Earthquake · reviewed by a seismologist
M 1.6ml
Earthquake near Logan, UT
No earthquake was likely felt in Logan in the 24 hours to 10:20 pm MST (05:20 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 1.6 earthquake was recorded 28 km (18 mi) south-southeast of Logan, UT, at 1:23 am MST on 14 December 2023 (08:23 UTC), 10 km deep.
USGS: 9 km ESE of Avon, Utah
83 km (51 mi) NNE of Salt Lake City, UT · 29 km (18 mi) SSE of Logan, UT
- When
- 1:23 am MST on 14 December 2023 ()
- Where
- 28 km (18 mi) south-southeast of Logan, UT · earthquakes near Logan
- Magnitude
- M 1.6 (ml)
- Depth
- 10 km below the surface
- Felt
- no reports yet
- Nearest
- Cache County, 26 km N
- Nearest mapped fault
- East Cache fault, 5 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 1064 days ago
Earthquake alerts for Logan, UT
Get a notification in this browser when USGS records an earthquake near Logan, UT. No account or email needed.
Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
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 4 km (2 mi) from the epicentre. In Logan, 28 km away, the estimate is intensity I (not felt). 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, Nibley, Millville, Liberty, Wellsville.
How big was it?
This earthquake released about 7.1 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 2,100,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,500,000× the energy of this one
- Around the size people start to feel M 3.0 130× the energy of this one
- This earthquake M 1.6 about 7.1 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:
- 5.5 26 km E of Avon, Utah · 17 km E of this epicentre
- 5.2 16 km ENE of North Logan, Utah · 35 km NNE of this epicentre
- 5.0 2 km S of Richmond, Utah · 45 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 41.4995, -111.7075. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Cache County, UT | 26 km (16 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 | 47 km (29 mi) | SSE | earthquakes near Morgan County |
| Davis County, UT | 66 km (41 mi) | SW | earthquakes near Davis County |
| Franklin County, ID | 76 km (47 mi) | N | earthquakes near Franklin County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
48 earthquakes have been recorded within 50 km since this one.
- 0.8 14 km NNW of Henefer, Utah
- 2.1 13 km ENE of Hyde Park, Utah
- 2.0 14 km ESE of Providence, Utah
- 1.0 4 km ENE of Huntsville, Utah
- 0.8 9 km W of Garden, Utah
- 1.6 17 km E of North Logan, Utah
- 1.7 8 km SSW of Randolph, Utah
- 2.1 8 km SSW of Randolph, Utah
- 1.9 14 km ENE of Huntsville, Utah
- 1.6 15 km E of Providence, Utah
- 1.6 13 km ESE of Millville, Utah
- 1.9 16 km E of Providence, Utah
- 2.0 12 km E of Millville, Utah
- 2.6 12 km E of Millville, Utah
- 2.0 10 km W of Garden, 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.