QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

15 km ESE of Acme, Washington

· 0.1 km deep · released about 38 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Whatcom County 22 kmSkagit County 25 kmSnohomish County 72 kmIsland County 76 kmSan Juan County 83 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 2.1 (ml)
Depth
0.1 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Whatcom County, 22 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 116 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 38 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 390,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 280,000× the energy of this one
  3. Around the size people start to feel M 3.0 25× the energy of this one
  4. This earthquake M 2.1 about 38 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 48.6822, -122.0040. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Whatcom County, WA 22 km (13 mi) SW of here earthquakes near Whatcom County
Skagit County, WA 25 km (16 mi) NNW of here earthquakes near Skagit County
Snohomish County, WA 72 km (45 mi) NNW of here earthquakes near Snohomish County
Island County, WA 76 km (47 mi) NE of here earthquakes near Island County
San Juan County, WA 83 km (52 mi) ENE of here earthquakes near San Juan County
Kitsap County, WA 125 km (78 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

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

  1. 1.1 6 km NE of Oso, Washington
  2. 0.7 6 km SSE of Concrete, Washington
  3. 0.9 9 km ENE of Abbotsford, Canada
  4. 1.6 3 km WSW of Lake Cavanaugh, Washington
  5. 2.6 2 km ENE of Mount Vernon, Washington
  6. 1.6 7 km ENE of Abbotsford, Canada
  7. 1.8 15 km ESE of Acme, Washington
  8. 1.9 7 km SSE of Concrete, Washington
  9. 1.9 2 km NNE of Lyman, Washington
  10. 1.8 8 km N of Maple Falls, Washington
  11. 1.5 11 km NE of Abbotsford, Canada
  12. 1.7 3 km N of Lyman, Washington
  13. 2.2 2 km N of Lyman, Washington
  14. 1.8 5 km E of Acme, Washington
  15. 1.5 10 km NE of Abbotsford, Canada

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.