QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

Earthquake near Logan, UT

No earthquake was likely felt in Logan in the 24 hours to 11:14 pm MST (06:14 UTC). The last one was M 2.6, 16 km (10 mi) ESE, at 6:52 am MDT on 25 June 2026, estimated intensity II (weak) in town; 19 felt reports to USGS. Every earthquake near Logan

This page: a magnitude 2.6 earthquake was recorded 18 km (11 mi) north-northwest of Logan, UT, at 3:09 pm MST on 23 December 2022 (22:09 UTC), 8.0 km deep. 24 people have reported feeling it to USGS.

USGS: 3 km SSE of Trenton, Utah

18 km (11 mi) NNW of Logan, UT · 123 km (77 mi) N of Salt Lake City, UT

3:09 pm MST, Dec 23, 2022 · · 8.0 km deep · released about 280 lb of TNT

10 km30 km60 km120 km N Cache County 23 kmFranklin County 33 kmOneida County 59 kmRich County 64 kmBear Lake County 67 kmWeber County 68 kmMorgan County 93 kmBannock County 93 kmDavis 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
3:09 pm MST on 23 December 2022 ()
Where
18 km (11 mi) north-northwest of Logan, UT · earthquakes near Logan
Magnitude
M 2.6 (ml)
Depth
8.0 km below the surface
Felt
24 reports · strongest reported intensity III
Nearest
Cache County, 23 km SE
Nearest mapped fault
East Cache 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 1352 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 23 km (14 mi) from the epicentre. In Logan, 18 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: North Logan 17 km, intensity II · Logan 18 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 280 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 55,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 39,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.5× the energy of this one
  4. This earthquake M 2.6 about 280 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. 5.8 8 km W of Garden City, Utah · 37 km E of this epicentre
  2. 5.2 16 km ENE of North Logan, Utah · 28 km ESE of this epicentre
  3. 5.0 2 km S of Richmond, Utah · 10 km E 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 41.8842, -111.9327. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Cache County, UT 23 km (14 mi) SE earthquakes near Cache County
Franklin County, ID 33 km (21 mi) NNE earthquakes near Franklin County
Oneida County, ID 59 km (37 mi) NW earthquakes near Oneida County
Rich County, UT 64 km (40 mi) ESE earthquakes near Rich County
Bear Lake County, ID 67 km (42 mi) NE earthquakes near Bear Lake County
Weber County, UT 68 km (43 mi) S earthquakes near Weber 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. 1.9 6 km WSW of Clifton, Idaho
  2. 2.4 6 km SW of Clifton, Idaho
  3. 2.5 8 km SW of Clifton, Idaho
  4. 2.2 7 km SW of Clifton, Idaho
  5. 1.9 7 km SW of Clifton, Idaho
  6. 2.8 7 km SW of Clifton, Idaho
  7. 2.3 7 km WSW of Clifton, Idaho
  8. 2.0 7 km SW of Clifton, Idaho
  9. 1.9 8 km WSW of Clifton, Idaho
  10. 1.5 9 km WSW of Clifton, Idaho
  11. 1.6 7 km WSW of Thatcher, Utah
  12. 1.9 10 km E of Franklin, Idaho
  13. 1.9 15 km WSW of Bloomington, Idaho
  14. 1.7 8 km ENE of Howell, Utah
  15. 1.7 3 km ESE of Honeyville, 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.