QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

0 km N of Woodway, Washington

· 27 km deep · released about 200 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kitsap County 27 kmIsland County 45 kmKing County 54 kmSnohomish County 54 kmMason County 78 kmPierce County 85 kmJefferson County 86 kmSkagit County 88 kmSan Juan County 95 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 2.5 (ml)
Depth
27 km below the surface
Felt
5 reports · strongest reported intensity III
Nearest
Kitsap County, 27 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2659 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 5 people have reported feeling it to USGS.

How big was it?

This earthquake released about 200 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 75,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 53,000× the energy of this one
  3. Around the size people start to feel M 3.0 4.7× the energy of this one
  4. This earthquake M 2.5 about 200 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 47.8017, -122.3822. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kitsap County, WA 27 km (17 mi) NE of here earthquakes near Kitsap County
Island County, WA 45 km (28 mi) SSE of here earthquakes near Island County
King County, WA 54 km (33 mi) NW of here earthquakes near King County
Snohomish County, WA 54 km (34 mi) WSW of here earthquakes near Snohomish County
Mason County, WA 78 km (48 mi) NE of here earthquakes near Mason County
Pierce County, WA 85 km (53 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

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

  1. 1.5 5 km SSW of Gorst, Washington
  2. 1.7 1 km NE of Granite Falls, Washington
  3. 2.2 2 km ESE of Duvall, Washington
  4. 1.6 8 km NNW of Bangor Trident Base, Washington
  5. 1.8 3 km NE of Mirrormont, Washington
  6. 2.0 3 km E of Granite Falls, Washington
  7. 1.8 4 km N of Duvall, Washington
  8. 1.8 5 km NNE of Duvall, Washington
  9. 1.7 3 km ENE of Enetai, Washington
  10. 2.4 6 km S of Quilcene, Washington
  11. 1.6 3 km E of Cathcart, Washington
  12. 1.5 3 km ENE of Enetai, Washington
  13. 1.6 1 km SW of Keyport, Washington
  14. 2.1 3 km ENE of Granite Falls, Washington
  15. 1.5 2 km N of Boulevard Park, 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.