QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

6 km NNW of Friday Harbor, Washington

· 12 km deep · released about 230 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Juan County 10 kmIsland County 56 kmClallam County 82 kmSkagit County 91 kmWhatcom County 93 kmJefferson County 94 kmKitsap County 110 kmSnohomish County 112 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
12 km below the surface
Felt
28 reports · strongest reported intensity IV
Nearest
San Juan County, 10 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3407 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 28 people have reported feeling it to USGS.

How big was it?

This earthquake released about 230 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 65,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 46,000× the energy of this one
  3. Around the size people start to feel M 3.0 4.1× the energy of this one
  4. This earthquake M 2.6 about 230 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 48.5932, -123.0493. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Juan County, WA 10 km (6 mi) NNE of here earthquakes near San Juan County
Island County, WA 56 km (35 mi) NNW of here earthquakes near Island County
Clallam County, WA 82 km (51 mi) NE of here earthquakes near Clallam County
Skagit County, WA 91 km (57 mi) W of here earthquakes near Skagit County
Whatcom County, WA 93 km (58 mi) WSW of here earthquakes near Whatcom County
Jefferson County, WA 94 km (59 mi) NNE of here earthquakes near Jefferson 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. 1.7 7 km N of Ault Field, Washington
  2. 1.6 11 km NW of Jamestown, Washington
  3. 2.4 13 km WNW of Orcas, Washington
  4. 1.7 8 km W of Ault Field, Washington
  5. 2.5 8 km SE of Friday Harbor, Washington
  6. 1.6 1 km NNE of Six Mile, Canada
  7. 2.2 6 km NNE of Oak Bay, Canada
  8. 1.5 13 km WNW of Orcas, Washington
  9. 1.9 3 km S of Marietta, Washington
  10. 1.7 2 km SSE of Six Mile, Canada
  11. 1.8 22 km NW of Orcas, Washington
  12. 1.7 13 km W of Ault Field, Washington
  13. 2.9 7 km NW of La Conner, Washington
  14. 1.9 8 km NW of Friday Harbor, Washington
  15. 1.8 4 km S of Point Roberts, 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.