QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

12 km NNW of Quilcene, Washington

· 22 km deep · released about 10 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Island County 31 kmKitsap County 38 kmJefferson County 47 kmSan Juan County 66 kmMason County 67 kmClallam County 75 kmSnohomish County 87 kmKing County 95 kmSkagit County 103 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
Island County, 31 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1674 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 10 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 1,500,000× 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 95× the energy of this one
  4. This earthquake M 1.7 about 10 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 47.9285, -122.9177. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Island County, WA 31 km (20 mi) SW of here earthquakes near Island County
Kitsap County, WA 38 km (24 mi) NNW of here earthquakes near Kitsap County
Jefferson County, WA 47 km (29 mi) ENE of here earthquakes near Jefferson County
San Juan County, WA 66 km (41 mi) SSE of here earthquakes near San Juan County
Mason County, WA 67 km (42 mi) NNE of here earthquakes near Mason County
Clallam County, WA 75 km (47 mi) ESE of here earthquakes near Clallam County

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

Aftershocks so far

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

  1. 1.8 0 km N of Enetai, Washington
  2. 2.1 3 km SSE of Quilcene, Washington
  3. 1.7 2 km ESE of Enetai, Washington
  4. 1.7 4 km SE of Quilcene, Washington
  5. 1.5 4 km SW of Port Ludlow, Washington
  6. 1.6 4 km ESE of Quilcene, Washington
  7. 2.0 3 km WNW of Gorst, Washington
  8. 1.7 5 km SSE of Quilcene, Washington
  9. 1.5 6 km WSW of Port Ludlow, Washington
  10. 1.7 Puget Sound region, Washington
  11. 1.7 4 km SSW of Port Ludlow, Washington
  12. 1.5 2 km SW of Gorst, Washington
  13. 1.9 1 km ENE of Enetai, Washington
  14. 1.6 1 km NNW of Keyport, Washington
  15. 1.9 0 km W of Keyport, 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.