QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

7 km SW of Grapeview, Washington

· 29 km deep · released about 41 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mason County 22 kmThurston County 39 kmKitsap County 44 kmPierce County 62 kmGrays Harbor County 73 kmJefferson County 75 kmKing County 83 kmLewis County 87 kmIsland County 99 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
29 km below the surface
Felt
no reports yet
Nearest
Mason County, 22 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3259 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 41 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 5.8 370,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 260,000× the energy of this one
  3. Around the size people start to feel M 3.0 23× the energy of this one
  4. This earthquake M 2.1 about 41 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 47.2813, -122.8957. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mason County, WA 22 km (14 mi) ESE of here earthquakes near Mason County
Thurston County, WA 39 km (24 mi) N of here earthquakes near Thurston County
Kitsap County, WA 44 km (27 mi) SSW of here earthquakes near Kitsap County
Pierce County, WA 62 km (38 mi) WNW of here earthquakes near Pierce County
Grays Harbor County, WA 73 km (45 mi) ENE of here earthquakes near Grays Harbor County
Jefferson County, WA 75 km (47 mi) SE of here earthquakes near Jefferson County

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

Aftershocks so far

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

  1. 1.8 1 km E of Browns Point, Washington
  2. 1.7 3 km E of Home, Washington
  3. 2.2 1 km SE of Bethel, Washington
  4. 2.1 4 km WSW of Seabeck, Washington
  5. 1.6 8 km S of Seabeck, Washington
  6. 1.7 3 km NE of Southworth, Washington
  7. 1.8 1 km WSW of Belfair, Washington
  8. 1.8 2 km SE of Manchester, Washington
  9. 2.1 4 km ENE of Dash Point, Washington
  10. 1.7 2 km SSE of Manchester, Washington
  11. 1.6 2 km SE of Manchester, Washington
  12. 2.8 2 km NNW of Fircrest, Washington
  13. 1.5 2 km ESE of Manchester, Washington
  14. 1.9 1 km SE of Dash Point, Washington
  15. 1.6 1 km ENE of Enetai, 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 1,000 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.