M0.4 earthquake 55 km NNE of Battle Ground, Washington, United States
A magnitude 0.4 earthquake struck 55 km NNE of Battle Ground, Washington, United States at 13:34 local time (20:34 UTC) on 24 Oct 2026, at a depth of 6 km, according to USGS.
Data: USGS · updated 2026-10-26 22:49 UTC · reviewed
- Magnitude
- 0.4micro
local magnitude (Richter) (ml) - Depth
- 6.2 km
- Status
- Reviewed
- Origin time
- 2026-10-24 20:34:51 UTC
- Local: 24 Oct 2026, 13:34:51 (America/Los Angeles)
- Epicentre
- 46.209° N, 122.188° 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 |
|---|---|---|
| Battle GroundWashington, United States · pop. 19,407 | 55 km | INot felt |
| WoodlandWashington, United States · pop. 5,842 | 55 km | INot felt |
| LongviewWashington, United States · pop. 36,848 | 58 km | INot felt |
| CamasWashington, United States · pop. 21,846 | 71 km | INot felt |
| VancouverWashington, United States · pop. 196,442 | 73 km | INot felt |
| GreshamOregon, United States · pop. 110,553 | 81 km | INot felt |
| PortlandOregon, United States · pop. 652,503 | 86 km | INot felt |
| SeattleWashington, United States · pop. 780,995 | 156 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 | 0.4 ml | 6.2 km | 46.21° N, 122.19° W | – | Reviewed |
How big was it?
Usually not felt. Recorded by nearby seismometers; thousands occur worldwide every day.
It released roughly the energy of 52 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 6 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 9.1× the energy of M0.4, and its waves are about 4.4× taller on a seismogram. Energy: 477 g of TNT vs 52 g of TNT.
Each square is the energy of one M0.4. Energy from log₁₀E = 1.5M + 4.8.
Aftershocks and nearby activity
11 later earthquakes within 30 km; the largest was M0.8 12 days ago. 13 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.
Mainshock M0.4
11 later earthquakes nearby. Aftershock rates typically fall off roughly as 1/time (Omori's law).
| Time after mainshock (hours) | Magnitude | Depth (km) |
|---|---|---|
| 66.02 | 0.6 | 10 |
| 76.56 | 0.7 | 0 |
| 82.60 | 0.2 | 9 |
| 110.19 | 0.8 | 8 |
| 131.12 | 0.1 | 0 |
| 157.14 | 0.1 | 2 |
| 161.03 | 0.3 | 10 |
| 162.39 | 0.8 | 3 |
| 164.89 | 0.6 | 5 |
| 205.09 | 0.4 | 11 |
| 211.08 | 0.3 | 3 |
- 0.854 km NNE of Battle Ground, Washington, United States10-31 14:58
- 0.857 km ESE of Chehalis, Washington, United States10-29 10:46
- 0.754 km NNE of Battle Ground, Washington, United States10-28 01:08
- 0.654 km NNE of Battle Ground, Washington, United States10-31 17:28
- 0.665 km NE of Battle Ground, Washington, United States10-27 14:36
- 0.449 km NE of Battle Ground, Washington, United States11-02 09:40
- 0.354 km NNE of Battle Ground, Washington, United States11-02 15:39
- 0.361 km NNE of Battle Ground, Washington, United States10-31 13:36
- 0.263 km NE of Battle Ground, Washington, United States10-28 07:11
- 0.150 km NNE of Battle Ground, Washington, United States10-30 07:42
- 0.154 km NNE of Battle Ground, Washington, United States10-31 09:43
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 uw714127432. First recorded here 26 Oct 2026, 22:56:30 UTC. Solutions: USGS · UW (usgs:uw714127432). Cite as: SeismoAtlas, “M0.4 earthquake 55 km NNE of Battle Ground, Washington, United States”, https://seismoatlas.com/earthquake/uw714127432-m0-4-earthquake-55-km-nne-of-battle-ground-washington-united-states, data from USGS.
JSON: /api/v1/events/uw714127432. SeismoAtlas is not an official warning service.