QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9ml

13 km SSE of Morgan, Utah

· 6.7 km deep · released about 630 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Morgan County 19 kmSalt Lake County 38 kmWeber County 44 kmDavis County 50 kmSummit County 55 kmWasatch County 76 kmRich County 84 kmUtah County 90 kmCache County 91 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
6.7 km below the surface
Felt
73 reports · strongest reported intensity IV
Nearest
Morgan County, 19 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1271 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 73 people have reported feeling it to USGS.

How big was it?

This earthquake released about 630 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 24,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 17,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.5× the energy of this one
  4. This earthquake M 2.9 about 630 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 40.9252, -111.6248. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Morgan County, UT 19 km (12 mi) SSW of here earthquakes near Morgan County
Salt Lake County, UT 38 km (24 mi) NE of here earthquakes near Salt Lake County
Weber County, UT 44 km (27 mi) SSE of here earthquakes near Weber County
Davis County, UT 50 km (31 mi) ESE of here earthquakes near Davis County
Summit County, UT 55 km (34 mi) W of here earthquakes near Summit County
Wasatch County, UT 76 km (47 mi) NNW of here earthquakes near Wasatch County

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

Aftershocks so far

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

  1. 1.6 18 km N of Henefer, Utah
  2. 2.0 4 km NNW of West Valley City, Utah
  3. 1.7 2 km ESE of Echo, Utah
  4. 3.5 4 km NNW of West Valley City, Utah
  5. 1.6 5 km NE of Magna, Utah
  6. 3.3 13 km E of Huntsville, Utah
  7. 1.8 13 km ESE of Centerville, Utah
  8. 1.7 4 km WNW of Silver Summit, Utah
  9. 1.9 7 km NE of Huntsville, Utah
  10. 1.5 7 km NE of Huntsville, Utah
  11. 1.6 14 km NE of Enterprise, Utah
  12. 1.5 9 km S of Morgan, Utah
  13. 1.6 9 km S of Morgan, Utah
  14. 1.7 3 km ENE of Magna, Utah
  15. 1.6 2 km SE of North Salt Lake, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 5.7 on 2020-03-18 — it released about 17,000 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.