QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

3 km WSW of Wilderness Rim, Washington

· 19 km deep · released about 5.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N King County 7 kmPierce County 50 kmKitsap County 67 kmSnohomish County 69 kmKittitas County 92 kmThurston County 95 kmChelan County 101 kmMason County 103 kmIsland 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 1.5 (ml)
Depth
19 km below the surface
Felt
no reports yet
Nearest
King County, 7 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2169 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 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 47.4320, -121.8105. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
King County, WA 7 km (4 mi) SSE of here earthquakes near King County
Pierce County, WA 50 km (31 mi) NNE of here earthquakes near Pierce County
Kitsap County, WA 67 km (42 mi) ESE of here earthquakes near Kitsap County
Snohomish County, WA 69 km (43 mi) S of here earthquakes near Snohomish County
Kittitas County, WA 92 km (57 mi) WNW of here earthquakes near Kittitas County
Thurston County, WA 95 km (59 mi) NE of here earthquakes near Thurston County

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

Aftershocks so far

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

  1. 2.3 0 km SSW of Boulevard Park, Washington
  2. 2.2 1 km NNE of Carnation, Washington
  3. 1.8 12 km W of Greenwater, Washington
  4. 1.5 1 km N of Boulevard Park, Washington
  5. 1.9 2 km SE of Ravensdale, Washington
  6. 1.7 1 km WNW of Bonney Lake, Washington
  7. 1.6 0 km N of Boulevard Park, Washington
  8. 2.8 0 km S of Boulevard Park, Washington
  9. 2.1 0 km SSW of Boulevard Park, Washington
  10. 2.2 2 km SSE of Carnation, Washington
  11. 1.6 0 km WSW of Boulevard Park, Washington
  12. 1.9 13 km S of May Creek, Washington
  13. 1.6 0 km NW of Boulevard Park, Washington
  14. 1.5 1 km SSW of Carnation, Washington
  15. 1.5 13 km W of Greenwater, 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.