QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0ml

3 km NNE of Winlock, Washington

· -0.4 km deep · released about 28 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cowlitz County 40 kmLewis County 42 kmWahkiakum County 46 kmThurston County 47 kmColumbia County 65 kmPacific County 66 kmClatsop County 81 kmPierce County 84 kmClark County 89 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 2.0 (ml)
Depth
-0.4 km below the surface
Felt
no reports yet
Nearest
Cowlitz County, 40 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 97 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 28 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 540,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 380,000× the energy of this one
  3. Around the size people start to feel M 3.0 34× the energy of this one
  4. This earthquake M 2.0 about 28 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 46.5170, -122.9247. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cowlitz County, WA 40 km (25 mi) NNW of here earthquakes near Cowlitz County
Lewis County, WA 42 km (26 mi) W of here earthquakes near Lewis County
Wahkiakum County, WA 46 km (28 mi) ENE of here earthquakes near Wahkiakum County
Thurston County, WA 47 km (29 mi) S of here earthquakes near Thurston County
Columbia County, OR 65 km (40 mi) N of here earthquakes near Columbia County
Pacific County, WA 66 km (41 mi) E of here earthquakes near Pacific County

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

Aftershocks so far

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

  1. 1.3 20 km E of Castle Rock, Washington
  2. 1.2 12 km S of Rainier, Washington
  3. 0.7 21 km ESE of Castle Rock, Washington
  4. 0.9 20 km E of Castle Rock, Washington
  5. 0.6 21 km ESE of Castle Rock, Washington
  6. 1.5 31 km E of Kelso, Washington
  7. 1.7 20 km E of Castle Rock, Washington
  8. 1.7 6 km W of Mossyrock, Washington
  9. 3.8 20 km E of Castle Rock, Washington
  10. 1.6 6 km NE of Rochester, Washington
  11. 1.6 20 km E of Castle Rock, Washington
  12. 1.5 11 km ENE of East Cathlamet, Washington
  13. 1.6 9 km S of Mossyrock, Washington
  14. 1.5 6 km NW of Winlock, Washington
  15. 1.7 1 km E of Oakville, 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.