QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

1 km S of Lake Marcel-Stillwater, Washington

· 26 km deep · released about 7.1 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N King County 22 kmSnohomish County 43 kmKitsap County 55 kmPierce County 72 kmIsland County 77 kmSkagit County 91 kmChelan County 99 kmMason County 101 kmThurston County 108 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 1.6 (ml)
Depth
26 km below the surface
Felt
no reports yet
Nearest
King County, 22 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3132 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 7.1 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,500,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.1 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 47.6798, -121.9163. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
King County, WA 22 km (14 mi) NNW of here earthquakes near King County
Snohomish County, WA 43 km (27 mi) SSW of here earthquakes near Snohomish County
Kitsap County, WA 55 km (34 mi) E of here earthquakes near Kitsap County
Pierce County, WA 72 km (45 mi) NNE of here earthquakes near Pierce County
Island County, WA 77 km (48 mi) SE of here earthquakes near Island County
Skagit County, WA 91 km (56 mi) S of here earthquakes near Skagit County

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

Aftershocks so far

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

  1. 2.0 1 km NNE of Silver Firs, Washington
  2. 1.5 0 km NNE of Lake Marcel-Stillwater, Washington
  3. 1.6 Washington
  4. 2.1 5 km SW of Clinton, Washington
  5. 2.2 5 km ENE of Lake Roesiger, Washington
  6. 2.2 0 km S of Union Hill-Novelty Hill, Washington
  7. 1.9 3 km ENE of Granite Falls, Washington
  8. 1.7 1 km WSW of Mountlake Terrace, Washington
  9. 2.2 15 km NE of May Creek, Washington
  10. 1.7 3 km NE of Southworth, Washington
  11. 1.8 4 km SW of Clinton, Washington
  12. 2.3 2 km ENE of Granite Falls, Washington
  13. 1.6 2 km NE of Shoreline, Washington
  14. 1.5 3 km SSE of Des Moines, Washington
  15. 1.9 2 km NE of Granite Falls, 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.