QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

4 km NW of Silver Summit, Utah

· 14 km deep · released about 6.2 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Salt Lake County 35 kmMorgan County 37 kmSummit County 49 kmWasatch County 57 kmWeber County 64 kmDavis County 64 kmUtah County 72 kmRich County 99 kmUinta County 100 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
14 km below the surface
Felt
no reports yet
Nearest
Salt Lake County, 35 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1181 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 6.2 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 2,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.5 about 6.2 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 40.7625, -111.5278. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Salt Lake County, UT 35 km (22 mi) ENE of here earthquakes near Salt Lake County
Morgan County, UT 37 km (23 mi) S of here earthquakes near Morgan County
Summit County, UT 49 km (30 mi) WSW of here earthquakes near Summit County
Wasatch County, UT 57 km (35 mi) NNW of here earthquakes near Wasatch County
Weber County, UT 64 km (40 mi) SSE of here earthquakes near Weber County
Davis County, UT 64 km (40 mi) ESE of here earthquakes near Davis County

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

Aftershocks so far

45 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. 1.8 6 km ESE of Daniel, Utah
  7. 1.8 13 km ESE of Centerville, Utah
  8. 1.7 4 km WNW of Silver Summit, Utah
  9. 1.6 14 km NE of Enterprise, Utah
  10. 1.8 3 km WSW of Bluffdale, Utah
  11. 1.6 7 km SSE of Wallsburg, Utah
  12. 1.5 9 km S of Morgan, Utah
  13. 1.6 9 km S of Morgan, Utah
  14. 2.3 6 km SSW of Wallsburg, Utah
  15. 1.8 1 km SE 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 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.