Earthquake · reviewed by a seismologist
M 3.2ml
Earthquake near Brigham City, UT
No earthquake was likely felt in Brigham City in the 24 hours to 3:55 pm MST (22:55 UTC). The last one was M 4.7, 116 km (72 mi) SE, at 7:49 am MST on 22 January 2026, estimated intensity II (weak) in town; 4,305 felt reports to USGS. Every earthquake near Brigham City
This page: a magnitude 3.2 earthquake was recorded 13 km (8 mi) west of Brigham City, UT, at 2:07 am MST on 16 February 2023 (09:07 UTC), 7.3 km deep. 92 people have reported feeling it to USGS.
USGS: 7 km SW of Corinne, Utah
84 km (52 mi) NNW of Salt Lake City, UT · 36 km (22 mi) NNW of Ogden, UT
- When
- 2:07 am MST on 16 February 2023 ()
- Where
- 13 km (8 mi) west of Brigham City, UT · earthquakes near Brigham City
- Magnitude
- M 3.2 (ml)
- Depth
- 7.3 km below the surface
- Felt
- 92 reports · strongest reported intensity III
- Measured shaking
- intensity III (ShakeMap)
- Nearest
- Weber County, 36 km SE
- Nearest mapped fault
- Wasatch fault, 13 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 1299 days ago
Earthquake alerts for Brigham City, UT
Get a notification in this browser when USGS records an earthquake near Brigham City, 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 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 44 km (27 mi) from the epicentre. In Brigham City, 13 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.
Likely felt in: Brigham City 13 km, intensity III · Tremonton 23 km, intensity II · North Ogden 29 km, intensity II · Ogden 36 km, intensity II · Logan 38 km, intensity II · North Logan 42 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 1,700 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 6.7 200,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 8,800× the energy of this one
- Magna, Utah 2020 M 5.7 6,200× the energy of this one
- This earthquake M 3.2 about 1,700 lb of TNT
- Around the size people start to feel M 3.0 this one released 1.8× 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
No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.
Before 2016, the USGS record lists 4 earthquakes of M5 or more within 50 km:
- 5.9 35 km SSW of Howell, Utah · 42 km W of this epicentre
- 5.2 27 km SW of Thatcher, Utah · 27 km W of this epicentre
- 5.1 27 km SW of Thatcher, Utah · 27 km W of this epicentre
- 5.1 27 km SW of Thatcher, Utah · 27 km W 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 41.5070, -112.1762. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Weber County, UT | 36 km (23 mi) | SE | earthquakes near Weber County |
| Cache County, UT | 44 km (27 mi) | NE | earthquakes near Cache County |
| Davis County, UT | 52 km (32 mi) | S | earthquakes near Davis County |
| Morgan County, UT | 68 km (42 mi) | SE | earthquakes near Morgan County |
| Box Elder County, UT | 75 km (46 mi) | W | earthquakes near Box Elder County |
| Rich County, UT | 79 km (49 mi) | E | earthquakes near Rich County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
54 earthquakes have been recorded within 50 km since this one.
- 1.8 15 km SW of Thatcher, Utah
- 1.7 15 km SW of Thatcher, Utah
- 1.9 16 km SW of Thatcher, Utah
- 2.0 15 km SW of Thatcher, Utah
- 2.0 16 km SW of Thatcher, Utah
- 1.8 15 km SW of Thatcher, Utah
- 2.0 15 km SW of Thatcher, Utah
- 2.0 15 km SW of Thatcher, Utah
- 2.6 15 km SW of Thatcher, Utah
- 1.5 15 km SW of Thatcher, Utah
- 2.1 15 km SW of Thatcher, Utah
- 3.4 14 km SW of Thatcher, Utah
- 4.4 16 km SW of Thatcher, Utah
- 2.3 16 km SW of Thatcher, Utah
- 1.9 16 km SW of Thatcher, 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.