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M2.1 earthquake 41 km SW of Hawaiian Paradise Park, United States

A magnitude 2.1 earthquake struck 41 km SW of Hawaiian Paradise Park, United States at 04:23 local time (14:23 UTC) on 18 Oct 2026, at a depth of 8 km, according to USGS.

revised from M2.4

Data: USGS · updated 2026-10-19 18:28 UTC · reviewed

Magnitude
2.1micro
local magnitude (Richter) (ml)
revised from 2.4
Depth
7.7 km
Status
Reviewed
Origin time
2026-10-18 14:23:18 UTC
Local: 18 Oct 2026, 04:23:18 (Pacific/Honolulu)
Epicentre
19.303° N, 155.215° 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. 11,40441 kmINot felt
HiloHawaii, United States · pop. 43,26349 kmINot felt
HonoluluHawaii, United States · pop. 350,964355 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 2.47.7 km19.30° N, 155.21° 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 24 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 8 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 36× the energy of M1.1, and its waves are about 11× taller on a seismogram. Energy: 24 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

117 later earthquakes within 30 km; the largest was M2.6 2 days ago. 77 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M2.1

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
0.151.48
3.092.16
3.391.70
3.951.62
5.131.76
8.162.241
13.741.929
15.281.830
16.851.99
31.251.38
31.641.931
41.881.929
42.141.80
42.281.736
42.291.942
47.161.828
60.211.46
61.941.730
73.431.23
73.441.63
78.541.929
98.571.735
99.921.733
103.762.22
105.231.97
113.381.51
120.431.829
123.351.631
123.451.130
125.391.428
125.431.81
127.401.9-1
128.231.82
128.571.838
139.171.4-1
146.751.838
156.931.76
159.671.847
171.351.228
171.501.937
177.301.740
178.032.11
178.411.9-1
178.901.931
190.871.840
196.351.835
198.401.828
203.301.841
210.691.939
218.041.931
222.671.325
225.531.230
238.461.233
243.111.828
246.141.47
254.062.026
256.831.929
266.141.41
266.152.01
274.901.930
277.541.84
278.471.91
290.861.90
292.331.838
293.561.928
305.672.00
306.941.79
308.501.829
308.691.430
312.291.92
321.121.72
321.132.22
324.621.846
324.622.052
326.621.836
339.571.827
342.621.829
345.501.67
356.892.02
358.431.829
359.841.726
361.311.732
370.161.927
386.441.731
398.321.931
398.932.02
402.751.329
406.992.02
422.231.829
430.031.76
431.721.830
439.422.51
449.171.529
455.482.028
467.031.928
471.342.338
478.941.930
479.701.93
484.161.929
486.691.329
488.041.930
488.301.928
489.502.18
495.181.842
511.681.932
518.981.811
539.442.629
542.641.732
544.611.930
554.751.732
555.331.829
571.461.727
582.761.93
586.001.929
599.752.036
603.261.928
604.382.129
  1. 2.661 km SW of Hawaiian Paradise Park, United States11-10 01:49
  2. 2.540 km SW of Hawaiian Paradise Park, United States11-05 21:48
  3. 2.346 km SSW of Hawaiian Paradise Park, United States11-07 05:43
  4. 2.247 km SSW of Hawaiian Paradise Park, United States10-18 22:32
  5. 2.239 km SW of Hawaiian Paradise Park, United States10-31 23:31
  6. 2.243 km SW of Hawaiian Paradise Park, United States10-22 22:08
  7. 2.137 km SW of Hawaiian Paradise Park, United States10-18 17:28
  8. 2.158 km SW of Hawaiian Paradise Park, United States11-12 18:46
  9. 2.152 km WSW of Hawaiian Paradise Park, United States11-07 23:53
  10. 2.137 km SW of Hawaiian Paradise Park, United States10-26 00:25
  11. 2.067 km SW of Hawaiian Paradise Park, United States10-31 08:03
  12. 2.040 km SW of Hawaiian Paradise Park, United States10-29 16:32
  13. 2.034 km SSW of Hawaiian Paradise Park, United States11-04 13:22
  14. 2.058 km SW of Hawaiian Paradise Park, United States11-06 13:51
  15. 2.039 km SW of Hawaiian Paradise Park, United States11-02 11:16
  16. 2.019 km SW of Hawaiian Paradise Park, United States11-12 14:08
  17. 2.062 km SW of Hawaiian Paradise Park, United States10-29 04:27
  18. 2.056 km SSW of Hawaiian Paradise Park, United States11-01 03:00
  19. 2.040 km SW of Hawaiian Paradise Park, United States11-04 05:19
  20. 1.937 km SW of Hawaiian Paradise Park, United States10-26 00:47
  21. 1.969 km SW of Hawaiian Paradise Park, United States10-27 16:25
  22. 1.964 km SW of Hawaiian Paradise Park, United States11-12 17:38
  23. 1.962 km SW of Hawaiian Paradise Park, United States11-08 22:04
  24. 1.951 km SW of Hawaiian Paradise Park, United States10-19 04:07
  25. 1.939 km SW of Hawaiian Paradise Park, United States10-31 14:40

Did you feel it?

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Reports on SeismoAtlas

No reports yet.

Event id hv75060391. First recorded here 18 Oct 2026, 14:27:00 UTC. Solutions: USGS · HV (usgs:hv75060391). Cite as: SeismoAtlas, “M2.1 earthquake 41 km SW of Hawaiian Paradise Park, United States”, https://seismoatlas.com/earthquake/hv75060391-m2-1-earthquake-41-km-sw-of-hawaiian-paradise-park-united-states, data from USGS.

JSON: /api/v1/events/hv75060391. SeismoAtlas is not an official warning service.