Earthquake · reviewed by a seismologist
M 1.5ml
29 km E of La Sal, Utah
Yes. A magnitude 1.5 earthquake was recorded 29 km E of La Sal, Utah, at 10:42 pm MDT on 24 June 2021 (04:42 UTC), 7.6 km deep.
- When
- Magnitude
- M 1.5 (ml)
- Depth
- 7.6 km below the surface
- Felt
- no reports yet
- Nearest
- San Miguel County, 52 km SE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1889 days ago
Earthquake alerts for Monticello, UT
Get a notification in this browser when USGS records an earthquake near Monticello, 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 7 km (4 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.
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
The largest earthquake within 50 km since 2016 was M 4.5 on 2019-03-04 — about 31,000 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 38.2911, -108.9088. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| San Miguel County, CO | 52 km (33 mi) | SE | earthquakes near San Miguel County |
| Montrose County, CO | 58 km (36 mi) | ENE | earthquakes near Montrose County |
| Dolores County, CO | 71 km (44 mi) | SSE | earthquakes near Dolores County |
| Mesa County, CO | 90 km (56 mi) | NNE | earthquakes near Mesa County |
| Grand County, UT | 95 km (59 mi) | NW | earthquakes near Grand County |
| Ouray County, CO | 99 km (62 mi) | E | earthquakes near Ouray 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.
- 1.5 26 km ESE of La Sal, Utah
- 2.0 29 km E of La Sal, Utah
- 1.6 28 km ESE of La Sal, Utah
- 2.1 28 km E of La Sal, Utah
- 2.2 28 km E of La Sal, Utah
- 2.0 28 km E of La Sal, Utah
- 2.1 28 km E of La Sal, Utah
- 1.6 30 km E of La Sal, 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.