QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

27 km ENE of Yacolt, Washington

· 10 km deep · released about 67 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Skamania County 12 kmClark County 37 kmMultnomah County 53 kmCowlitz County 53 kmHood River County 60 kmLewis County 73 kmColumbia County 77 kmClackamas County 89 kmWashington County 91 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 2.2 (md)
Depth
10 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Skamania County, 12 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 67 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 230,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 160,000× the energy of this one
  3. Around the size people start to feel M 3.0 14× the energy of this one
  4. This earthquake M 2.2 about 67 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 45.9597, -122.0843. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Skamania County, WA 12 km (8 mi) SW of here earthquakes near Skamania County
Clark County, WA 37 km (23 mi) NE of here earthquakes near Clark County
Multnomah County, OR 53 km (33 mi) NNE of here earthquakes near Multnomah County
Cowlitz County, WA 53 km (33 mi) ESE of here earthquakes near Cowlitz County
Hood River County, OR 60 km (37 mi) NNW of here earthquakes near Hood River County
Lewis County, WA 73 km (45 mi) SSE of here earthquakes near Lewis County

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

Aftershocks so far

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

  1. 0.2 37 km NNE of Amboy, Washington
  2. 0.5 38 km NNE of Amboy, Washington
  3. 1.5 5 km NNW of Venersborg, Washington
  4. 0.6 38 km NNE of Amboy, Washington
  5. 1.7 18 km N of Amboy, Washington
  6. 0.3 32 km NE of Amboy, Washington
  7. 1.3 38 km NNE of Amboy, Washington
  8. 1.0 32 km NNE of Amboy, Washington
  9. 0.0 38 km NE of Amboy, Washington
  10. 1.5 37 km NNE of Amboy, Washington
  11. 1.5 31 km E of Kelso, 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.