M-0.3 earthquake 20 km W of Port Orchard, Washington, United States
A magnitude -0.3 earthquake struck 20 km W of Port Orchard, Washington, United States at 06:56 local time (14:56 UTC) on 9 Nov 2026, at a depth of 11 km, according to USGS.
Data: USGS · updated 2026-11-09 21:21 UTC · reviewed
- Magnitude
- -0.3micro
duration magnitude (md) - Depth
- 10.8 km
- Status
- Reviewed
- Origin time
- 2026-11-09 14:56:00 UTC
- Local: 9 Nov 2026, 06:56:00 (America/Los Angeles)
- Epicentre
- 47.532° N, 122.910° 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 |
|---|---|---|
| Port OrchardWashington, United States · pop. 13,607 | 20 km | INot felt |
| SilverdaleWashington, United States · pop. 19,204 | 20 km | INot felt |
| BremertonWashington, United States · pop. 39,520 | 21 km | INot felt |
| Bainbridge IslandWashington, United States · pop. 23,840 | 31 km | INot felt |
| University PlaceWashington, United States · pop. 32,842 | 42 km | INot felt |
| BurienWashington, United States · pop. 50,467 | 43 km | INot felt |
| SeattleWashington, United States · pop. 780,995 | 44 km | INot felt |
| VictoriaBritish Columbia, Canada · pop. 289,625 | 106 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 | -0.3 md | 10.8 km | 47.53° N, 122.91° W | – | Reviewed |
How big was it?
Usually not felt. Recorded by nearby seismometers; thousands occur worldwide every day.
It released roughly the energy of 6 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 11 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 86× the energy of M-0.3, and its waves are about 19× taller on a seismogram. Energy: 477 g of TNT vs 6 g of TNT.
Each square is the energy of one M-0.3. Energy from log₁₀E = 1.5M + 4.8.
Aftershocks and nearby activity
2 later earthquakes within 30 km; the largest was M1.9 5 h 25 min ago. 5 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.
Mainshock M-0.3
2 later earthquakes nearby. Aftershock rates typically fall off roughly as 1/time (Omori's law).
| Time after mainshock (hours) | Magnitude | Depth (km) |
|---|---|---|
| 0.84 | 0.5 | 22 |
| 100.84 | 1.9 | 0 |
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 uw714136521. First recorded here 9 Nov 2026, 21:22:40 UTC. Solutions: USGS · UW (usgs:uw714136521). Cite as: SeismoAtlas, “M-0.3 earthquake 20 km W of Port Orchard, Washington, United States”, https://seismoatlas.com/earthquake/uw714136521-m-0-3-earthquake-20-km-w-of-port-orchard-washington-united-states, data from USGS.
JSON: /api/v1/events/uw714136521. SeismoAtlas is not an official warning service.