QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

22 km WSW of Quilcene, Washington

· 39 km deep · released about 9.3 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Jefferson County 27 kmKitsap County 42 kmMason County 48 kmIsland County 56 kmClallam County 65 kmSan Juan County 81 kmGrays Harbor County 89 kmThurston County 97 kmKing County 105 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
39 km below the surface
Felt
no reports yet
Nearest
Jefferson County, 27 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 850 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 9.3 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 1,600,000× 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 3.0 100× the energy of this one
  4. This earthquake M 1.7 about 9.3 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 47.7795, -123.1667. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Jefferson County, WA 27 km (17 mi) E of here earthquakes near Jefferson County
Kitsap County, WA 42 km (26 mi) WNW of here earthquakes near Kitsap County
Mason County, WA 48 km (30 mi) N of here earthquakes near Mason County
Island County, WA 56 km (35 mi) SW of here earthquakes near Island County
Clallam County, WA 65 km (41 mi) SE of here earthquakes near Clallam County
San Juan County, WA 81 km (50 mi) S of here earthquakes near San Juan County

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

Aftershocks so far

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

  1. 1.7 6 km SE of Port Ludlow, Washington
  2. 2.2 25 km W of Brinnon, Washington
  3. 2.8 16 km SSW of River Road, Washington
  4. 2.9 0 km NW of Keyport, Washington
  5. 1.6 5 km SE of Port Ludlow, Washington
  6. 1.5 3 km S of Port Ludlow, Washington
  7. 2.5 10 km SW of Seabeck, Washington
  8. 2.0 3 km SSE of Port Ludlow, Washington
  9. 1.5 6 km ESE of Quilcene, Washington
  10. 1.9 5 km NNE of Port Angeles, Washington
  11. 1.9 3 km SE of Gorst, Washington
  12. 1.8 9 km SSW of Seabeck, Washington
  13. 1.5 2 km SSE of Gorst, Washington
  14. 2.8 25 km WNW of Hoodsport, Washington
  15. 2.1 7 km NW of Jamestown, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.3 on 2023-10-09 — it released about 9,400 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.