QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2ml

7 km ESE of Maplewood, Washington

· 23 km deep · released about 1.1 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kitsap County 32 kmPierce County 44 kmKing County 49 kmMason County 53 kmThurston County 56 kmIsland County 88 kmLewis County 89 kmSnohomish County 92 kmJefferson County 92 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 3.2 (ml)
Depth
23 km below the surface
Felt
1291 reports · strongest reported intensity IV
Measured shaking
intensity III (ShakeMap)
Nearest
Kitsap County, 32 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 490 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1291 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1.1 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 160,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 7,200× the energy of this one
  3. Magna, Utah 2020 M 5.7 5,100× the energy of this one
  4. This earthquake M 3.2 about 1.1 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.2× more

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 47.3795, -122.4703. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kitsap County, WA 32 km (20 mi) SSE of here earthquakes near Kitsap County
Pierce County, WA 44 km (27 mi) NNW of here earthquakes near Pierce County
King County, WA 49 km (31 mi) WSW of here earthquakes near King County
Mason County, WA 53 km (33 mi) E of here earthquakes near Mason County
Thurston County, WA 56 km (35 mi) NNE of here earthquakes near Thurston County
Island County, WA 88 km (55 mi) S of here earthquakes near Island County

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

Aftershocks so far

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

  1. 1.7 0 km W of Beaux Arts Village, Washington
  2. 1.5 1 km WSW of Kapowsin, Washington
  3. 1.6 2 km NNE of Enetai, Washington
  4. 1.7 10 km NW of Belfair, Washington
  5. 1.6 2 km W of Belfair, Washington
  6. 1.6 8 km SSW of Grapeview, Washington
  7. 2.2 4 km ESE of Enumclaw, Washington
  8. 1.6 1 km SSE of Kapowsin, Washington
  9. 1.9 4 km WSW of Shoreline, Washington
  10. 1.9 1 km NNE of Suquamish, Washington
  11. 1.5 0 km SSW of Carbonado, Washington
  12. 1.9 1 km NNW of Maple Valley, Washington
  13. 1.6 5 km SE of Enumclaw, Washington
  14. 1.5 5 km NNE of Dash Point, Washington
  15. 2.1 4 km NE of Vashon, 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.