QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9ml

8 km NE of Enterprise, Utah

· 11 km deep · released about 680 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Morgan County 11 kmWeber County 21 kmDavis County 46 kmSalt Lake County 59 kmRich County 63 kmCache County 64 kmSummit County 68 kmUinta County 94 kmWasatch County 102 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 2.9 (ml)
Depth
11 km below the surface
Felt
43 reports · strongest reported intensity IV
Nearest
Morgan County, 11 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1905 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 43 people have reported feeling it to USGS.

How big was it?

This earthquake released about 680 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 22,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 16,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.4× the energy of this one
  4. This earthquake M 2.9 about 680 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 41.1642, -111.6747. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Morgan County, UT 11 km (7 mi) NW of here earthquakes near Morgan County
Weber County, UT 21 km (13 mi) SE of here earthquakes near Weber County
Davis County, UT 46 km (29 mi) ENE of here earthquakes near Davis County
Salt Lake County, UT 59 km (37 mi) NNE of here earthquakes near Salt Lake County
Rich County, UT 63 km (39 mi) SW of here earthquakes near Rich County
Cache County, UT 64 km (40 mi) S of here earthquakes near Cache County

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

Aftershocks so far

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

  1. 1.6 13 km NE of Henefer, Utah
  2. 1.9 5 km E of Huntsville, Utah
  3. 1.6 5 km E of Huntsville, Utah
  4. 1.7 13 km SE of Avon, Utah
  5. 1.6 10 km SE of Avon, Utah
  6. 1.6 12 km E of Huntsville, Utah
  7. 2.1 9 km E of Enterprise, Utah
  8. 2.5 15 km N of Summit Park, Utah
  9. 1.5 6 km ENE of Wolf Creek, Utah
  10. 1.7 8 km E of Enterprise, Utah
  11. 1.8 13 km NNW of Summit Park, Utah
  12. 1.6 4 km SE of Avon, Utah
  13. 1.9 2 km SSE of North Salt Lake, Utah
  14. 1.6 12 km ENE of Paradise, Utah
  15. 1.8 4 km NNW of Henefer, 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.