QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

23 km NW of Inchelium, Washington

· 0.7 km deep · released about 9 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ferry County 11 kmStevens County 40 kmPend Oreille County 85 kmLincoln County 99 kmOkanogan County 101 kmSpokane 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 1.7 (ml)
Depth
0.7 km below the surface
Felt
1 report · strongest reported intensity I
Nearest
Ferry County, 11 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 983 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

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 2.7 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 1.7 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 48.4715, -118.3802. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ferry County, WA 11 km (7 mi) E of here earthquakes near Ferry County
Stevens County, WA 40 km (25 mi) WNW of here earthquakes near Stevens County
Pend Oreille County, WA 85 km (53 mi) W of here earthquakes near Pend Oreille County
Lincoln County, WA 99 km (61 mi) N of here earthquakes near Lincoln County
Okanogan County, WA 101 km (63 mi) E of here earthquakes near Okanogan County
Spokane County, WA 119 km (74 mi) NW of here earthquakes near Spokane County

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

Aftershocks so far

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

  1. 1.5 13 km W of Valley, Washington
  2. 1.6 14 km WNW of Valley, Washington
  3. 1.6 17 km SE of Inchelium, Washington
  4. 1.6 13 km ENE of Nespelem, Washington
  5. 1.7 5 km NW of Colville, 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.