QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

Washington

· 26 km deep · released about 9 lb of TNT

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10 km30 km60 km120 km N King County 25 kmSnohomish County 41 kmKitsap County 55 kmPierce County 75 kmIsland County 76 kmSkagit County 88 kmChelan County 99 kmMason County 102 kmThurston County 110 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, 25 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2820 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 9 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 1,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,200,000× the energy of this one
  3. Around the size people start to feel M 3.0 110× the energy of this one
  4. This earthquake M 1.6 about 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 47.7040, -121.9173. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
King County, WA 25 km (15 mi) NNW of here earthquakes near King County
Snohomish County, WA 41 km (25 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 75 km (46 mi) NNE of here earthquakes near Pierce County
Island County, WA 76 km (47 mi) SE of here earthquakes near Island County
Skagit County, WA 88 km (55 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

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

  1. 1.9 3 km WSW of Wilderness Rim, Washington
  2. 1.6 3 km E of Cathcart, Washington
  3. 2.1 3 km ENE of Granite Falls, Washington
  4. 1.5 2 km N of Boulevard Park, Washington
  5. 1.5 2 km SSW of Lynnwood, Washington
  6. 1.6 4 km ESE of Carnation, Washington
  7. 1.6 3 km ENE of Cathcart, Washington
  8. 1.7 2 km ENE of Granite Falls, Washington
  9. 2.8 8 km NNE of Snoqualmie, Washington
  10. 1.8 1 km N of Fairwood, Washington
  11. 1.8 3 km E of Cathcart, Washington
  12. 1.6 4 km ENE of Cathcart, Washington
  13. 1.6 4 km SE of Ames Lake, Washington
  14. 1.6 4 km SSW of Roosevelt, Washington
  15. 3.0 4 km ENE of Cathcart, 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.