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SeismoAtlas

M4.0 earthquake 71 km SE of Hōlualoa, Hawaii, United States

A magnitude 4.0 earthquake struck 71 km SE of Hōlualoa, Hawaii, United States at 08:00 local time (18:00 UTC) on 13 Sept 2026, at a depth of 13 km, according to USGS.

75 reports to USGS “Did You Feel It?”

Data: USGS · updated 2026-09-24 16:57 UTC · reviewed

Magnitude
4.0minor
local magnitude (Richter) (ml)
Depth
12.9 km
Status
Reviewed
Origin time
2026-09-13 18:00:23 UTC
Local: 13 Sept 2026, 08:00:23 (Pacific/Honolulu)
Epicentre
19.161° N, 155.481° 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. 8,53871 kmIIWeak
Hawaiian Paradise ParkHawaii, United States · pop. 11,40472 kmIIWeak
HiloHawaii, United States · pop. 43,26375 kmIIWeak
HonoluluHawaii, United States · pop. 350,964345 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 40 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 Survey4.0 ml12.9 km19.16° N, 155.48° W–Reviewed

How big was it?

Often felt by people at rest close to the epicentre, rarely causes damage.

It released roughly the energy of 13 t 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 13 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M4.0 releases about 27× the energy of M3.0, and its waves are about 8.9× taller on a seismogram. Energy: 13 t of TNT vs 477 kg of TNT.

Each square is the energy of one M3.0. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

83 later earthquakes within 30 km; the largest was M4.1 10 days ago. 3 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M4.0

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
0.342.611
40.772.632
108.614.112
111.432.510
113.323.014
129.472.814
141.412.612
188.092.631
192.491.830
192.962.631
199.641.831
200.151.933
201.851.728
203.971.831
207.091.228
208.361.839
211.181.729
216.342.131
216.622.032
217.501.928
220.301.930
228.171.928
231.341.811
232.591.928
232.642.031
233.681.629
235.452.610
236.361.810
238.831.629
238.931.726
238.962.033
239.431.728
239.581.829
239.601.728
241.641.830
243.811.632
244.861.928
245.121.932
246.262.232
246.721.630
248.682.133
248.831.830
251.741.533
254.791.836
261.521.831
265.452.129
268.532.05
268.611.731
268.971.232
271.891.79
272.191.830
274.851.927
276.061.830
278.961.935
279.431.730
279.772.228
281.211.612
296.231.83
297.352.131
300.552.328
309.431.930
310.042.05
311.312.430
313.682.136
313.692.632
318.572.031
327.661.930
328.161.827
335.961.910
338.661.928
342.361.729
344.352.129
349.621.727
352.332.132
352.601.732
353.582.835
353.642.133
353.952.433
354.361.830
354.522.134
354.742.333
354.901.732
355.452.333
  1. 4.171 km SE of Hōlualoa, Hawaii, United States09-18 06:36
  2. 3.070 km SE of Hōlualoa, Hawaii, United States09-18 11:19
  3. 2.870 km SE of Hōlualoa, Hawaii, United States09-19 03:28
  4. 2.869 km SE of Hōlualoa, Hawaii, United States09-28 11:35
  5. 2.670 km SE of Hōlualoa, Hawaii, United States09-13 18:20
  6. 2.667 km SE of Hōlualoa, Hawaii, United States09-21 14:06
  7. 2.667 km SE of Hōlualoa, Hawaii, United States09-15 10:46
  8. 2.652 km SW of Hawaiian Paradise Park, United States09-26 19:41
  9. 2.671 km SE of Hōlualoa, Hawaii, United States09-19 15:24
  10. 2.667 km SE of Hōlualoa, Hawaii, United States09-21 18:58
  11. 2.671 km SE of Hōlualoa, Hawaii, United States09-23 13:27
  12. 2.570 km SE of Hōlualoa, Hawaii, United States09-18 09:26
  13. 2.471 km SE of Hōlualoa, Hawaii, United States09-28 11:57
  14. 2.457 km SW of Hawaiian Paradise Park, United States09-26 17:19
  15. 2.369 km SE of Hōlualoa, Hawaii, United States09-26 06:33
  16. 2.371 km SE of Hōlualoa, Hawaii, United States09-28 12:45
  17. 2.371 km SE of Hōlualoa, Hawaii, United States09-28 13:27
  18. 2.249 km SW of Hawaiian Paradise Park, United States09-25 09:46
  19. 2.276 km SW of Hawaiian Paradise Park, United States09-24 00:15
  20. 2.167 km SE of Hōlualoa, Hawaii, United States09-24 19:27
  21. 2.170 km SE of Hōlualoa, Hawaii, United States09-22 18:21
  22. 2.171 km SE of Hōlualoa, Hawaii, United States09-28 12:31
  23. 2.172 km SE of Hōlualoa, Hawaii, United States09-28 11:38
  24. 2.164 km SW of Hawaiian Paradise Park, United States09-28 02:21
  25. 2.167 km SW of Hawaiian Paradise Park, United States09-26 03:21

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.

USGS “Did You Feel It?” has 75 reports: add yours at USGS.

Event id hv75034997. First recorded here 28 Sept 2026, 17:32:11 UTC. Solutions: USGS · HV (usgs:hv75034997). Cite as: SeismoAtlas, “M4.0 earthquake 71 km SE of Hōlualoa, Hawaii, United States”, https://seismoatlas.com/earthquake/hv75034997-m4-0-earthquake-71-km-se-of-holualoa-hawaii-united-states, data from USGS.

JSON: /api/v1/events/hv75034997. SeismoAtlas is not an official warning service.