QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3ml

2 km S of Freedom, Idaho

· 10 km deep · released about 1.3 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Caribou County 45 kmBonneville County 67 kmBear Lake County 79 kmLincoln County 87 kmTeton County 90 kmSublette County 95 kmBannock County 101 kmMadison County 104 kmFranklin County 108 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 3.3 (ml)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Caribou County, 45 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3216 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 1.3 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 130,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 5,600× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,000× the energy of this one
  4. This earthquake M 3.3 about 1.3 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.8× 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 42.9634, -111.0462. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Caribou County, ID 45 km (28 mi) ENE of here earthquakes near Caribou County
Bonneville County, ID 67 km (42 mi) SE of here earthquakes near Bonneville County
Bear Lake County, ID 79 km (49 mi) NNE of here earthquakes near Bear Lake County
Lincoln County, WY 87 km (54 mi) NNW of here earthquakes near Lincoln County
Teton County, ID 90 km (56 mi) S of here earthquakes near Teton County
Sublette County, WY 95 km (59 mi) WNW of here earthquakes near Sublette County

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

Aftershocks so far

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

  1. 2.4 13 km E of Soda Springs, Idaho
  2. 2.6 10 km ENE of Soda Springs, Idaho
  3. 3.2 8 km ENE of Soda Springs, Idaho
  4. 3.0 11 km E of Soda Springs, Idaho
  5. 2.2 11 km E of Soda Springs, Idaho
  6. 4.0 10 km E of Soda Springs, Idaho
  7. 2.7 12 km E of Soda Springs, Idaho
  8. 1.9 12 km E of Soda Springs, Idaho
  9. 2.4 10 km NE of Soda Springs, Idaho
  10. 3.7 12 km E of Soda Springs, Idaho
  11. 2.8 12 km E of Soda Springs, Idaho
  12. 2.4 11 km E of Soda Springs, Idaho
  13. 3.3 9 km E of Soda Springs, Idaho
  14. 3.0 9 km E of Soda Springs, Idaho
  15. 2.9 12 km E of Soda Springs, 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 5.3 on 2017-09-02 — it released about 1,000 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.