QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

3 km W of Federal Way, Washington

· 20 km deep · released about 7.3 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Pierce County 34 kmKitsap County 42 kmKing County 44 kmThurston County 56 kmMason County 62 kmLewis County 82 kmSnohomish County 93 kmIsland County 96 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 1.6 (ml)
Depth
20 km below the surface
Felt
no reports yet
Nearest
Pierce County, 34 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2785 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 7.3 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 2,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,500,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.3 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 47.3200, -122.3562. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Pierce County, WA 34 km (21 mi) NNW of here earthquakes near Pierce County
Kitsap County, WA 42 km (26 mi) SSE of here earthquakes near Kitsap County
King County, WA 44 km (27 mi) WSW of here earthquakes near King County
Thurston County, WA 56 km (35 mi) NE of here earthquakes near Thurston County
Mason County, WA 62 km (38 mi) E of here earthquakes near Mason County
Lewis County, WA 82 km (51 mi) N of here earthquakes near Lewis County

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

Aftershocks so far

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

  1. 2.1 1 km NNW of Artondale, Washington
  2. 1.7 2 km N of Lakeland South, Washington
  3. 2.7 0 km WSW of Klahanie, Washington
  4. 1.8 3 km E of Home, Washington
  5. 1.8 1 km S of Auburn, Washington
  6. 1.5 2 km S of Black Diamond, Washington
  7. 1.5 5 km SSW of Gorst, Washington
  8. 1.8 3 km NE of Mirrormont, Washington
  9. 1.7 3 km ENE of Enetai, Washington
  10. 1.7 1 km SSE of Kapowsin, Washington
  11. 1.9 3 km WSW of Wilderness Rim, Washington
  12. 2.1 Puget Sound region, Washington
  13. 1.5 3 km ENE of Enetai, Washington
  14. 1.6 1 km SW of Keyport, Washington
  15. 1.5 2 km N of Boulevard Park, 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.