QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

0 km E of Six Mile, Canada

· 23 km deep · released about 13 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Juan County 26 kmClallam County 50 kmIsland County 67 kmJefferson County 73 kmKitsap County 109 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 1.8 (ml)
Depth
23 km below the surface
Felt
no reports yet
Nearest
San Juan County, 26 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2988 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 13 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 810,000× the energy of this one
  3. Around the size people start to feel M 3.0 72× the energy of this one
  4. This earthquake M 1.8 about 13 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 48.4570, -123.4548. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Juan County, WA 26 km (16 mi) WSW of here earthquakes near San Juan County
Clallam County, WA 50 km (31 mi) NE of here earthquakes near Clallam County
Island County, WA 67 km (42 mi) WNW of here earthquakes near Island County
Jefferson County, WA 73 km (45 mi) N of here earthquakes near Jefferson County
Kitsap County, WA 109 km (68 mi) NNW of here earthquakes near Kitsap County
Whatcom County, WA 126 km (79 mi) WSW of here earthquakes near Whatcom County

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

Aftershocks so far

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

  1. 2.2 7 km NNW of Victoria, Canada
  2. 2.1 19 km NNW of Jamestown, Washington
  3. 1.7 10 km W of Friday Harbor, Washington
  4. 1.8 9 km NW of Friday Harbor, Washington
  5. 1.9 4 km SSE of Colwood, Canada
  6. 1.6 10 km WNW of Orcas, Washington
  7. 2.5 Washington-British Columbia border region
  8. 2.0 9 km S of Friday Harbor, Washington
  9. 1.5 12 km ENE of North Saanich, Canada
  10. 3.0 10 km NW of Friday Harbor, Washington
  11. 1.6 6 km E of Oak Bay, Canada
  12. 2.3 11 km NNE of Six Mile, Canada
  13. 2.1 13 km N of Orcas, Washington
  14. 2.0 11 km NNW of Six Mile, Canada
  15. 1.7 3 km NNE of Six Mile, 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.