QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

5 km W of Port Hadlock-Irondale, Washington

· 21 km deep · released about 10 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Island County 20 kmKitsap County 46 kmSan Juan County 56 kmJefferson County 56 kmClallam County 77 kmMason County 79 kmSnohomish County 81 kmSkagit County 93 kmKing County 97 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
21 km below the surface
Felt
no reports yet
Nearest
Island County, 20 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3261 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 10 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 1,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 92× the energy of this one
  4. This earthquake M 1.7 about 10 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 48.0328, -122.8590. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Island County, WA 20 km (12 mi) SW of here earthquakes near Island County
Kitsap County, WA 46 km (29 mi) NNW of here earthquakes near Kitsap County
San Juan County, WA 56 km (35 mi) SSE of here earthquakes near San Juan County
Jefferson County, WA 56 km (35 mi) ENE of here earthquakes near Jefferson County
Clallam County, WA 77 km (48 mi) E of here earthquakes near Clallam County
Mason County, WA 79 km (49 mi) NNE of here earthquakes near Mason 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 4 km SW of Clinton, Washington
  2. 1.5 6 km W of Camano, Washington
  3. 1.7 13 km W of Ault Field, Washington
  4. 1.6 2 km NE of Shoreline, Washington
  5. 1.9 4 km ESE of Camano, Washington
  6. 2.9 7 km NW of La Conner, Washington
  7. 1.7 1 km SE of Keyport, Washington
  8. 1.8 3 km S of Suquamish, Washington
  9. 2.3 5 km ENE of Port Townsend, Washington
  10. 2.5 5 km SE of Blyn, Washington
  11. 1.9 3 km E of Indianola, Washington
  12. 1.9 6 km SSE of Port Ludlow, Washington
  13. 2.0 1 km SE of Keyport, Washington
  14. 1.9 1 km WSW of Freeland, Washington
  15. 3.3 16 km NNE 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.