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M2.5 earthquake 66 km SE of Hōlualoa, Hawaii, United States

A magnitude 2.5 earthquake struck 66 km SE of Hōlualoa, Hawaii, United States at 08:50 local time (18:50 UTC) on 27 Oct 2026, at a depth of 30 km, according to USGS.

Data: USGS · updated 2026-10-27 19:19 UTC · reviewed

Magnitude
2.5micro
local magnitude (Richter) (ml)
Depth
30.4 km
Status
Reviewed
Origin time
2026-10-27 18:50:08 UTC
Local: 27 Oct 2026, 08:50:08 (Pacific/Honolulu)
Epicentre
19.192° N, 155.519° 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. 8,53866 kmINot felt
Kailua-KonaHawaii, United States · pop. 11,97571 kmINot felt
HiloHawaii, United States · pop. 43,26375 kmINot felt
HonoluluHawaii, United States · pop. 350,964339 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 ml30.4 km19.19° N, 155.52° 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 97 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.

M2.5 releases about 36× the energy of M1.5, and its waves are about 11× taller on a seismogram. Energy: 97 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

133 later earthquakes within 30 km; the largest was M3.1 8 days ago. 56 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M2.5

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
2.951.733
5.081.230
12.221.729
12.231.833
18.011.233
20.311.828
21.171.829
22.671.828
26.231.78
33.561.832
33.622.026
34.601.831
36.381.929
44.592.232
46.341.830
54.461.930
58.032.733
68.511.830
69.301.930
69.971.832
71.881.838
73.111.928
73.201.332
74.751.730
77.301.832
78.632.132
82.131.830
85.201.931
85.222.00
86.501.79
86.551.930
88.001.932
88.051.829
88.251.430
88.341.934
89.001.636
89.042.130
94.131.71
104.171.846
104.182.052
107.701.932
107.831.930
109.932.432
110.241.728
110.791.828
116.741.913
119.121.827
119.471.829
122.171.829
125.061.67
126.161.331
137.991.829
139.391.726
140.831.831
140.861.732
149.711.927
153.051.726
162.701.829
165.991.731
170.001.97
177.561.729
177.871.931
179.272.440
182.301.329
188.361.828
195.163.1-2
195.581.8-2
199.832.132
201.621.933
201.791.829
205.751.77
208.521.731
209.591.76
211.271.830
217.211.739
219.201.732
228.721.529
228.841.830
229.381.733
234.662.441
234.661.923
235.032.028
240.701.729
246.591.928
252.751.830
258.491.930
259.251.93
260.981.928
261.461.730
263.711.929
266.241.329
267.591.930
267.851.928
269.052.18
270.671.933
274.741.842
281.821.911
286.021.831
286.711.929
291.231.932
298.181.736
298.181.935
298.202.344
298.462.040
298.772.612
298.961.713
304.822.531
304.882.231
313.881.929
318.992.629
320.471.929
322.201.732
324.171.930
328.082.131
329.221.736
329.651.829
330.031.931
334.301.732
334.881.829
338.231.827
338.341.930
348.551.530
350.231.727
351.011.727
365.551.929
369.681.731
373.901.931
381.281.828
382.811.928
383.121.736
383.942.129
384.452.629
386.021.729
  1. 3.143 km SE of Hōlualoa, Hawaii, United States11-04 21:59
  2. 2.771 km SW of Hawaiian Paradise Park, United States10-30 04:52
  3. 2.667 km SE of Hōlualoa, Hawaii, United States11-12 19:17
  4. 2.672 km SE of Hōlualoa, Hawaii, United States11-09 05:36
  5. 2.661 km SW of Hawaiian Paradise Park, United States11-10 01:49
  6. 2.567 km SE of Hōlualoa, Hawaii, United States11-09 11:39
  7. 2.442 km ESE of Hōlualoa, Hawaii, United States11-04 06:06
  8. 2.468 km SE of Hōlualoa, Hawaii, United States11-01 08:46
  9. 2.443 km ESE of Hōlualoa, Hawaii, United States11-06 13:29
  10. 2.368 km SE of Hōlualoa, Hawaii, United States11-09 05:01
  11. 2.268 km SE of Hōlualoa, Hawaii, United States10-29 15:25
  12. 2.267 km SE of Hōlualoa, Hawaii, United States11-09 11:42
  13. 2.167 km SE of Hōlualoa, Hawaii, United States10-31 01:28
  14. 2.158 km SW of Hawaiian Paradise Park, United States11-12 18:46
  15. 2.174 km SW of Hawaiian Paradise Park, United States11-10 10:55
  16. 2.170 km SW of Hawaiian Paradise Park, United States11-05 02:40
  17. 2.152 km WSW of Hawaiian Paradise Park, United States11-07 23:53
  18. 2.175 km SW of Hawaiian Paradise Park, United States10-31 11:52
  19. 2.067 km SW of Hawaiian Paradise Park, United States10-31 08:03
  20. 2.058 km SW of Hawaiian Paradise Park, United States11-06 13:51
  21. 2.072 km SW of Hawaiian Paradise Park, United States11-09 05:17
  22. 2.062 km SW of Hawaiian Paradise Park, United States10-29 04:27
  23. 2.056 km SSW of Hawaiian Paradise Park, United States11-01 03:00
  24. 1.964 km SW of Hawaiian Paradise Park, United States11-12 17:38
  25. 1.975 km SW of Hawaiian Paradise Park, United States10-31 10:49

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.

Event id hv75064501. First recorded here 27 Oct 2026, 18:54:13 UTC. Solutions: USGS · HV (usgs:hv75064501). Cite as: SeismoAtlas, “M2.5 earthquake 66 km SE of Hōlualoa, Hawaii, United States”, https://seismoatlas.com/earthquake/hv75064501-m2-5-earthquake-66-km-se-of-holualoa-hawaii-united-states, data from USGS.

JSON: /api/v1/events/hv75064501. SeismoAtlas is not an official warning service.