QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

10 km ESE of Centralia, Washington

· 55 km deep · released about 5.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Thurston County 28 kmLewis County 36 kmCowlitz County 55 kmWahkiakum County 63 kmPierce County 66 kmPacific County 74 kmMason County 79 kmColumbia County 85 kmGrays Harbor County 90 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
55 km below the surface
Felt
no reports yet
Nearest
Thurston County, 28 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1097 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 5.4 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 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 46.6815, -122.8277. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Thurston County, WA 28 km (18 mi) S of here earthquakes near Thurston County
Lewis County, WA 36 km (22 mi) WNW of here earthquakes near Lewis County
Cowlitz County, WA 55 km (34 mi) NNW of here earthquakes near Cowlitz County
Wahkiakum County, WA 63 km (39 mi) NE of here earthquakes near Wahkiakum County
Pierce County, WA 66 km (41 mi) SW of here earthquakes near Pierce County
Pacific County, WA 74 km (46 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

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

  1. 2.7 7 km ESE of Mossyrock, Washington
  2. 1.7 5 km SW of Napavine, Washington
  3. 2.2 11 km WSW of Mineral, Washington
  4. 1.6 6 km WSW of Castle Rock, Washington
  5. 1.6 10 km NE of Castle Rock, Washington
  6. 1.6 10 km NE of Castle Rock, Washington
  7. 1.6 5 km NW of Pe Ell, Washington
  8. 2.1 6 km SE of Mossyrock, Washington
  9. 2.3 5 km W of Napavine, Washington
  10. 1.5 6 km SW of Morton, Washington
  11. 1.6 8 km SSE of McKenna, Washington
  12. 1.6 19 km SSE of Mossyrock, Washington
  13. 1.6 18 km SSE of Mossyrock, Washington
  14. 1.7 11 km NNW of Morton, Washington
  15. 1.8 7 km SE of McKenna, 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.