QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

4 km WSW of Wilderness Rim, Washington

· 20 km deep · released about 8.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N King County 6 kmPierce County 49 kmKitsap County 65 kmSnohomish County 69 kmThurston County 94 kmKittitas County 94 kmMason County 101 kmIsland County 102 kmChelan County 102 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
King County, 6 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 438 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 8.4 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 1,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,300,000× the energy of this one
  3. Around the size people start to feel M 3.0 110× the energy of this one
  4. This earthquake M 1.6 about 8.4 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 47.4355, -121.8315. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
King County, WA 6 km (4 mi) S of here earthquakes near King County
Pierce County, WA 49 km (31 mi) NNE of here earthquakes near Pierce County
Kitsap County, WA 65 km (41 mi) ESE of here earthquakes near Kitsap County
Snohomish County, WA 69 km (43 mi) S of here earthquakes near Snohomish County
Thurston County, WA 94 km (58 mi) NE of here earthquakes near Thurston County
Kittitas County, WA 94 km (58 mi) WNW of here earthquakes near Kittitas County

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

Aftershocks so far

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

  1. 1.5 10 km ESE of Enumclaw, Washington
  2. 2.1 7 km NE of Fall City, Washington
  3. 1.8 8 km NE of Fall City, Washington
  4. 1.7 1 km ENE of Clyde Hill, Washington
  5. 1.6 1 km ENE of Clyde Hill, Washington
  6. 1.9 5 km NE of Hobart, Washington
  7. 1.7 7 km NE of Fall City, Washington
  8. 1.6 8 km ENE of Duvall, Washington
  9. 1.6 4 km S of Monroe, Washington
  10. 1.6 0 km S of Lakeland South, Washington
  11. 1.6 3 km NE of Lake Marcel-Stillwater, Washington
  12. 2.0 1 km SE of Fairwood, Washington
  13. 1.7 3 km E of Mirrormont, Washington
  14. 1.7 5 km NE of Hobart, Washington
  15. 2.2 5 km E of Mirrormont, 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.