QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

20 km ESE of Verlot, Washington

· 9.3 km deep · released about 14 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Snohomish County 18 kmSkagit County 56 kmKing County 64 kmChelan County 70 kmIsland County 86 kmWhatcom County 94 kmKitsap County 94 kmPierce County 118 kmKittitas County 119 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 1.8 (ml)
Depth
9.3 km below the surface
Felt
no reports yet
Nearest
Snohomish County, 18 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3414 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 14 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 790,000× the energy of this one
  3. Around the size people start to feel M 3.0 70× the energy of this one
  4. This earthquake M 1.8 about 14 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 48.0262, -121.5248. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Snohomish County, WA 18 km (11 mi) E of here earthquakes near Snohomish County
Skagit County, WA 56 km (35 mi) SSE of here earthquakes near Skagit County
King County, WA 64 km (40 mi) NNE of here earthquakes near King County
Chelan County, WA 70 km (43 mi) WNW of here earthquakes near Chelan County
Island County, WA 86 km (54 mi) E of here earthquakes near Island County
Whatcom County, WA 94 km (58 mi) SSE of here earthquakes near Whatcom County

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

Aftershocks so far

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

  1. 2.3 2 km ENE of Granite Falls, Washington
  2. 1.9 2 km NE of Granite Falls, Washington
  3. 2.1 6 km E of Carnation, Washington
  4. 1.5 7 km ESE of Carnation, Washington
  5. 2.0 2 km ENE of Granite Falls, Washington
  6. 1.6 9 km NE of Duvall, Washington
  7. 2.0 2 km NE of Granite Falls, Washington
  8. 2.4 5 km SSE of May Creek, Washington
  9. 2.1 10 km SW of Swede Heaven, Washington
  10. 2.0 3 km E of Granite Falls, Washington
  11. 1.8 12 km S of Darrington, Washington
  12. 1.5 12 km S of Darrington, Washington
  13. 1.8 3 km ENE of Granite Falls, Washington
  14. 1.8 8 km NE of Lake Marcel-Stillwater, Washington
  15. 2.0 4 km WSW of Darrington, 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.