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M1.9 earthquake 45 km WSW of Hilo, Hawaii, United States

A magnitude 1.9 earthquake struck 45 km WSW of Hilo, Hawaii, United States at 04:22 local time (14:22 UTC) on 31 Oct 2026, at a depth of 2 km, according to USGS.

revised from M2.4

Data: USGS · updated 2026-11-01 06:39 UTC · reviewed

Magnitude
1.9micro
local magnitude (Richter) (ml)
revised from 2.4
Depth
2 km
Status
Reviewed
Origin time
2026-10-31 14:22:13 UTC
Local: 31 Oct 2026, 04:22:13 (Pacific/Honolulu)
Epicentre
19.516° N, 155.451° 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. 43,26345 kmINot felt
Hawaiian Paradise ParkHawaii, United States · pop. 11,40451 kmINot felt
HonoluluHawaii, United States · pop. 350,964321 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 5 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 Survey1.9 mlwas 2.42 km19.52° N, 155.45° 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 10 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 2 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M1.9 releases about 22× the energy of M1.0, and its waves are about 7.8× taller on a seismogram. Energy: 10 kg of TNT vs 477 g of TNT.

Each square is the energy of one M1.0. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

34 later earthquakes within 30 km; the largest was M3.1 8 days ago. 14 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M1.9

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
0.251.72
0.311.92
2.601.71
9.141.72
9.152.22
30.170.83
33.521.67
44.912.02
47.861.726
78.471.97
86.952.02
87.742.440
90.761.329
103.633.1-2
104.051.8-2
114.211.77
118.051.76
119.741.830
143.132.441
143.131.923
150.971.60
155.051.928
166.961.930
167.721.93
168.351.950
174.711.329
176.061.930
177.522.18
186.882.50
230.661.732
242.771.732
270.781.93
274.011.929
298.722.58
  1. 3.143 km SE of Hōlualoa, Hawaii, United States11-04 21:59
  2. 2.547 km SW of Hilo, Hawaii, United States11-08 09:14
  3. 2.553 km SW of Hilo, Hawaii, United States11-13 01:05
  4. 2.442 km ESE of Hōlualoa, Hawaii, United States11-04 06:06
  5. 2.443 km ESE of Hōlualoa, Hawaii, United States11-06 13:29
  6. 2.239 km SW of Hawaiian Paradise Park, United States10-31 23:31
  7. 2.152 km WSW of Hawaiian Paradise Park, United States11-07 23:53
  8. 2.039 km SW of Hawaiian Paradise Park, United States11-02 11:16
  9. 2.040 km SW of Hawaiian Paradise Park, United States11-04 05:19
  10. 1.951 km ESE of Hōlualoa, Hawaii, United States11-03 20:50
  11. 1.941 km ESE of Hōlualoa, Hawaii, United States11-07 14:43
  12. 1.939 km SW of Hawaiian Paradise Park, United States10-31 14:40
  13. 1.957 km SW of Hawaiian Paradise Park, United States11-07 22:25
  14. 1.938 km WSW of Hawaiian Paradise Park, United States11-11 21:09
  15. 1.959 km SW of Hawaiian Paradise Park, United States11-12 00:23
  16. 1.958 km SW of Hawaiian Paradise Park, United States11-07 01:25
  17. 1.950 km ESE of Hōlualoa, Hawaii, United States11-06 13:29
  18. 1.964 km SW of Hawaiian Paradise Park, United States11-07 13:19
  19. 1.958 km SW of Hawaiian Paradise Park, United States11-07 14:05
  20. 1.842 km SE of Hōlualoa, Hawaii, United States11-04 22:25
  21. 1.854 km SW of Hawaiian Paradise Park, United States11-05 14:06
  22. 1.755 km ESE of Hōlualoa, Hawaii, United States11-05 08:34
  23. 1.745 km WSW of Hilo, Hawaii, United States10-31 14:37
  24. 1.746 km SW of Hawaiian Paradise Park, United States11-02 14:13
  25. 1.756 km SW of Hawaiian Paradise Park, United States11-10 17:08

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Reports on SeismoAtlas

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Event id hv75066796. First recorded here 31 Oct 2026, 14:26:04 UTC. Solutions: USGS · HV (usgs:hv75066796). Cite as: SeismoAtlas, “M1.9 earthquake 45 km WSW of Hilo, Hawaii, United States”, https://seismoatlas.com/earthquake/hv75066796-m1-9-earthquake-45-km-wsw-of-hilo-hawaii-united-states, data from USGS.

JSON: /api/v1/events/hv75066796. SeismoAtlas is not an official warning service.