QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

0 km SSE of Wilderness Rim, Washington

· 23 km deep · released about 5.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N King County 7 kmPierce County 53 kmSnohomish County 68 kmKitsap County 70 kmKittitas County 90 kmChelan County 98 kmThurston County 98 kmIsland County 104 kmMason County 106 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
23 km below the surface
Felt
no reports yet
Nearest
King County, 7 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 565 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 5.6 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 2,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.6 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 47.4442, -121.7665. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
King County, WA 7 km (4 mi) SE of here earthquakes near King County
Pierce County, WA 53 km (33 mi) NNE of here earthquakes near Pierce County
Snohomish County, WA 68 km (42 mi) S of here earthquakes near Snohomish County
Kitsap County, WA 70 km (43 mi) ESE of here earthquakes near Kitsap County
Kittitas County, WA 90 km (56 mi) WNW of here earthquakes near Kittitas County
Chelan County, WA 98 km (61 mi) WSW of here earthquakes near Chelan County

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

Aftershocks so far

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

  1. 2.0 7 km ENE of Fall City, Washington
  2. 1.5 10 km WSW of Easton, Washington
  3. 1.7 3 km N of West Lake Sammamish, Washington
  4. 1.6 2 km W of City of Sammamish, Washington
  5. 1.6 1 km NE of Mirrormont, Washington
  6. 1.9 5 km SSE of Seattle, Washington
  7. 1.9 10 km NE of Lake Marcel-Stillwater, Washington
  8. 2.1 3 km ENE of East Renton Highlands, Washington
  9. 1.6 2 km NNE of Lea Hill, Washington
  10. 2.4 8 km SSW of Sultan, Washington
  11. 1.6 11 km NE of Snoqualmie, Washington
  12. 1.5 2 km NW of Carbonado, Washington
  13. 2.4 3 km E of Carbonado, Washington
  14. 2.6 11 km NE of Snoqualmie, Washington
  15. 1.7 8 km NE of Fall City, 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.