M1.0 earthquake 11 km NE of Snoqualmie, Washington, United States
A magnitude 1.0 earthquake struck 11 km NE of Snoqualmie, Washington, United States at 11:50 local time (19:50 UTC) on 1 Nov 2026, at a depth of 7 km, according to USGS.
Data: USGS · updated 2026-11-02 04:13 UTC · reviewed
- Magnitude
- 1.0micro
local magnitude (Richter) (ml) - Depth
- 6.6 km
- Status
- Reviewed
- Origin time
- 2026-11-01 19:50:12 UTC
- Local: 1 Nov 2026, 11:50:12 (America/Los Angeles)
- Epicentre
- 47.605° N, 121.738° 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 |
|---|---|---|
| SnoqualmieWashington, United States · pop. 13,169 | 11 km | INot felt |
| North BendWashington, United States · pop. 6,679 | 12 km | INot felt |
| City of SammamishWashington, United States · pop. 45,780 | 23 km | INot felt |
| IssaquahWashington, United States · pop. 36,081 | 23 km | INot felt |
| SammamishWashington, United States · pop. 52,253 | 26 km | INot felt |
| West Lake SammamishWashington, United States · pop. 33,929 | 27 km | INot felt |
| SeattleWashington, United States · pop. 780,995 | 44 km | INot felt |
| VictoriaBritish Columbia, Canada · pop. 289,625 | 152 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 | 1.0 ml | 6.6 km | 47.60° N, 121.74° W | – | Reviewed |
How big was it?
Usually not felt. Recorded by nearby seismometers; thousands occur worldwide every day.
It released roughly the energy of 415 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 7 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 1.1× taller on a seismogram. Energy: 477 g of TNT vs 415 g of TNT.
Each square is the energy of one M1.0. Energy from log₁₀E = 1.5M + 4.8.
Aftershocks and nearby activity
8 later earthquakes within 30 km; the largest was M2.0 7 days ago. 5 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.
Mainshock M1.0
8 later earthquakes nearby. Aftershock rates typically fall off roughly as 1/time (Omori's law).
| Time after mainshock (hours) | Magnitude | Depth (km) |
|---|---|---|
| 26.00 | 1.0 | 15 |
| 43.23 | 1.1 | 22 |
| 53.47 | 1.1 | 16 |
| 53.99 | 0.6 | 12 |
| 54.45 | 1.5 | 17 |
| 102.12 | 2.0 | 8 |
| 236.98 | 1.5 | 17 |
| 253.51 | 1.3 | 15 |
- 2.021 km E of North Bend, Washington, United States11-06 01:57
- 1.513 km NNE of Snoqualmie, Washington, United States11-04 02:17
- 1.514 km ESE of Duvall, Washington, United States11-11 16:48
- 1.3Near Union Hill-Novelty Hill, Washington, United States11-12 09:20
- 1.16 km SSE of Issaquah, Washington, United States11-03 15:04
- 1.112 km NNE of Snoqualmie, Washington, United States11-04 01:18
- 1.0Near Snoqualmie, Washington, United States11-02 21:49
- 0.611 km N of Snoqualmie, Washington, United States11-04 01:49
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 uw714133381. First recorded here 2 Nov 2026, 04:15:39 UTC. Solutions: USGS · UW (usgs:uw714133381). Cite as: SeismoAtlas, “M1.0 earthquake 11 km NE of Snoqualmie, Washington, United States”, https://seismoatlas.com/earthquake/uw714133381-m1-0-earthquake-11-km-ne-of-snoqualmie-washington-united-states, data from USGS.
JSON: /api/v1/events/uw714133381. SeismoAtlas is not an official warning service.