QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

Earthquake near Snyderville, UT

No earthquake was likely felt in Snyderville in the 24 hours to 11:03 am MST (18:03 UTC). The last one was M 2.4, 7 km (5 mi) NNW, at 1:30 pm MDT on 17 October 2026, estimated intensity II (weak) in town; 6 felt reports to USGS. Every earthquake near Snyderville

This page: a magnitude 1.8 earthquake was recorded 2 km (2 mi) west-northwest of Snyderville, UT, at 8:12 am MDT on 29 August 2019 (14:12 UTC), 5.4 km deep.

USGS: 2 km WNW of Snyderville, Utah

32 km (20 mi) ESE of Salt Lake City, UT · 22 km (14 mi) E of Millcreek, UT

8:12 am MDT, Aug 29, 2019 · · 5.4 km deep · released about 14 lb of TNT

10 km30 km60 km120 km N Salt Lake County 30 kmMorgan County 43 kmWasatch County 54 kmSummit County 54 kmDavis County 65 kmUtah County 66 kmWeber County 68 kmRich County 106 kmUinta County 106 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
8:12 am MDT on 29 August 2019 ()
Where
2 km (2 mi) west-northwest of Snyderville, UT · earthquakes near Snyderville
Magnitude
M 1.8 (ml)
Depth
5.4 km below the surface
Felt
no reports yet
Nearest
Salt Lake County, 30 km W
Nearest mapped fault
Main Canyon fault, 12 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 2633 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 12 km (7 mi) from the epicentre. In Snyderville, 2 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: Summit Park 6 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 14 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 790,000× the energy of this one
  3. Around the size people start to feel M 3.0 70× the energy of this one
  4. This earthquake M 1.8 about 14 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 2 earthquakes of M5 or more within 50 km:

  1. 5.3 Near Salt Lake City, Utah · 19 km W of this epicentre
  2. 5.0 1 km NE of Magna, Utah · 44 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 40.7050, -111.5688. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Salt Lake County, UT 30 km (19 mi) W earthquakes near Salt Lake County
Morgan County, UT 43 km (27 mi) N earthquakes near Morgan County
Wasatch County, UT 54 km (33 mi) SE earthquakes near Wasatch County
Summit County, UT 54 km (33 mi) ENE earthquakes near Summit County
Davis County, UT 65 km (40 mi) NW earthquakes near Davis County
Utah County, UT 66 km (41 mi) S earthquakes near Utah County

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

Aftershocks so far

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

  1. 1.9 7 km NNE of Magna, Utah
  2. 2.3 1 km ESE of Magna, Utah
  3. 2.2 4 km NE of Magna, Utah
  4. 1.7 Utah
  5. 2.1 5 km NNE of Magna, Utah
  6. 2.1 6 km NNE of Magna, Utah
  7. 2.1 6 km NNE of Magna, Utah
  8. 3.1 1 km NE of Magna, Utah
  9. 1.9 5 km NE of Magna, Utah
  10. 2.2 5 km NE of Magna, Utah
  11. 2.2 3 km NE of Magna, Utah
  12. 1.8 6 km NNE of Magna, Utah
  13. 2.3 6 km NNE of Magna, Utah
  14. 2.0 6 km NE of Magna, Utah
  15. 2.2 3 km NE 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.