QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

0 km NNW of Des Moines, Washington

· 21 km deep · released about 44 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kitsap County 35 kmKing County 38 kmPierce County 42 kmMason County 64 kmThurston County 65 kmSnohomish County 83 kmIsland County 87 kmLewis County 92 kmJefferson County 100 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 2.1 (ml)
Depth
21 km below the surface
Felt
9 reports · strongest reported intensity III
Nearest
Kitsap County, 35 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3341 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 9 people have reported feeling it to USGS.

How big was it?

This earthquake released about 44 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 340,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 240,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. This earthquake M 2.1 about 44 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 47.4085, -122.3305. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kitsap County, WA 35 km (22 mi) SE of here earthquakes near Kitsap County
King County, WA 38 km (24 mi) WSW of here earthquakes near King County
Pierce County, WA 42 km (26 mi) NNW of here earthquakes near Pierce County
Mason County, WA 64 km (40 mi) E of here earthquakes near Mason County
Thurston County, WA 65 km (40 mi) NE of here earthquakes near Thurston County
Snohomish County, WA 83 km (52 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

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

  1. 1.6 3 km SW of Bethel, Washington
  2. 2.2 4 km SE of Orting, Washington
  3. 1.5 1 km N of Carnation, Washington
  4. 2.4 4 km W of Burley, Washington
  5. 1.6 2 km SW of Suquamish, Washington
  6. 2.0 Puget Sound region, Washington
  7. 1.6 3 km WNW of Vashon, Washington
  8. 1.6 0 km SSW of Beaux Arts Village, Washington
  9. 1.5 1 km NE of Enetai, Washington
  10. 1.8 4 km WSW of Inglewood-Finn Hill, Washington
  11. 1.6 8 km ESE of Enumclaw, Washington
  12. 1.5 2 km ENE of Union Hill-Novelty Hill, Washington
  13. 1.6 1 km NE of Yarrow Point, Washington
  14. 2.0 5 km WSW of Chico, Washington
  15. 1.8 8 km NE of Bainbridge Island, 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.