Earthquake · reviewed by a seismologist
M 1.7ml
Earthquake near Trinidad, CO
No earthquake was likely felt in Trinidad in the 24 hours to 8:29 am MST (15:29 UTC). The last one was M 3.4, 45 km (28 mi) WSW, at 3:34 am MST on 8 November 2026, estimated intensity III (weak) in town; 2 felt reports to USGS. Every earthquake near Trinidad
This page: a magnitude 1.7 earthquake was recorded 13 km (8 mi) north-northwest of Trinidad, CO, at 9:45 am MST on 7 March 2020 (16:45 UTC), 9.0 km deep.
USGS: 10 km WNW of El Moro, Colorado
- When
- 9:45 am MST on 7 March 2020 ()
- Where
- 13 km (8 mi) north-northwest of Trinidad, CO · earthquakes near Trinidad
- Magnitude
- M 1.7 (ml)
- Depth
- 9.0 km below the surface
- Felt
- no reports yet
- Nearest
- Las Animas County, 47 km E
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2363 days ago
Earthquake alerts for Trinidad, CO
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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 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 9 km (6 mi) from the epicentre. In Trinidad, 13 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 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
- Around the size people start to feel M 3.0 89× the energy of this one
- This earthquake M 1.7 about 11 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 4.0 on 2016-02-06 — about 2,800 times the energy of this one.
Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:
- 5.3 6 km S of Valdez, Colorado · 26 km SSW of this epicentre
- 5.0 20 km S of Weston, Colorado · 43 km SSW 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 37.2692, -104.5731. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Las Animas County, CO | 47 km (29 mi) | E | earthquakes near Las Animas County |
| Huerfano County, CO | 58 km (36 mi) | NW | earthquakes near Huerfano County |
| Colfax County, NM | 73 km (45 mi) | S | earthquakes near Colfax County |
| Costilla County, CO | 76 km (47 mi) | W | earthquakes near Costilla County |
| Pueblo County, CO | 100 km (62 mi) | N | earthquakes near Pueblo County |
| Otero County, CO | 102 km (63 mi) | NE | earthquakes near Otero County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
59 earthquakes have been recorded within 50 km since this one.
- 1.6 14 km SSE of Stonewall Gap, Colorado
- 1.5 12 km SSE of Stonewall Gap, Colorado
- 1.7 9 km NW of El Moro, Colorado
- 1.7 14 km S of Weston, Colorado
- 1.6 8 km NNW of Lynn, Colorado
- 1.9 7 km NNW of Lynn, Colorado
- 1.6 9 km N of Lynn, Colorado
- 1.5 8 km N of Lynn, Colorado
- 2.5 15 km SSE of Stonewall Gap, Colorado
- 1.6 14 km SW of Aguilar, Colorado
- 2.3 15 km W of Aguilar, Colorado
- 2.9 12 km SSE of Stonewall Gap, Colorado
- 1.7 15 km W of Aguilar, Colorado
- 2.6 27 km S of Weston, Colorado
- 2.7 27 km SSW of Segundo, Colorado
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.