QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

Earthquake near Providence, UT

USGS: 17 km E of Providence, Utah

20 km (13 mi) ESE of Logan, UT · 106 km (66 mi) NNE of Salt Lake City, UT

11:40 pm MDT, Aug 7, 2019 · · 7.5 km deep · released about 11 lb of TNT

10 km30 km60 km120 km N Cache County 12 kmRich County 31 kmWeber County 53 kmFranklin County 56 kmMorgan County 68 kmBear Lake County 69 kmDavis County 89 kmOneida County 93 kmLincoln County 96 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
11:40 pm MDT on 7 August 2019 ()
Where
18 km (11 mi) E of Providence, UT · earthquakes near Providence
Magnitude
M 1.7 (ml)
Depth
7.5 km below the surface
Felt
no reports yet
Nearest
Cache County, 12 km WNW
Nearest mapped fault
East Cache fault, 16 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 2612 days ago

A magnitude 1.7 earthquake was recorded 18 km (11 mi) E of Providence, UT, at 11:40 pm MDT on 7 August 2019 (05:40 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: River Heights, North Logan, Millville, Nibley, Logan, Hyde Park.

How big was it?

This earthquake released about 11 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 1,300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 930,000× the energy of this one
  3. Around the size people start to feel M 3.0 83× the energy of this one
  4. This earthquake M 1.7 about 11 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 4 earthquakes of M5 or more within 50 km:

  1. 5.8 8 km W of Garden City, Utah · 28 km NNE of this epicentre
  2. 5.5 26 km E of Avon, Utah · 24 km SSE of this epicentre
  3. 5.2 16 km ENE of North Logan, Utah · 12 km N of this epicentre
  4. 5.0 2 km S of Richmond, Utah · 28 km NW 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 41.7013, -111.6043. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Cache County, UT 12 km (8 mi) WNW earthquakes near Cache County
Rich County, UT 31 km (19 mi) ESE earthquakes near Rich County
Weber County, UT 53 km (33 mi) SSW earthquakes near Weber County
Franklin County, ID 56 km (35 mi) NNW earthquakes near Franklin County
Morgan County, UT 68 km (42 mi) S earthquakes near Morgan County
Bear Lake County, ID 69 km (43 mi) NNE earthquakes near Bear Lake 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. 1.7 13 km E of North Logan, Utah
  2. 1.6 4 km SE of Avon, Utah
  3. 1.6 12 km ENE of Paradise, Utah
  4. 1.8 14 km ESE of Richmond, Utah
  5. 1.9 3 km N of Amalga, Utah
  6. 1.5 16 km W of Garden, Utah
  7. 2.2 4 km E of Huntsville, Utah
  8. 1.9 4 km E of Huntsville, Utah
  9. 1.7 12 km ESE of Millville, Utah
  10. 1.7 10 km WSW of Garden, Utah
  11. 2.3 10 km WSW of Garden, Utah
  12. 1.6 10 km WSW of Garden, Utah
  13. 1.6 10 km WSW of Garden, Utah
  14. 1.5 3 km ENE of Huntsville, Utah
  15. 1.6 12 km ENE of Avon, 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.