QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

8 km W of West Longview, WA

· 23 km deep · released about 180 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Columbia County 25 kmWahkiakum County 28 kmCowlitz County 33 kmClatsop County 49 kmClark County 65 kmPacific County 68 kmWashington County 68 kmLewis County 73 kmMultnomah County 87 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 2.5 (ml)
Depth
23 km below the surface
Felt
no reports yet
Nearest
Columbia County, 25 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3278 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 180 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 86,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 61,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.4× the energy of this one
  4. This earthquake M 2.5 about 180 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 46.1635, -123.1088. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Columbia County, OR 25 km (15 mi) N of here earthquakes near Columbia County
Wahkiakum County, WA 28 km (18 mi) ESE of here earthquakes near Wahkiakum County
Cowlitz County, WA 33 km (21 mi) W of here earthquakes near Cowlitz County
Clatsop County, OR 49 km (30 mi) ENE of here earthquakes near Clatsop County
Clark County, WA 65 km (40 mi) NW of here earthquakes near Clark County
Pacific County, WA 68 km (42 mi) SE of here earthquakes near Pacific County

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

Aftershocks so far

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

  1. 1.9 6 km NNW of West Longview, Washington
  2. 1.7 11 km WNW of Warren, Oregon
  3. 1.6 20 km NE of Kalama, Washington
  4. 1.8 2 km SSW of Cathlamet, Washington
  5. 1.6 8 km E of Kalama, Washington
  6. 1.6 15 km SW of Ryderwood, Washington
  7. 1.7 3 km WSW of Cathlamet, Washington
  8. 1.8 18 km ESE of Castle Rock, Washington
  9. 1.8 8 km NNW of West Longview, Washington
  10. 1.7 5 km WNW of Deer Island, Oregon
  11. 1.5 14 km NW of West Longview, Washington
  12. 2.0 12 km NW of West Longview, Washington
  13. 2.4 11 km S of Westport, Oregon
  14. 2.1 6 km NW of West Longview, Washington
  15. 1.8 11 km NNE of Skamokawa Valley, 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.