QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

30 km NNW of Leavenworth, Washington

· 16 km deep · released about 5.9 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Chelan County 12 kmSnohomish County 76 kmKittitas County 82 kmDouglas County 83 kmKing County 89 kmSkagit County 104 kmOkanogan County 109 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 (md)
Depth
16 km below the surface
Felt
no reports yet
Nearest
Chelan County, 12 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1753 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 5.9 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 2,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,800,000× the energy of this one
  3. Around the size people start to feel M 3.0 160× the energy of this one
  4. This earthquake M 1.5 about 5.9 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 47.8605, -120.7855. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Chelan County, WA 12 km (8 mi) W of here earthquakes near Chelan County
Snohomish County, WA 76 km (47 mi) ESE of here earthquakes near Snohomish County
Kittitas County, WA 82 km (51 mi) N of here earthquakes near Kittitas County
Douglas County, WA 83 km (51 mi) W of here earthquakes near Douglas County
King County, WA 89 km (55 mi) ENE of here earthquakes near King County
Skagit County, WA 104 km (65 mi) SE of here earthquakes near Skagit County

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

Aftershocks so far

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

  1. 1.6 12 km W of Entiat, Washington
  2. 1.9 10 km SSW of Granite Falls, Washington
  3. 1.7 23 km NW of Granite Falls, Washington
  4. 1.8 7 km W of Entiat, Washington
  5. 2.6 10 km WNW of Entiat, Washington
  6. 1.7 17 km W of Leavenworth, Washington
  7. 1.7 7 km W of Entiat, Washington
  8. 1.9 4 km SW of Entiat, Washington
  9. 1.7 44 km WSW of Twisp, Washington
  10. 1.6 10 km NW of Entiat, Washington
  11. 1.8 44 km WSW of Twisp, Washington
  12. 1.6 8 km WNW of Entiat, Washington
  13. 1.7 9 km WNW of Entiat, Washington
  14. 1.9 9 km NW of Entiat, Washington
  15. 1.6 26 km NNW of Leavenworth, 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.