QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

11 km E of Tanner, Washington

· 14 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N King County 18 kmPierce County 62 kmSnohomish County 68 kmKittitas County 78 kmKitsap County 82 kmChelan County 86 kmThurston County 110 kmIsland County 112 kmLewis County 114 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
14 km below the surface
Felt
no reports yet
Nearest
King County, 18 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1145 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 11 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 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 89× the energy of this one
  4. This earthquake M 1.7 about 11 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 47.4573, -121.5928. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
King County, WA 18 km (11 mi) ESE of here earthquakes near King County
Pierce County, WA 62 km (38 mi) NE of here earthquakes near Pierce County
Snohomish County, WA 68 km (42 mi) S of here earthquakes near Snohomish County
Kittitas County, WA 78 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 86 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

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

  1. 1.6 3 km SSE of Issaquah, Washington
  2. 1.6 3 km SSE of Issaquah, Washington
  3. 2.1 3 km SSE of Issaquah, Washington
  4. 1.6 3 km SSE of Issaquah, Washington
  5. 1.7 6 km NNE of Lake Marcel-Stillwater, Washington
  6. 1.5 3 km SSE of Issaquah, Washington
  7. 1.6 12 km ESE of Enumclaw, Washington
  8. 2.6 7 km NE of Fall City, Washington
  9. 1.9 5 km E of Enumclaw, Washington
  10. 1.6 10 km NNE of Snoqualmie, Washington
  11. 2.5 10 km NE of Snoqualmie, Washington
  12. 1.9 11 km NE of Snoqualmie, Washington
  13. 1.5 5 km WSW of Black Diamond, Washington
  14. 1.5 2 km ESE of Buckley, Washington
  15. 1.9 3 km SSE of Woods Creek, 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.