QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

13 km ESE of Yacolt, Washington

· 14 km deep · released about 10 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Clark County 19 kmMultnomah County 32 kmSkamania County 33 kmCowlitz County 54 kmHood River County 57 kmColumbia County 66 kmWashington County 72 kmClackamas County 73 kmLewis County 86 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
14 km below the surface
Felt
no reports yet
Nearest
Clark County, 19 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2275 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 1,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 92× 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 45.8120, -122.2530. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Clark County, WA 19 km (12 mi) ENE of here earthquakes near Clark County
Multnomah County, OR 32 km (20 mi) NNE of here earthquakes near Multnomah County
Skamania County, WA 33 km (21 mi) SW of here earthquakes near Skamania County
Cowlitz County, WA 54 km (34 mi) SE of here earthquakes near Cowlitz County
Hood River County, OR 57 km (36 mi) NW of here earthquakes near Hood River County
Columbia County, OR 66 km (41 mi) ESE of here earthquakes near Columbia County

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

Aftershocks so far

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

  1. 1.7 4 km ENE of Lewisville, Washington
  2. 1.6 3 km W of Yacolt, Washington
  3. 1.7 1 km NNE of Battle Ground, Washington
  4. 1.8 2 km E of Saint Helens, Oregon
  5. 1.5 2 km WSW of Yacolt, Washington
  6. 2.0 4 km SE of Mill Plain, Washington
  7. 2.1 11 km ENE of Prescott, Oregon
  8. 1.6 4 km NNW of Lewisville, Washington
  9. 2.6 3 km SE of Mill Plain, Washington
  10. 1.6 2 km NW of Carson, Washington
  11. 1.6 2 km ESE of Lewisville, Washington
  12. 2.0 37 km NNE of Amboy, Washington
  13. 1.6 37 km NNE of Amboy, Washington
  14. 1.5 28 km N of Amboy, Washington
  15. 1.5 4 km NNW of North Bonneville, 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.