QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

3 km SSE of Des Moines, Washington

· 20 km deep · released about 5.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Pierce County 38 kmKing County 38 kmKitsap County 39 kmThurston County 62 kmMason County 65 kmSnohomish County 86 kmLewis County 88 kmIsland County 91 kmJefferson County 103 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
20 km below the surface
Felt
no reports yet
Nearest
Pierce County, 38 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 554 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 5.6 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 2,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.6 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 47.3720, -122.3110. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Pierce County, WA 38 km (23 mi) NNW of here earthquakes near Pierce County
King County, WA 38 km (24 mi) WSW of here earthquakes near King County
Kitsap County, WA 39 km (24 mi) SE of here earthquakes near Kitsap County
Thurston County, WA 62 km (39 mi) NE of here earthquakes near Thurston County
Mason County, WA 65 km (40 mi) E of here earthquakes near Mason County
Snohomish County, WA 86 km (54 mi) SSW of here earthquakes near Snohomish 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. 2.8 8 km NNE of Snoqualmie, Washington
  2. 1.8 1 km N of Fairwood, Washington
  3. 1.8 13 km ESE of Enumclaw, Washington
  4. 2.0 1 km ENE of Enetai, Washington
  5. 1.7 1 km SE of Kapowsin, Washington
  6. 1.6 4 km SE of Ames Lake, Washington
  7. 2.0 4 km WNW of Gorst, Washington
  8. 1.7 5 km N of Belfair, Washington
  9. 1.6 6 km WNW of DuPont, Washington
  10. 1.5 3 km SSW of Gorst, Washington
  11. 2.6 3 km WSW of Erlands Point-Kitsap Lake, Washington
  12. 1.9 1 km N of Enetai, Washington
  13. 1.5 2 km ESE of Kapowsin, Washington
  14. 2.0 0 km ESE of Erlands Point-Kitsap Lake, Washington
  15. 1.8 1 km NNE of Burley, 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.