QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0ml

southern Idaho

· 10 km deep · released about 950 lb of TNT

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10 km30 km60 km120 km N Valley County 46 kmBoise County 71 kmCuster County 84 kmAdams County 103 kmGem County 105 kmLemhi County 116 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 3.0 (ml)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Valley County, 46 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2269 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 950 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 350,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 11,000× the energy of this one
  4. This earthquake M 3.0 about 950 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 44.5331, -115.2493. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Valley County, ID 46 km (29 mi) SE of here earthquakes near Valley County
Boise County, ID 71 km (44 mi) NNE of here earthquakes near Boise County
Custer County, ID 84 km (52 mi) WNW of here earthquakes near Custer County
Adams County, ID 103 km (64 mi) ESE of here earthquakes near Adams County
Gem County, ID 105 km (66 mi) ENE of here earthquakes near Gem County
Lemhi County, ID 116 km (72 mi) WSW of here earthquakes near Lemhi 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 12 km NE of Stanley, Idaho
  2. 2.1 38 km NW of Stanley, Idaho
  3. 2.4 25 km NW of Stanley, Idaho
  4. 2.4 29 km NW of Stanley, Idaho
  5. 2.6 27 km NW of Stanley, Idaho
  6. 2.6 22 km WNW of Stanley, Idaho
  7. 3.0 14 km W of Stanley, Idaho
  8. 2.9 11 km WSW of Stanley, Idaho
  9. 3.1 11 km W of Stanley, Idaho
  10. 2.4 17 km NW of Stanley, Idaho
  11. 2.4 25 km NW of Stanley, Idaho
  12. 2.8 27 km NW of Stanley, Idaho
  13. 3.0 28 km NW of Stanley, Idaho
  14. 3.7 8 km WNW of Stanley, Idaho
  15. 2.5 36 km NW of Stanley, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 6.5 on 2020-03-31 — it released about 180,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

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