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M2.1 earthquake 75 km SW of Hawaiian Paradise Park, United States

A magnitude 2.1 earthquake struck 75 km SW of Hawaiian Paradise Park, United States at 01:52 local time (11:52 UTC) on 31 Oct 2026, at a depth of 30 km, according to USGS.

revised from M2.2

Data: USGS · updated 2026-11-03 19:29 UTC · reviewed

Magnitude
2.1micro
local magnitude (Richter) (ml)
revised from 2.2
Depth
29.7 km
Status
Reviewed
Origin time
2026-10-31 11:52:40 UTC
Local: 31 Oct 2026, 01:52:40 (Pacific/Honolulu)
Epicentre
19.035° N, 155.369° 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. 11,40475 kmINot felt
HiloHawaii, United States · pop. 43,26383 kmINot felt
HonoluluHawaii, United States · pop. 350,964363 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 2.229.7 km19.03° N, 155.37° 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 19 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 30 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 28× the energy of M1.1, and its waves are about 9.1× taller on a seismogram. Energy: 19 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

88 later earthquakes within 30 km; the largest was M2.6 4 h 55 min ago. 58 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M2.1

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
15.131.846
15.132.052
18.661.932
18.791.930
20.892.432
21.191.728
21.741.828
27.701.913
30.081.827
30.431.829
33.131.829
37.121.331
48.941.829
51.791.831
51.821.732
60.671.927
64.001.726
73.661.829
76.951.731
88.521.729
88.831.931
93.261.329
99.321.828
101.732.036
110.792.132
112.581.933
112.741.829
119.481.731
122.231.830
128.161.739
130.161.732
139.681.529
139.801.830
140.331.733
145.992.028
151.661.729
163.711.830
169.161.917
169.451.930
170.211.93
171.941.928
172.421.730
174.671.929
177.201.329
178.551.930
178.811.928
181.631.933
185.691.842
192.781.911
193.371.937
196.981.831
197.671.929
199.892.435
202.191.932
209.141.736
209.141.935
209.152.344
209.422.040
209.732.612
209.921.713
215.772.531
215.832.231
215.881.834
224.841.929
229.952.629
231.421.929
235.121.930
239.042.131
240.181.736
240.611.829
240.991.931
245.261.732
245.841.829
249.191.827
249.301.930
259.511.530
261.191.727
261.971.727
276.511.929
280.631.731
284.861.931
288.962.628
292.241.828
293.771.928
294.071.736
294.892.129
295.412.629
296.981.729
  1. 2.667 km SE of Hōlualoa, Hawaii, United States11-12 19:17
  2. 2.691 km SSW of Hawaiian Paradise Park, United States11-12 12:50
  3. 2.672 km SE of Hōlualoa, Hawaii, United States11-09 05:36
  4. 2.661 km SW of Hawaiian Paradise Park, United States11-10 01:49
  5. 2.567 km SE of Hōlualoa, Hawaii, United States11-09 11:39
  6. 2.498 km SSE of Hōlualoa, Hawaii, United States11-08 19:46
  7. 2.468 km SE of Hōlualoa, Hawaii, United States11-01 08:46
  8. 2.368 km SE of Hōlualoa, Hawaii, United States11-09 05:01
  9. 2.267 km SE of Hōlualoa, Hawaii, United States11-09 11:42
  10. 2.158 km SW of Hawaiian Paradise Park, United States11-12 18:46
  11. 2.174 km SW of Hawaiian Paradise Park, United States11-10 10:55
  12. 2.170 km SW of Hawaiian Paradise Park, United States11-05 02:40
  13. 2.095 km SSE of Hōlualoa, Hawaii, United States11-04 17:36
  14. 2.058 km SW of Hawaiian Paradise Park, United States11-06 13:51
  15. 2.072 km SW of Hawaiian Paradise Park, United States11-09 05:17
  16. 2.056 km SSW of Hawaiian Paradise Park, United States11-01 03:00
  17. 1.964 km SW of Hawaiian Paradise Park, United States11-12 17:38
  18. 1.967 km SE of Hōlualoa, Hawaii, United States11-07 15:49
  19. 1.962 km SW of Hawaiian Paradise Park, United States11-08 22:04
  20. 1.981 km SSW of Hawaiian Paradise Park, United States11-01 06:32
  21. 1.970 km SW of Hawaiian Paradise Park, United States11-09 05:01
  22. 1.967 km SE of Hōlualoa, Hawaii, United States11-12 08:44
  23. 1.957 km SW of Hawaiian Paradise Park, United States11-07 22:25
  24. 1.969 km SE of Hōlualoa, Hawaii, United States11-08 01:30
  25. 1.974 km SE of Hōlualoa, Hawaii, United States11-08 12:39

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Reports on SeismoAtlas

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Event id hv75066756. First recorded here 31 Oct 2026, 11:57:57 UTC. Solutions: USGS · HV (usgs:hv75066756). Cite as: SeismoAtlas, “M2.1 earthquake 75 km SW of Hawaiian Paradise Park, United States”, https://seismoatlas.com/earthquake/hv75066756-m2-1-earthquake-75-km-sw-of-hawaiian-paradise-park-united-states, data from USGS.

JSON: /api/v1/events/hv75066756. SeismoAtlas is not an official warning service.