QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

1 km ESE of Tacoma, Washington

· 27 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Pierce County 30 kmThurston County 46 kmKitsap County 47 kmKing County 52 kmMason County 58 kmLewis County 74 kmSnohomish County 103 kmIsland County 103 kmJefferson County 104 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
27 km below the surface
Felt
no reports yet
Nearest
Pierce County, 30 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 97 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 11 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 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 970,000× the energy of this one
  3. Around the size people start to feel M 3.0 86× the energy of this one
  4. This earthquake M 1.7 about 11 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 47.2463, -122.4228. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Pierce County, WA 30 km (18 mi) NW of here earthquakes near Pierce County
Thurston County, WA 46 km (29 mi) NE of here earthquakes near Thurston County
Kitsap County, WA 47 km (29 mi) SSE of here earthquakes near Kitsap County
King County, WA 52 km (32 mi) WSW of here earthquakes near King County
Mason County, WA 58 km (36 mi) ESE of here earthquakes near Mason County
Lewis County, WA 74 km (46 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

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

  1. 1.1 3 km NNW of Dash Point, Washington
  2. 0.3 11 km SSE of Carbonado, Washington
  3. 2.1 3 km NNW of Kapowsin, Washington
  4. 2.0 3 km ESE of East Renton Highlands, Washington
  5. 1.8 3 km SW of Kapowsin, Washington
  6. 1.6 1 km NNE of Maple Valley, Washington
  7. 1.7 2 km NNW of Enetai, Washington
  8. 1.9 6 km SSE of Lea Hill, Washington
  9. 1.7 9 km SE of Enumclaw, Washington
  10. 1.5 5 km WSW of Mercer Island, Washington
  11. 1.5 0 km NNW of Eatonville, Washington
  12. 1.7 1 km SW of Kapowsin, Washington
  13. 1.6 3 km ESE of Buckley, Washington
  14. 2.2 2 km WSW of Wauna, Washington
  15. 1.5 5 km ENE of Belfair, 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.