QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0ml

1 km NE of Gorst, Washington

· 22 km deep · released about 990 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kitsap County 12 kmMason County 41 kmKing County 65 kmThurston County 67 kmPierce County 67 kmJefferson County 69 kmIsland County 69 kmSnohomish County 90 kmGrays Harbor 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 3.0 (ml)
Depth
22 km below the surface
Felt
334 reports · strongest reported intensity V
Measured shaking
intensity III (ShakeMap)
Nearest
Kitsap County, 12 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 998 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 334 people have reported feeling it to USGS.

How big was it?

This earthquake released about 990 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 340,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 15,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 11,000× the energy of this one
  4. This earthquake M 3.0 about 990 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 47.5342, -122.6958. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kitsap County, WA 12 km (8 mi) SSW of here earthquakes near Kitsap County
Mason County, WA 41 km (26 mi) ENE of here earthquakes near Mason County
King County, WA 65 km (40 mi) W of here earthquakes near King County
Thurston County, WA 67 km (42 mi) N of here earthquakes near Thurston County
Pierce County, WA 67 km (42 mi) NW of here earthquakes near Pierce County
Jefferson County, WA 69 km (43 mi) ESE of here earthquakes near Jefferson County

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

Aftershocks so far

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

  1. 1.7 1 km NE of White Center, Washington
  2. 1.8 1 km E of Enetai, Washington
  3. 2.2 3 km SW of Redmond, Washington
  4. 1.7 2 km NW of Manchester, Washington
  5. 2.5 4 km WSW of Artondale, Washington
  6. 2.0 6 km WNW of Lofall, Washington
  7. 1.7 5 km SW of Port Ludlow, Washington
  8. 1.7 10 km S of Seabeck, Washington
  9. 2.6 7 km WNW of Lofall, Washington
  10. 2.3 0 km ESE of Waller, Washington
  11. 1.9 6 km ENE of Lofall, Washington
  12. 2.2 8 km ENE of Quilcene, Washington
  13. 1.5 2 km N of Edmonds, Washington
  14. 1.6 3 km WNW of Shoreline, Washington
  15. 1.9 8 km WNW of Shelton, 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 42 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.