QuakeIndex

explosion · reviewed by a seismologist

M 2.2md

1 km WNW of Lewiston Orchards, Idaho

· -0.9 km deep · released about 60 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Nez Perce County 19 kmAsotin County 29 kmGarfield County 42 kmLewis County 47 kmLatah County 52 kmWhitman County 71 kmColumbia County 71 kmWallowa County 89 kmBenewah County 96 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 2.2 (md)
Depth
-0.9 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
Nez Perce County, 19 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 560 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 3 people have reported feeling it to USGS.

USGS catalogues this as explosion, not an earthquake.

How big was it?

This earthquake released about 60 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 250,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 180,000× the energy of this one
  3. Around the size people start to feel M 3.0 16× the energy of this one
  4. This earthquake M 2.2 about 60 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 46.3877, -116.9963. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Nez Perce County, ID 19 km (12 mi) WNW of here earthquakes near Nez Perce County
Asotin County, WA 29 km (18 mi) NE of here earthquakes near Asotin County
Garfield County, WA 42 km (26 mi) E of here earthquakes near Garfield County
Lewis County, ID 47 km (29 mi) WNW of here earthquakes near Lewis County
Latah County, ID 52 km (32 mi) SSW of here earthquakes near Latah County
Whitman County, WA 71 km (44 mi) SE of here earthquakes near Whitman County

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

Aftershocks so far

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

  1. 2.3 1 km NW of Asotin, Washington
  2. 2.1 5 km ENE of Pullman, Washington
  3. 1.7 4 km E of Uniontown, Washington
  4. 2.3 4 km ENE of Pullman, Washington
  5. 2.3 5 km SSW of Moscow, Idaho
  6. 1.7 6 km WSW of Troy, Idaho
  7. 1.6 8 km SSE of Pullman, Washington
  8. 2.1 2 km SSE of Lewiston Orchards, Idaho
  9. 2.2 2 km NE of Lewiston Orchards, Idaho
  10. 1.8 14 km E of Pomeroy, Washington
  11. 1.6 10 km ESE of Moscow, Idaho
  12. 1.9 7 km WSW of Deary, Idaho
  13. 1.9 7 km ENE of Troy, Idaho
  14. 2.1 5 km NNE of Pullman, Washington
  15. 1.9 8 km SSE of Pullman, 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.