QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

6 km ESE of Oak Bay, Canada

· 45 km deep · released about 190 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Juan County 12 kmIsland County 50 kmClallam County 61 kmJefferson County 73 kmKitsap County 97 kmSkagit County 104 kmWhatcom County 112 kmSnohomish County 115 kmMason County 120 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 2.5 (ml)
Depth
45 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
San Juan County, 12 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1937 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 190 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 78,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 55,000× the energy of this one
  3. Around the size people start to feel M 3.0 4.9× the energy of this one
  4. This earthquake M 2.5 about 190 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 48.4273, -123.2205. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Juan County, WA 12 km (8 mi) SW of here earthquakes near San Juan County
Island County, WA 50 km (31 mi) NW of here earthquakes near Island County
Clallam County, WA 61 km (38 mi) NE of here earthquakes near Clallam County
Jefferson County, WA 73 km (45 mi) NNE of here earthquakes near Jefferson County
Kitsap County, WA 97 km (60 mi) NNW of here earthquakes near Kitsap County
Skagit County, WA 104 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. 1.7 8 km WNW of Friday Harbor, Washington
  2. 2.6 21 km S of Friday Harbor, Washington
  3. 1.6 7 km S of Saanichton, Canada
  4. 1.6 4 km SSW of Esquimalt, Canada
  5. 2.2 3 km NW of Victoria, Canada
  6. 1.5 Washington
  7. 1.9 10 km N of Sooke, Canada
  8. 1.6 8 km WNW of Friday Harbor, Washington
  9. 1.8 9 km NW of Friday Harbor, Washington
  10. 1.7 1 km NNW of River Road, Washington
  11. 2.0 13 km W of Ault Field, Washington
  12. 2.0 10 km E of Oak Bay, Canada
  13. 2.6 Washington-British Columbia border region
  14. 2.3 6 km WNW of Orcas, Washington
  15. 1.6 6 km W of Orcas, 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.