QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

5 km SW of American Fork, Utah

· 5.3 km deep · released about 5.7 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Utah County 28 kmSalt Lake County 38 kmWasatch County 57 kmDavis County 84 kmMorgan County 86 kmSummit County 94 kmWeber County 104 kmJuab County 107 kmSanpete County 109 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 1.5 (ml)
Depth
5.3 km below the surface
Felt
no reports yet
Nearest
Utah County, 28 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1253 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 5.7 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.7 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 40.3375, -111.8315. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Utah County, UT 28 km (17 mi) NNW of here earthquakes near Utah County
Salt Lake County, UT 38 km (23 mi) SSE of here earthquakes near Salt Lake County
Wasatch County, UT 57 km (35 mi) W of here earthquakes near Wasatch County
Davis County, UT 84 km (52 mi) SSE of here earthquakes near Davis County
Morgan County, UT 86 km (54 mi) SSW of here earthquakes near Morgan County
Summit County, UT 94 km (58 mi) SW of here earthquakes near Summit 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. 1.9 6 km WNW of Lehi, Utah
  2. 2.2 5 km WNW of Lehi, Utah
  3. 2.0 4 km NNW of West Valley City, Utah
  4. 3.5 4 km NNW of West Valley City, Utah
  5. 1.7 6 km WNW of Lehi, Utah
  6. 1.5 6 km NW of Saratoga Springs, Utah
  7. 2.0 7 km NNW of Saratoga Springs, Utah
  8. 3.5 6 km WNW of Lehi, Utah
  9. 1.7 6 km WNW of Lehi, Utah
  10. 1.6 5 km NE of Magna, Utah
  11. 1.8 6 km ESE of Daniel, Utah
  12. 2.0 7 km NNW of Saratoga Springs, Utah
  13. 1.6 6 km WNW of Lehi, Utah
  14. 1.6 7 km WNW of Lehi, Utah
  15. 2.8 6 km WNW of Independence, 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 4.6 on 2020-03-18 — it released about 38,000 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.