QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

Earthquake near Morgan, UT

USGS: 1 km N of Morgan, Utah

37 km (23 mi) NE of Salt Lake City, UT · 24 km (15 mi) E of Layton, UT

6:01 pm MDT, Jul 18, 2017 · · 8.6 km deep · released about 9.6 lb of TNT

Every earthquake near Morgan Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Morgan County 10 kmWeber County 29 kmDavis County 44 kmSalt Lake County 47 kmSummit County 63 kmRich County 74 kmCache County 76 kmWasatch County 91 kmUinta County 97 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
6:01 pm MDT on 18 July 2017 ()
Where
in Morgan, UT · earthquakes near Morgan
Magnitude
M 1.7 (ml)
Depth
8.6 km below the surface
Felt
no reports yet
Nearest
Morgan County, 10 km ENE
Nearest mapped fault
Morgan fault, under 1 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 3362 days ago

A magnitude 1.7 earthquake was recorded in Morgan, UT, at 6:01 pm MDT on 18 July 2017 (00:01 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Mountain Green, Fruit Heights, Farmington, Kaysville, Centerville, South Weber.

How big was it?

This earthquake released about 9.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 99× the energy of this one
  4. This earthquake M 1.7 about 9.6 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:

  1. 5.3 Near Salt Lake City, Utah · 40 km SSW of this epicentre

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 41.0510, -111.6800. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Morgan County, UT 10 km (6 mi) ENE earthquakes near Morgan County
Weber County, UT 29 km (18 mi) NW earthquakes near Weber County
Davis County, UT 44 km (27 mi) W earthquakes near Davis County
Salt Lake County, UT 47 km (29 mi) SSW earthquakes near Salt Lake County
Summit County, UT 63 km (39 mi) ESE earthquakes near Summit County
Rich County, UT 74 km (46 mi) NNE earthquakes near Rich County

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

Aftershocks so far

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

  1. 3.6 4 km N of Magna, Utah
  2. 3.7 6 km NE of Magna, Utah
  3. 2.2 6 km NNE of Magna, Utah
  4. 2.4 6 km NNE of Magna, Utah
  5. 3.2 5 km NE of Magna, Utah
  6. 3.4 6 km NNE of Magna, Utah
  7. 3.1 6 km NNE of Magna, Utah
  8. 3.4 6 km NE of Magna, Utah
  9. 3.7 6 km NE of Magna, Utah
  10. 3.7 6 km NE of Magna, Utah
  11. 2.8 4 km NNE of Magna, Utah
  12. 2.2 7 km N of Magna, Utah
  13. 3.0 6 km N of Magna, Utah
  14. 3.2 5 km NNE of Magna, Utah
  15. 3.7 5 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.