QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0ml

4 km WNW of Lyman, Washington

· 6.9 km deep · released about 28 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Skagit County 23 kmWhatcom County 39 kmIsland County 59 kmSnohomish County 60 kmSan Juan County 73 kmKitsap County 108 kmKing 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 2.0 (ml)
Depth
6.9 km below the surface
Felt
3 reports · strongest reported intensity II
Nearest
Skagit County, 23 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2571 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 28 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 5.8 540,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 380,000× the energy of this one
  3. Around the size people start to feel M 3.0 34× the energy of this one
  4. This earthquake M 2.0 about 28 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 48.5435, -122.1150. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Skagit County, WA 23 km (14 mi) WNW of here earthquakes near Skagit County
Whatcom County, WA 39 km (24 mi) SSW of here earthquakes near Whatcom County
Island County, WA 59 km (37 mi) NE of here earthquakes near Island County
Snohomish County, WA 60 km (37 mi) NNW of here earthquakes near Snohomish County
San Juan County, WA 73 km (45 mi) E of here earthquakes near San Juan County
Kitsap County, WA 108 km (67 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

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

  1. 2.3 4 km SW of Darrington, Washington
  2. 1.8 9 km NNE of Hamilton, Washington
  3. 1.5 5 km WSW of Acme, Washington
  4. 2.0 3 km WSW of Kendall, Washington
  5. 1.6 0 km S of Big Lake, Washington
  6. 1.7 3 km WSW of Lake Cavanaugh, Washington
  7. 1.6 6 km SSE of Oso, Washington
  8. 2.0 6 km SE of Bay View, Washington
  9. 2.1 6 km SSE of Maple Falls, Washington
  10. 2.2 5 km NE of Oak Harbor, Washington
  11. 2.1 5 km SW of Everson, Washington
  12. 2.1 6 km SE of Oso, Washington
  13. 1.6 3 km NW of Glacier, Washington
  14. 1.7 5 km NNE of Anacortes, Washington
  15. 2.3 5 km N of Anacortes, 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.