QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4ml

25 km ESE of Neilton, Washington

· 7.0 km deep · released about 120 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mason County 29 kmGrays Harbor County 33 kmJefferson County 51 kmThurston County 72 kmKitsap County 76 kmClallam County 89 kmPacific County 89 kmPierce County 111 kmIsland County 112 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 2.4 (ml)
Depth
7.0 km below the surface
Felt
no reports yet
Nearest
Mason County, 29 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1028 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 120 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 89,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.9× the energy of this one
  4. This earthquake M 2.4 about 120 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 47.3447, -123.5618. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mason County, WA 29 km (18 mi) W of here earthquakes near Mason County
Grays Harbor County, WA 33 km (20 mi) NE of here earthquakes near Grays Harbor County
Jefferson County, WA 51 km (32 mi) S of here earthquakes near Jefferson County
Thurston County, WA 72 km (45 mi) NW of here earthquakes near Thurston County
Kitsap County, WA 76 km (47 mi) WSW of here earthquakes near Kitsap County
Clallam County, WA 89 km (55 mi) SSE of here earthquakes near Clallam County

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

Aftershocks so far

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

  1. 1.6 9 km NE of Humptulips, Washington
  2. 1.6 19 km E of Humptulips, Washington
  3. 2.8 21 km NW of Hoodsport, Washington
  4. 1.5 12 km NNW of Amanda Park, Washington
  5. 1.5 11 km S of Shelton, Washington
  6. 1.6 15 km NNE of Amanda Park, Washington
  7. 1.6 7 km S of Shelton, Washington
  8. 1.9 8 km NW of Aberdeen Gardens, Washington
  9. 1.7 11 km S of Humptulips, Washington
  10. 2.0 9 km SSW of Humptulips, Washington
  11. 2.2 25 km W of Brinnon, Washington
  12. 2.0 8 km WSW of Neilton, Washington
  13. 1.5 16 km NNE of Amanda Park, Washington
  14. 1.6 3 km SSW of Shelton, Washington
  15. 1.6 15 km N of Satsop, 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 340 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.