QuakeIndex

Earthquake · reviewed by a seismologist

M 4.1mwr

12 km NNW of Georgetown, Idaho

· 5.8 km deep · released about 21 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Caribou County 25 kmBear Lake County 34 kmFranklin County 57 kmBannock County 68 kmLincoln County 72 kmBonneville County 92 kmCache County 98 kmOneida County 101 kmBingham 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 4.1 (mwr)
Depth
5.8 km below the surface
Felt
10 reports · strongest reported intensity III
Measured shaking
intensity IV (ShakeMap)
USGS impact alert
green
Nearest
Caribou County, 25 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3216 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 10 people have reported feeling it to USGS.

How big was it?

This earthquake released about 21 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 7,900× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 350× the energy of this one
  3. Magna, Utah 2020 M 5.7 250× the energy of this one
  4. This earthquake M 4.1 about 21 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 45× 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 42.5849, -111.4169. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Caribou County, ID 25 km (15 mi) SSE of here earthquakes near Caribou County
Bear Lake County, ID 34 km (21 mi) NNW of here earthquakes near Bear Lake County
Franklin County, ID 57 km (35 mi) NE of here earthquakes near Franklin County
Bannock County, ID 68 km (42 mi) E of here earthquakes near Bannock County
Lincoln County, WY 72 km (45 mi) WNW of here earthquakes near Lincoln County
Bonneville County, ID 92 km (57 mi) S of here earthquakes near Bonneville 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 E of Soda Springs, Idaho
  2. 2.2 9 km NNW of Georgetown, Idaho
  3. 2.7 8 km NNW of Georgetown, Idaho
  4. 2.8 9 km NNW of Georgetown, Idaho
  5. 2.6 11 km NNW of Georgetown, Idaho
  6. 3.5 10 km N of Georgetown, Idaho
  7. 2.1 11 km NNW of Georgetown, Idaho
  8. 2.5 11 km NNW of Georgetown, Idaho
  9. 3.9 11 km NNW of Georgetown, Idaho
  10. 3.1 11 km NNW of Georgetown, Idaho
  11. 2.4 10 km NNW of Georgetown, Idaho
  12. 2.1 9 km NNW of Georgetown, Idaho
  13. 2.1 10 km NNW of Georgetown, Idaho
  14. 2.3 14 km ESE of Soda Springs, Idaho
  15. 1.9 9 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 63 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.