QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

1 km SW of Enetai, Washington

· 25 km deep · released about 14 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kitsap County 8 kmMason County 49 kmKing County 59 kmIsland County 65 kmPierce County 68 kmThurston County 73 kmJefferson County 73 kmSnohomish County 82 kmGrays Harbor 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 1.8 (ml)
Depth
25 km below the surface
Felt
no reports yet
Nearest
Kitsap County, 8 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2054 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 14 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 760,000× the energy of this one
  3. Around the size people start to feel M 3.0 68× the energy of this one
  4. This earthquake M 1.8 about 14 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 47.5770, -122.6087. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kitsap County, WA 8 km (5 mi) SSE of here earthquakes near Kitsap County
Mason County, WA 49 km (31 mi) ENE of here earthquakes near Mason County
King County, WA 59 km (37 mi) W of here earthquakes near King County
Island County, WA 65 km (40 mi) S of here earthquakes near Island County
Pierce County, WA 68 km (42 mi) NNW of here earthquakes near Pierce County
Thurston County, WA 73 km (46 mi) NNE of here earthquakes near Thurston County

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

Aftershocks so far

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

  1. 1.7 0 km NNE of Navy Yard City, Washington
  2. 1.9 4 km NE of Home, Washington
  3. 1.9 2 km NE of Keyport, Washington
  4. 1.6 1 km S of Enetai, Washington
  5. 2.1 0 km S of Skokomish, Washington
  6. 1.8 5 km SSW of Port Ludlow, Washington
  7. 2.0 3 km WSW of Home, Washington
  8. 1.5 1 km SSW of Lynnwood, Washington
  9. 1.7 2 km ENE of Bainbridge Island, Washington
  10. 1.9 2 km NW of Indianola, Washington
  11. 1.6 3 km SSW of Bethel, Washington
  12. 1.8 4 km N of Belfair, Washington
  13. 1.8 5 km SSW of Port Ludlow, Washington
  14. 1.7 1 km ESE of Enetai, Washington
  15. 1.5 1 km ENE of Bainbridge Island, 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 4.1 on 2017-02-23 — it released about 2,900 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.