QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

5 km ESE of Indianola, Washington

· 27 km deep · released about 41 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kitsap County 17 kmIsland County 51 kmKing County 53 kmSnohomish County 63 kmMason County 68 kmPierce County 78 kmJefferson County 81 kmThurston County 92 kmSkagit County 98 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 2.1 (ml)
Depth
27 km below the surface
Felt
no reports yet
Nearest
Kitsap County, 17 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3214 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 41 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 370,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 260,000× the energy of this one
  3. Around the size people start to feel M 3.0 23× the energy of this one
  4. This earthquake M 2.1 about 41 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 47.7222, -122.4562. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kitsap County, WA 17 km (11 mi) ENE of here earthquakes near Kitsap County
Island County, WA 51 km (32 mi) SSE of here earthquakes near Island County
King County, WA 53 km (33 mi) WNW of here earthquakes near King County
Snohomish County, WA 63 km (39 mi) SW of here earthquakes near Snohomish County
Mason County, WA 68 km (42 mi) NE of here earthquakes near Mason County
Pierce County, WA 78 km (48 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

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

  1. 2.7 1 km NNW of Mountlake Terrace, Washington
  2. 1.5 4 km NE of Marrowstone, Washington
  3. 2.7 2 km NNE of Gorst, Washington
  4. 1.6 4 km SSW of Port Ludlow, Washington
  5. 2.2 5 km S of Seabeck, Washington
  6. 1.9 6 km WSW of Chico, Washington
  7. 1.5 10 km N of Quilcene, Washington
  8. 1.7 1 km SSE of Mukilteo, Washington
  9. 1.6 2 km N of Seattle, Washington
  10. 1.5 7 km ENE of Allyn, Washington
  11. 1.6 1 km W of Enetai, Washington
  12. 1.7 3 km W of Redmond, Washington
  13. 1.6 3 km W of Redmond, Washington
  14. 1.7 3 km SE of Duvall, Washington
  15. 1.7 6 km W of Burley, 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.