QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

11 km NNW of Howell, Utah

· 5.2 km deep · released about 38 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Oneida County 32 kmBox Elder County 56 kmFranklin County 63 kmCache County 64 kmWeber County 86 kmBannock County 91 kmPower County 94 kmDavis County 98 kmCassia County 103 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 2.1 (ml)
Depth
5.2 km below the surface
Felt
no reports yet
Nearest
Oneida County, 32 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 496 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 38 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 390,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 280,000× the energy of this one
  3. Around the size people start to feel M 3.0 25× the energy of this one
  4. This earthquake M 2.1 about 38 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 41.8937, -112.4895. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Oneida County, ID 32 km (20 mi) S of here earthquakes near Oneida County
Box Elder County, UT 56 km (35 mi) ENE of here earthquakes near Box Elder County
Franklin County, ID 63 km (39 mi) WSW of here earthquakes near Franklin County
Cache County, UT 64 km (40 mi) WNW of here earthquakes near Cache County
Weber County, UT 86 km (53 mi) NW of here earthquakes near Weber County
Bannock County, ID 91 km (57 mi) SSW of here earthquakes near Bannock County

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

Aftershocks so far

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

  1. 2.1 15 km WNW of Howell, Utah
  2. 1.8 1 km SE of Cornish, Utah
  3. 1.7 1 km SE of Cornish, Utah
  4. 2.0 12 km NNE of Howell, Utah
  5. 1.7 30 km SSW of Snowville, Utah
  6. 2.5 25 km NNW of Snowville, Utah
  7. 2.3 26 km NNW of Snowville, Utah
  8. 1.6 2 km E of Malad City, Idaho
  9. 2.0 2 km ESE of Malad City, Idaho
  10. 1.7 4 km NE of Malad City, Idaho
  11. 2.4 2 km E of Malad City, Idaho
  12. 1.5 3 km ENE of Malad City, Idaho
  13. 1.6 3 km E of Malad City, Idaho
  14. 2.6 2 km ESE of Malad City, Idaho
  15. 1.8 2 km ESE of Malad City, 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 4.4 on 2024-05-05 — it released about 2,800 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.