QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

8 km SSE of McCall, Idaho

· 3.2 km deep · released about 43 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Adams County 33 kmValley County 34 kmWashington County 74 kmGem County 91 kmBoise County 98 kmPayette County 109 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
3.2 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Adams County, 33 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 997 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 44.8407, -116.0432. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Adams County, ID 33 km (21 mi) E of here earthquakes near Adams County
Valley County, ID 34 km (21 mi) W of here earthquakes near Valley County
Washington County, ID 74 km (46 mi) NE of here earthquakes near Washington County
Gem County, ID 91 km (57 mi) NNE of here earthquakes near Gem County
Boise County, ID 98 km (61 mi) NNW of here earthquakes near Boise County
Payette County, ID 109 km (68 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

24 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. 2.4 17 km WSW of Cascade, Idaho
  5. 2.0 16 km WSW of Cascade, Idaho
  6. 1.5 20 km NW of New Meadows, Idaho
  7. 2.0 17 km NW of New Meadows, Idaho
  8. 2.1 3 km SSE of Cascade, Idaho
  9. 2.4 21 km NW of New Meadows, Idaho
  10. 2.3 13 km NNW of New Meadows, Idaho
  11. 2.1 18 km WSW of Cascade, Idaho
  12. 1.6 15 km ENE of Donnelly, Idaho
  13. 1.5 14 km ENE of Donnelly, Idaho
  14. 3.0 14 km ENE of Donnelly, Idaho
  15. 2.4 12 km WNW of Cascade, 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.