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M0.6 earthquake 51 km ENE of West Side Highway, Washington, United States

A magnitude 0.6 earthquake struck 51 km ENE of West Side Highway, Washington, United States at 14:50 local time (21:50 UTC) on 7 Oct 2026, at a depth of 17 km, according to USGS.

Data: USGS · updated 2026-10-08 00:07 UTC · reviewed

Magnitude
0.6micro
local magnitude (Richter) (ml)
Depth
16.9 km
Status
Reviewed
Origin time
2026-10-07 21:50:21 UTC
Local: 7 Oct 2026, 14:50:21 (America/Los Angeles)
Epicentre
46.373° N, 122.322° 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
West Side HighwayWashington, United States · pop. 5,51751 kmINot felt
KelsoWashington, United States · pop. 11,90152 kmINot felt
LongviewWashington, United States · pop. 36,84854 kmINot felt
GrahamWashington, United States · pop. 23,49175 kmINot felt
SpanawayWashington, United States · pop. 27,22781 kmINot felt
LaceyWashington, United States · pop. 46,40982 kmINot felt
PortlandOregon, United States · pop. 652,50399 kmINot felt
SeattleWashington, United States · pop. 780,995138 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 · UW, which has been reviewed by an analyst.

AgencyMagnitudeDepthEpicentreTime offsetStatus
USGS · UWheadlinePacific Northwest Seismic Network via U.S. Geological Survey0.6 ml16.9 km46.37° N, 122.32° W–Reviewed

How big was it?

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

It released roughly the energy of 108 g 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 17 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M1.0 releases about 4.4× the energy of M0.6, and its waves are about 2.7× taller on a seismogram. Energy: 477 g of TNT vs 108 g of TNT.

Each square is the energy of one M0.6. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

62 later earthquakes within 30 km; the largest was M1.7 21 days ago. 18 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M0.6

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
0.730.21
5.050.73
19.680.13
35.280.312
35.29-0.112
41.160.312
42.830.32
71.110.011
90.570.12
103.190.23
104.870.316
112.200.518
117.15-0.22
117.780.13
118.15-0.12
119.120.215
120.14-0.03
120.820.61
125.860.17
129.120.13
130.610.117
138.630.53
144.490.39
159.340.43
175.960.43
179.790.43
199.020.43
206.140.52
216.040.41
221.400.53
221.780.23
224.260.82
228.83-0.15
250.030.53
287.33-0.12
328.930.22
345.100.518
348.731.711
388.240.59
391.730.42
402.68-0.12
405.160.15
405.580.43
405.590.43
406.720.86
406.731.47
406.740.46
467.070.618
467.090.317
472.770.610
480.331.3-1
483.300.70
489.340.29
516.930.88
537.870.10
563.880.12
567.770.310
569.140.83
571.630.65
583.571.118
617.820.33
673.470.717
  1. 1.755 km ENE of West Side Highway, Washington, United States10-22 10:34
  2. 1.455 km NNE of Battle Ground, Washington, United States10-24 20:34
  3. 1.361 km SSE of Graham, Washington, United States10-27 22:10
  4. 1.122 km ENE of West Side Highway, Washington, United States11-01 05:24
  5. 0.854 km NNE of Battle Ground, Washington, United States10-31 14:58
  6. 0.854 km NNE of Battle Ground, Washington, United States10-17 06:06
  7. 0.854 km NNE of Battle Ground, Washington, United States10-24 20:33
  8. 0.857 km ESE of Chehalis, Washington, United States10-29 10:46
  9. 0.754 km NNE of Battle Ground, Washington, United States10-08 02:53
  10. 0.723 km ENE of West Side Highway, Washington, United States11-04 23:18
  11. 0.754 km NNE of Battle Ground, Washington, United States10-28 01:08
  12. 0.654 km NNE of Battle Ground, Washington, United States10-31 17:28
  13. 0.654 km NNE of Battle Ground, Washington, United States10-12 22:39
  14. 0.665 km NE of Battle Ground, Washington, United States10-27 14:36
  15. 0.622 km ENE of West Side Highway, Washington, United States10-27 08:54
  16. 0.547 km ESE of Chehalis, Washington, United States10-12 14:02
  17. 0.522 km ENE of West Side Highway, Washington, United States10-22 06:56
  18. 0.553 km NE of Woodland, Washington, United States10-18 07:52
  19. 0.560 km NNE of Battle Ground, Washington, United States10-24 02:04
  20. 0.554 km NNE of Battle Ground, Washington, United States10-13 16:28
  21. 0.554 km NNE of Battle Ground, Washington, United States10-16 11:58
  22. 0.554 km NNE of Battle Ground, Washington, United States10-17 03:14
  23. 0.454 km NNE of Battle Ground, Washington, United States10-16 21:52
  24. 0.454 km NNE of Battle Ground, Washington, United States10-24 19:25
  25. 0.454 km NNE of Battle Ground, Washington, United States10-24 05:34

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 uw714117651. First recorded here 8 Oct 2026, 00:09:53 UTC. Solutions: USGS · UW (usgs:uw714117651). Cite as: SeismoAtlas, “M0.6 earthquake 51 km ENE of West Side Highway, Washington, United States”, https://seismoatlas.com/earthquake/uw714117651-m0-6-earthquake-51-km-ene-of-west-side-highway-washington-united-states, data from USGS.

JSON: /api/v1/events/uw714117651. SeismoAtlas is not an official warning service.