QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

7 km ENE of Hobart, Washington

· 21 km deep · released about 60 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N King County 6 kmPierce County 49 kmKitsap County 61 kmSnohomish County 68 kmThurston County 91 kmMason County 97 kmKittitas County 98 kmIsland County 98 kmLewis County 104 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 2.2 (ml)
Depth
21 km below the surface
Felt
5 reports · strongest reported intensity III
Nearest
King County, 6 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 487 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 5 people have reported feeling it to USGS.

How big was it?

This earthquake released about 60 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 250,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 180,000× the energy of this one
  3. Around the size people start to feel M 3.0 16× the energy of this one
  4. This earthquake M 2.2 about 60 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 47.4493, -121.8863. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
King County, WA 6 km (4 mi) SW of here earthquakes near King County
Pierce County, WA 49 km (30 mi) NNE of here earthquakes near Pierce County
Kitsap County, WA 61 km (38 mi) ESE of here earthquakes near Kitsap County
Snohomish County, WA 68 km (42 mi) S of here earthquakes near Snohomish County
Thurston County, WA 91 km (57 mi) NE of here earthquakes near Thurston County
Mason County, WA 97 km (61 mi) E of here earthquakes near Mason County

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

Aftershocks so far

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

  1. 1.6 8 km SE of Enumclaw, Washington
  2. 1.5 4 km NE of Dash Point, Washington
  3. 1.9 1 km NNW of Mirrormont, Washington
  4. 1.7 1 km SE of Shoreline, Washington
  5. 2.4 6 km SSW of Wilderness Rim, Washington
  6. 1.7 1 km S of Wilderness Rim, Washington
  7. 1.5 3 km NNW of Bryn Mawr-Skyway, Washington
  8. 1.7 3 km NNW of Bryn Mawr-Skyway, Washington
  9. 1.5 4 km SW of Skykomish, Washington
  10. 2.2 2 km SE of Buckley, Washington
  11. 2.5 2 km SE of Buckley, Washington
  12. 1.8 2 km ESE of Buckley, Washington
  13. 1.6 4 km WSW of Skykomish, Washington
  14. 1.5 1 km NE of Wilburton, Washington
  15. 1.7 0 km W of Beaux Arts Village, 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 4.6 on 2019-07-12 — it released about 3,700 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.