QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

11 km WSW of Mineral, Washington

· 16 km deep · released about 10 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lewis County 12 kmPierce County 43 kmThurston County 47 kmCowlitz County 61 kmSkamania County 79 kmWahkiakum County 95 kmKing County 97 kmMason County 98 kmColumbia County 101 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 1.7 (ml)
Depth
16 km below the surface
Felt
no reports yet
Nearest
Lewis County, 12 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 415 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 10 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 95× the energy of this one
  4. This earthquake M 1.7 about 10 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 46.6858, -122.3273. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lewis County, WA 12 km (8 mi) NNE of here earthquakes near Lewis County
Pierce County, WA 43 km (27 mi) SSW of here earthquakes near Pierce County
Thurston County, WA 47 km (29 mi) SE of here earthquakes near Thurston County
Cowlitz County, WA 61 km (38 mi) NNE of here earthquakes near Cowlitz County
Skamania County, WA 79 km (49 mi) NNW of here earthquakes near Skamania County
Wahkiakum County, WA 95 km (59 mi) ENE of here earthquakes near Wahkiakum County

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

Aftershocks so far

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

  1. 2.4 8 km E of Ashford, Washington
  2. 1.5 0 km NNW of Eatonville, Washington
  3. 1.7 1 km SW of Kapowsin, Washington
  4. 1.6 9 km S of Mossyrock, Washington
  5. 1.6 1 km SSE of Kapowsin, Washington
  6. 1.5 11 km NNE of Ashford, Washington
  7. 1.5 2 km SSE of Kapowsin, Washington
  8. 2.0 5 km WSW of Crocker, Washington
  9. 1.6 12 km SW of Mossyrock, Washington
  10. 1.7 1 km SE of Kapowsin, Washington
  11. 2.0 10 km ESE of Ashford, Washington
  12. 1.8 7 km SSE of Mossyrock, Washington
  13. 1.5 2 km WNW of Kapowsin, Washington
  14. 1.5 14 km SSW of Alder, Washington
  15. 1.6 2 km ESE of Kapowsin, 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.