QuakeIndex

Earthquake · reviewed by a seismologist

M 4.1ml

Earthquake near Maeser, UT

No earthquake was likely felt in Maeser in the 24 hours to 10:19 pm MST (05:19 UTC). The last one was M 3.1, 25 km (15 mi) NNE, at 2:56 pm MDT on 29 July 2026, estimated intensity II (weak) in town; 1 felt report to USGS. Every earthquake near Maeser

This page: a magnitude 4.1 earthquake was recorded 10 km (6 mi) west of Maeser, UT, at 5:57 pm MDT on 10 September 2025 (23:57 UTC), 68 km deep. 183 people have reported feeling it to USGS.

USGS: 10 km W of Maeser, Utah

5:57 pm MDT, Sep 10, 2025 · · 68 km deep · released about 24 tons of TNT

10 km30 km60 km120 km N Uintah County 42 kmDaggett County 49 kmDuchesne County 65 kmUinta County 115 kmSummit County 115 kmCarbon County 117 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
5:57 pm MDT on 10 September 2025 ()
Where
10 km (6 mi) west of Maeser, UT · earthquakes near Maeser
Magnitude
M 4.1 (ml)
Depth
68 km below the surface
Felt
183 reports · strongest reported intensity III
Measured shaking
intensity IV (ShakeMap)
USGS impact alert
green
Nearest
Uintah County, 42 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 62 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 82 km (51 mi) from the epicentre. In Maeser, 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: Vernal, Naples, Ballard.

How big was it?

This earthquake released about 24 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 7,200× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 320× the energy of this one
  3. Magna, Utah 2020 M 5.7 230× the energy of this one
  4. This earthquake M 4.1 about 24 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 50× 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 since 1900 lists no earthquake of M5 or more within 50 km.

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 40.4802, -109.7048. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Uintah County, UT 42 km (26 mi) SSE earthquakes near Uintah County
Daggett County, UT 49 km (30 mi) NNE earthquakes near Daggett County
Duchesne County, UT 65 km (40 mi) WSW earthquakes near Duchesne County
Uinta County, WY 115 km (71 mi) NW earthquakes near Uinta County
Summit County, UT 115 km (72 mi) WNW earthquakes near Summit County
Carbon County, UT 117 km (73 mi) SW earthquakes near Carbon 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. 2.1 24 km NNE of Vernal, Utah
  2. 3.1 24 km NNE of Maeser, Utah
  3. 3.1 18 km NNE of Maeser, Utah
  4. 3.3 16 km NNE of Maeser, Utah
  5. 1.9 12 km SSW of Jensen, Utah
  6. 3.0 21 km NNE of Maeser, Utah
  7. 3.1 20 km NNE of Maeser, Utah
  8. 3.4 22 km NNE of Vernal, Utah
  9. 3.2 18 km NNE of Maeser, Utah
  10. 3.1 20 km NNE of Maeser, Utah
  11. 3.3 25 km NNE of Maeser, Utah
  12. 3.1 15 km NNE of Maeser, Utah
  13. 3.2 15 km NNE of Maeser, Utah
  14. 3.3 17 km NNE of Maeser, Utah
  15. 3.1 18 km NNE of Maeser, 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.