QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

6 km ESE of Ashford, Washington

· 3.4 km deep · released about 7.8 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lewis County 37 kmPierce County 39 kmThurston County 71 kmSkamania County 79 kmCowlitz County 82 kmKing County 85 kmYakima County 97 kmKittitas County 106 kmKitsap County 114 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 1.6 (ml)
Depth
3.4 km below the surface
Felt
no reports yet
Nearest
Lewis County, 37 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 568 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 7.8 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,900,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 120× the energy of this one
  4. This earthquake M 1.6 about 7.8 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 46.7343, -121.9488. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lewis County, WA 37 km (23 mi) ENE of here earthquakes near Lewis County
Pierce County, WA 39 km (24 mi) SSE of here earthquakes near Pierce County
Thurston County, WA 71 km (44 mi) ESE of here earthquakes near Thurston County
Skamania County, WA 79 km (49 mi) N of here earthquakes near Skamania County
Cowlitz County, WA 82 km (51 mi) NE of here earthquakes near Cowlitz County
King County, WA 85 km (53 mi) S of here earthquakes near King County

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

Aftershocks so far

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

  1. 1.6 7 km ESE of Ashford, Washington
  2. 2.3 14 km NNE of Ashford, Washington
  3. 1.8 14 km NNE of Ashford, Washington
  4. 1.5 4 km SSE of Carbonado, Washington
  5. 1.5 4 km SSE of Carbonado, Washington
  6. 1.8 20 km SSW of Morton, Washington
  7. 1.9 13 km ESE of Enumclaw, Washington
  8. 2.9 4 km W of Ashford, Washington
  9. 1.6 13 km ESE of Enumclaw, Washington
  10. 1.9 2 km SSE of Kapowsin, Washington
  11. 1.6 23 km ENE of Ashford, Washington
  12. 1.5 11 km ESE of Enumclaw, Washington
  13. 1.6 2 km SE of Kapowsin, Washington
  14. 1.6 5 km ESE of Mossyrock, Washington
  15. 1.8 12 km W of Greenwater, 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.