Earthquake · reviewed by a seismologist
M 3.8ml
Earthquake near Loma, CO
No earthquake was likely felt in Loma in the 24 hours to 10:25 am MST (17:25 UTC). The last one was M 3.8, 44 km (27 mi) WSW, at 4:12 pm MDT on 31 May 2022, estimated intensity II (weak) in town; 100 felt reports to USGS. Every earthquake near Loma
This page: a magnitude 3.8 earthquake was recorded 44 km (27 mi) west-southwest of Loma, CO, at 4:12 pm MDT on 31 May 2022 (22:12 UTC), 6.8 km deep. 100 people have reported feeling it to USGS.
USGS: 37 km ENE of Thompson Springs, Utah
- When
- 4:12 pm MDT on 31 May 2022 ()
- Where
- 44 km (27 mi) west-southwest of Loma, CO · earthquakes near Loma
- Magnitude
- M 3.8 (ml)
- Depth
- 6.8 km below the surface
- Felt
- 100 reports · strongest reported intensity III
- Measured shaking
- intensity IV (ShakeMap)
- Nearest
- Grand County, 26 km WSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1560 days ago
Earthquake alerts for Loma, CO
Get a notification in this browser when USGS records an earthquake near Loma, CO. 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 80 km (50 mi) from the epicentre. In Loma, 44 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.
How big was it?
This earthquake released about 6.6 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.8 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 26,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 1,100× the energy of this one
- Magna, Utah 2020 M 5.7 810× the energy of this one
- This earthquake M 3.8 about 6.6 tons of TNT
- Around the size people start to feel M 3.0 this one released 14× 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 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 39.0608, -109.2958. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Grand County, UT | 26 km (16 mi) | WSW | earthquakes near Grand County |
| Mesa County, CO | 72 km (45 mi) | E | earthquakes near Mesa County |
| Montrose County, CO | 115 km (72 mi) | SE | earthquakes near Montrose County |
| Uintah County, UT | 120 km (75 mi) | N | earthquakes near Uintah County |
| Carbon County, UT | 130 km (81 mi) | WNW | earthquakes near Carbon County |
| Garfield County, CO | 133 km (83 mi) | ENE | earthquakes near Garfield County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
17 earthquakes have been recorded within 50 km since this one.
- 1.7 37 km NE of Thompson Springs, Utah
- 2.3 35 km SW of Loma, Colorado
- 1.8 35 km WSW of Loma, Colorado
- 1.9 42 km NNE of Thompson Springs, Utah
- 1.7 Utah
- 2.1 28 km NNE of Castle Valley, Utah
- 1.9 28 km NNE of Castle Valley, Utah
- 1.7 27 km NNE of Castle Valley, Utah
- 1.6 34 km E of Thompson Springs, Utah
- 1.8 27 km NNE of Castle Valley, Utah
- 1.6 28 km NNE of Castle Valley, Utah
- 1.8 27 km NNE of Castle Valley, Utah
- 1.9 27 km NNE of Castle Valley, Utah
- 1.7 29 km NNE of Castle Valley, Utah
- 1.6 27 km NNE of Castle Valley, 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.