QuakeIndex

Earthquake · reviewed by a seismologist

M 4.0ml

Earthquake near Duchesne, UT

No earthquake was likely felt in Duchesne in the 24 hours to 10:41 pm MST (05:41 UTC). The last one was M 4.7, 92 km (57 mi) NNW, at 7:49 am MST on 22 January 2026, estimated intensity II (weak) in town; 4,305 felt reports to USGS. Every earthquake near Duchesne

This page: a magnitude 4.0 earthquake was recorded 42 km (26 mi) north-northwest of Duchesne, UT, at 7:01 am MDT on 25 May 2016 (13:01 UTC), 16 km deep. 8 people have reported feeling it to USGS.

USGS: 15 km NNE of Tabiona, Utah

7:01 am MDT, May 25, 2016 · · 16 km deep · released about 17 tons of TNT

10 km30 km60 km120 km N Duchesne County 29 kmWasatch County 46 kmSummit County 50 kmUinta County 89 kmCarbon County 91 kmUtah County 95 kmMorgan County 103 kmUintah County 104 kmDaggett County 106 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
7:01 am MDT on 25 May 2016 ()
Where
42 km (26 mi) north-northwest of Duchesne, UT · earthquakes near Duchesne
Magnitude
M 4.0 (ml)
Depth
16 km below the surface
Felt
8 reports · strongest reported intensity IV
Measured shaking
intensity IV (ShakeMap)
USGS impact alert
green
Nearest
Duchesne County, 29 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1610 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon.

At this magnitude and depth, people at rest would likely notice it out to about 98 km (61 mi) from the epicentre. In Duchesne, 42 km away, the estimate is intensity III (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.

How big was it?

This earthquake released about 17 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 10,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 450× the energy of this one
  3. Magna, Utah 2020 M 5.7 320× the energy of this one
  4. This earthquake M 4.0 about 17 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 35× more

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

The largest earthquake within 50 km (31 mi) since our catalogue begins in 2016. No other earthquake of M4 or more has been recorded this close in that time.

Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:

  1. 5.3 23 km NW of Altamont, Utah · 13 km E of this epicentre
  2. 5.0 21 km NW of Altamont, Utah · 19 km E 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 40.4883, -110.6515. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Duchesne County, UT 29 km (18 mi) SE earthquakes near Duchesne County
Wasatch County, UT 46 km (29 mi) WSW earthquakes near Wasatch County
Summit County, UT 50 km (31 mi) NNW earthquakes near Summit County
Uinta County, WY 89 km (55 mi) N earthquakes near Uinta County
Carbon County, UT 91 km (56 mi) S earthquakes near Carbon County
Utah County, UT 95 km (59 mi) WSW earthquakes near Utah 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. 2.3 41 km SSE of Evanston, Wyoming
  2. 1.6 21 km W of Tabiona, Utah
  3. 1.6 8 km E of Independence, Utah
  4. 1.9 42 km SSE of Evanston, Wyoming
  5. 2.0 42 km SSE of Evanston, Wyoming
  6. 1.6 19 km E of Independence, Utah
  7. 2.3 19 km E of Independence, Utah
  8. 2.4 19 km E of Independence, Utah
  9. 1.9 20 km E of Independence, Utah
  10. 2.2 42 km SSE of Evanston, Wyoming
  11. 2.2 42 km SSE of Evanston, Wyoming
  12. 1.6 43 km NE of Samak, Utah
  13. 2.5 28 km NNW of Tabiona, Utah
  14. 2.1 42 km ENE of Oakley, Utah
  15. 2.7 41 km ENE of Oakley, 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.