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M1.9 earthquake 39 km SE of Orting, Washington, United States

A magnitude 1.9 earthquake struck 39 km SE of Orting, Washington, United States at 07:09 local time (14:09 UTC) on 31 Oct 2026, at a depth of 9 km, according to USGS.

revised from M2.1

Data: USGS · updated 2026-11-02 22:00 UTC · reviewed

Magnitude
1.9micro
local magnitude (Richter) (ml)
revised from 2.1
Depth
9.3 km
Status
Reviewed
Origin time
2026-10-31 14:09:29 UTC
Local: 31 Oct 2026, 07:09:29 (America/Los Angeles)
Epicentre
46.813° N, 121.908° 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
OrtingWashington, United States · pop. 7,44639 kmINot felt
GrahamWashington, United States · pop. 23,49139 kmINot felt
South HillWashington, United States · pop. 52,43146 kmINot felt
SpanawayWashington, United States · pop. 27,22751 kmINot felt
PuyallupWashington, United States · pop. 39,65951 kmINot felt
SeattleWashington, United States · pop. 780,99594 kmINot felt
PortlandOregon, United States · pop. 652,503156 kmINot felt
VictoriaBritish Columbia, Canada · pop. 289,625211 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 Survey1.9 mlwas 2.19.3 km46.81° N, 121.91° W–Reviewed · 2 revisions

How big was it?

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

It released roughly the energy of 9 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 9 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M1.9 releases about 19× the energy of M1.0, and its waves are about 7.2× taller on a seismogram. Energy: 9 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

20 later earthquakes within 30 km; the largest was M1.8 5 days ago. 14 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M1.9

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
25.690.614
54.340.23
94.170.07
95.900.512
97.410.85
103.090.65
105.520.81
109.800.12
119.840.74
173.801.86
178.971.66
190.781.01
190.801.41
220.751.47
226.750.74
227.630.6-1
229.680.86
244.410.22
287.051.04
297.170.811
  1. 1.840 km SSE of Graham, Washington, United States11-07 19:57
  2. 1.639 km SSE of Graham, Washington, United States11-08 01:07
  3. 1.442 km SSE of Enumclaw, Washington, United States11-08 12:57
  4. 1.465 km SE of Graham, Washington, United States11-09 18:54
  5. 1.040 km SSE of Graham, Washington, United States11-12 13:12
  6. 1.042 km SSE of Enumclaw, Washington, United States11-08 12:56
  7. 0.842 km SSE of Enumclaw, Washington, United States11-04 23:40
  8. 0.840 km SSE of Graham, Washington, United States11-10 03:50
  9. 0.864 km SE of Graham, Washington, United States11-12 23:19
  10. 0.852 km SSE of Graham, Washington, United States11-04 15:34
  11. 0.740 km SSE of Graham, Washington, United States11-05 13:59
  12. 0.739 km SSE of Graham, Washington, United States11-10 00:54
  13. 0.639 km SE of Orting, Washington, United States11-10 01:47
  14. 0.613 km ESE of Orting, Washington, United States11-01 15:50
  15. 0.640 km SSE of Graham, Washington, United States11-04 21:15
  16. 0.524 km SE of Orting, Washington, United States11-04 14:03
  17. 0.249 km SE of Graham, Washington, United States11-02 20:30
  18. 0.245 km SSE of Orting, Washington, United States11-10 18:34
  19. 0.142 km SSE of Enumclaw, Washington, United States11-05 03:57
  20. 0.042 km SE of Graham, Washington, United States11-04 12:19

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Reports on SeismoAtlas

No reports yet.

Event id uw714133011. First recorded here 31 Oct 2026, 14:12:03 UTC. Solutions: USGS · UW (usgs:uw714133011). Cite as: SeismoAtlas, “M1.9 earthquake 39 km SE of Orting, Washington, United States”, https://seismoatlas.com/earthquake/uw714133011-m1-9-earthquake-39-km-se-of-orting-washington-united-states, data from USGS.

JSON: /api/v1/events/uw714133011. SeismoAtlas is not an official warning service.