QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

15 km N of Satsop, Washington

· 39 km deep · released about 8.1 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grays Harbor County 26 kmMason County 33 kmThurston County 55 kmPacific County 69 kmJefferson County 73 kmKitsap County 84 kmWahkiakum County 95 kmPierce County 102 kmLewis County 105 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
39 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Grays Harbor County, 26 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 481 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 8.1 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,900,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,300,000× the energy of this one
  3. Around the size people start to feel M 3.0 120× the energy of this one
  4. This earthquake M 1.6 about 8.1 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 47.1467, -123.4900. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grays Harbor County, WA 26 km (16 mi) E of here earthquakes near Grays Harbor County
Mason County, WA 33 km (20 mi) SW of here earthquakes near Mason County
Thurston County, WA 55 km (34 mi) WNW of here earthquakes near Thurston County
Pacific County, WA 69 km (43 mi) NNE of here earthquakes near Pacific County
Jefferson County, WA 73 km (46 mi) S of here earthquakes near Jefferson County
Kitsap County, WA 84 km (52 mi) SW of here earthquakes near Kitsap County

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

Aftershocks so far

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

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

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.