QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

11 km NW of Friday Harbor, Washington

· 16 km deep · released about 8.7 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Juan County 11 kmIsland County 60 kmClallam County 79 kmJefferson County 94 kmSkagit County 97 kmWhatcom County 98 kmKitsap County 113 kmSnohomish County 118 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 1.6 (ml)
Depth
16 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
San Juan County, 11 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2858 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 8.7 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,200,000× the energy of this one
  3. Around the size people start to feel M 3.0 110× the energy of this one
  4. This earthquake M 1.6 about 8.7 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 48.6077, -123.1265. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Juan County, WA 11 km (7 mi) N of here earthquakes near San Juan County
Island County, WA 60 km (37 mi) NW of here earthquakes near Island County
Clallam County, WA 79 km (49 mi) NE of here earthquakes near Clallam County
Jefferson County, WA 94 km (58 mi) NNE of here earthquakes near Jefferson County
Skagit County, WA 97 km (60 mi) W of here earthquakes near Skagit County
Whatcom County, WA 98 km (61 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

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

  1. 2.3 11 km NNE of Six Mile, Canada
  2. 2.1 13 km N of Orcas, Washington
  3. 2.0 11 km NNW of Six Mile, Canada
  4. 1.7 3 km NNE of Six Mile, Canada
  5. 2.0 9 km NW of Friday Harbor, Washington
  6. 1.7 11 km WNW of Ault Field, Washington
  7. 1.5 3 km WNW of North Saanich, Canada
  8. 2.0 17 km NW of Orcas, Washington
  9. 1.5 8 km SW of Point Roberts, Washington
  10. 1.8 13 km WSW of Anacortes, Washington
  11. 1.6 2 km S of Oak Bay, Canada
  12. 1.5 7 km W of Orcas, Washington
  13. 2.6 9 km NW of Friday Harbor, Washington
  14. 1.9 16 km E of North Saanich, Canada
  15. 1.6 8 km ENE of North Saanich, 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.