QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

16 km NE of Kalama, Washington

· 14 km deep · released about 140 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cowlitz County 9 kmColumbia County 36 kmClark County 41 kmLewis County 57 kmSkamania County 58 kmWahkiakum County 60 kmMultnomah County 66 kmWashington County 70 kmClatsop County 79 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
14 km below the surface
Felt
5 reports · strongest reported intensity III
Nearest
Cowlitz County, 9 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2098 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 5 people have reported feeling it to USGS.

How big was it?

This earthquake released about 140 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 5.8 110,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 75,000× the energy of this one
  3. Around the size people start to feel M 3.0 6.7× the energy of this one
  4. This earthquake M 2.5 about 140 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 46.1128, -122.6912. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cowlitz County, WA 9 km (6 mi) S of here earthquakes near Cowlitz County
Columbia County, OR 36 km (22 mi) ENE of here earthquakes near Columbia County
Clark County, WA 41 km (26 mi) NNW of here earthquakes near Clark County
Lewis County, WA 57 km (36 mi) SSW of here earthquakes near Lewis County
Skamania County, WA 58 km (36 mi) W of here earthquakes near Skamania County
Wahkiakum County, WA 60 km (37 mi) ESE of here earthquakes near Wahkiakum County

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

Aftershocks so far

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

  1. 1.6 2 km ESE of Lewisville, Washington
  2. 2.0 37 km NNE of Amboy, Washington
  3. 2.8 21 km E of Castle Rock, Washington
  4. 1.5 21 km E of Castle Rock, Washington
  5. 2.5 21 km E of Castle Rock, Washington
  6. 2.4 9 km SE of Mossyrock, Washington
  7. 1.6 37 km NNE of Amboy, Washington
  8. 1.5 28 km N of Amboy, Washington
  9. 1.7 22 km S of Morton, Washington
  10. 1.7 2 km WSW of Columbia City, Oregon
  11. 1.8 20 km SSW of Morton, Washington
  12. 1.7 16 km NNE of Amboy, Washington
  13. 1.5 2 km SSE of Lewisville, Washington
  14. 1.7 26 km N of Amboy, Washington
  15. 2.0 1 km NNW of Salmon Creek, 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.