QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

Washington-British Columbia border region

· 18 km deep · released about 150 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Clallam County 37 kmSan Juan County 37 kmJefferson County 50 kmIsland County 58 kmKitsap County 90 kmMason County 102 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
18 km below the surface
Felt
9 reports · strongest reported intensity III
Nearest
Clallam County, 37 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2214 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 9 people have reported feeling it to USGS.

How big was it?

This earthquake released about 150 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 99,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 70,000× the energy of this one
  3. Around the size people start to feel M 3.0 6.2× the energy of this one
  4. This earthquake M 2.5 about 150 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 48.2545, -123.4365. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Clallam County, WA 37 km (23 mi) ENE of here earthquakes near Clallam County
San Juan County, WA 37 km (23 mi) SW of here earthquakes near San Juan County
Jefferson County, WA 50 km (31 mi) N of here earthquakes near Jefferson County
Island County, WA 58 km (36 mi) W of here earthquakes near Island County
Kitsap County, WA 90 km (56 mi) NW of here earthquakes near Kitsap County
Mason County, WA 102 km (64 mi) N of here earthquakes near Mason County

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

Aftershocks so far

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

  1. 1.6 5 km N of Oak Bay, Canada
  2. 2.3 5 km NNE of Oak Bay, Canada
  3. 1.5 18 km NNW of Sooke, Canada
  4. 1.6 8 km NE of Oak Bay, Canada
  5. 1.6 11 km E of North Saanich, Canada
  6. 1.7 9 km NW of Langford, Canada
  7. 1.6 8 km NNW of Jamestown, Washington
  8. 1.6 28 km SSW of Port Angeles, Washington
  9. 1.5 16 km NE of Jamestown, Washington
  10. 1.7 2 km N of Metchosin, Canada
  11. 2.6 24 km SSW of River Road, Washington
  12. 2.0 6 km W of Orcas, Washington
  13. 1.5 8 km ESE of Blyn, Washington
  14. 1.6 5 km NNW of Victoria, Canada
  15. 1.8 9 km WSW of Friday Harbor, 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.