QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

Earthquake near Ogden, UT

No earthquake was likely felt in Ogden in the 24 hours to 3:55 pm MST (22:55 UTC). The last one was M 3.5, 56 km (35 mi) S, at 6:32 pm MST on 13 February 2026, estimated intensity II (weak) in town; 4,122 felt reports to USGS. Every earthquake near Ogden

This page: a magnitude 1.9 earthquake was recorded 38 km (23 mi) northeast of Ogden, UT, at 12:32 am MDT on 29 May 2023 (06:32 UTC), 9.5 km deep.

USGS: 10 km ESE of Avon, Utah

82 km (51 mi) NNE of Salt Lake City, UT · 30 km (19 mi) SSE of Logan, UT

12:32 am MDT, May 29, 2023 · · 9.5 km deep · released about 19 lb of TNT

10 km30 km60 km120 km N Cache County 27 kmWeber County 29 kmRich County 41 kmMorgan County 46 kmDavis County 66 kmFranklin County 76 kmSummit County 92 kmBear Lake County 93 kmSalt Lake County 94 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
12:32 am MDT on 29 May 2023 ()
Where
38 km (23 mi) northeast of Ogden, UT · earthquakes near Ogden
Magnitude
M 1.9 (ml)
Depth
9.5 km below the surface
Felt
no reports yet
Nearest
Cache County, 27 km N
Nearest mapped fault
East Cache fault, 6 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 1261 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 11 km (7 mi) from the epicentre. In Ogden, 38 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.

Earthquakes near other towns within 30 km: Hyrum, Wolf Creek, Liberty, Nibley, Millville, Wellsville.

How big was it?

This earthquake released about 19 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 810,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 580,000× the energy of this one
  3. Around the size people start to feel M 3.0 51× the energy of this one
  4. This earthquake M 1.9 about 19 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 3 earthquakes of M5 or more within 50 km:

  1. 5.5 26 km E of Avon, Utah · 17 km E of this epicentre
  2. 5.2 16 km ENE of North Logan, Utah · 36 km NNE of this epicentre
  3. 5.0 2 km S of Richmond, Utah · 46 km NNW 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 41.4922, -111.7003. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Cache County, UT 27 km (17 mi) N earthquakes near Cache County
Weber County, UT 29 km (18 mi) SSW earthquakes near Weber County
Rich County, UT 41 km (26 mi) ENE earthquakes near Rich County
Morgan County, UT 46 km (28 mi) SSE earthquakes near Morgan County
Davis County, UT 66 km (41 mi) SW earthquakes near Davis County
Franklin County, ID 76 km (48 mi) N earthquakes near Franklin County

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

Aftershocks so far

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

  1. 1.0 4 km ENE of Huntsville, Utah
  2. 0.8 9 km W of Garden, Utah
  3. 1.6 17 km E of North Logan, Utah
  4. 1.7 8 km SSW of Randolph, Utah
  5. 2.1 8 km SSW of Randolph, Utah
  6. 1.9 14 km ENE of Huntsville, Utah
  7. 1.6 15 km E of Providence, Utah
  8. 1.6 13 km ESE of Millville, Utah
  9. 1.9 16 km E of Providence, Utah
  10. 2.0 12 km E of Millville, Utah
  11. 2.6 12 km E of Millville, Utah
  12. 2.0 10 km W of Garden, Utah
  13. 2.0 Utah
  14. 1.5 9 km ENE of Avon, Utah
  15. 2.1 3 km WNW of Huntsville, 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.