Earthquake · reviewed by a seismologist
M 0.2mh
Earthquake near Amboy, WA
USGS: 38 km NNE of Amboy, Washington
82 km (51 mi) NNE of Portland, OR
- When
- 4:59 am PDT on 1 October 2026 ()
- Where
- 38 km (24 mi) NNE of Amboy, WA · earthquakes near Amboy
- Magnitude
- M 0.2 (mh)
- Depth
- 2.3 km below the surface
- Felt
- no reports yet
- Nearest
- Skamania County, 27 km SE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 34 hours ago
A magnitude 0.2 earthquake was recorded 38 km (24 mi) NNE of Amboy, WA, at 4:59 am PDT on 1 October 2026 (11:59 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
How big was it?
This earthquake released about 0.056 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 1.2 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 270,000,000× the energy of this one
- Magna, Utah 2020 M 5.7 190,000,000× the energy of this one
- Around the size people start to feel M 3.0 17,000× the energy of this one
- This earthquake M 0.2 about 0.056 lb of TNT
Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.
For this area
No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.
Before 2016, the USGS record lists 16 earthquakes of M5 or more within 50 km; the five largest:
- 5.7 38 km NNE of Amboy, Washington · 1 km N of this epicentre
- 5.2 37 km NNE of Amboy, Washington · 1 km W of this epicentre
- 5.2 23 km S of Morton, Washington · 17 km NNW of this epicentre
- 5.1 28 km ENE of Amboy, Washington · 21 km SSE of this epicentre
- 5.1 Washington · 3 km NNE of this epicentre
Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.
Where
Epicentre 46.2018, -122.1868. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Skamania County, WA | 27 km (17 mi) | SE | earthquakes near Skamania County |
| Cowlitz County, WA | 38 km (24 mi) | W | earthquakes near Cowlitz County |
| Lewis County, WA | 45 km (28 mi) | NNW | earthquakes near Lewis County |
| Clark County, WA | 53 km (33 mi) | SSW | earthquakes near Clark County |
| Columbia County, OR | 75 km (46 mi) | WSW | earthquakes near Columbia County |
| Multnomah County, OR | 75 km (47 mi) | SSW | earthquakes near Multnomah County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
2 earthquakes have been recorded within 50 km since this one.
Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.
Revisions
USGS refines a solution as more stations report. Every change we have seen is listed here.
| What changed | From | To | When |
|---|---|---|---|
| longitude | -122.19 | -122.19 | |
| latitude | 46.2 | 46.2 | |
| depth | 2.13 | 2.26 | |
| magnitude | 0.58 | 0.18 |
On USGS
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.