mining explosion · reviewed by a seismologist
M 3.2ml
Earthquake near Maeser, UT
No earthquake was likely felt in Maeser in the 24 hours to 8:20 pm MST (03:20 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
No: USGS classifies this as a mining explosion, not an earthquake. A magnitude 3.2 mining explosion was recorded 18 km (11 mi) north-northeast of Maeser, UT, at 12:00 pm MST on 11 February 2026 (19:00 UTC), less than 1 km deep.
USGS: 18 km NNE of Maeser, Utah
- When
- 12:00 pm MST on 11 February 2026 ()
- Where
- 18 km (11 mi) north-northeast of Maeser, UT · earthquakes near Maeser
- Magnitude
- M 3.2 (ml)
- Depth
- 0.0 km below the surface
- Felt
- no reports yet
- Nearest
- Daggett County, 29 km N
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 195 days ago
Earthquake alerts for Maeser, UT
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Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.
At this magnitude and depth, people at rest would likely notice it out to about 47 km (29 mi) from the epicentre. In Maeser, 18 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.
Earthquakes near other towns within 30 km: Vernal, Naples.
USGS catalogues this as mining explosion, not an earthquake.
How big was it?
This earthquake released about 1,900 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 180,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 7,900× the energy of this one
- Magna, Utah 2020 M 5.7 5,600× the energy of this one
- This earthquake M 3.2 about 1,900 lb of TNT
- Around the size people start to feel M 3.0 this one released 2× 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 since 2016 was M 4.1 on 2025-09-10 — about 25 times the energy of this one.
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 40.6335, -109.5218. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Daggett County, UT | 29 km (18 mi) | N | earthquakes near Daggett County |
| Uintah County, UT | 56 km (35 mi) | S | earthquakes near Uintah County |
| Duchesne County, UT | 86 km (53 mi) | WSW | earthquakes near Duchesne County |
| Moffat County, CO | 110 km (68 mi) | E | earthquakes near Moffat County |
| Uinta County, WY | 113 km (70 mi) | NW | earthquakes near Uinta County |
| Sweetwater County, WY | 126 km (79 mi) | NNE | earthquakes near Sweetwater County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
8 earthquakes have been recorded within 50 km since this one.
- 2.1 24 km NNE of Vernal, Utah
- 3.1 24 km NNE of Maeser, Utah
- 3.1 18 km NNE of Maeser, Utah
- 3.3 16 km NNE of Maeser, Utah
- 1.9 12 km SSW of Jensen, Utah
- 3.0 21 km NNE of Maeser, Utah
- 3.1 20 km NNE of Maeser, Utah
- 3.4 22 km NNE of Vernal, 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.