QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

3 km WNW of Huntsville, Utah

· 14 km deep · released about 37 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Weber County 6 kmMorgan County 28 kmDavis County 42 kmCache County 52 kmRich County 62 kmSalt Lake County 68 kmSummit County 83 kmFranklin County 100 kmUinta 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 2.1 (ml)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Weber County, 6 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 135 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 37 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 5.8 410,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 290,000× the energy of this one
  3. Around the size people start to feel M 3.0 26× the energy of this one
  4. This earthquake M 2.1 about 37 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 41.2707, -111.8073. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Weber County, UT 6 km (4 mi) E of here earthquakes near Weber County
Morgan County, UT 28 km (17 mi) NW of here earthquakes near Morgan County
Davis County, UT 42 km (26 mi) NE of here earthquakes near Davis County
Cache County, UT 52 km (32 mi) S of here earthquakes near Cache County
Rich County, UT 62 km (38 mi) SW of here earthquakes near Rich County
Salt Lake County, UT 68 km (42 mi) N of here earthquakes near Salt Lake County

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

Aftershocks so far

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

  1. 1.9 14 km ENE of Huntsville, Utah
  2. 1.6 15 km E of Providence, Utah
  3. 1.6 13 km ESE of Millville, Utah
  4. 2.0 12 km E of Millville, Utah
  5. 2.6 12 km E of Millville, Utah
  6. 1.5 9 km ENE of Avon, Utah

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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.