QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

2 km SW of Wilderness Rim, Washington

· 20 km deep · released about 480 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N King County 7 kmPierce County 51 kmKitsap County 68 kmSnohomish County 69 kmKittitas County 91 kmThurston County 96 kmChelan County 100 kmIsland 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 2.8 (ml)
Depth
20 km below the surface
Felt
8 reports · strongest reported intensity IV
Nearest
King County, 7 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1183 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 8 people have reported feeling it to USGS.

How big was it?

This earthquake released about 480 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 32,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 22,000× the energy of this one
  3. Around the size people start to feel M 3.0 2× the energy of this one
  4. This earthquake M 2.8 about 480 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 47.4357, -121.7908. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
King County, WA 7 km (4 mi) SSE of here earthquakes near King County
Pierce County, WA 51 km (32 mi) NNE of here earthquakes near Pierce County
Kitsap County, WA 68 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 91 km (56 mi) WNW of here earthquakes near Kittitas County
Thurston County, WA 96 km (60 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

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

  1. 1.5 1 km SW of Duvall, Washington
  2. 2.1 3 km NNE of White Center, Washington
  3. 1.8 3 km WSW of Wilderness Rim, Washington
  4. 2.7 1 km NW of Redmond, Washington
  5. 1.9 0 km E of East Renton Highlands, Washington
  6. 1.8 1 km WNW of Mirrormont, Washington
  7. 2.5 9 km NNE of Snoqualmie, Washington
  8. 3.1 7 km WSW of Snoqualmie, Washington
  9. 1.6 5 km S of Wilderness Rim, Washington
  10. 1.6 2 km WNW of Mirrormont, Washington
  11. 1.6 12 km ESE of Enumclaw, Washington
  12. 3.4 13 km E of Lake Marcel-Stillwater, Washington
  13. 1.9 7 km NE of Fall City, Washington
  14. 1.6 2 km SSW of Mirrormont, Washington
  15. 1.7 1 km E of White Center, 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.