QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

2 km E of Tracyton, Washington

· 25 km deep · released about 10 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kitsap County 4 kmMason County 50 kmKing County 61 kmIsland County 62 kmJefferson County 71 kmPierce County 71 kmThurston County 76 kmSnohomish County 81 kmGrays Harbor County 106 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
25 km below the surface
Felt
no reports yet
Nearest
Kitsap County, 4 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 633 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 1,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 92× 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 47.6055, -122.6252. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kitsap County, WA 4 km (3 mi) SSE of here earthquakes near Kitsap County
Mason County, WA 50 km (31 mi) NE of here earthquakes near Mason County
King County, WA 61 km (38 mi) WNW of here earthquakes near King County
Island County, WA 62 km (38 mi) S of here earthquakes near Island County
Jefferson County, WA 71 km (44 mi) ESE of here earthquakes near Jefferson County
Pierce County, WA 71 km (44 mi) NNW of here earthquakes near Pierce County

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

Aftershocks so far

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

  1. 1.7 10 km NW of Belfair, Washington
  2. 1.6 2 km W of Belfair, Washington
  3. 1.6 8 km SSW of Grapeview, Washington
  4. 1.9 4 km WSW of Shoreline, Washington
  5. 1.9 1 km NNE of Suquamish, Washington
  6. 1.5 5 km NNE of Dash Point, Washington
  7. 2.1 4 km NE of Vashon, Washington
  8. 1.7 6 km SE of Port Ludlow, Washington
  9. 1.8 5 km WNW of Bainbridge Island, Washington
  10. 2.9 0 km NW of Keyport, Washington
  11. 1.6 3 km WSW of Sammamish, Washington
  12. 1.6 5 km SE of Port Ludlow, Washington
  13. 1.5 3 km S of Port Ludlow, Washington
  14. 1.7 7 km ENE of Manchester, Washington
  15. 2.1 2 km ENE of Home, 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 8,500 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.