QuakeIndex

explosion · reviewed by a seismologist

M 1.6ml

2 km N of McCleary, Washington

· -0.2 km deep · released about 6.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mason County 31 kmThurston County 36 kmGrays Harbor County 43 kmPacific County 70 kmKitsap County 77 kmJefferson County 83 kmPierce County 84 kmLewis County 87 kmWahkiakum County 88 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 1.6 (ml)
Depth
-0.2 km below the surface
Felt
no reports yet
Nearest
Mason County, 31 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 545 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

USGS catalogues this as explosion, not an earthquake.

How big was it?

This earthquake released about 6.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.6 about 6.4 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 47.0793, -123.2605. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mason County, WA 31 km (19 mi) SSW of here earthquakes near Mason County
Thurston County, WA 36 km (23 mi) WNW of here earthquakes near Thurston County
Grays Harbor County, WA 43 km (27 mi) E of here earthquakes near Grays Harbor County
Pacific County, WA 70 km (44 mi) NE of here earthquakes near Pacific County
Kitsap County, WA 77 km (48 mi) SW of here earthquakes near Kitsap County
Jefferson County, WA 83 km (52 mi) SSE of here earthquakes near Jefferson County

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

Aftershocks so far

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

  1. 1.0 6 km SE of McCleary, Washington
  2. 0.4 11 km NE of Hoodsport, Washington
  3. 0.7 9 km SSE of Shelton, Washington
  4. 1.6 6 km NE of Rochester, Washington
  5. 1.7 1 km E of Oakville, Washington
  6. 1.7 10 km NE of Hoodsport, Washington
  7. 1.9 10 km NE of Hoodsport, Washington
  8. 1.5 9 km NE of Hoodsport, Washington
  9. 1.5 9 km NE of Hoodsport, Washington
  10. 1.6 5 km W of Tumwater, Washington
  11. 1.7 14 km S of Cosmopolis, Washington
  12. 1.6 3 km S of Grapeview, Washington
  13. 1.8 7 km NNW of Pe Ell, Washington
  14. 1.6 11 km S of Shelton, Washington
  15. 1.6 4 km SSW of Shelton, 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 6,500 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.