QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

9 km S of McCall, Idaho

· 5.0 km deep · released about 43 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Adams County 31 kmValley County 36 kmWashington County 71 kmGem County 89 kmBoise County 97 kmPayette County 106 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
5.0 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
Adams County, 31 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 991 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.

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 44.8239, -116.0760. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Adams County, ID 31 km (19 mi) E of here earthquakes near Adams County
Valley County, ID 36 km (23 mi) W of here earthquakes near Valley County
Washington County, ID 71 km (44 mi) NE of here earthquakes near Washington County
Gem County, ID 89 km (55 mi) NNE of here earthquakes near Gem County
Boise County, ID 97 km (60 mi) NNW of here earthquakes near Boise County
Payette County, ID 106 km (66 mi) NNE of here earthquakes near Payette County

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

Aftershocks so far

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

  1. 1.7 12 km WNW of Cascade, Idaho
  2. 2.0 14 km E of Cascade, Idaho
  3. 1.9 17 km NW of New Meadows, Idaho
  4. 1.6 8 km N of Smiths Ferry, Idaho
  5. 2.4 8 km N of Smiths Ferry, Idaho
  6. 2.4 17 km WSW of Cascade, Idaho
  7. 2.0 16 km WSW of Cascade, Idaho
  8. 1.5 20 km NW of New Meadows, Idaho
  9. 2.0 17 km NW of New Meadows, Idaho
  10. 2.1 3 km SSE of Cascade, Idaho
  11. 2.4 21 km NW of New Meadows, Idaho
  12. 2.3 13 km NNW of New Meadows, Idaho
  13. 2.1 18 km WSW of Cascade, Idaho
  14. 1.6 15 km ENE of Donnelly, Idaho
  15. 1.5 14 km ENE of Donnelly, Idaho

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.