QuakeIndex

Earthquake · reviewed by a seismologist

M 3.4ml

14 km SW of Smiths Ferry, Idaho

· 10 km deep · released about 1.9 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Gem County 22 kmPayette County 48 kmBoise County 49 kmWashington County 51 kmAdams County 75 kmCanyon County 76 kmAda County 86 kmValley County 86 kmElmore County 111 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 3.4 (ml)
Depth
10 km below the surface
Felt
9 reports · strongest reported intensity III
Nearest
Gem County, 22 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1338 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 9 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1.9 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 89,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 4,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,800× the energy of this one
  4. This earthquake M 3.4 about 1.9 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 4× more

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 44.2217, -116.2381. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Gem County, ID 22 km (14 mi) NE of here earthquakes near Gem County
Payette County, ID 48 km (30 mi) ENE of here earthquakes near Payette County
Boise County, ID 49 km (31 mi) WNW of here earthquakes near Boise County
Washington County, ID 51 km (32 mi) ESE of here earthquakes near Washington County
Adams County, ID 75 km (47 mi) SSE of here earthquakes near Adams County
Canyon County, ID 76 km (47 mi) NNE of here earthquakes near Canyon 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. 2.3 8 km NNW of Smiths Ferry, Idaho
  2. 1.9 8 km NNW of Smiths Ferry, Idaho
  3. 2.3 8 km NNW of Smiths Ferry, Idaho
  4. 2.3 7 km NNW of Smiths Ferry, Idaho
  5. 2.2 9 km N of Smiths Ferry, Idaho
  6. 1.6 7 km NNW of Smiths Ferry, Idaho
  7. 2.7 11 km NW of Smiths Ferry, Idaho
  8. 2.4 7 km NW of Smiths Ferry, Idaho
  9. 2.4 7 km NNW of Smiths Ferry, Idaho
  10. 3.0 6 km NNW of Smiths Ferry, Idaho
  11. 2.1 8 km NNW of Smiths Ferry, Idaho
  12. 2.3 10 km SW of Cascade, Idaho
  13. 1.7 8 km NNW of Smiths Ferry, Idaho
  14. 2.2 8 km NNW of Smiths Ferry, Idaho
  15. 1.9 8 km NNW of Smiths Ferry, 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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