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M1.1 earthquake 3 km E of Tracyton, Washington, United States

A magnitude 1.1 earthquake struck 3 km E of Tracyton, Washington, United States at 18:19 local time (01:19 UTC) on 6 Oct 2026, at a depth of 24 km, according to USGS.

Data: USGS · updated 2026-10-08 17:58 UTC · reviewed

Magnitude
1.1micro
local magnitude (Richter) (ml)
Depth
24.2 km
Status
Reviewed
Origin time
2026-10-07 01:19:13 UTC
Local: 6 Oct 2026, 18:19:13 (America/Los Angeles)
Epicentre
47.614° N, 122.616° 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
TracytonWashington, United States · pop. 5,2333 kmINot felt
BremertonWashington, United States · pop. 39,5205 kmINot felt
Bainbridge IslandWashington, United States · pop. 23,8407 kmINot felt
SeattleWashington, United States · pop. 780,99521 kmINot felt
BurienWashington, United States · pop. 50,46726 kmINot felt
VictoriaBritish Columbia, Canada · pop. 289,625107 kmINot felt
SurreyBritish Columbia, Canada · pop. 568,322167 kmINot felt
VancouverBritish Columbia, Canada · pop. 662,248186 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 Survey1.1 ml24.2 km47.61° N, 122.62° 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 587 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 24 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M1.1 releases about 1.2× the energy of M1.0, and its waves are about 1.1× taller on a seismogram. Energy: 587 g 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

22 later earthquakes within 30 km; the largest was M1.9 30 days ago. 10 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M1.1

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
59.300.221
85.491.331
100.710.714
102.910.813
105.491.113
144.680.718
157.310.523
170.671.122
171.220.922
186.530.713
187.781.930
213.510.619
255.780.620
277.930.822
322.840.421
323.931.328
344.301.229
394.100.422
459.791.15
502.651.518
645.250.420
704.860.921
  1. 1.917 km WSW of East Port Orchard, Washington, United States10-14 21:06
  2. 1.513 km W of Port Orchard, Washington, United States10-27 23:58
  3. 1.37 km SE of Manchester, Washington, United States10-20 13:15
  4. 1.37 km ESE of Bainbridge Island, Washington, United States10-10 14:48
  5. 1.2Near Edmonds, Washington, United States10-21 09:37
  6. 1.17 km SW of Silverdale, Washington, United States10-11 10:48
  7. 1.17 km NNW of Bangor Trident Base, Washington, United States10-14 03:59
  8. 1.113 km W of Bangor Trident Base, Washington, United States10-26 05:06
  9. 0.96 km NNW of Bangor Trident Base, Washington, United States10-14 04:32
  10. 0.912 km NW of Bangor Trident Base, Washington, United States11-05 10:10
  11. 0.85 km WSW of Tracyton, Washington, United States10-11 08:13
  12. 0.811 km WNW of Edmonds, Washington, United States10-18 15:15
  13. 0.76 km WSW of Tracyton, Washington, United States10-11 06:01
  14. 0.74 km W of Tracyton, Washington, United States10-14 19:50
  15. 0.711 km WNW of Bangor Trident Base, Washington, United States10-13 01:59
  16. 0.64 km SSW of Bainbridge Island, Washington, United States10-15 22:50
  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. 0.213 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 uw714117231. First recorded here 7 Oct 2026, 16:34:47 UTC. Solutions: USGS · UW (usgs:uw714117231). Cite as: SeismoAtlas, “M1.1 earthquake 3 km E of Tracyton, Washington, United States”, https://seismoatlas.com/earthquake/uw714117231-m1-1-earthquake-3-km-e-of-tracyton-washington-united-states, data from USGS.

JSON: /api/v1/events/uw714117231. SeismoAtlas is not an official warning service.