QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

18 km NNW of Magna, Utah

· 3.0 km deep · released about 14 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Davis County 20 kmSalt Lake County 31 kmWeber County 53 kmMorgan County 58 kmTooele County 90 kmUtah County 93 kmSummit County 103 kmCache County 104 kmWasatch County 105 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 1.8 (ml)
Depth
3.0 km below the surface
Felt
no reports yet
Nearest
Davis County, 20 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1866 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 14 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 760,000× the energy of this one
  3. Around the size people start to feel M 3.0 68× the energy of this one
  4. This earthquake M 1.8 about 14 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 40.8588, -112.1903. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Davis County, UT 20 km (12 mi) S of here earthquakes near Davis County
Salt Lake County, UT 31 km (19 mi) NW of here earthquakes near Salt Lake County
Weber County, UT 53 km (33 mi) SSW of here earthquakes near Weber County
Morgan County, UT 58 km (36 mi) WSW of here earthquakes near Morgan County
Tooele County, UT 90 km (56 mi) ENE of here earthquakes near Tooele County
Utah County, UT 93 km (58 mi) NNW of here earthquakes near Utah County

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

Aftershocks so far

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

  1. 1.6 5 km NE of Magna, Utah
  2. 1.8 13 km ESE of Centerville, Utah
  3. 1.8 3 km WSW of Bluffdale, Utah
  4. 1.5 9 km S of Morgan, Utah
  5. 1.6 9 km S of Morgan, Utah
  6. 1.8 1 km SE of Bluffdale, Utah
  7. 1.7 3 km ENE of Magna, Utah
  8. 1.6 2 km SE of North Salt Lake, Utah
  9. 1.5 6 km NE of Magna, Utah
  10. 2.6 15 km NNW of Summit Park, Utah
  11. 1.7 5 km ENE of Magna, Utah
  12. 2.5 5 km ENE of Magna, Utah
  13. 2.3 3 km S of Bluffdale, Utah
  14. 1.6 3 km S of Bluffdale, Utah
  15. 1.5 3 km S of Bluffdale, 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 760,000 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.