QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

14 km NNW of Carson, Washington

· 7.6 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Skamania County 21 kmHood River County 42 kmClark County 44 kmMultnomah County 50 kmCowlitz County 71 kmClackamas County 78 kmKlickitat County 89 kmLewis County 90 kmColumbia 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 1.7 (ml)
Depth
7.6 km below the surface
Felt
no reports yet
Nearest
Skamania County, 21 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 568 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 11 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 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 970,000× the energy of this one
  3. Around the size people start to feel M 3.0 86× the energy of this one
  4. This earthquake M 1.7 about 11 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 45.8383, -121.9222. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Skamania County, WA 21 km (13 mi) S of here earthquakes near Skamania County
Hood River County, OR 42 km (26 mi) NNW of here earthquakes near Hood River County
Clark County, WA 44 km (28 mi) E of here earthquakes near Clark County
Multnomah County, OR 50 km (31 mi) NE of here earthquakes near Multnomah County
Cowlitz County, WA 71 km (44 mi) SE of here earthquakes near Cowlitz County
Clackamas County, OR 78 km (49 mi) NNE of here earthquakes near Clackamas County

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

Aftershocks so far

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

  1. 1.8 3 km ENE of Venersborg, Washington
  2. 1.8 37 km NNE of Amboy, Washington
  3. 2.0 38 km NNE of Amboy, Washington
  4. 1.8 11 km NNW of Carson, Washington
  5. 2.4 3 km W of Yacolt, Washington
  6. 1.9 14 km NE of Sandy, Oregon
  7. 1.6 5 km WSW of Yacolt, Washington
  8. 1.6 5 km NE of Lewisville, Washington
  9. 1.6 34 km NE of Amboy, Washington
  10. 1.6 5 km ENE of Lewisville, Washington
  11. 1.7 2 km WNW of Yacolt, Washington
  12. 1.5 38 km NNE of Amboy, Washington
  13. 1.7 36 km SSE of Morton, Washington
  14. 2.1 38 km NNE of Amboy, Washington
  15. 1.7 Washington-Oregon border region

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.