QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

7 km W of North Salt Lake, UT

Yes. A magnitude 2.2 earthquake was recorded 7 km W of North Salt Lake, UT, 10 km (6 mi) NNW of Salt Lake City, UT, at 11:31 am MDT on 6 April 2020 (17:31 UTC), 5.2 km deep. 11 people have reported feeling it to USGS.

10 km (6 mi) NNW of Salt Lake City, UT

· 5.2 km deep · released about 54 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Salt Lake County 21 kmDavis County 27 kmMorgan County 44 kmWeber County 48 kmUtah County 86 kmSummit County 86 kmWasatch County 91 kmCache County 101 kmTooele County 104 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 2.2 (ml)
Depth
5.2 km below the surface
Felt
11 reports · strongest reported intensity III
Nearest
Salt Lake County, 21 km SSE
Nearest mapped fault
Wasatch fault, 7 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2187 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth, people at rest would likely notice it out to about 17 km (11 mi) from the epicentre. Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Likely felt in: Bountiful 10 km, intensity II · Salt Lake City 13 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 54 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 280,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 200,000× the energy of this one
  3. Around the size people start to feel M 3.0 18× the energy of this one
  4. This earthquake M 2.2 about 54 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.

For this area

The largest earthquake within 50 km in our catalogue was M 5.7 on 2020-03-18 — about 200,000 times the energy of this one.

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 40.8495, -111.9930. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Salt Lake County, UT 21 km (13 mi) SSE earthquakes near Salt Lake County
Davis County, UT 27 km (17 mi) NW earthquakes near Davis County
Morgan County, UT 44 km (27 mi) NE earthquakes near Morgan County
Weber County, UT 48 km (30 mi) NNE earthquakes near Weber County
Utah County, UT 86 km (53 mi) SSE earthquakes near Utah County
Summit County, UT 86 km (54 mi) E earthquakes near Summit County

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

Aftershocks so far

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

  1. 2.4 4 km NE of Magna, Utah
  2. 1.8 5 km NE of Magna, Utah
  3. 1.8 5 km ENE of Magna, Utah
  4. 1.9 5 km NNW of West Valley City, Utah
  5. 1.8 4 km NE of Magna, Utah
  6. 1.5 5 km NE of Magna, Utah
  7. 1.8 9 km NNE of Magna, Utah
  8. 1.5 3 km S of Bluffdale, Utah
  9. 1.5 6 km NE of Magna, Utah
  10. 1.5 3 km NE of Magna, Utah
  11. 1.6 6 km NNE of Magna, Utah
  12. 1.6 6 km NNE of Magna, Utah
  13. 1.5 6 km NNE of Magna, Utah
  14. 1.9 6 km NNE of Magna, Utah
  15. 2.4 6 km NNE of Magna, 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.