QuakeIndex

Earthquake · reviewed by a seismologist

M 3.6mwr

Earthquake near Angel Fire, NM

USGS: 20 km NE of Ute Park, New Mexico

5:25 pm MST, Dec 25, 2018 · · 5.0 km deep · released about 3.8 tons of TNT

10 km30 km60 km120 km N Colfax County 33 kmTaos County 60 kmCostilla County 74 kmMora County 81 kmLas Animas County 107 kmHuerfano County 108 kmAlamosa County 119 kmConejos County 120 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
5:25 pm MST on 25 December 2018 ()
Where
45 km (28 mi) NE of Angel Fire, NM · earthquakes near Angel Fire
Magnitude
M 3.6 (mwr)
Depth
5.0 km below the surface
Felt
5 reports · strongest reported intensity II
Measured shaking
intensity IV (ShakeMap)
Nearest
Colfax County, 33 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1517 days ago

A magnitude 3.6 earthquake was recorded 45 km (28 mi) NE of Angel Fire, NM, at 5:25 pm MST on 25 December 2018 (00:25 UTC). 5 people have reported feeling it to USGS. This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 3.8 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.6 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 45,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 2,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 1,400× the energy of this one
  4. This earthquake M 3.6 about 3.8 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 7.9× 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

The largest earthquake within 50 km in our catalogue was M 4.2 on 2016-12-23 — about 7.9 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 36.7135, -104.9838. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Colfax County, NM 33 km (20 mi) ESE earthquakes near Colfax County
Taos County, NM 60 km (38 mi) WSW earthquakes near Taos County
Costilla County, CO 74 km (46 mi) NNW earthquakes near Costilla County
Mora County, NM 81 km (51 mi) S earthquakes near Mora County
Las Animas County, CO 107 km (67 mi) NE earthquakes near Las Animas County
Huerfano County, CO 108 km (67 mi) N earthquakes near Huerfano County

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

Aftershocks so far

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

  1. 1.7 14 km S of Weston, Colorado
  2. 1.7 15 km S of Weston, Colorado
  3. 2.0 12 km SW of Weston, Colorado
  4. 1.7 16 km SSE of Stonewall Gap, Colorado
  5. 2.1 16 km SSE of Stonewall Gap, Colorado
  6. 2.2 16 km SSE of Stonewall Gap, Colorado
  7. 2.9 15 km S of Stonewall Gap, Colorado
  8. 2.2 14 km SSE of Stonewall Gap, Colorado
  9. 2.0 15 km S of Stonewall Gap, Colorado
  10. 1.6 16 km SSE of Stonewall Gap, Colorado
  11. 2.3 Colorado
  12. 1.5 14 km S of Stonewall Gap, Colorado
  13. 2.2 15 km S of Stonewall Gap, Colorado
  14. 1.5 15 km S of Stonewall Gap, Colorado
  15. 1.9 16 km S of Stonewall Gap, 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.