QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0ml

4 km NE of Oak Bay, Canada

· 21 km deep · released about 31 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Juan County 12 kmIsland County 56 kmClallam County 62 kmJefferson County 78 kmKitsap County 104 kmSkagit County 106 kmWhatcom County 112 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
21 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
San Juan County, 12 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 568 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 31 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 5.8 480,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 340,000× the energy of this one
  3. Around the size people start to feel M 3.0 31× the energy of this one
  4. This earthquake M 2.0 about 31 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 48.4815, -123.2572. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Juan County, WA 12 km (7 mi) WSW of here earthquakes near San Juan County
Island County, WA 56 km (35 mi) NW of here earthquakes near Island County
Clallam County, WA 62 km (39 mi) NE of here earthquakes near Clallam County
Jefferson County, WA 78 km (48 mi) NNE of here earthquakes near Jefferson County
Kitsap County, WA 104 km (65 mi) NNW of here earthquakes near Kitsap County
Skagit County, WA 106 km (66 mi) W of here earthquakes near Skagit County

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

Aftershocks so far

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

  1. 1.5 10 km NW of Friday Harbor, Washington
  2. 1.6 10 km ESE of Orcas, Washington
  3. 2.5 14 km W of Marietta, Washington
  4. 1.7 8 km WNW of Friday Harbor, Washington
  5. 2.6 21 km S of Friday Harbor, Washington
  6. 1.6 7 km S of Saanichton, Canada
  7. 1.6 4 km SSW of Esquimalt, Canada
  8. 2.2 3 km NW of Victoria, Canada
  9. 1.5 Washington
  10. 1.9 10 km N of Sooke, Canada
  11. 1.6 8 km WNW of Friday Harbor, Washington
  12. 1.8 9 km NW of Friday Harbor, Washington
  13. 1.7 1 km NNW of River Road, Washington
  14. 2.0 13 km W of Ault Field, Washington
  15. 2.0 10 km E of Oak Bay, 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.