QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

30 km ENE of Amboy, Washington

· 11 km deep · released about 10 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Skamania County 13 kmClark County 43 kmCowlitz County 46 kmMultnomah County 61 kmLewis County 62 kmHood River County 70 kmColumbia County 76 kmWashington County 94 kmClackamas County 100 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 1.7 (ml)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Skamania County, 13 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3070 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 10 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 95× the energy of this one
  4. This earthquake M 1.7 about 10 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 46.0558, -122.1173. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Skamania County, WA 13 km (8 mi) WNW of here earthquakes near Skamania County
Clark County, WA 43 km (26 mi) NE of here earthquakes near Clark County
Cowlitz County, WA 46 km (29 mi) ESE of here earthquakes near Cowlitz County
Multnomah County, OR 61 km (38 mi) NNE of here earthquakes near Multnomah County
Lewis County, WA 62 km (38 mi) SSE of here earthquakes near Lewis County
Hood River County, OR 70 km (44 mi) NNW of here earthquakes near Hood River County

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

Aftershocks so far

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

  1. 1.5 28 km NNW of Amboy, Washington
  2. 2.9 Washington-Oregon border region
  3. 1.6 4 km NE of Amboy, Washington
  4. 1.5 2 km W of Yacolt, Washington
  5. 1.7 1 km NE of Lewisville, Washington
  6. 1.6 3 km WSW of Yacolt, Washington
  7. 1.6 14 km SSW of Morton, Washington
  8. 1.6 21 km SSE of Mossyrock, Washington
  9. 1.5 3 km SW of Yacolt, Washington
  10. 1.7 13 km ESE of Yacolt, Washington
  11. 1.8 20 km NNW of Carson, Washington
  12. 2.2 23 km S of Morton, Washington
  13. 1.6 16 km ENE of Kalama, Washington
  14. 1.6 1 km SSW of Cherry Grove, Washington
  15. 1.8 23 km SSE of Mossyrock, 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.