QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

16 km WSW of Georgetown, Idaho

· 4.2 km deep · released about 16 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Bear Lake County 26 kmFranklin County 37 kmCaribou County 38 kmBannock County 61 kmLincoln County 76 kmCache County 80 kmOneida County 84 kmRich County 95 kmBonneville County 106 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
4.2 km below the surface
Felt
no reports yet
Nearest
Bear Lake County, 26 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1859 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 42.4453, -111.5638. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Bear Lake County, ID 26 km (16 mi) NW of here earthquakes near Bear Lake County
Franklin County, ID 37 km (23 mi) NE of here earthquakes near Franklin County
Caribou County, ID 38 km (24 mi) S of here earthquakes near Caribou County
Bannock County, ID 61 km (38 mi) ESE of here earthquakes near Bannock County
Lincoln County, WY 76 km (47 mi) WNW of here earthquakes near Lincoln County
Cache County, UT 80 km (50 mi) N of here earthquakes near Cache 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 18 km NNW of Taylor, Wyoming
  2. 2.8 18 km NNW of Taylor, Wyoming
  3. 2.2 southern Idaho
  4. 1.7 16 km W of Paris, Idaho
  5. 1.6 12 km WNW of Fairview, Wyoming
  6. 1.8 7 km NW of Georgetown, Idaho
  7. 1.6 1 km SSE of Bancroft, Idaho
  8. 1.9 5 km E of Bancroft, Idaho
  9. 1.6 11 km ESE of Soda Springs, Idaho
  10. 1.6 southern Idaho
  11. 1.5 southern Idaho
  12. 1.7 19 km WSW of Fairview, Wyoming
  13. 1.7 8 km ESE of Grace, Idaho
  14. 2.3 10 km E of Soda Springs, Idaho
  15. 1.9 14 km NE 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 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.