QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

Earthquake near Mountain Green, UT

No earthquake was likely felt in Mountain Green in the 24 hours to 9:18 pm MST (04:18 UTC). The last one was M 3.5, 51 km (31 mi) SSW, at 6:32 pm MST on 13 February 2026, estimated intensity II (weak) in town; 4,122 felt reports to USGS. Every earthquake near Mountain Green

This page: a magnitude 1.5 earthquake was recorded 10 km (6 mi) east-northeast of Mountain Green, UT, at 9:21 pm MDT on 7 May 2026 (03:21 UTC), 10 km deep.

USGS: 10 km ENE of Mountain Green, Utah

50 km (31 mi) NNE of Salt Lake City, UT · 24 km (15 mi) E of Ogden, UT

9:21 pm MDT, May 7, 2026 · · 10 km deep · released about 6.2 lb of TNT

Every earthquake near Mountain Green Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Morgan County 14 kmWeber County 18 kmDavis County 46 kmSalt Lake County 61 kmCache County 61 kmRich County 62 kmSummit County 70 kmUinta County 95 kmWasatch County 105 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
9:21 pm MDT on 7 May 2026 ()
Where
10 km (6 mi) east-northeast of Mountain Green, UT · earthquakes near Mountain Green
Magnitude
M 1.5 (ml)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Morgan County, 14 km SE
Nearest mapped fault
Morgan 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 189 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 2 km (1 mi) from the epicentre. In Mountain Green, 10 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: Morgan, Wolf Creek, Uintah, South Weber, Liberty, South Ogden.

How big was it?

This earthquake released about 6.2 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.5 about 6.2 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 one earthquake of M5 or more within 50 km:

  1. 5.5 26 km E of Avon, Utah · 38 km NNE 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 41.1863, -111.6868. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Morgan County, UT 14 km (9 mi) SE earthquakes near Morgan County
Weber County, UT 18 km (11 mi) WNW earthquakes near Weber County
Davis County, UT 46 km (29 mi) WSW earthquakes near Davis County
Salt Lake County, UT 61 km (38 mi) SSW earthquakes near Salt Lake County
Cache County, UT 61 km (38 mi) N earthquakes near Cache County
Rich County, UT 62 km (38 mi) NE earthquakes near Rich County

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

Aftershocks so far

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

  1. 1.1 12 km ESE of Bountiful, Utah
  2. 1.1 4 km ENE of Morgan, Utah
  3. 0.8 14 km NNW of Henefer, Utah
  4. 1.9 12 km N of Summit Park, Utah
  5. 0.8 14 km N of Summit Park, Utah
  6. 0.7 0 km ENE of Summit Park, Utah
  7. 1.3 1 km ESE of Summit Park, Utah
  8. 2.4 1 km ENE of Summit Park, Utah
  9. 1.2 14 km N of Summit Park, Utah
  10. 1.0 4 km ENE of Huntsville, Utah
  11. 1.6 2 km ENE of Summit Park, Utah
  12. 1.9 14 km ENE of Huntsville, Utah
  13. 1.6 13 km ESE of Millville, Utah
  14. 2.1 5 km NW of Summit Park, Utah
  15. 1.5 9 km ENE of Avon, 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.