QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

1 km NNW of Sequim, Washington

· 45 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Island County 33 kmJefferson County 45 kmSan Juan County 46 kmClallam County 58 kmKitsap County 61 kmMason County 83 kmSnohomish County 100 kmSkagit County 106 kmKing County 117 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
45 km below the surface
Felt
no reports yet
Nearest
Island County, 33 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3263 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 1,300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 930,000× the energy of this one
  3. Around the size people start to feel M 3.0 83× 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 48.0937, -123.1105. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Island County, WA 33 km (21 mi) WSW of here earthquakes near Island County
Jefferson County, WA 45 km (28 mi) NE of here earthquakes near Jefferson County
San Juan County, WA 46 km (29 mi) S of here earthquakes near San Juan County
Clallam County, WA 58 km (36 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 83 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

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

  1. 1.8 12 km NNE of Port Angeles East, Washington
  2. 1.6 9 km NNE of Quilcene, Washington
  3. 1.7 5 km SW of Hansville, Washington
  4. 1.7 7 km N of Ault Field, Washington
  5. 1.6 11 km NW of Jamestown, Washington
  6. 1.7 8 km W of Ault Field, Washington
  7. 2.5 8 km SE of Friday Harbor, Washington
  8. 1.6 1 km NNE of Six Mile, Canada
  9. 1.8 7 km ESE of Quilcene, Washington
  10. 2.8 8 km WNW of Carlsborg, WA
  11. 2.2 6 km NNE of Oak Bay, Canada
  12. 1.7 6 km W of Lofall, Washington
  13. 1.9 3 km SSE of Port Ludlow, Washington
  14. 1.6 2 km N of Port Townsend, Washington
  15. 2.3 15 km SW of River Road, 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.