QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

11 km WNW of Coupeville, Washington

· 57 km deep · released about 9.6 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 69 kmJefferson County 70 kmClallam County 79 kmSkagit County 81 kmSnohomish County 83 kmWhatcom County 100 kmMason 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 1.7 (ml)
Depth
57 km below the surface
Felt
no reports yet
Nearest
Island County, 16 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1796 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 9.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 99× the energy of this one
  4. This earthquake M 1.7 about 9.6 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 48.2430, -122.8437. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Island County, WA 16 km (10 mi) NW 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 69 km (43 mi) NNW of here earthquakes near Kitsap County
Jefferson County, WA 70 km (44 mi) NE of here earthquakes near Jefferson County
Clallam County, WA 79 km (49 mi) E of here earthquakes near Clallam County
Skagit County, WA 81 km (50 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

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

  1. 1.7 4 km SSW of Port Ludlow, Washington
  2. 1.6 5 km SSW of Port Ludlow, Washington
  3. 1.6 9 km NW of Orcas, Washington
  4. 1.6 Puget Sound region, Washington
  5. 1.5 4 km SSW of Clinton, Washington
  6. 1.6 8 km NNW of Jamestown, Washington
  7. 1.7 4 km NE of La Conner, Washington
  8. 1.5 7 km WNW of Lofall, Washington
  9. 1.9 7 km SSW of Port Ludlow, Washington
  10. 1.9 7 km WNW of Lofall, Washington
  11. 1.5 8 km WNW of Lofall, Washington
  12. 3.7 7 km WNW of Lofall, Washington
  13. 1.5 16 km NE of Jamestown, Washington
  14. 2.3 Washington-British Columbia border region
  15. 1.7 6 km E of Quilcene, 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.