QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

Earthquake near Questa, NM

No earthquake was likely felt in Questa in the 24 hours to 2:20 pm MST (21:20 UTC). The last one was M 3.4, 68 km (42 mi) NE, at 3:34 am MST on 8 November 2026, estimated intensity II (weak) in town; 2 felt reports to USGS. Every earthquake near Questa

This page: a magnitude 1.5 earthquake was recorded 48 km (30 mi) east-northeast of Questa, NM, at 10:30 pm MDT on 26 September 2024 (04:30 UTC), 5.0 km deep.

USGS: 31 km N of Ute Park, New Mexico

10:30 pm MDT, Sep 26, 2024 · · 5.0 km deep · released about 5.4 lb of TNT

10 km30 km60 km120 km N Colfax County 47 kmCostilla County 58 kmTaos County 58 kmHuerfano County 95 kmMora County 96 kmAlamosa County 102 kmConejos County 106 kmLas Animas County 106 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
10:30 pm MDT on 26 September 2024 ()
Where
48 km (30 mi) east-northeast of Questa, NM · earthquakes near Questa
Magnitude
M 1.5 (ml)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Colfax County, 47 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 705 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 9 km (6 mi) from the epicentre. In Questa, 48 km away, the estimate is intensity I (not felt). 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.

  1. Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. 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 in our catalogue was M 4.3 on 2023-03-10 — about 16,000 times the energy of this one.

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 36.8399, -105.0794. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Colfax County, NM 47 km (29 mi) ESE earthquakes near Colfax County
Costilla County, CO 58 km (36 mi) NNW earthquakes near Costilla County
Taos County, NM 58 km (36 mi) WSW earthquakes near Taos County
Huerfano County, CO 95 km (59 mi) N earthquakes near Huerfano County
Mora County, NM 96 km (60 mi) S earthquakes near Mora County
Alamosa County, CO 102 km (64 mi) NW earthquakes near Alamosa County

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

Aftershocks so far

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

  1. 2.1 30 km S of Weston, Colorado
  2. 1.5 23 km NW of Maxwell, New Mexico
  3. 2.2 25 km S of Weston, Colorado
  4. 1.7 19 km S of Weston, Colorado
  5. 1.5 20 km S of Weston, Colorado
  6. 2.2 19 km S of Weston, Colorado
  7. 2.0 17 km S of Weston, Colorado
  8. 1.6 32 km S of Segundo, Colorado
  9. 3.4 16 km S of Weston, Colorado
  10. 2.7 28 km SSW of Segundo, Colorado
  11. 1.9 15 km S of Weston, Colorado
  12. 2.0 32 km WSW of Raton, New Mexico
  13. 2.7 30 km WSW of Raton, New Mexico
  14. 1.5 20 km S of Weston, Colorado
  15. 1.5 33 km WSW of Raton, New Mexico

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.