613.431.929
621.642.232
623.391.830
631.511.930
635.081.91
635.082.733
645.561.830
646.351.930
647.021.832
648.931.838
650.161.928
650.251.332
651.811.730
654.351.832
655.682.132
659.191.830
662.251.931
662.272.00
663.551.79
663.601.930
665.051.932
665.101.829
665.301.430
665.391.934
666.051.636
666.092.130
671.181.71
681.221.846
681.232.052
684.751.932
684.881.930
686.992.432
687.291.728
687.841.828
693.801.913
696.171.827
696.521.829
699.231.829
702.111.67
703.211.331
715.041.829
716.441.726
717.881.831
717.921.732
  1. 3.369 km SE of Hōlualoa, Hawaii, United States10-23 15:52
  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. 2.771 km SW of Hawaiian Paradise Park, United States10-30 04:52
  5. 2.566 km SE of Hōlualoa, Hawaii, United States10-27 18:50
  6. 2.469 km SE of Hōlualoa, Hawaii, United States10-15 06:36
  7. 2.468 km SE of Hōlualoa, Hawaii, United States11-01 08:46
  8. 2.374 km SW of Hawaiian Paradise Park, United States10-20 04:45
  9. 2.270 km SE of Hōlualoa, Hawaii, United States10-23 14:16
  10. 2.268 km SE of Hōlualoa, Hawaii, United States10-29 15:25
  11. 2.266 km SW of Hawaiian Paradise Park, United States10-14 00:36
  12. 2.264 km SW of Hawaiian Paradise Park, United States10-15 02:10
  13. 2.168 km SE of Hōlualoa, Hawaii, United States10-27 15:30
  14. 2.169 km SE of Hōlualoa, Hawaii, United States10-25 02:11
  15. 2.167 km SE of Hōlualoa, Hawaii, United States10-31 01:28
  16. 2.169 km SE of Hōlualoa, Hawaii, United States10-17 00:40
  17. 2.177 km SW of Hawaiian Paradise Park, United States10-17 19:20
  18. 2.168 km SE of Hōlualoa, Hawaii, United States10-26 13:32
  19. 2.167 km SE of Hōlualoa, Hawaii, United States10-17 06:47
  20. 2.168 km SE of Hōlualoa, Hawaii, United States10-25 06:17
  21. 2.167 km SE of Hōlualoa, Hawaii, United States10-16 07:46
  22. 2.169 km SE of Hōlualoa, Hawaii, United States10-22 10:10
  23. 2.175 km SW of Hawaiian Paradise Park, United States10-31 11:52
  24. 2.070 km SE of Hōlualoa, Hawaii, United States10-23 12:54
  25. 2.067 km SW of Hawaiian Paradise Park, United States10-31 08:03

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Reports on SeismoAtlas

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Event id hv75049187. First recorded here 3 Oct 2026, 17:50:25 UTC. Solutions: USGS · HV (usgs:hv75049187). Cite as: SeismoAtlas, “M2.1 earthquake 73 km SW of Hawaiian Paradise Park, United States”, https://seismoatlas.com/earthquake/hv75049187-m2-1-earthquake-73-km-sw-of-hawaiian-paradise-park-united-states, data from USGS.

JSON: /api/v1/events/hv75049187. SeismoAtlas is not an official warning service.