QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

3 km SE of Duvall, Washington

· 7.3 km deep · released about 9.3 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N King County 27 kmSnohomish County 40 kmKitsap County 53 kmIsland County 73 kmPierce County 76 kmSkagit County 87 kmChelan County 101 kmMason County 101 kmThurston County 110 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 1.7 (ml)
Depth
7.3 km below the surface
Felt
no reports yet
Nearest
King County, 27 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3102 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 9.3 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 100× the energy of this one
  4. This earthquake M 1.7 about 9.3 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 47.7192, -121.9483. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
King County, WA 27 km (17 mi) NNW of here earthquakes near King County
Snohomish County, WA 40 km (25 mi) SSW of here earthquakes near Snohomish County
Kitsap County, WA 53 km (33 mi) E of here earthquakes near Kitsap County
Island County, WA 73 km (45 mi) SE of here earthquakes near Island County
Pierce County, WA 76 km (47 mi) NNE of here earthquakes near Pierce County
Skagit County, WA 87 km (54 mi) S of here earthquakes near Skagit County

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

Aftershocks so far

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

  1. 1.8 2 km S of Lake Roesiger, Washington
  2. 2.0 4 km SSW of Roosevelt, Washington
  3. 1.7 8 km SSW of Wilderness Rim, Washington
  4. 2.6 8 km SSW of Wilderness Rim, Washington
  5. 1.8 4 km ENE of Granite Falls, Washington
  6. 2.0 10 km ENE of Fall City, Washington
  7. 1.8 2 km S of Lake Roesiger, Washington
  8. 2.0 1 km NNE of Silver Firs, Washington
  9. 1.5 0 km NNE of Lake Marcel-Stillwater, Washington
  10. 1.6 Washington
  11. 2.1 5 km SW of Clinton, Washington
  12. 2.2 5 km ENE of Lake Roesiger, Washington
  13. 2.2 0 km S of Union Hill-Novelty Hill, Washington
  14. 1.9 3 km ENE of Granite Falls, Washington
  15. 1.7 1 km WSW of Mountlake Terrace, 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.