QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

Earthquake near Logan, UT

No earthquake was likely felt in Logan in the 24 hours to 4:36 pm MST (23:36 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 1.7 earthquake was recorded 41 km (26 mi) northeast of Logan, UT, at 3:32 pm MDT on 8 July 2025 (21:32 UTC), less than 1 km deep.

USGS: 8 km NW of Garden City, Utah

42 km (26 mi) NE of Logan, UT · 141 km (87 mi) NNE of Salt Lake City, UT

3:32 pm MDT, Jul 8, 2025 · · -1.5 km deep · released about 12 lb of TNT

10 km30 km60 km120 km N Bear Lake County 35 kmFranklin County 35 kmCache County 37 kmRich County 45 kmLincoln County 70 kmWeber County 87 kmCaribou County 88 kmOneida County 89 kmBannock County 99 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
3:32 pm MDT on 8 July 2025 ()
Where
41 km (26 mi) northeast of Logan, UT · earthquakes near Logan
Magnitude
M 1.7 (ml)
Depth
-1.5 km below the surface
Felt
no reports yet
Nearest
Bear Lake County, 35 km NNE
Nearest mapped fault
Western Bear Lake fault, 4 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 491 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 13 km (8 mi) from the epicentre. In Logan, 41 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: Richmond.

How big was it?

This earthquake released about 12 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 870,000× the energy of this one
  3. Around the size people start to feel M 3.0 78× the energy of this one
  4. This earthquake M 1.7 about 12 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 · 7 km SSW of this epicentre
  2. 5.2 16 km ENE of North Logan, Utah · 24 km SSW of this epicentre
  3. 5.0 2 km S of Richmond, Utah · 30 km WSW 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 41.9952, -111.4755. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Bear Lake County, ID 35 km (21 mi) NNE earthquakes near Bear Lake County
Franklin County, ID 35 km (22 mi) NW earthquakes near Franklin County
Cache County, UT 37 km (23 mi) SW earthquakes near Cache County
Rich County, UT 45 km (28 mi) SSE earthquakes near Rich County
Lincoln County, WY 70 km (44 mi) ENE earthquakes near Lincoln County
Weber County, UT 87 km (54 mi) SSW earthquakes near Weber County

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

Aftershocks so far

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

  1. 2.5 15 km SW of Georgetown, Idaho
  2. 2.1 13 km ENE of Hyde Park, Utah
  3. 2.3 8 km SW of Georgetown, Idaho
  4. 2.9 7 km W of Bennington, Idaho
  5. 2.0 14 km ESE of Providence, Utah
  6. 0.8 9 km W of Garden, Utah
  7. 1.8 1 km SE of Cornish, Utah
  8. 1.7 1 km SE of Cornish, Utah
  9. 1.9 6 km W of Bennington, Idaho
  10. 1.8 7 km WSW of Bennington, Idaho
  11. 1.6 17 km E of North Logan, Utah
  12. 1.7 8 km SSW of Randolph, Utah
  13. 2.1 8 km SSW of Randolph, Utah
  14. 2.2 7 km WNW of Bennington, Idaho
  15. 1.5 6 km WSW of Bennington, Idaho

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.