QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

25 km NW of Leavenworth, Washington

· 4.5 km deep · released about 21 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Chelan County 21 kmSnohomish County 74 kmKittitas County 74 kmKing County 79 kmDouglas County 88 kmSkagit County 106 kmOkanogan County 119 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 1.9 (md)
Depth
4.5 km below the surface
Felt
no reports yet
Nearest
Chelan County, 21 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1285 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 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 710,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 500,000× the energy of this one
  3. Around the size people start to feel M 3.0 45× the energy of this one
  4. This earthquake M 1.9 about 21 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 47.7800, -120.8667. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Chelan County, WA 21 km (13 mi) WSW of here earthquakes near Chelan County
Snohomish County, WA 74 km (46 mi) ESE of here earthquakes near Snohomish County
Kittitas County, WA 74 km (46 mi) N of here earthquakes near Kittitas County
King County, WA 79 km (49 mi) ENE of here earthquakes near King County
Douglas County, WA 88 km (55 mi) W of here earthquakes near Douglas County
Skagit County, WA 106 km (66 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

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

  1. 1.6 12 km W of Entiat, Washington
  2. 1.7 23 km NW of Granite Falls, Washington
  3. 1.5 4 km SW of Skykomish, Washington
  4. 1.6 4 km WSW of Skykomish, Washington
  5. 2.6 10 km WNW of Entiat, Washington
  6. 1.7 17 km W of Leavenworth, Washington
  7. 1.6 10 km NW of Entiat, Washington
  8. 1.7 9 km WNW of Entiat, Washington
  9. 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.