QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

37 km SSE of Morton, Washington

· 7.4 km deep · released about 20 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Skamania County 27 kmLewis County 43 kmCowlitz County 44 kmClark County 60 kmMultnomah County 81 kmColumbia County 82 kmHood River County 88 kmPierce County 90 kmThurston County 95 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 1.9 (ml)
Depth
7.4 km below the surface
Felt
no reports yet
Nearest
Skamania County, 27 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2788 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 20 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 760,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 540,000× the energy of this one
  3. Around the size people start to feel M 3.0 48× the energy of this one
  4. This earthquake M 1.9 about 20 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 46.2412, -122.1100. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Skamania County, WA 27 km (17 mi) NNW of here earthquakes near Skamania County
Lewis County, WA 43 km (27 mi) SSE of here earthquakes near Lewis County
Cowlitz County, WA 44 km (27 mi) E of here earthquakes near Cowlitz County
Clark County, WA 60 km (37 mi) NNE of here earthquakes near Clark County
Multnomah County, OR 81 km (50 mi) NNE of here earthquakes near Multnomah County
Columbia County, OR 82 km (51 mi) ENE of here earthquakes near Columbia 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. 1.6 18 km SSE of Mossyrock, Washington
  2. 1.6 5 km ESE of Mossyrock, Washington
  3. 1.7 21 km E of Castle Rock, Washington
  4. 1.6 21 km E of Castle Rock, Washington
  5. 2.1 9 km NNE of Mossyrock, Washington
  6. 1.7 21 km E of Castle Rock, Washington
  7. 2.1 29 km E of Castle Rock, Washington
  8. 1.6 21 km E of Castle Rock, Washington
  9. 1.7 20 km SE of Toledo, Washington
  10. 2.3 14 km ENE of Yacolt, Washington
  11. 1.7 14 km NNW of Carson, Washington
  12. 1.9 23 km NE of Amboy, Washington
  13. 2.2 37 km SSE of Morton, Washington
  14. 1.6 14 km SE of Mossyrock, Washington
  15. 1.6 15 km ESE of Morton, 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.