QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

3 km NNE of Burlington, Washington

· 17 km deep · released about 16 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Skagit County 36 kmIsland County 47 kmWhatcom County 51 kmSan Juan County 59 kmSnohomish County 64 kmKitsap County 100 kmKing County 118 kmJefferson 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
17 km below the surface
Felt
no reports yet
Nearest
Skagit County, 36 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1854 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 16 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 5.8 970,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 680,000× the energy of this one
  3. Around the size people start to feel M 3.0 61× the energy of this one
  4. This earthquake M 1.8 about 16 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 48.5063, -122.3092. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Skagit County, WA 36 km (23 mi) W of here earthquakes near Skagit County
Island County, WA 47 km (29 mi) NE of here earthquakes near Island County
Whatcom County, WA 51 km (32 mi) SW of here earthquakes near Whatcom County
San Juan County, WA 59 km (36 mi) E of here earthquakes near San Juan County
Snohomish County, WA 64 km (40 mi) NW of here earthquakes near Snohomish County
Kitsap County, WA 100 km (62 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

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

  1. 1.7 4 km NE of La Conner, Washington
  2. 1.7 Washington
  3. 2.1 Washington
  4. 2.2 8 km NE of Marietta-Alderwood, Washington
  5. 1.6 7 km WSW of Coupeville, Washington
  6. 2.3 6 km NW of Sedro-Woolley, Washington
  7. 1.7 6 km NW of Sedro-Woolley, Washington
  8. 2.6 3 km NNW of Sedro-Woolley, Washington
  9. 2.0 7 km ENE of Oso, Washington
  10. 1.5 5 km ENE of Oso, Washington
  11. 2.0 5 km E of Deming, Washington
  12. 1.5 16 km SSE of Glacier, Washington
  13. 3.0 5 km ENE of Oso, Washington
  14. 2.3 3 km SSW of Silvana, Washington
  15. 2.4 4 km ENE of Camano, 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.