QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0ml

30 km N of Amboy, Washington

· 17 km deep · released about 29 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cowlitz County 22 kmSkamania County 38 kmLewis County 44 kmClark County 47 kmColumbia County 60 kmMultnomah County 71 kmWahkiakum County 80 kmWashington County 89 kmThurston County 90 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 2.0 (ml)
Depth
17 km below the surface
Felt
no reports yet
Nearest
Cowlitz County, 22 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 581 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 29 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 520,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 370,000× the energy of this one
  3. Around the size people start to feel M 3.0 33× the energy of this one
  4. This earthquake M 2.0 about 29 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 46.1865, -122.3937. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cowlitz County, WA 22 km (14 mi) E of here earthquakes near Cowlitz County
Skamania County, WA 38 km (24 mi) WNW of here earthquakes near Skamania County
Lewis County, WA 44 km (27 mi) S of here earthquakes near Lewis County
Clark County, WA 47 km (29 mi) N of here earthquakes near Clark County
Columbia County, OR 60 km (37 mi) ENE of here earthquakes near Columbia County
Multnomah County, OR 71 km (44 mi) N of here earthquakes near Multnomah County

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

Aftershocks so far

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

  1. 1.5 2 km SSW of Yacolt, Washington
  2. 1.5 32 km N of Amboy, Washington
  3. 1.6 32 km N of Amboy, Washington
  4. 1.6 12 km SW of Mossyrock, Washington
  5. 1.7 3 km NW of Venersborg, Washington
  6. 1.6 10 km SSE of Toledo, Washington
  7. 1.8 7 km SSE of Mossyrock, Washington
  8. 1.6 4 km SSW of Amboy, Washington
  9. 1.7 37 km NNE of Amboy, Washington
  10. 1.6 5 km SW of Yacolt, Washington
  11. 1.8 10 km NE of Castle Rock, Washington
  12. 1.7 5 km SSE of Yacolt, Washington
  13. 1.9 21 km SSE of Mossyrock, Washington
  14. 1.7 25 km S of Morton, Washington
  15. 1.5 10 km NE of Castle Rock, 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.