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M1.8 earthquake 55 km WSW of Hawaiian Paradise Park, United States

A magnitude 1.8 earthquake struck 55 km WSW of Hawaiian Paradise Park, United States at 07:30 local time (17:30 UTC) on 28 Oct 2026, at a depth of 28 km, according to USGS. The solution is preliminary and may be revised.

Data: USGS · updated 2026-10-28 17:33 UTC · automatic solution

Magnitude
1.8micro
duration magnitude (md)
Depth
27.5 km
Status
Automatic
Origin time
2026-10-28 17:30:10 UTC
Local: 28 Oct 2026, 07:30:10 (Pacific/Honolulu)
Epicentre
19.339° N, 155.421° 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
Hawaiian Paradise ParkHawaii, United States · pop. 11,40455 kmINot felt
HiloHawaii, United States · pop. 43,26356 kmINot felt
HonoluluHawaii, United States · pop. 350,964336 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.

AgencyMagnitudeDepthEpicentreTime offsetStatus
USGS · HVheadlineHawaiian Volcano Observatory via U.S. Geological Survey1.8 md27.5 km19.34° N, 155.42° W–Automatic

How big was it?

Usually not felt. Recorded by nearby seismometers; thousands occur worldwide every day.

It released roughly the energy of 8 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 28 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M1.8 releases about 16× the energy of M1.0, and its waves are about 6.5× taller on a seismogram. Energy: 8 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

136 later earthquakes within 30 km; the largest was M3.1 8 days ago. 65 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M1.8

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
3.561.78
10.952.026
11.931.831
13.711.929
21.932.232
23.032.01
31.791.930
34.431.84
35.361.91
35.372.733
45.841.830
46.641.930
47.301.832
49.211.838
50.441.928
50.531.332
52.091.730
54.631.832
55.962.132
59.471.830
62.541.931
62.552.00
63.831.79
63.881.930
65.391.829
65.581.430
65.671.934
66.331.636
68.831.62
68.871.92
69.111.72
69.181.92
71.461.71
78.001.72
78.012.22
81.501.846
81.512.052
85.171.930
87.272.432
87.571.728
88.121.828
94.081.913
96.451.827
96.811.829
99.040.83
99.511.829
102.391.67
103.491.331
113.782.02
115.321.829
116.731.726
118.171.831
118.201.732
127.041.927
130.381.726
140.041.829
143.321.731
147.331.97
154.891.729
155.201.931
155.822.02
156.602.440
159.631.329
165.701.828
172.503.1-2
172.921.8-2
177.172.132
178.951.933
179.121.829
183.081.77
186.921.76
188.611.830
194.541.739
196.302.51
196.541.732
206.051.529
206.171.830
211.992.441
212.001.923
212.362.028
218.031.729
219.831.60
223.921.928
230.081.830
235.831.930
236.581.93
237.221.950
238.321.928
238.801.730
241.051.929
243.581.329
244.921.930
245.191.928
246.382.18
248.001.933
252.071.842
255.752.50
259.151.911
264.041.929
268.571.932
275.511.736
275.521.935
275.532.344
275.802.040
275.871.811
276.102.612
276.301.713
282.152.531
282.212.231
291.211.929
296.332.629
297.801.929
299.531.732
301.501.930
306.551.736
306.981.829
307.361.931
311.641.732
312.211.829
315.571.827
315.681.930
325.881.530
327.561.727
328.351.727
339.651.93
342.881.929
347.011.731
351.241.931
358.611.828
360.141.928
360.451.736
361.272.129
361.782.231
363.351.729
367.592.58
367.681.930
  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. 2.672 km SE of Hōlualoa, Hawaii, United States11-09 05:36
  4. 2.661 km SW of Hawaiian Paradise Park, United States11-10 01:49
  5. 2.547 km SW of Hilo, Hawaii, United States11-08 09:14
  6. 2.567 km SE of Hōlualoa, Hawaii, United States11-09 11:39
  7. 2.540 km SW of Hawaiian Paradise Park, United States11-05 21:48
  8. 2.553 km SW of Hilo, Hawaii, United States11-13 01:05
  9. 2.442 km ESE of Hōlualoa, Hawaii, United States11-04 06:06
  10. 2.468 km SE of Hōlualoa, Hawaii, United States11-01 08:46
  11. 2.443 km ESE of Hōlualoa, Hawaii, United States11-06 13:29
  12. 2.368 km SE of Hōlualoa, Hawaii, United States11-09 05:01
  13. 2.268 km SE of Hōlualoa, Hawaii, United States10-29 15:25
  14. 2.267 km SE of Hōlualoa, Hawaii, United States11-12 19:17
  15. 2.239 km SW of Hawaiian Paradise Park, United States10-31 23:31
  16. 2.267 km SE of Hōlualoa, Hawaii, United States11-09 11:42
  17. 2.167 km SE of Hōlualoa, Hawaii, United States10-31 01:28
  18. 2.158 km SW of Hawaiian Paradise Park, United States11-12 18:46
  19. 2.170 km SW of Hawaiian Paradise Park, United States11-05 02:40
  20. 2.152 km WSW of Hawaiian Paradise Park, United States11-07 23:53
  21. 2.067 km SW of Hawaiian Paradise Park, United States10-31 08:03
  22. 2.040 km SW of Hawaiian Paradise Park, United States10-29 16:32
  23. 2.058 km SW of Hawaiian Paradise Park, United States11-06 13:51
  24. 2.039 km SW of Hawaiian Paradise Park, United States11-02 11:16
  25. 2.072 km SW of Hawaiian Paradise Park, United States11-09 05:17

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 hv75065006. First recorded here 28 Oct 2026, 17:34:10 UTC. Solutions: USGS · HV (usgs:hv75065006). Cite as: SeismoAtlas, “M1.8 earthquake 55 km WSW of Hawaiian Paradise Park, United States”, https://seismoatlas.com/earthquake/hv75065006-m1-8-earthquake-55-km-wsw-of-hawaiian-paradise-park-united-states, data from USGS.

JSON: /api/v1/events/hv75065006. SeismoAtlas is not an official warning service.