QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

7 km WSW of Chelan, Washington

· 6.5 km deep · released about 9.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Douglas County 32 kmChelan County 38 kmGrant County 83 kmOkanogan County 85 kmKittitas County 88 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 1.7 (ml)
Depth
6.5 km below the surface
Felt
no reports yet
Nearest
Douglas County, 32 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 39 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 9.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 99× the energy of this one
  4. This earthquake M 1.7 about 9.6 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 47.8208, -120.1130. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Douglas County, WA 32 km (20 mi) WNW of here earthquakes near Douglas County
Chelan County, WA 38 km (24 mi) E of here earthquakes near Chelan County
Grant County, WA 83 km (52 mi) NW of here earthquakes near Grant County
Okanogan County, WA 85 km (53 mi) SSW of here earthquakes near Okanogan County
Kittitas County, WA 88 km (55 mi) NNE of here earthquakes near Kittitas County
Ferry County, WA 138 km (86 mi) WSW of here earthquakes near Ferry County

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

Aftershocks so far

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

  1. 0.9 5 km ENE of Entiat, Washington
  2. 2.3 4 km NW of Waterville, 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.