QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

23 km NE of Amboy, Washington

· 0.6 km deep · released about 20 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Skamania County 20 kmClark County 37 kmCowlitz County 40 kmMultnomah County 58 kmLewis County 61 kmColumbia County 68 kmHood River County 73 kmWashington County 88 kmWahkiakum County 97 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 1.9 (ml)
Depth
0.6 km below the surface
Felt
no reports yet
Nearest
Skamania County, 20 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2058 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 20 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 760,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 540,000× the energy of this one
  3. Around the size people start to feel M 3.0 48× the energy of this one
  4. This earthquake M 1.9 about 20 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.

Where

Epicentre 46.0468, -122.2115. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Skamania County, WA 20 km (12 mi) W of here earthquakes near Skamania County
Clark County, WA 37 km (23 mi) NE of here earthquakes near Clark County
Cowlitz County, WA 40 km (25 mi) ESE of here earthquakes near Cowlitz County
Multnomah County, OR 58 km (36 mi) NNE of here earthquakes near Multnomah County
Lewis County, WA 61 km (38 mi) SSE of here earthquakes near Lewis County
Columbia County, OR 68 km (42 mi) E of here earthquakes near Columbia County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

57 earthquakes have been recorded within 50 km since this one.

  1. 1.6 3 km SW of Yacolt, Washington
  2. 1.7 39 km NNE of Amboy, Washington
  3. 1.6 3 km WSW of Yacolt, Washington
  4. 1.7 4 km WSW of Yacolt, Washington
  5. 2.4 Washington
  6. 1.5 26 km S of Morton, Washington
  7. 2.4 30 km ENE of Amboy, Washington
  8. 2.4 29 km ENE of Amboy, Washington
  9. 1.6 31 km NNE of Amboy, Washington
  10. 1.6 10 km SSE of Mossyrock, Washington
  11. 1.6 3 km E of Battle Ground, Washington
  12. 1.7 3 km NNE of La Center, Washington
  13. 1.7 23 km S of Morton, Washington
  14. 2.0 19 km N of Amboy, Washington
  15. 1.5 37 km NNE of Amboy, Washington

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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.