mining explosion · reviewed by a seismologist
M 1.5ml
58 km W of Hooper, Utah
No: USGS classifies this as a mining explosion, not an earthquake. A magnitude 1.5 mining explosion was recorded 58 km W of Hooper, Utah, 82 km (51 mi) WNW of Salt Lake City, UT, at 1:10 pm MDT on 12 September 2022 (19:10 UTC), less than 1 km deep.
82 km (51 mi) WNW of Salt Lake City, UT
- When
- Magnitude
- M 1.5 (ml)
- Depth
- 0.0 km below the surface
- Felt
- no reports yet
- Nearest
- Davis County, 52 km E
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1454 days ago
Earthquake alerts for Hooper, UT
Get a notification in this browser when USGS records an earthquake near Hooper, UT. No account or email needed.
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 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. 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.
USGS catalogues this as mining explosion, not an earthquake.
How big was it?
This earthquake released about 5.4 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.
- Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
- Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
- Around the size people start to feel M 3.0 180× the energy of this one
- This earthquake M 1.5 about 5.4 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 2 earthquakes of M5 or more within 50 km:
- 5.9 35 km SSW of Howell, Utah · 50 km NNE of this epicentre
- 5.5 56 km SW of Howell, Utah · 48 km NNW 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 41.0944, -112.8173. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Davis County, UT | 52 km (32 mi) | E | earthquakes near Davis County |
| Box Elder County, UT | 62 km (39 mi) | NNW | earthquakes near Box Elder County |
| Tooele County, UT | 74 km (46 mi) | SSW | earthquakes near Tooele County |
| Weber County, UT | 81 km (50 mi) | ENE | earthquakes near Weber County |
| Salt Lake County, UT | 89 km (55 mi) | ESE | earthquakes near Salt Lake County |
| Morgan County, UT | 104 km (65 mi) | E | earthquakes near Morgan County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
58 earthquakes have been recorded within 50 km since this one.
- 2.1 65 km NW of Grantsville, Utah
- 1.9 63 km W of Hooper, Utah
- 1.9 67 km W of Hooper, Utah
- 2.1 71 km W of Hooper, Utah
- 2.1 64 km W of Hooper, Utah
- 2.0 64 km W of Hooper, Utah
- 2.2 69 km W of Hooper, Utah
- 1.9 67 km W of Hooper, Utah
- 1.8 69 km NW of Grantsville, Utah
- 2.3 66 km W of Hooper, Utah
- 1.7 68 km W of Hooper, Utah
- 1.9 66 km W of Hooper, Utah
- 1.9 69 km W of Hooper, Utah
- 2.2 68 km W of Hooper, Utah
- 2.1 68 km NW of Grantsville, 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.