QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4ml

Earthquake near Glenwood Springs, CO

No earthquake was likely felt in Glenwood Springs in the 24 hours to 5:27 am MST (12:27 UTC). The last one was M 5.0, 690 km (429 mi) SE, at 4:21 am MDT on 23 July 2026, estimated intensity II (weak) in town; 499 felt reports to USGS. Every earthquake near Glenwood Springs

This page: a magnitude 2.4 earthquake was recorded 23 km (14 mi) north-northwest of Glenwood Springs, CO, at 10:21 am MST on 24 November 2020 (17:21 UTC), 5.0 km deep.

USGS: 19 km NNE of Chacra, Colorado

10:21 am MST, Nov 24, 2020 · · 5.0 km deep · released about 120 lb of TNT

10 km30 km60 km120 km N Garfield County 47 kmEagle County 62 kmPitkin County 72 kmRio Blanco County 73 kmRoutt County 89 kmDelta County 106 kmLake County 109 kmSummit County 109 kmGrand County 117 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
10:21 am MST on 24 November 2020 ()
Where
23 km (14 mi) north-northwest of Glenwood Springs, CO · earthquakes near Glenwood Springs
Magnitude
M 2.4 (ml)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Garfield County, 47 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2108 days ago

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 21 km (13 mi) from the epicentre. In Glenwood Springs, 23 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.

Earthquakes near other towns within 30 km: New Castle.

How big was it?

This earthquake released about 120 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 89,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.9× the energy of this one
  4. This earthquake M 2.4 about 120 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 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 39.7486, -107.4005. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Garfield County, CO 47 km (29 mi) WSW earthquakes near Garfield County
Eagle County, CO 62 km (38 mi) ESE earthquakes near Eagle County
Pitkin County, CO 72 km (45 mi) SE earthquakes near Pitkin County
Rio Blanco County, CO 73 km (45 mi) WNW earthquakes near Rio Blanco County
Routt County, CO 89 km (55 mi) NNE earthquakes near Routt County
Delta County, CO 106 km (66 mi) SSW earthquakes near Delta County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

15 earthquakes have been recorded within 50 km since this one.

  1. 2.8 18 km SSE of Meeker, Colorado
  2. 1.9 26 km WSW of Yampa, Colorado
  3. 2.0 29 km WSW of Yampa, Colorado
  4. 2.2 10 km NW of Dotsero, Colorado
  5. 2.5 30 km NNW of Dotsero, Colorado
  6. 2.1 6 km NNW of Chacra, Colorado
  7. 2.5 22 km NNW of New Castle, Colorado
  8. 2.9 6 km NNE of Chacra, Colorado
  9. 2.5 7 km NNW of Chacra, Colorado
  10. 2.6 6 km NNW of Chacra, Colorado
  11. 2.9 8 km NNW of Chacra, Colorado
  12. 2.1 9 km NNE of New Castle, Colorado
  13. 2.5 6 km NNW of Gypsum, Colorado
  14. 1.8 2 km NNW of El Jebel, Colorado
  15. 1.7 15 km NW of Dotsero, 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.