QuakeIndex

explosion · reviewed by a seismologist

M 1.5ml

10 km ENE of McCleary, Washington

· -0.2 km deep · released about 5.9 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Thurston County 28 kmMason County 30 kmGrays Harbor County 53 kmKitsap County 72 kmPierce County 74 kmPacific County 77 kmLewis County 80 kmJefferson County 86 kmWahkiakum County 90 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 1.5 (ml)
Depth
-0.2 km below the surface
Felt
no reports yet
Nearest
Thurston County, 28 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2676 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 5.9 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 2,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,800,000× the energy of this one
  3. Around the size people start to feel M 3.0 160× the energy of this one
  4. This earthquake M 1.5 about 5.9 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 47.0818, -123.1292. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Thurston County, WA 28 km (17 mi) NW of here earthquakes near Thurston County
Mason County, WA 30 km (19 mi) S of here earthquakes near Mason County
Grays Harbor County, WA 53 km (33 mi) E of here earthquakes near Grays Harbor County
Kitsap County, WA 72 km (45 mi) SSW of here earthquakes near Kitsap County
Pierce County, WA 74 km (46 mi) W of here earthquakes near Pierce County
Pacific County, WA 77 km (48 mi) NE of here earthquakes near Pacific County

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

Aftershocks so far

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

  1. 1.5 2 km WNW of Gig Harbor, Washington
  2. 1.5 7 km ENE of Allyn, Washington
  3. 1.9 4 km NE of Home, Washington
  4. 2.1 0 km S of Skokomish, Washington
  5. 2.0 3 km WSW of Home, Washington
  6. 1.7 14 km ENE of Willapa, Washington
  7. 1.9 6 km WNW of Hoodsport, Washington
  8. 3.2 3 km W of Skokomish, Washington
  9. 2.0 4 km E of Home, Washington
  10. 3.8 3 km WSW of Skokomish, Washington
  11. 1.6 12 km S of Shelton, Washington
  12. 1.6 10 km S of Shelton, Washington
  13. 1.6 11 km S of Shelton, Washington
  14. 1.6 5 km WNW of DuPont, Washington
  15. 1.9 0 km N of Vaughn, 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 6,900 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.