QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

13 km W of Coupeville, Washington

· 50 km deep · released about 7.3 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Island County 16 kmSan Juan County 35 kmKitsap County 68 kmJefferson County 69 kmClallam County 77 kmSkagit County 83 kmSnohomish County 84 kmMason County 101 kmWhatcom County 102 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
50 km below the surface
Felt
no reports yet
Nearest
Island County, 16 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2160 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 7.3 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 2,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,500,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.3 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 48.2328, -122.8633. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Island County, WA 16 km (10 mi) WNW of here earthquakes near Island County
San Juan County, WA 35 km (22 mi) SSE of here earthquakes near San Juan County
Kitsap County, WA 68 km (42 mi) NNW of here earthquakes near Kitsap County
Jefferson County, WA 69 km (43 mi) NE of here earthquakes near Jefferson County
Clallam County, WA 77 km (48 mi) E of here earthquakes near Clallam County
Skagit County, WA 83 km (51 mi) WSW of here earthquakes near Skagit County

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

Aftershocks so far

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

  1. 1.8 8 km WNW of Orcas, Washington
  2. 1.9 8 km ENE of Port Townsend, Washington
  3. 1.7 1 km SE of Mount Vernon, Washington
  4. 1.6 3 km NNW of La Conner, Washington
  5. 2.4 8 km N of Anacortes, Washington
  6. 1.8 8 km WNW of Orcas, Washington
  7. 1.7 8 km WNW of Orcas, Washington
  8. 1.8 5 km SSW of Port Ludlow, Washington
  9. 1.7 11 km WNW of Coupeville, Washington
  10. 1.6 16 km NNW of Jamestown, Washington
  11. 1.8 1 km NE of Oak Harbor, Washington
  12. 1.8 8 km SW of Anacortes, Washington
  13. 2.5 13 km WNW of Ault Field, Washington
  14. 1.8 5 km SSW of Port Ludlow, Washington
  15. 1.7 12 km ENE 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

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