QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

15 km W of Freedom, Idaho

· 5.0 km deep · released about 21 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Caribou County 36 kmBonneville County 53 kmBear Lake County 81 kmTeton County 84 kmBannock County 89 kmMadison County 93 kmLincoln County 98 kmBingham County 98 kmFranklin County 105 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 1.9 (ml)
Depth
5.0 km below the surface
Felt
1 report · strongest reported intensity I
Nearest
Caribou County, 36 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1247 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 710,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 500,000× the energy of this one
  3. Around the size people start to feel M 3.0 45× the energy of this one
  4. This earthquake M 1.9 about 21 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 43.0097, -111.2303. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Caribou County, ID 36 km (22 mi) NE of here earthquakes near Caribou County
Bonneville County, ID 53 km (33 mi) SE of here earthquakes near Bonneville County
Bear Lake County, ID 81 km (50 mi) N of here earthquakes near Bear Lake County
Teton County, ID 84 km (52 mi) S of here earthquakes near Teton County
Bannock County, ID 89 km (55 mi) ENE of here earthquakes near Bannock County
Madison County, ID 93 km (58 mi) SSE of here earthquakes near Madison 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. 2.4 12 km E of Irwin, Idaho
  2. 2.5 8 km E of Star Valley Ranch, Wyoming
  3. 2.4 8 km ESE of Soda Springs, Idaho
  4. 2.2 12 km ESE of Soda Springs, Idaho
  5. 1.7 13 km ESE of Soda Springs, Idaho
  6. 2.6 18 km WNW of Auburn, Wyoming
  7. 2.1 7 km ESE of Alpine Northeast, Wyoming
  8. 2.7 15 km WSW of Auburn, Wyoming
  9. 1.6 18 km NE of Star Valley Ranch, Wyoming
  10. 1.5 18 km ENE of Star Valley Ranch, Wyoming
  11. 2.5 14 km W of Fairview, Wyoming
  12. 2.5 13 km NNE of Soda Springs, Idaho
  13. 1.6 8 km S of Hoback, Wyoming
  14. 1.9 5 km NNW of Hoback, Wyoming
  15. 1.9 13 km NNW of Georgetown, 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 130,000 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.