QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

2 km SSW of Burien, Washington

· 22 km deep · released about 12 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kitsap County 30 kmKing County 40 kmPierce County 47 kmMason County 62 kmThurston County 67 kmSnohomish County 81 kmIsland County 82 kmJefferson County 96 kmLewis County 97 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
22 km below the surface
Felt
no reports yet
Nearest
Kitsap County, 30 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1312 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 12 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 1,300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 900,000× the energy of this one
  3. Around the size people start to feel M 3.0 80× the energy of this one
  4. This earthquake M 1.7 about 12 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 47.4517, -122.3650. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kitsap County, WA 30 km (19 mi) SE of here earthquakes near Kitsap County
King County, WA 40 km (25 mi) W of here earthquakes near King County
Pierce County, WA 47 km (29 mi) NNW of here earthquakes near Pierce County
Mason County, WA 62 km (38 mi) E of here earthquakes near Mason County
Thurston County, WA 67 km (42 mi) NNE of here earthquakes near Thurston County
Snohomish County, WA 81 km (50 mi) SW of here earthquakes near Snohomish County

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

Aftershocks so far

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

  1. 1.5 2 km NNW of Federal Way, Washington
  2. 1.8 11 km ENE of Enumclaw, Washington
  3. 1.6 2 km SSE of Ames Lake, Washington
  4. 2.1 Puget Sound region, Washington
  5. 1.5 Puget Sound region, Washington
  6. 1.8 4 km S of Seabeck, Washington
  7. 1.7 Puget Sound region, Washington
  8. 1.6 7 km NE of Fall City, Washington
  9. 1.7 Puget Sound region, Washington
  10. 1.7 3 km NNW of Edmonds, Washington
  11. 1.6 4 km NW of Edmonds, Washington
  12. 2.3 0 km E of Esperance, Washington
  13. 2.4 9 km NW of Belfair, Washington
  14. 1.6 11 km ESE of Enumclaw, Washington
  15. 2.2 6 km WSW of Lofall, 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.