M0.6 earthquake 40 km SSE of Graham, Washington, United States
A magnitude 0.6 earthquake struck 40 km SSE of Graham, Washington, United States at 13:15 local time (21:15 UTC) on 4 Nov 2026, at a depth of 5 km, according to USGS.
Data: USGS · updated 2026-11-04 21:30 UTC · reviewed
- Magnitude
- 0.6micro
local magnitude (Richter) (ml) - Depth
- 4.9 km
- Status
- Reviewed
- Origin time
- 2026-11-04 21:15:03 UTC
- Local: 4 Nov 2026, 13:15:03 (America/Los Angeles)
- Epicentre
- 46.729° N, 122.056° 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
| Place | Distance | Est. shaking |
|---|---|---|
| GrahamWashington, United States · pop. 23,491 | 40 km | INot felt |
| OrtingWashington, United States · pop. 7,446 | 43 km | INot felt |
| South HillWashington, United States · pop. 52,431 | 49 km | INot felt |
| SpanawayWashington, United States · pop. 27,227 | 50 km | INot felt |
| PuyallupWashington, United States · pop. 39,659 | 54 km | INot felt |
| SeattleWashington, United States · pop. 780,995 | 100 km | INot felt |
| PortlandOregon, United States · pop. 652,503 | 143 km | INot felt |
| VictoriaBritish Columbia, Canada · pop. 289,625 | 214 km | INot 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.
| Agency | Magnitude | Depth | Epicentre | Time offset | Status |
|---|---|---|---|---|---|
| USGS · UWheadlinePacific Northwest Seismic Network via U.S. Geological Survey | 0.6 ml | 4.9 km | 46.73° N, 122.06° W | – | Reviewed |
How big was it?
Usually not felt. Recorded by nearby seismometers; thousands occur worldwide every day.
It released roughly the energy of 101 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 5 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 4.7× the energy of M0.6, and its waves are about 2.8× taller on a seismogram. Energy: 477 g of TNT vs 101 g of TNT.
Each square is the energy of one M0.6. Energy from log₁₀E = 1.5M + 4.8.
Aftershocks and nearby activity
14 later earthquakes within 30 km; the largest was M1.8 5 days ago. 10 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.
Mainshock M0.6
14 later earthquakes nearby. Aftershock rates typically fall off roughly as 1/time (Omori's law).
| Time after mainshock (hours) | Magnitude | Depth (km) |
|---|---|---|
| 2.43 | 0.8 | 1 |
| 6.71 | 0.1 | 2 |
| 16.74 | 0.7 | 4 |
| 70.71 | 1.8 | 6 |
| 75.88 | 1.6 | 6 |
| 87.69 | 1.0 | 1 |
| 87.70 | 1.4 | 1 |
| 117.65 | 1.4 | 7 |
| 123.66 | 0.7 | 4 |
| 124.54 | 0.6 | -1 |
| 126.58 | 0.8 | 6 |
| 141.32 | 0.2 | 2 |
| 183.96 | 1.0 | 4 |
| 194.08 | 0.8 | 11 |
- 1.840 km SSE of Graham, Washington, United States11-07 19:57
- 1.639 km SSE of Graham, Washington, United States11-08 01:07
- 1.442 km SSE of Enumclaw, Washington, United States11-08 12:57
- 1.465 km SE of Graham, Washington, United States11-09 18:54
- 1.040 km SSE of Graham, Washington, United States11-12 13:12
- 1.042 km SSE of Enumclaw, Washington, United States11-08 12:56
- 0.842 km SSE of Enumclaw, Washington, United States11-04 23:40
- 0.840 km SSE of Graham, Washington, United States11-10 03:50
- 0.864 km SE of Graham, Washington, United States11-12 23:19
- 0.740 km SSE of Graham, Washington, United States11-05 13:59
- 0.739 km SSE of Graham, Washington, United States11-10 00:54
- 0.639 km SE of Orting, Washington, United States11-10 01:47
- 0.245 km SSE of Orting, Washington, United States11-10 18:34
- 0.142 km SSE of Enumclaw, Washington, United States11-05 03:57
Did you feel it?
Reports from people help show where shaking was strong. They are anonymous and shown here in aggregate.
Reports on SeismoAtlas
No reports yet.
Event id uw714135001. First recorded here 4 Nov 2026, 21:31:25 UTC. Solutions: USGS · UW (usgs:uw714135001). Cite as: SeismoAtlas, “M0.6 earthquake 40 km SSE of Graham, Washington, United States”, https://seismoatlas.com/earthquake/uw714135001-m0-6-earthquake-40-km-sse-of-graham-washington-united-states, data from USGS.
JSON: /api/v1/events/uw714135001. SeismoAtlas is not an official warning service.