QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0ml

1 km NNE of Silver Firs, Washington

· 24 km deep · released about 31 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Snohomish County 35 kmKitsap County 46 kmKing County 49 kmIsland County 50 kmSkagit County 73 kmPierce County 92 kmMason County 97 kmSan Juan County 100 kmJefferson County 103 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 2.0 (ml)
Depth
24 km below the surface
Felt
no reports yet
Nearest
Snohomish County, 35 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2813 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 31 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 480,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 340,000× the energy of this one
  3. Around the size people start to feel M 3.0 31× the energy of this one
  4. This earthquake M 2.0 about 31 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 47.8777, -122.1475. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Snohomish County, WA 35 km (22 mi) SW of here earthquakes near Snohomish County
Kitsap County, WA 46 km (29 mi) NE of here earthquakes near Kitsap County
King County, WA 49 km (30 mi) NNW of here earthquakes near King County
Island County, WA 50 km (31 mi) SE of here earthquakes near Island County
Skagit County, WA 73 km (45 mi) SSW of here earthquakes near Skagit County
Pierce County, WA 92 km (57 mi) N of here earthquakes near Pierce 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. 1.8 9 km NNW of Freeland, Washington
  2. 1.8 1 km N of Fairwood, Washington
  3. 1.8 3 km E of Cathcart, Washington
  4. 1.6 4 km ENE of Cathcart, Washington
  5. 2.0 1 km ENE of Enetai, Washington
  6. 1.6 4 km SE of Ames Lake, Washington
  7. 1.6 4 km SSW of Roosevelt, Washington
  8. 3.0 4 km ENE of Cathcart, Washington
  9. 1.7 4 km ENE of Cathcart, Washington
  10. 2.4 4 km SSW of Roosevelt, Washington
  11. 1.9 4 km SSW of Roosevelt, Washington
  12. 2.5 3 km W of Monroe, Washington
  13. 1.6 3 km ENE of Cathcart, Washington
  14. 2.3 4 km SSW of Roosevelt, Washington
  15. 1.6 4 km E of Cathcart, 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.