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SeismoAtlas

M1.0 earthquake 43 km SSE of Enumclaw, Washington, United States

A magnitude 1.0 earthquake struck 43 km SSE of Enumclaw, Washington, United States at 12:30 local time (19:30 UTC) on 25 Oct 2026, at a depth of 0 km, according to USGS.

revised from M1.9

Data: USGS · updated 2026-10-26 14:13 UTC · reviewed

Magnitude
1.0micro
local magnitude (Richter) (ml)
revised from 1.9
Depth
0.2 km
Status
Reviewed
Origin time
2026-10-25 19:30:20 UTC
Local: 25 Oct 2026, 12:30:20 (America/Los Angeles)
Epicentre
46.843° N, 121.764° 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
EnumclawWashington, United States · pop. 11,60943 kmINot felt
OrtingWashington, United States · pop. 7,44644 kmINot felt
GrahamWashington, United States · pop. 23,49146 kmINot felt
South HillWashington, United States · pop. 52,43151 kmINot felt
PuyallupWashington, United States · pop. 39,65955 kmINot felt
SpanawayWashington, United States · pop. 27,22758 kmINot felt
SeattleWashington, United States · pop. 780,99595 kmINot felt
PortlandOregon, United States · pop. 652,503163 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. Likely felt out to about 2 km.

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 Survey1.0 mlwas 1.90.2 km46.84° N, 121.76° 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 511 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 0 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 1.1× the energy of M1.0, and its waves are about 1× taller on a seismogram. Energy: 511 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

28 later earthquakes within 30 km; the largest was M1.9 12 days ago. 16 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M1.0

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
0.001.30
26.620.510
40.140.2-2
78.720.86
100.800.96
117.860.83
118.031.64
127.160.410
138.651.99
193.000.23
232.820.07
234.560.512
236.060.85
241.750.65
244.170.81
248.460.12
258.490.74
312.451.86
317.631.66
329.431.01
329.451.41
359.401.47
365.400.74
366.280.6-1
368.330.86
383.070.22
425.711.04
435.830.811
  1. 1.939 km SE of Orting, Washington, United States10-31 14:09
  2. 1.840 km SSE of Graham, Washington, United States11-07 19:57
  3. 1.639 km SSE of Graham, Washington, United States10-30 17:32
  4. 1.639 km SSE of Graham, Washington, United States11-08 01:07
  5. 1.442 km SSE of Enumclaw, Washington, United States11-08 12:57
  6. 1.465 km SE of Graham, Washington, United States11-09 18:54
  7. 1.343 km SSE of Enumclaw, Washington, United States10-25 19:30
  8. 1.040 km SSE of Graham, Washington, United States11-12 13:12
  9. 1.042 km SSE of Enumclaw, Washington, United States11-08 12:56
  10. 0.949 km SE of Graham, Washington, United States10-30 00:18
  11. 0.842 km SSE of Enumclaw, Washington, United States11-04 23:40
  12. 0.840 km SSE of Graham, Washington, United States11-10 03:50
  13. 0.864 km SE of Graham, Washington, United States11-12 23:19
  14. 0.839 km SSE of Graham, Washington, United States10-30 17:21
  15. 0.840 km SSE of Graham, Washington, United States10-29 02:13
  16. 0.852 km SSE of Graham, Washington, United States11-04 15:34
  17. 0.740 km SSE of Graham, Washington, United States11-05 13:59
  18. 0.739 km SSE of Graham, Washington, United States11-10 00:54
  19. 0.639 km SE of Orting, Washington, United States11-10 01:47
  20. 0.640 km SSE of Graham, Washington, United States11-04 21:15
  21. 0.524 km SE of Orting, Washington, United States11-04 14:03
  22. 0.544 km SE of Orting, Washington, United States10-26 22:07
  23. 0.432 km SE of Orting, Washington, United States10-31 02:40
  24. 0.245 km SSE of Enumclaw, Washington, United States10-27 11:38
  25. 0.249 km SE of Graham, Washington, United States11-02 20:30

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 uw714127742. First recorded here 25 Oct 2026, 19:33:09 UTC. Solutions: USGS · UW (usgs:uw714127742). Cite as: SeismoAtlas, “M1.0 earthquake 43 km SSE of Enumclaw, Washington, United States”, https://seismoatlas.com/earthquake/uw714127742-m1-0-earthquake-43-km-sse-of-enumclaw-washington-united-states, data from USGS.

JSON: /api/v1/events/uw714127742. SeismoAtlas is not an official warning service.