QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

6 km SE of Port Ludlow, Washington

· 22 km deep · released about 72 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kitsap County 27 kmIsland County 31 kmSnohomish County 67 kmJefferson County 68 kmMason County 72 kmKing County 74 kmSan Juan County 78 kmSkagit County 91 kmClallam County 97 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 2.3 (ml)
Depth
22 km below the surface
Felt
no reports yet
Nearest
Kitsap County, 27 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1228 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 72 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 210,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 150,000× the energy of this one
  3. Around the size people start to feel M 3.0 13× the energy of this one
  4. This earthquake M 2.3 about 72 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 47.8807, -122.6285. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kitsap County, WA 27 km (17 mi) N of here earthquakes near Kitsap County
Island County, WA 31 km (19 mi) S of here earthquakes near Island County
Snohomish County, WA 67 km (42 mi) WSW of here earthquakes near Snohomish County
Jefferson County, WA 68 km (42 mi) E of here earthquakes near Jefferson County
Mason County, WA 72 km (45 mi) NE of here earthquakes near Mason County
King County, WA 74 km (46 mi) NW of here earthquakes near King County

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

Aftershocks so far

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

  1. 1.5 11 km N of Quilcene, Washington
  2. 2.2 3 km NE of Belfair, Washington
  3. 1.8 5 km SE of Quilcene, Washington
  4. 1.7 3 km NNW of Suquamish, Washington
  5. 1.5 5 km W of Coupeville, Washington
  6. 1.8 4 km SSW of Port Ludlow, Washington
  7. 1.8 2 km N of Keyport, Washington
  8. 3.4 17 km WSW of Brinnon, Washington
  9. 1.6 10 km WNW of Belfair, Washington
  10. 1.7 1 km E of White Center, Washington
  11. 1.7 5 km SSW of Port Ludlow, Washington
  12. 3.3 1 km NNE of Coupeville, Washington
  13. 3.5 7 km SSW of River Road, Washington
  14. 1.7 3 km N of West Lake Sammamish, Washington
  15. 1.9 5 km SSE of Seattle, 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.