QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

8 km W of Smiths Ferry, Idaho

· 11 km deep · released about 170 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Gem County 32 kmWashington County 51 kmBoise County 52 kmPayette County 56 kmAdams County 67 kmValley County 76 kmCanyon County 87 kmAda County 96 kmElmore County 117 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 2.5 (ml)
Depth
11 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Gem County, 32 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1949 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 44.3099, -116.1916. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Gem County, ID 32 km (20 mi) NNE of here earthquakes near Gem County
Washington County, ID 51 km (31 mi) ESE of here earthquakes near Washington County
Boise County, ID 52 km (32 mi) NW of here earthquakes near Boise County
Payette County, ID 56 km (35 mi) NE of here earthquakes near Payette County
Adams County, ID 67 km (41 mi) SSE of here earthquakes near Adams County
Valley County, ID 76 km (47 mi) SW of here earthquakes near Valley County

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

Aftershocks so far

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

  1. 2.1 10 km W of Donnelly, Idaho
  2. 1.8 8 km WNW of Smiths Ferry, Idaho
  3. 2.6 6 km WSW of Smiths Ferry, Idaho
  4. 3.7 11 km S of Donnelly, Idaho
  5. 2.6 11 km WSW of Smiths Ferry, Idaho
  6. 2.6 8 km W of Smiths Ferry, Idaho
  7. 1.6 11 km WSW of Smiths Ferry, Idaho
  8. 2.7 14 km W of Smiths Ferry, Idaho
  9. 2.9 12 km WSW of Smiths Ferry, Idaho
  10. 2.2 9 km WSW of Smiths Ferry, Idaho
  11. 1.8 Oregon-Idaho border region
  12. 3.4 14 km SW of Smiths Ferry, Idaho
  13. 1.8 10 km NNW of Cascade, Idaho
  14. 2.1 5 km N of Smiths Ferry, Idaho
  15. 1.9 6 km S 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

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