QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4ml

11 km E of Tanner, Washington

· 15 km deep · released about 120 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N King County 18 kmPierce County 63 kmSnohomish County 67 kmKittitas County 79 kmKitsap County 82 kmChelan County 85 kmThurston County 111 kmIsland County 111 kmSkagit County 115 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 2.4 (ml)
Depth
15 km below the surface
Felt
24 reports · strongest reported intensity IV
Measured shaking
intensity III (ShakeMap)
Nearest
King County, 18 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1877 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 24 people have reported feeling it to USGS.

How big was it?

This earthquake released about 120 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 120,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 86,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.7× the energy of this one
  4. This earthquake M 2.4 about 120 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 47.4682, -121.5928. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
King County, WA 18 km (11 mi) E of here earthquakes near King County
Pierce County, WA 63 km (39 mi) NE of here earthquakes near Pierce County
Snohomish County, WA 67 km (41 mi) S of here earthquakes near Snohomish County
Kittitas County, WA 79 km (49 mi) WNW of here earthquakes near Kittitas County
Kitsap County, WA 82 km (51 mi) ESE of here earthquakes near Kitsap County
Chelan County, WA 85 km (53 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

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

  1. 2.7 4 km E of Lake Marcel-Stillwater, Washington
  2. 1.8 8 km SSW of Sultan, Washington
  3. 2.3 3 km WNW of Duvall, Washington
  4. 1.6 6 km ENE of Mirrormont, Washington
  5. 1.6 6 km W of Wilderness Rim, Washington
  6. 1.5 0 km SSE of Wilderness Rim, Washington
  7. 1.7 15 km SW of Easton, Washington
  8. 2.1 5 km SW of Black Diamond, Washington
  9. 1.6 6 km SW of Sultan, Washington
  10. 1.6 Washington
  11. 1.5 Washington
  12. 2.0 Washington
  13. 3.1 6 km SSE of Black Diamond, Washington
  14. 1.9 12 km ESE of Enumclaw, Washington
  15. 1.9 2 km E of Union Hill-Novelty Hill, 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.