QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

16 km E of North Saanich, Canada

· 20 km deep · released about 19 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Juan County 22 kmIsland County 71 kmClallam County 82 kmWhatcom County 102 kmJefferson County 102 kmSkagit County 105 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 1.9 (ml)
Depth
20 km below the surface
Felt
no reports yet
Nearest
San Juan County, 22 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2475 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 19 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 790,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 560,000× the energy of this one
  3. Around the size people start to feel M 3.0 50× the energy of this one
  4. This earthquake M 1.9 about 19 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 48.6947, -123.2048. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Juan County, WA 22 km (14 mi) NNW of here earthquakes near San Juan County
Island County, WA 71 km (44 mi) NNW of here earthquakes near Island County
Clallam County, WA 82 km (51 mi) NE of here earthquakes near Clallam County
Whatcom County, WA 102 km (63 mi) W of here earthquakes near Whatcom County
Jefferson County, WA 102 km (63 mi) NNE of here earthquakes near Jefferson County
Skagit County, WA 105 km (65 mi) WNW of here earthquakes near Skagit County

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

Aftershocks so far

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

  1. 1.5 9 km E of Ganges, Canada
  2. 1.5 8 km WNW of Orcas, Washington
  3. 1.5 9 km WNW of Orcas, Washington
  4. 1.8 8 km WNW of Orcas, Washington
  5. 2.3 12 km ENE of Ganges, Canada
  6. 1.6 9 km E of Ganges, Canada
  7. 3.7 12 km ENE of Ganges, Canada
  8. 1.8 8 km WNW of Orcas, Washington
  9. 1.7 8 km WNW of Orcas, Washington
  10. 1.6 16 km NNW of Jamestown, Washington
  11. 1.8 8 km SW of Anacortes, Washington
  12. 2.5 13 km WNW of Ault Field, Washington
  13. 2.1 5 km NE of Six Mile, Canada
  14. 2.0 4 km NE of Oak Bay, Canada
  15. 2.2 16 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.