QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

7 km W of Clinton, Washington

· 28 km deep · released about 52 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Island County 27 kmKitsap County 39 kmSnohomish County 52 kmKing County 70 kmSkagit County 75 kmSan Juan County 77 kmJefferson County 82 kmMason County 87 kmPierce 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
28 km below the surface
Felt
10 reports · strongest reported intensity IV
Nearest
Island County, 27 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2650 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 10 people have reported feeling it to USGS.

How big was it?

This earthquake released about 52 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 5.8 290,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 200,000× the energy of this one
  3. Around the size people start to feel M 3.0 18× the energy of this one
  4. This earthquake M 2.2 about 52 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 47.9677, -122.4510. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Island County, WA 27 km (17 mi) SE of here earthquakes near Island County
Kitsap County, WA 39 km (24 mi) NNE of here earthquakes near Kitsap County
Snohomish County, WA 52 km (32 mi) W of here earthquakes near Snohomish County
King County, WA 70 km (44 mi) NW of here earthquakes near King County
Skagit County, WA 75 km (47 mi) SW of here earthquakes near Skagit County
San Juan County, WA 77 km (48 mi) SE of here earthquakes near San Juan County

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

Aftershocks so far

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

  1. 1.7 2 km WNW of Lake Marcel-Stillwater, Washington
  2. 1.9 1 km NW of Lake Marcel-Stillwater, Washington
  3. 1.8 3 km E of Granite Falls, Washington
  4. 1.6 4 km NNW of Lofall, Washington
  5. 1.8 17 km WNW of Coupeville, Washington
  6. 1.7 1 km NE of Granite Falls, Washington
  7. 2.2 2 km ESE of Duvall, Washington
  8. 1.6 8 km NNW of Bangor Trident Base, Washington
  9. 2.0 3 km E of Granite Falls, Washington
  10. 1.8 4 km N of Duvall, Washington
  11. 1.8 5 km NNE of Duvall, Washington
  12. 1.7 3 km ENE of Enetai, Washington
  13. 2.4 6 km S of Quilcene, Washington
  14. 1.6 3 km E of Cathcart, Washington
  15. 1.8 3 km SSW of Big Lake, 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.