QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0ml

21 km ENE of Smiths Ferry, Idaho

Yes. A magnitude 2.0 earthquake was recorded 21 km ENE of Smiths Ferry, Idaho, 89 km (56 mi) NNE of Boise City, ID, at 11:00 am MDT on 3 April 2022 (17:00 UTC), 6.5 km deep.

89 km (56 mi) NNE of Boise City, ID

· 6.5 km deep · released about 32 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Boise County 41 kmGem County 56 kmValley County 59 kmAdams County 77 kmWashington County 78 kmPayette County 83 kmAda County 105 kmCanyon County 107 kmElmore County 110 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
Idaho today
every earthquake in Idaho in the last 24 hours
Magnitude
M 2.0 (ml)
Depth
6.5 km below the surface
Felt
no reports yet
Nearest
Boise County, 41 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1683 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth, people at rest would likely notice it out to about 15 km (9 mi) from the epicentre. Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

How big was it?

This earthquake released about 32 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 470,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 330,000× the energy of this one
  3. Around the size people start to feel M 3.0 30× the energy of this one
  4. This earthquake M 2.0 about 32 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.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 44.3493, -115.8278. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Boise County, ID 41 km (26 mi) SSE earthquakes near Boise County
Gem County, ID 56 km (35 mi) SW earthquakes near Gem County
Valley County, ID 59 km (36 mi) NNE earthquakes near Valley County
Adams County, ID 77 km (48 mi) NW earthquakes near Adams County
Washington County, ID 78 km (48 mi) W earthquakes near Washington County
Payette County, ID 83 km (52 mi) WSW earthquakes near Payette County

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

Aftershocks so far

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

  1. 2.0 7 km NNW of Smiths Ferry, Idaho
  2. 2.4 7 km NNW of Smiths Ferry, Idaho
  3. 2.1 7 km NNW of Smiths Ferry, Idaho
  4. 2.2 7 km NNW of Smiths Ferry, Idaho
  5. 2.1 7 km NNW of Smiths Ferry, Idaho
  6. 2.1 8 km NNW of Smiths Ferry, Idaho
  7. 2.8 6 km NNW of Smiths Ferry, Idaho
  8. 1.6 7 km N of Smiths Ferry, Idaho
  9. 4.9 10 km N of Smiths Ferry, Idaho
  10. 1.9 12 km ENE of Donnelly, Idaho
  11. 1.9 13 km NW of Smiths Ferry, Idaho
  12. 2.3 7 km WNW of Smiths Ferry, Idaho
  13. 2.3 28 km NNE of Lowman, Idaho
  14. 2.1 8 km WNW of Smiths Ferry, Idaho
  15. 2.2 10 km WNW 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.