QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

4 km NE of Home, Washington

· 30 km deep · released about 19 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mason County 34 kmKitsap County 38 kmThurston County 42 kmPierce County 51 kmKing County 70 kmJefferson County 82 kmLewis County 84 kmGrays Harbor County 86 kmIsland 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 1.9 (ml)
Depth
30 km below the surface
Felt
no reports yet
Nearest
Mason County, 34 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1769 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 19 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 5.8 810,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 580,000× the energy of this one
  3. Around the size people start to feel M 3.0 51× the energy of this one
  4. This earthquake M 1.9 about 19 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 47.3018, -122.7225. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mason County, WA 34 km (21 mi) E of here earthquakes near Mason County
Kitsap County, WA 38 km (24 mi) S of here earthquakes near Kitsap County
Thurston County, WA 42 km (26 mi) NNE of here earthquakes near Thurston County
Pierce County, WA 51 km (32 mi) WNW of here earthquakes near Pierce County
King County, WA 70 km (44 mi) WSW of here earthquakes near King County
Jefferson County, WA 82 km (51 mi) SE of here earthquakes near Jefferson 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. 1.7 2 km ESE of Enetai, Washington
  2. 1.9 1 km NNW of Des Moines, Washington
  3. 2.0 Puget Sound region, Washington
  4. 2.4 0 km NW of Des Moines, Washington
  5. 1.7 2 km SSW of Burien, Washington
  6. 2.0 3 km WNW of Gorst, Washington
  7. 1.9 1 km WNW of Bonney Lake, Washington
  8. 1.6 11 km S of Shelton, Washington
  9. 1.5 Puget Sound region, Washington
  10. 1.7 Puget Sound region, Washington
  11. 2.2 7 km WSW of Seattle, Washington
  12. 1.9 3 km NNE of White Center, Washington
  13. 1.6 5 km W of Burley, Washington
  14. 1.5 2 km SW of Gorst, Washington
  15. 1.9 1 km ENE of Enetai, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.1 on 2017-02-23 — it released about 2,200 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.