QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

Earthquake near Logan, UT

No earthquake was likely felt in Logan in the 24 hours to 4:48 pm MST (23:48 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 48 km (30 mi) west-northwest of Logan, UT, at 9:50 am MDT on 15 July 2022 (15:50 UTC), 4.3 km deep. 1 person has reported feeling it to USGS.

USGS: 12 km NNE of Howell, Utah

48 km (30 mi) WNW of Logan, UT · 130 km (81 mi) NNW of Salt Lake City, UT

9:50 am MDT, Jul 15, 2022 · · 4.3 km deep · released about 7.3 lb of TNT

Every earthquake near Logan Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Oneida County 34 kmCache County 55 kmFranklin County 55 kmBox Elder County 64 kmWeber County 81 kmBannock County 90 kmDavis County 96 kmPower County 97 kmBear Lake 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
9:50 am MDT on 15 July 2022 ()
Where
48 km (30 mi) west-northwest of Logan, UT · earthquakes near Logan
Magnitude
M 1.6 (md)
Depth
4.3 km below the surface
Felt
1 report
Nearest
Oneida County, 34 km NNW
Nearest mapped fault
North Promontory fault, 14 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 1580 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 10 km (6 mi) from the epicentre. In Logan, 48 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: Garland, Tremonton, Elwood.

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 8 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.6 The 1934 Hansel Valley, Utah Earthquake · 43 km SW of this epicentre
  2. 6.1 17 km NE of Snowville, Utah · 23 km NW of this epicentre
  3. 5.9 35 km SSW of Howell, Utah · 48 km SSW of this epicentre
  4. 5.6 Hansel Valley, Utah · 29 km WSW of this epicentre
  5. 5.2 27 km SW of Thatcher, Utah · 45 km SSW 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 41.8937, -112.3775. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Oneida County, ID 34 km (21 mi) NNW earthquakes near Oneida County
Cache County, UT 55 km (34 mi) ESE earthquakes near Cache County
Franklin County, ID 55 km (34 mi) NE earthquakes near Franklin County
Box Elder County, UT 64 km (40 mi) WSW earthquakes near Box Elder County
Weber County, UT 81 km (50 mi) SSE earthquakes near Weber County
Bannock County, ID 90 km (56 mi) N earthquakes near Bannock County

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

Aftershocks so far

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

  1. 1.6 Utah
  2. 2.3 7 km SW of Corinne, Utah
  3. 2.1 8 km SW of Corinne, Utah
  4. 2.9 Utah
  5. 2.9 8 km SW of Corinne, Utah
  6. 2.8 Utah
  7. 1.5 7 km SW of Corinne, Utah
  8. 1.7 Utah
  9. 2.5 2 km NNW of Benson, Utah
  10. 3.2 1 km NE of Benson, Utah
  11. 1.9 Utah
  12. 2.7 1 km NNE of Benson, Utah
  13. 1.8 1 km NNE of Benson, Utah
  14. 1.9 3 km NNW of Benson, Utah
  15. 2.8 2 km N of Benson, 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.