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M2.2 earthquake 38 km ESE of Hōlualoa, Hawaii, United States

A magnitude 2.2 earthquake struck 38 km ESE of Hōlualoa, Hawaii, United States at 15:47 local time (01:47 UTC) on 21 Oct 2026, at a depth of 35 km, according to USGS.

Data: USGS · updated 2026-10-26 21:05 UTC · reviewed

Magnitude
2.2micro
local magnitude (Richter) (ml)
Depth
34.8 km
Status
Reviewed
Origin time
2026-10-22 01:47:31 UTC
Local: 21 Oct 2026, 15:47:31 (Pacific/Honolulu)
Epicentre
19.494° N, 155.610° 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. 8,53838 kmINot felt
Kailua-KonaHawaii, United States · pop. 11,97544 kmINot felt
HiloHawaii, United States · pop. 43,26360 kmINot felt
HonoluluHawaii, United States · pop. 350,964309 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 Survey2.2 mlwas 2.234.8 km19.49° N, 155.61° 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 31 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 35 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M2.2 releases about 33× the energy of M1.2, and its waves are about 10× taller on a seismogram. Energy: 31 kg of TNT vs 951 g of TNT.

Each square is the energy of one M1.2. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

38 later earthquakes within 30 km; the largest was M3.1 8 days ago. 17 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M2.2

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
10.771.710
17.741.50
17.752.7-1
26.731.75
34.521.83
37.031.829
49.701.97
52.102.3-1
76.271.847
80.792.339
130.192.49
141.502.60
159.711.828
163.271.78
228.541.62
228.581.92
228.821.72
231.181.71
258.750.83
262.101.67
280.952.122
307.051.97
312.921.112
316.312.440
332.213.1-2
332.631.8-2
342.791.77
346.631.76
369.022.473
371.702.441
371.711.923
379.541.60
383.631.928
384.542.117
396.931.950
406.092.18
415.462.50
502.591.929
  1. 3.143 km SE of Hōlualoa, Hawaii, United States11-04 21:59
  2. 2.742 km ESE of Hōlualoa, Hawaii, United States10-22 19:32
  3. 2.646 km WSW of Hilo, Hawaii, United States10-27 23:17
  4. 2.547 km SW of Hilo, Hawaii, United States11-08 09:14
  5. 2.442 km ESE of Hōlualoa, Hawaii, United States11-04 06:06
  6. 2.429 km SSE of Hōlualoa, Hawaii, United States11-06 10:48
  7. 2.439 km ESE of Hōlualoa, Hawaii, United States10-27 11:58
  8. 2.443 km ESE of Hōlualoa, Hawaii, United States11-06 13:29
  9. 2.342 km ESE of Hōlualoa, Hawaii, United States10-25 10:34
  10. 2.348 km WSW of Hilo, Hawaii, United States10-24 05:53
  11. 2.117 km SE of Hōlualoa, Hawaii, United States11-02 18:44
  12. 2.152 km WSW of Hawaiian Paradise Park, United States11-07 23:53
  13. 2.128 km SSE of Hōlualoa, Hawaii, United States11-07 02:20
  14. 1.951 km ESE of Hōlualoa, Hawaii, United States11-03 20:50
  15. 1.941 km ESE of Hōlualoa, Hawaii, United States11-07 14:43
  16. 1.962 km SE of Hōlualoa, Hawaii, United States10-24 03:29
  17. 1.945 km WSW of Hilo, Hawaii, United States10-31 14:22
  18. 1.959 km SW of Hawaiian Paradise Park, United States11-12 00:23
  19. 1.958 km SW of Hawaiian Paradise Park, United States11-07 01:25
  20. 1.950 km ESE of Hōlualoa, Hawaii, United States11-06 13:29
  21. 1.842 km SE of Hōlualoa, Hawaii, United States11-04 22:25
  22. 1.855 km WSW of Hawaiian Paradise Park, United States10-28 17:30
  23. 1.858 km WSW of Hawaiian Paradise Park, United States10-23 14:49
  24. 1.846 km SW of Hilo, Hawaii, United States10-23 12:18
  25. 1.861 km WSW of Hawaiian Paradise Park, United States10-25 06:03

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 hv75061946. First recorded here 22 Oct 2026, 01:52:18 UTC. Solutions: USGS · HV (usgs:hv75061946). Cite as: SeismoAtlas, “M2.2 earthquake 38 km ESE of Hōlualoa, Hawaii, United States”, https://seismoatlas.com/earthquake/hv75061946-m2-2-earthquake-38-km-ese-of-holualoa-hawaii-united-states, data from USGS.

JSON: /api/v1/events/hv75061946. SeismoAtlas is not an official warning service.