QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

3 km E of Indianola, Washington

· 22 km deep · released about 20 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kitsap County 17 kmIsland County 48 kmKing County 56 kmSnohomish County 63 kmMason County 68 kmJefferson County 79 kmPierce County 81 kmThurston County 94 kmSkagit 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 1.9 (ml)
Depth
22 km below the surface
Felt
no reports yet
Nearest
Kitsap County, 17 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2904 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 20 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 760,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 540,000× the energy of this one
  3. Around the size people start to feel M 3.0 48× the energy of this one
  4. This earthquake M 1.9 about 20 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 47.7428, -122.4778. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kitsap County, WA 17 km (11 mi) NE of here earthquakes near Kitsap County
Island County, WA 48 km (30 mi) SSE of here earthquakes near Island County
King County, WA 56 km (35 mi) WNW of here earthquakes near King County
Snohomish County, WA 63 km (39 mi) WSW of here earthquakes near Snohomish County
Mason County, WA 68 km (42 mi) NE of here earthquakes near Mason County
Jefferson County, WA 79 km (49 mi) E of here earthquakes near Jefferson 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. 1.9 1 km N of Enetai, Washington
  2. 2.0 0 km ESE of Erlands Point-Kitsap Lake, Washington
  3. 1.8 1 km NNE of Burley, Washington
  4. 1.7 2 km NW of Indianola, Washington
  5. 2.2 7 km W of Clinton, Washington
  6. 1.7 2 km SSE of Manchester, Washington
  7. 1.5 8 km SSE of Coupeville, Washington
  8. 1.7 6 km SSE of Port Ludlow, Washington
  9. 2.5 0 km N of Woodway, Washington
  10. 1.7 2 km SE of Manchester, Washington
  11. 1.6 9 km NNE of Quilcene, Washington
  12. 1.7 5 km SW of Hansville, Washington
  13. 1.5 2 km NNW of Indianola, Washington
  14. 2.3 0 km ESE of Riverton, Washington
  15. 1.6 4 km WSW of Monroe, 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.