QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

6 km NNE of Lofall, Washington

· 23 km deep · released about 5.9 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kitsap County 25 kmIsland County 33 kmSnohomish County 67 kmJefferson County 68 kmMason County 70 kmKing County 73 kmSan Juan County 80 kmSkagit County 92 kmPierce 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 1.5 (ml)
Depth
23 km below the surface
Felt
no reports yet
Nearest
Kitsap County, 25 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2126 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 5.9 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,800,000× the energy of this one
  3. Around the size people start to feel M 3.0 160× the energy of this one
  4. This earthquake M 1.5 about 5.9 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 47.8662, -122.6265. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kitsap County, WA 25 km (16 mi) N of here earthquakes near Kitsap County
Island County, WA 33 km (20 mi) S of here earthquakes near Island County
Snohomish County, WA 67 km (42 mi) WSW of here earthquakes near Snohomish County
Jefferson County, WA 68 km (42 mi) E of here earthquakes near Jefferson County
Mason County, WA 70 km (44 mi) NE of here earthquakes near Mason County
King County, WA 73 km (45 mi) NW of here earthquakes near King County

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

Aftershocks so far

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

  1. 2.8 0 km S of Boulevard Park, Washington
  2. 2.1 0 km SSW of Boulevard Park, Washington
  3. 1.6 0 km WSW of Boulevard Park, Washington
  4. 1.6 0 km NW of Boulevard Park, Washington
  5. 1.8 5 km S of Hansville, Washington
  6. 1.6 8 km NE of Jamestown, Washington
  7. 2.0 7 km NNE of Jamestown, Washington
  8. 1.8 3 km WNW of Navy Yard City, Washington
  9. 2.6 18 km WSW of Quilcene, Washington
  10. 1.6 4 km WNW of Freeland, Washington
  11. 1.5 6 km NNW of Lofall, Washington
  12. 1.6 0 km WSW of Parkwood, Washington
  13. 1.7 5 km NE of Kingston, Washington
  14. 2.5 1 km NE of Enetai, Washington
  15. 2.3 1 km W of Oak Harbor, 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.