QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

8 km SSW of Wilderness Rim, Washington

· 19 km deep · released about 9.3 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N King County 13 kmPierce County 45 kmKitsap County 71 kmSnohomish County 76 kmKittitas County 89 kmThurston County 92 kmLewis County 99 kmChelan County 104 kmMason 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
19 km below the surface
Felt
no reports yet
Nearest
King County, 13 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2793 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 9.3 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 1,600,000× 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 3.0 100× the energy of this one
  4. This earthquake M 1.7 about 9.3 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 47.3725, -121.7945. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
King County, WA 13 km (8 mi) SSE of here earthquakes near King County
Pierce County, WA 45 km (28 mi) NE of here earthquakes near Pierce County
Kitsap County, WA 71 km (44 mi) ESE of here earthquakes near Kitsap County
Snohomish County, WA 76 km (47 mi) S of here earthquakes near Snohomish County
Kittitas County, WA 89 km (55 mi) WNW of here earthquakes near Kittitas County
Thurston County, WA 92 km (57 mi) ENE of here earthquakes near Thurston County

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

Aftershocks so far

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

  1. 1.9 12 km W of Greenwater, Washington
  2. 1.5 14 km S of Skykomish, Washington
  3. 1.7 2 km NNW of Algona, Washington
  4. 1.9 2 km NNW of Algona, Washington
  5. 2.7 5 km NE of Fall City, Washington
  6. 1.9 12 km ENE of Enumclaw, Washington
  7. 1.6 5 km NE of Fall City, Washington
  8. 2.3 6 km NE of Fall City, Washington
  9. 1.6 5 km NE of Fall City, Washington
  10. 2.5 6 km NE of Fall City, Washington
  11. 1.7 6 km NE of Fall City, Washington
  12. 3.0 8 km ENE of Fall City, Washington
  13. 1.7 6 km NE of Fall City, Washington
  14. 3.4 9 km NNE of Snoqualmie, Washington
  15. 1.7 2 km N of Lakeland South, 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.