QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

14 km NE of Amboy, Washington

· 11 km deep · released about 5.9 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Skamania County 27 kmClark County 28 kmCowlitz County 37 kmMultnomah County 50 kmColumbia County 61 kmLewis County 66 kmHood River County 73 kmWashington County 79 kmClackamas County 93 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 1.5 (ml)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Skamania County, 27 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 537 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 5.9 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,800,000× the energy of this one
  3. Around the size people start to feel M 3.0 160× the energy of this one
  4. This earthquake M 1.5 about 5.9 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 45.9898, -122.2968. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Skamania County, WA 27 km (17 mi) W of here earthquakes near Skamania County
Clark County, WA 28 km (18 mi) NNE of here earthquakes near Clark County
Cowlitz County, WA 37 km (23 mi) SE of here earthquakes near Cowlitz County
Multnomah County, OR 50 km (31 mi) N of here earthquakes near Multnomah County
Columbia County, OR 61 km (38 mi) E of here earthquakes near Columbia County
Lewis County, WA 66 km (41 mi) S of here earthquakes near Lewis 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 27 km N of Amboy, Washington
  2. 2.1 4 km W of Yacolt, Washington
  3. 1.8 3 km E of Kalama, Washington
  4. 2.3 37 km NNE of Amboy, Washington
  5. 1.6 2 km NE of Lewisville, Washington
  6. 2.6 18 km NE of Amboy, Washington
  7. 1.5 37 km NNE of Amboy, Washington
  8. 1.6 20 km E of Castle Rock, Washington
  9. 1.6 38 km NE of Amboy, Washington
  10. 2.1 4 km WSW of Yacolt, Washington
  11. 1.9 38 km NE of Amboy, Washington
  12. 1.9 1 km SE of Vancouver, Washington
  13. 1.6 5 km SSW of Yacolt, Washington
  14. 1.6 4 km NNE of Kalama, Washington
  15. 1.5 2 km SSW of Yacolt, 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.