QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

2 km NE of Sweetwater, Idaho

· 10 km deep · released about 43 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Nez Perce County 6 kmLewis County 31 kmAsotin County 42 kmLatah County 48 kmGarfield County 59 kmWhitman County 82 kmColumbia County 89 kmClearwater County 91 kmBenewah County 93 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 2.1 (ml)
Depth
10 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Nez Perce County, 6 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2466 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 43 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 350,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 250,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. This earthquake M 2.1 about 43 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 46.3884, -116.7654. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Nez Perce County, ID 6 km (4 mi) N of here earthquakes near Nez Perce County
Lewis County, ID 31 km (19 mi) WNW of here earthquakes near Lewis County
Asotin County, WA 42 km (26 mi) ENE of here earthquakes near Asotin County
Latah County, ID 48 km (30 mi) S of here earthquakes near Latah County
Garfield County, WA 59 km (37 mi) E of here earthquakes near Garfield County
Whitman County, WA 82 km (51 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

41 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. 1.6 10 km ESE of Moscow, Idaho
  11. 1.9 7 km WSW of Deary, Idaho
  12. 1.9 7 km ENE of Troy, Idaho
  13. 2.1 7 km SSW of Orofino, Idaho
  14. 1.9 8 km SSE of Pullman, Washington
  15. 2.3 3 km ESE 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.