QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

29 km WNW of Hoodsport, Washington

· 42 km deep · released about 14 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mason County 31 kmJefferson County 31 kmGrays Harbor County 53 kmKitsap County 64 kmClallam County 71 kmThurston County 82 kmIsland County 93 kmPacific County 111 kmSan Juan 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 1.8 (ml)
Depth
42 km below the surface
Felt
1 report
Nearest
Mason County, 31 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 725 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 14 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 760,000× the energy of this one
  3. Around the size people start to feel M 3.0 68× the energy of this one
  4. This earthquake M 1.8 about 14 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 47.5292, -123.4827. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mason County, WA 31 km (19 mi) NW of here earthquakes near Mason County
Jefferson County, WA 31 km (19 mi) S of here earthquakes near Jefferson County
Grays Harbor County, WA 53 km (33 mi) NNE of here earthquakes near Grays Harbor County
Kitsap County, WA 64 km (40 mi) W of here earthquakes near Kitsap County
Clallam County, WA 71 km (44 mi) SSE of here earthquakes near Clallam County
Thurston County, WA 82 km (51 mi) NW of here earthquakes near Thurston County

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

Aftershocks so far

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

  1. 1.5 9 km NE of Hoodsport, Washington
  2. 1.5 9 km NE of Hoodsport, Washington
  3. 1.8 21 km S of Port Angeles East, Washington
  4. 2.4 40 km NE of Amanda Park, Washington
  5. 1.6 4 km SSW of Shelton, Washington
  6. 2.0 35 km NE of Amanda Park, Washington
  7. 1.5 11 km N of Hoodsport, Washington
  8. 1.7 11 km NW of Belfair, Washington
  9. 2.2 12 km ENE of Humptulips, Washington
  10. 1.6 16 km WNW of Skokomish, Washington
  11. 1.9 14 km WNW of Belfair, Washington
  12. 1.6 5 km S of Shelton, Washington
  13. 1.5 2 km ESE of Humptulips, Washington
  14. 1.6 9 km NE of Humptulips, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.1 on 2017-02-23 — it released about 2,900 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.