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SeismoAtlas

M2.3 earthquake 48 km WSW of Hilo, Hawaii, United States

A magnitude 2.3 earthquake struck 48 km WSW of Hilo, Hawaii, United States at 19:53 local time (05:53 UTC) on 23 Oct 2026, at a depth of -1 km, according to USGS.

Data: USGS · updated 2026-10-26 18:03 UTC · reviewed

Magnitude
2.3micro
local magnitude (Richter) (ml)
Depth
-0.6 km
Status
Reviewed
Origin time
2026-10-24 05:53:16 UTC
Local: 23 Oct 2026, 19:53:16 (Pacific/Honolulu)
Epicentre
19.491° N, 155.475° 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
HiloHawaii, United States · pop. 43,26348 kmINot felt
HōlualoaHawaii, United States · pop. 8,53852 kmINot felt
HonoluluHawaii, United States · pop. 350,964320 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. Likely felt out to about 7 km.

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 Survey2.3 mlwas 2.2-0.6 km19.49° N, 155.48° 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 36 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 -1 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M2.3 releases about 27× the energy of M1.3, and its waves are about 8.9× taller on a seismogram. Energy: 36 kg of TNT vs 1 kg of TNT.

Each square is the energy of one M1.3. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

54 later earthquakes within 30 km; the largest was M3.1 8 days ago. 42 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M2.3

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
3.671.4-1
24.171.847
28.702.339
35.851.228
42.911.9-1
43.401.931
78.092.49
89.412.60
90.031.230
102.961.233
107.611.828
111.181.78
139.401.930
171.441.79
173.001.829
173.191.430
176.441.62
176.481.92
176.731.72
176.791.92
179.081.71
185.621.72
185.632.22
206.650.83
210.001.67
221.392.02
224.341.726
254.951.97
260.821.112
263.442.02
264.222.440
267.251.329
280.113.1-2
280.531.8-2
290.691.77
294.531.76
296.221.830
313.791.830
319.612.441
319.611.923
327.451.60
331.531.928
343.441.930
344.201.93
344.831.950
351.191.329
352.541.930
354.002.18
363.362.50
407.141.732
419.251.732
447.261.93
450.501.929
467.761.928
  1. 3.143 km SE of Hōlualoa, Hawaii, United States11-04 21:59
  2. 2.646 km WSW of Hilo, Hawaii, United States10-27 23:17
  3. 2.547 km SW of Hilo, Hawaii, United States11-08 09:14
  4. 2.442 km ESE of Hōlualoa, Hawaii, United States11-04 06:06
  5. 2.439 km ESE of Hōlualoa, Hawaii, United States10-27 11:58
  6. 2.443 km ESE of Hōlualoa, Hawaii, United States11-06 13:29
  7. 2.342 km ESE of Hōlualoa, Hawaii, United States10-25 10:34
  8. 2.239 km SW of Hawaiian Paradise Park, United States10-31 23:31
  9. 2.152 km WSW of Hawaiian Paradise Park, United States11-07 23:53
  10. 2.039 km SW of Hawaiian Paradise Park, United States11-02 11:16
  11. 2.040 km SW of Hawaiian Paradise Park, United States11-04 05:19
  12. 1.937 km SW of Hawaiian Paradise Park, United States10-26 00:47
  13. 1.964 km SW of Hawaiian Paradise Park, United States11-12 17:38
  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. 1.939 km SW of Hawaiian Paradise Park, United States10-31 14:40
  17. 1.954 km SW of Hawaiian Paradise Park, United States10-26 01:17
  18. 1.957 km SW of Hawaiian Paradise Park, United States11-07 22:25
  19. 1.958 km SW of Hawaiian Paradise Park, United States10-30 01:17
  20. 1.945 km WSW of Hilo, Hawaii, United States10-31 14:22
  21. 1.938 km WSW of Hawaiian Paradise Park, United States11-11 21:09
  22. 1.959 km SW of Hawaiian Paradise Park, United States11-12 00:23
  23. 1.958 km SW of Hawaiian Paradise Park, United States11-07 01:25
  24. 1.950 km ESE of Hōlualoa, Hawaii, United States11-06 13:29
  25. 1.964 km SW of Hawaiian Paradise Park, United States11-07 13:19

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 hv75063136. First recorded here 24 Oct 2026, 05:57:32 UTC. Solutions: USGS · HV (usgs:hv75063136). Cite as: SeismoAtlas, “M2.3 earthquake 48 km WSW of Hilo, Hawaii, United States”, https://seismoatlas.com/earthquake/hv75063136-m2-3-earthquake-48-km-wsw-of-hilo-hawaii-united-states, data from USGS.

JSON: /api/v1/events/hv75063136. SeismoAtlas is not an official warning service.