QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0ml

Earthquake near Perry, UT

No earthquake was likely felt in Perry in the 24 hours to 8:13 pm MST (03:13 UTC). The last one was M 4.7, 115 km (71 mi) ESE, at 7:49 am MST on 22 January 2026, estimated intensity II (weak) in town; 4,305 felt reports to USGS. Every earthquake near Perry

This page: a magnitude 2.0 earthquake was recorded 9 km (5 mi) west of Perry, UT, at 6:31 am MDT on 24 October 2017 (12:31 UTC), less than 1 km deep.

USGS: 8 km W of Perry, Utah

79 km (49 mi) NNW of Salt Lake City, UT · 30 km (19 mi) NNW of Ogden, UT

6:31 am MDT, Oct 24, 2017 · · 0.8 km deep · released about 27 lb of TNT

10 km30 km60 km120 km N Weber County 31 kmCache County 44 kmDavis County 48 kmMorgan County 63 kmRich County 77 kmBox Elder County 79 kmFranklin County 82 kmOneida County 85 kmSalt Lake County 91 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
6:31 am MDT on 24 October 2017 ()
Where
9 km (5 mi) west of Perry, UT · earthquakes near Perry
Magnitude
M 2.0 (ml)
Depth
0.8 km below the surface
Felt
no reports yet
Nearest
Weber County, 31 km SE
Nearest mapped fault
Wasatch fault, 10 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 3306 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 16 km (10 mi) from the epicentre. In Perry, 9 km away, the estimate is intensity II (weak). 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: Brigham City 11 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 27 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 560,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 390,000× the energy of this one
  3. Around the size people start to feel M 3.0 35× the energy of this one
  4. This earthquake M 2.0 about 27 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. 5.9 35 km SSW of Howell, Utah · 46 km W of this epicentre
  2. 5.2 27 km SW of Thatcher, Utah · 30 km W of this epicentre
  3. 5.1 27 km SW of Thatcher, Utah · 30 km W of this epicentre
  4. 5.1 27 km SW of Thatcher, Utah · 30 km W 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 41.4710, -112.1377. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Weber County, UT 31 km (19 mi) SE earthquakes near Weber County
Cache County, UT 44 km (27 mi) NE earthquakes near Cache County
Davis County, UT 48 km (30 mi) S earthquakes near Davis County
Morgan County, UT 63 km (39 mi) SE earthquakes near Morgan County
Rich County, UT 77 km (48 mi) ENE earthquakes near Rich County
Box Elder County, UT 79 km (49 mi) WNW earthquakes near Box Elder County

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

Aftershocks so far

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

  1. 1.8 13 km WSW of Thatcher, Utah
  2. 1.6 20 km WSW of Corinne, Utah
  3. 3.1 7 km E of Howell, UT
  4. 1.7 7 km E of Avon, Utah
  5. 1.7 6 km E of Avon, Utah
  6. 1.8 20 km WSW of Corinne, Utah
  7. 1.9 20 km WSW of Corinne, Utah
  8. 2.5 6 km WSW of Corinne, Utah
  9. 2.2 5 km ENE of Howell, Utah
  10. 1.7 20 km WSW of Corinne, Utah
  11. 2.5 20 km WSW of Corinne, Utah
  12. 1.8 13 km E of Millville, Utah
  13. 1.7 4 km ENE of Howell, Utah
  14. 1.6 4 km NE of Howell, Utah
  15. 1.9 17 km W of Corinne, 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.