QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

5 km NNE of Duvall, Washington

· 24 km deep · released about 5.7 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Snohomish County 33 kmKing County 35 kmKitsap County 54 kmIsland County 67 kmSkagit County 79 kmPierce County 83 kmChelan County 100 kmMason County 103 kmThurston County 115 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
24 km below the surface
Felt
no reports yet
Nearest
Snohomish County, 33 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1671 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 47.7905, -121.9593. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Snohomish County, WA 33 km (20 mi) SSW of here earthquakes near Snohomish County
King County, WA 35 km (22 mi) NNW of here earthquakes near King County
Kitsap County, WA 54 km (34 mi) ENE of here earthquakes near Kitsap County
Island County, WA 67 km (42 mi) SE of here earthquakes near Island County
Skagit County, WA 79 km (49 mi) S of here earthquakes near Skagit County
Pierce County, WA 83 km (52 mi) N of here earthquakes near Pierce 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. 1.6 2 km NNE of Woods Creek, Washington
  2. 1.5 Washington
  3. 1.7 2 km SSW of Burien, Washington
  4. 1.6 4 km ENE of Lake Marcel-Stillwater, Washington
  5. 1.5 3 km WSW of North Bend, Washington
  6. 1.5 3 km ENE of Lake Marcel-Stillwater, Washington
  7. 1.6 0 km SW of Esperance, Washington
  8. 1.5 Puget Sound region, Washington
  9. 1.7 1 km E of Granite Falls, Washington
  10. 2.2 7 km WSW of Seattle, Washington
  11. 1.9 3 km NNE of White Center, Washington
  12. 1.6 11 km NE of North Bend, Washington
  13. 1.6 0 km WSW of Esperance, Washington
  14. 1.6 2 km E of Granite Falls, Washington
  15. 2.7 4 km E of Lake Marcel-Stillwater, 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 4.6 on 2019-07-12 — it released about 39,000 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.