QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

3 km NNE of East Renton Highlands, Washington

· 24 km deep · released about 17 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N King County 19 kmKitsap County 44 kmPierce County 52 kmSnohomish County 65 kmMason County 84 kmIsland County 84 kmThurston County 85 kmLewis County 106 kmSkagit County 111 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 1.8 (ml)
Depth
24 km below the surface
Felt
no reports yet
Nearest
King County, 19 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3441 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 17 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 900,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 640,000× the energy of this one
  3. Around the size people start to feel M 3.0 57× the energy of this one
  4. This earthquake M 1.8 about 17 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 47.5142, -122.0888. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
King County, WA 19 km (12 mi) W of here earthquakes near King County
Kitsap County, WA 44 km (28 mi) ESE of here earthquakes near Kitsap County
Pierce County, WA 52 km (32 mi) N of here earthquakes near Pierce County
Snohomish County, WA 65 km (40 mi) SSW of here earthquakes near Snohomish County
Mason County, WA 84 km (52 mi) ENE of here earthquakes near Mason County
Island County, WA 84 km (52 mi) SSE of here earthquakes near Island County

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

Aftershocks so far

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

  1. 1.9 1 km NE of Alderton, Washington
  2. 1.6 5 km N of Seattle, Washington
  3. 1.7 5 km SSE of Suquamish, Washington
  4. 1.9 2 km ENE of Enetai, Washington
  5. 1.9 1 km SSE of North Bend, Washington
  6. 2.0 0 km NNE of Enetai, Washington
  7. 1.9 10 km NE of Snoqualmie, Washington
  8. 1.8 3 km SE of Cathcart, Washington
  9. 1.8 Washington
  10. 1.6 0 km SW of Enetai, Washington
  11. 1.8 0 km WNW of Enetai, Washington
  12. 1.5 11 km W of Greenwater, Washington
  13. 1.8 1 km SE of Enetai, Washington
  14. 2.8 1 km ESE of Enetai, Washington
  15. 1.6 0 km SE of Enetai, 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.