QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

12 km S of Brady, Washington

· 41 km deep · released about 44 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grays Harbor County 36 kmPacific County 42 kmThurston County 51 kmMason County 58 kmWahkiakum County 66 kmLewis County 92 kmClatsop County 97 kmCowlitz County 99 kmJefferson County 103 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
41 km below the surface
Felt
no reports yet
Nearest
Grays Harbor County, 36 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 654 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 44 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 5.8 340,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 240,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. This earthquake M 2.1 about 44 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 46.8828, -123.4978. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grays Harbor County, WA 36 km (22 mi) SE of here earthquakes near Grays Harbor County
Pacific County, WA 42 km (26 mi) NNE of here earthquakes near Pacific County
Thurston County, WA 51 km (32 mi) W of here earthquakes near Thurston County
Mason County, WA 58 km (36 mi) SSW of here earthquakes near Mason County
Wahkiakum County, WA 66 km (41 mi) N of here earthquakes near Wahkiakum County
Lewis County, WA 92 km (57 mi) WNW of here earthquakes near Lewis County

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

Aftershocks so far

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

  1. 1.8 7 km NNW of Pe Ell, Washington
  2. 1.6 11 km S of Shelton, Washington
  3. 1.6 4 km SSW of Shelton, Washington
  4. 1.5 10 km NNE of Tokeland, Washington
  5. 1.5 11 km S of Shelton, Washington
  6. 1.7 8 km SSW of Shelton, Washington
  7. 2.4 10 km ESE of Pe Ell, Washington
  8. 2.1 8 km W of Napavine, Washington
  9. 1.8 3 km WSW of South Bend, Washington
  10. 1.8 3 km S of Willapa, Washington
  11. 2.6 5 km WSW of Pe Ell, Washington
  12. 1.6 5 km S of Shelton, Washington
  13. 1.5 2 km ESE of Humptulips, Washington
  14. 1.7 2 km N of Oakville, Washington
  15. 1.6 19 km E of Humptulips, 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.