QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

Earthquake near North Logan, UT

No earthquake was likely felt in North Logan in the 24 hours to 3:55 pm MST (22:55 UTC). The last one was M 2.6, 16 km (10 mi) SE, at 6:52 am MDT on 25 June 2026, estimated intensity II (weak) in town; 19 felt reports to USGS. Every earthquake near North Logan

This page: a magnitude 1.6 earthquake was recorded 7 km (4 mi) east-southeast of North Logan, UT, at 2:10 pm MST on 3 March 2023 (21:10 UTC), 12 km deep.

USGS: 7 km ESE of North Logan, Utah

9 km (6 mi) E of Logan, UT · 108 km (67 mi) N of Salt Lake City, UT

2:10 pm MST, Mar 3, 2023 · · 12 km deep · released about 7.3 lb of TNT

10 km30 km60 km120 km N Cache County 2 kmRich County 42 kmFranklin County 49 kmWeber County 54 kmBear Lake County 69 kmMorgan County 73 kmOneida County 82 kmDavis County 88 kmLincoln County 102 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
2:10 pm MST on 3 March 2023 ()
Where
7 km (4 mi) east-southeast of North Logan, UT · earthquakes near North Logan
Magnitude
M 1.6 (ml)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Cache County, 2 km WSW
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 1349 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth it was probably too small to be felt, even directly above it. In North Logan, 7 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: River Heights, Providence, Logan, Hyde Park, Millville, Nibley.

How big was it?

This earthquake released about 7.3 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.

  1. Mineral, Virginia 2011 M 5.8 2,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,500,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.3 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. 5.8 8 km W of Garden City, Utah · 29 km NE of this epicentre
  2. 5.5 26 km E of Avon, Utah · 33 km SE of this epicentre
  3. 5.2 16 km ENE of North Logan, Utah · 12 km NE of this epicentre
  4. 5.0 2 km S of Richmond, Utah · 19 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 41.7402, -111.7283. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Cache County, UT 2 km (1 mi) WSW earthquakes near Cache County
Rich County, UT 42 km (26 mi) ESE earthquakes near Rich County
Franklin County, ID 49 km (30 mi) N earthquakes near Franklin County
Weber County, UT 54 km (33 mi) SSW earthquakes near Weber County
Bear Lake County, ID 69 km (43 mi) NNE earthquakes near Bear Lake County
Morgan County, UT 73 km (46 mi) S earthquakes near Morgan County

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

Aftershocks so far

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

  1. 2.3 12 km SW of Saint Charles, Idaho
  2. 1.5 17 km W of Bloomington, Idaho
  3. 1.7 9 km ENE of Avon, Utah
  4. 2.0 8 km ENE of Paradise, Utah
  5. 1.8 12 km ENE of Wolf Creek, Utah
  6. 2.9 6 km E of Avon, Utah
  7. 1.6 5 km ESE of Millville, Utah
  8. 1.8 12 km ESE of Millville, Utah
  9. 1.8 7 km SW of Saint Charles, Idaho
  10. 1.5 6 km E of Avon, Utah
  11. 1.6 10 km WSW of Perry, Utah
  12. 2.1 12 km E of Providence, Utah
  13. 2.2 12 km ENE of Paradise, Utah
  14. 1.7 9 km E of Cove, Utah
  15. 1.6 6 km ESE of Providence, 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.