QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

21 km S of Friday Harbor, Washington

· 46 km deep · released about 250 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Juan County 20 kmIsland County 32 kmClallam County 71 kmJefferson County 72 kmKitsap County 82 kmSkagit County 88 kmSnohomish County 97 kmWhatcom County 102 kmMason County 111 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 2.6 (ml)
Depth
46 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
San Juan County, 20 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 568 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 250 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 61,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 43,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.8× the energy of this one
  4. This earthquake M 2.6 about 250 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 48.3448, -122.9935. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Juan County, WA 20 km (12 mi) SSE of here earthquakes near San Juan County
Island County, WA 32 km (20 mi) NW of here earthquakes near Island County
Clallam County, WA 71 km (44 mi) ENE of here earthquakes near Clallam County
Jefferson County, WA 72 km (45 mi) NNE of here earthquakes near Jefferson County
Kitsap County, WA 82 km (51 mi) NNW of here earthquakes near Kitsap County
Skagit County, WA 88 km (55 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

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

  1. 1.8 5 km SE of Oak Bay, Canada
  2. 1.9 5 km NNE of Port Angeles, Washington
  3. 1.7 2 km NE of Six Mile, Canada
  4. 2.1 4 km WSW of Ault Field, Washington
  5. 2.1 7 km NW of Jamestown, Washington
  6. 2.1 2 km S of River Road, Washington
  7. 1.5 8 km WNW of Orcas, Washington
  8. 2.5 4 km ENE of Oak Bay, Canada
  9. 1.5 10 km E of Orcas, Washington
  10. 3.9 14 km SW of Blyn, Washington
  11. 4.5 2025 Orcas Island, Washington
  12. 2.3 1 km NNE of Esquimalt, Canada
  13. 3.7 16 km SSE of Victoria, Canada
  14. 1.8 17 km NNW of Jamestown, Washington
  15. 1.5 11 km NNW 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.