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M0.6 earthquake 22 km WSW of Silverdale, Washington, United States

A magnitude 0.6 earthquake struck 22 km WSW of Silverdale, Washington, United States at 14:44 local time (21:44 UTC) on 5 Oct 2026, at a depth of 19 km, according to USGS.

revised from M0.4

Data: USGS · updated 2026-10-06 03:58 UTC · reviewed

Magnitude
0.6micro
duration magnitude (md)
revised from 0.4
Depth
18.8 km
Status
Reviewed
Origin time
2026-10-05 21:44:37 UTC
Local: 5 Oct 2026, 14:44:37 (America/Los Angeles)
Epicentre
47.598° N, 122.977° 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
SilverdaleWashington, United States · pop. 19,20422 kmINot felt
TracytonWashington, United States · pop. 5,23324 kmINot felt
BremertonWashington, United States · pop. 39,52026 kmINot felt
Bainbridge IslandWashington, United States · pop. 23,84034 kmINot felt
SeattleWashington, United States · pop. 780,99549 kmINot felt
BurienWashington, United States · pop. 50,46749 kmINot felt
VictoriaBritish Columbia, Canada · pop. 289,62598 kmINot felt
SurreyBritish Columbia, Canada · pop. 568,322168 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 mdwas 0.418.8 km47.60° N, 122.98° 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 124 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 19 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 3.8× the energy of M0.6, and its waves are about 2.5× taller on a seismogram. Energy: 477 g of TNT vs 124 g of TNT.

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

Aftershocks and nearby activity

23 later earthquakes within 30 km; the largest was M2.0 38 days ago. 5 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M0.6

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
10.861.825
16.582.023
17.600.922
26.452.024
27.581.124
86.880.221
128.280.714
130.480.813
133.071.113
172.250.718
184.890.523
198.241.122
198.790.922
214.100.713
215.361.930
283.350.620
350.420.421
420.661.540
421.670.422
487.361.15
526.190.4-1
530.231.518
672.830.420
  1. 2.0Near Tracyton, Washington, United States10-07 00:11
  2. 2.0Near Tracyton, Washington, United States10-06 14:19
  3. 1.917 km WSW of East Port Orchard, Washington, United States10-14 21:06
  4. 1.8Near Tracyton, Washington, United States10-06 08:36
  5. 1.513 km W of Port Orchard, Washington, United States10-27 23:58
  6. 1.530 km SSW of Sequim, Washington, United States10-23 10:24
  7. 1.17 km SW of Silverdale, Washington, United States10-11 10:48
  8. 1.17 km NNW of Bangor Trident Base, Washington, United States10-14 03:59
  9. 1.113 km W of Bangor Trident Base, Washington, United States10-26 05:06
  10. 1.13 km E of Tracyton, Washington, United States10-07 01:19
  11. 0.96 km NNW of Bangor Trident Base, Washington, United States10-14 04:32
  12. 0.94 km E of Tracyton, Washington, United States10-06 15:20
  13. 0.85 km WSW of Tracyton, Washington, United States10-11 08:13
  14. 0.76 km WSW of Tracyton, Washington, United States10-11 06:01
  15. 0.74 km W of Tracyton, Washington, United States10-14 19:50
  16. 0.711 km WNW of Bangor Trident Base, Washington, United States10-13 01:59
  17. 0.611 km NW of Bangor Trident Base, Washington, United States10-17 17:05
  18. 0.514 km NW of Bangor Trident Base, Washington, United States10-13 14:37
  19. 0.415 km WNW of Bangor Trident Base, Washington, United States10-20 12:09
  20. 0.413 km NW of Bangor Trident Base, Washington, United States10-23 11:25
  21. 0.411 km WNW of Bangor Trident Base, Washington, United States11-02 22:34
  22. 0.424 km NNE of Shelton, Washington, United States10-27 19:56
  23. 0.213 km NNW of Bangor Trident Base, Washington, United States10-09 12:37

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 uw714116541. First recorded here 5 Oct 2026, 22:32:31 UTC. Solutions: USGS · UW (usgs:uw714116541). Cite as: SeismoAtlas, “M0.6 earthquake 22 km WSW of Silverdale, Washington, United States”, https://seismoatlas.com/earthquake/uw714116541-m0-6-earthquake-22-km-wsw-of-silverdale-washington-united-states, data from USGS.

JSON: /api/v1/events/uw714116541. SeismoAtlas is not an official warning service.