QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

2 km ESE of Conway, Washington

· 11 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Island County 33 kmSkagit County 41 kmSnohomish County 51 kmSan Juan County 61 kmWhatcom County 67 kmKitsap County 81 kmKing County 100 kmJefferson County 107 kmClallam County 119 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
11 km below the surface
Felt
no reports yet
Nearest
Island County, 33 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3341 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 11 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 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 970,000× the energy of this one
  3. Around the size people start to feel M 3.0 86× the energy of this one
  4. This earthquake M 1.7 about 11 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 48.3325, -122.3167. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Island County, WA 33 km (20 mi) NE of here earthquakes near Island County
Skagit County, WA 41 km (26 mi) WSW of here earthquakes near Skagit County
Snohomish County, WA 51 km (32 mi) NW of here earthquakes near Snohomish County
San Juan County, WA 61 km (38 mi) ESE of here earthquakes near San Juan County
Whatcom County, WA 67 km (42 mi) SSW of here earthquakes near Whatcom County
Kitsap County, WA 81 km (50 mi) NNE of here earthquakes near Kitsap County

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

Aftershocks so far

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

  1. 2.1 6 km SSE of Acme, Washington
  2. 2.0 2 km NE of Granite Falls, Washington
  3. 1.6 6 km NE of Port Townsend, Washington
  4. 1.7 6 km NE of Port Townsend, Washington
  5. 1.6 4 km SW of Geneva, Washington
  6. 1.6 7 km SSW of Geneva, Washington
  7. 2.1 10 km SW of Swede Heaven, Washington
  8. 2.0 3 km E of Granite Falls, Washington
  9. 1.6 3 km SE of Warm Beach, Washington
  10. 1.6 5 km NNW of Ault Field, Washington
  11. 1.7 4 km N of Weallup Lake, Washington
  12. 1.8 3 km ENE of Granite Falls, Washington
  13. 1.8 6 km NE of Port Townsend, Washington
  14. 1.7 6 km SSE of Acme, Washington
  15. 1.5 1 km ENE of Bay View, 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.