QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

1 km NNW of River Road, Washington

· 9.0 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Island County 36 kmJefferson County 42 kmSan Juan County 47 kmClallam County 56 kmKitsap County 61 kmMason County 81 kmSnohomish County 102 kmSkagit County 108 kmKing County 118 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
9.0 km below the surface
Felt
no reports yet
Nearest
Island County, 36 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 629 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 5.7 970,000× the energy of this one
  3. Around the size people start to feel M 3.0 86× 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 48.0822, -123.1387. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Island County, WA 36 km (22 mi) WSW of here earthquakes near Island County
Jefferson County, WA 42 km (26 mi) NE of here earthquakes near Jefferson County
San Juan County, WA 47 km (29 mi) S of here earthquakes near San Juan County
Clallam County, WA 56 km (35 mi) E of here earthquakes near Clallam County
Kitsap County, WA 61 km (38 mi) NW of here earthquakes near Kitsap County
Mason County, WA 81 km (51 mi) N of here earthquakes near Mason County

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

Aftershocks so far

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

  1. 1.6 5 km N of Port Townsend, Washington
  2. 1.8 6 km WSW of Port Hadlock-Irondale, Washington
  3. 1.7 7 km WSW of Quilcene, Washington
  4. 1.8 4 km SSW of Port Ludlow, Washington
  5. 1.6 7 km ESE of Quilcene, Washington
  6. 2.8 10 km WSW of Friday Harbor, Washington
  7. 2.0 9 km W of Coupeville, Washington
  8. 1.8 4 km NNW of Port Townsend, Washington
  9. 1.6 4 km SW of Port Ludlow, Washington
  10. 1.5 11 km WNW of Ault Field, Washington
  11. 1.6 1 km SE of Six Mile, Canada
  12. 2.0 1 km SE of Coupeville, Washington
  13. 1.6 6 km SSW of Port Ludlow, Washington
  14. 2.0 6 km WNW of Lofall, Washington
  15. 1.7 5 km SW of Port Ludlow, 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.