QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

34 km W of Freedom, Idaho

· 5.0 km deep · released about 16 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Caribou County 21 kmBonneville County 49 kmBannock County 69 kmBear Lake County 76 kmBingham County 80 kmTeton County 91 kmFranklin County 93 kmMadison County 93 kmLincoln County 104 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 1.8 (ml)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Caribou County, 21 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1075 days ago

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

How big was it?

This earthquake released about 16 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 930,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 660,000× the energy of this one
  3. Around the size people start to feel M 3.0 59× the energy of this one
  4. This earthquake M 1.8 about 16 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 42.9652, -111.4698. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Caribou County, ID 21 km (13 mi) NNE of here earthquakes near Caribou County
Bonneville County, ID 49 km (31 mi) SSE of here earthquakes near Bonneville County
Bannock County, ID 69 km (43 mi) ENE of here earthquakes near Bannock County
Bear Lake County, ID 76 km (47 mi) N of here earthquakes near Bear Lake County
Bingham County, ID 80 km (50 mi) ESE of here earthquakes near Bingham County
Teton County, ID 91 km (56 mi) SSW of here earthquakes near Teton County

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

Aftershocks so far

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

  1. 2.2 11 km ESE of Soda Springs, Idaho
  2. 2.5 17 km ENE of Georgetown, Idaho
  3. 2.0 10 km NNW of Georgetown, Idaho
  4. 2.3 17 km W of Fairview, Wyoming
  5. 1.8 17 km WSW of Auburn, Wyoming
  6. 1.7 18 km WSW of Auburn, Wyoming
  7. 2.3 6 km S of Bancroft, Idaho
  8. 2.8 6 km SSW of Bancroft, Idaho
  9. 2.5 21 km E of Soda Springs, Idaho
  10. 2.6 5 km NNE of Star Valley Ranch, Wyoming
  11. 2.0 3 km N of Grace, Idaho
  12. 2.9 15 km WSW of Freedom, Idaho
  13. 1.5 14 km E of Soda Springs, Idaho
  14. 1.6 22 km ENE of Soda Springs, Idaho
  15. 2.3 5 km ENE 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 170,000 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.