QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

6 km S of Acme, Washington

· 13 km deep · released about 24 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Whatcom County 33 kmSkagit County 33 kmIsland County 66 kmSan Juan County 69 kmSnohomish County 74 kmKitsap County 118 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 1.9 (ml)
Depth
13 km below the surface
Felt
no reports yet
Nearest
Whatcom County, 33 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 794 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 24 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 640,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 450,000× the energy of this one
  3. Around the size people start to feel M 3.0 40× the energy of this one
  4. This earthquake M 1.9 about 24 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 48.6597, -122.1902. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Whatcom County, WA 33 km (20 mi) SW of here earthquakes near Whatcom County
Skagit County, WA 33 km (21 mi) NW of here earthquakes near Skagit County
Island County, WA 66 km (41 mi) NNE of here earthquakes near Island County
San Juan County, WA 69 km (43 mi) ENE of here earthquakes near San Juan County
Snohomish County, WA 74 km (46 mi) NNW of here earthquakes near Snohomish County
Kitsap County, WA 118 km (74 mi) NNE of here earthquakes near Kitsap County

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

Aftershocks so far

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

  1. 2.6 4 km WSW of Concrete, Washington
  2. 2.1 4 km SE of Mount Vernon, Washington
  3. 2.0 4 km WNW of Edison, Washington
  4. 2.2 2 km NNE of La Conner, Washington
  5. 2.1 2 km NNE of La Conner, Washington
  6. 2.1 2 km NE of La Conner, Washington
  7. 1.9 2 km NE of La Conner, Washington
  8. 1.9 7 km S of La Conner, Washington
  9. 1.5 4 km WSW of Concrete, Washington
  10. 1.6 4 km W of Mount Vernon, Washington
  11. 1.7 4 km W of Mount Vernon, Washington
  12. 1.6 8 km NNE of Sedro-Woolley, Washington
  13. 2.1 5 km WNW of Lynden, Washington
  14. 1.5 7 km ENE of Abbotsford, Canada
  15. 1.8 2 km ESE of Mount Vernon, 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.