QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

1 km WSW of Silverdale, Washington

· 26 km deep · released about 5.7 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kitsap County 5 kmMason County 47 kmIsland County 58 kmJefferson County 64 kmKing County 68 kmPierce County 78 kmThurston County 78 kmSnohomish County 85 kmSan Juan County 101 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
26 km below the surface
Felt
no reports yet
Nearest
Kitsap County, 5 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1644 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 5.7 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 2,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.7 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 47.6358, -122.7157. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kitsap County, WA 5 km (3 mi) W of here earthquakes near Kitsap County
Mason County, WA 47 km (29 mi) NE of here earthquakes near Mason County
Island County, WA 58 km (36 mi) S of here earthquakes near Island County
Jefferson County, WA 64 km (39 mi) ESE of here earthquakes near Jefferson County
King County, WA 68 km (42 mi) WNW of here earthquakes near King County
Pierce County, WA 78 km (48 mi) NNW of here earthquakes near Pierce County

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

Aftershocks so far

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

  1. 1.6 0 km SW of Esperance, Washington
  2. 1.5 6 km WSW of Port Ludlow, Washington
  3. 1.5 Puget Sound region, Washington
  4. 1.7 Puget Sound region, Washington
  5. 2.2 7 km WSW of Seattle, Washington
  6. 1.9 3 km NNE of White Center, Washington
  7. 1.7 4 km SSW of Port Ludlow, Washington
  8. 1.6 5 km W of Burley, Washington
  9. 1.5 2 km SW of Gorst, Washington
  10. 1.9 1 km ENE of Enetai, Washington
  11. 1.6 0 km WSW of Esperance, Washington
  12. 1.6 1 km NNW of Keyport, Washington
  13. 1.9 0 km W of Keyport, Washington
  14. 1.6 5 km SSW of Port Ludlow, Washington
  15. 1.6 3 km N of Kingston, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.1 on 2017-02-23 — it released about 7,200 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

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