QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0ml

6 km NE of Oak Bay, Canada

· 22 km deep · released about 950 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Juan County 10 kmIsland County 55 kmClallam County 64 kmJefferson County 78 kmKitsap County 103 kmSkagit County 105 kmWhatcom County 110 kmSnohomish 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 3.0 (ml)
Depth
22 km below the surface
Felt
112 reports · strongest reported intensity III
Measured shaking
intensity II (ShakeMap)
Nearest
San Juan County, 10 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1330 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 112 people have reported feeling it to USGS.

How big was it?

This earthquake released about 950 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 350,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 11,000× the energy of this one
  4. This earthquake M 3.0 about 950 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 48.4835, -123.2365. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Juan County, WA 10 km (6 mi) WSW of here earthquakes near San Juan County
Island County, WA 55 km (34 mi) NW of here earthquakes near Island County
Clallam County, WA 64 km (40 mi) NE of here earthquakes near Clallam County
Jefferson County, WA 78 km (49 mi) NNE of here earthquakes near Jefferson County
Kitsap County, WA 103 km (64 mi) NNW of here earthquakes near Kitsap County
Skagit County, WA 105 km (65 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

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

  1. 2.0 13 km W of Ault Field, Washington
  2. 2.0 10 km E of Oak Bay, Canada
  3. 2.6 Washington-British Columbia border region
  4. 2.3 6 km WNW of Orcas, Washington
  5. 1.6 6 km W of Orcas, Washington
  6. 2.7 6 km WNW of Orcas, Washington
  7. 2.3 16 km SSE of Friday Harbor, Washington
  8. 1.6 5 km N of Oak Bay, Canada
  9. 2.3 5 km NNE of Oak Bay, Canada
  10. 1.6 8 km NE of Oak Bay, Canada
  11. 1.6 11 km E of North Saanich, Canada
  12. 1.6 9 km WSW of Cowichan Bay, Canada
  13. 1.7 9 km NW of Langford, Canada
  14. 1.6 9 km NW of Orcas, Washington
  15. 1.6 8 km NNW of Jamestown, 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.