QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

Earthquake near Shreveport, LA

No earthquake was likely felt in Shreveport in the 24 hours to 4:36 am CST (10:36 UTC). The last one was M 3.4, 67 km (41 mi) SSE, at 3:00 pm CDT on 21 August 2026, estimated intensity II (weak) in town; 78 felt reports to USGS. Every earthquake near Shreveport

This page: a magnitude 2.1 earthquake was recorded 29 km (18 mi) east of Shreveport, LA, at 9:20 pm CST on 6 December 2021 (03:20 UTC), less than 1 km deep.

USGS: 3 km W of Doyline, Louisiana

34 km (21 mi) ENE of Shreveport, LA · 20 km (12 mi) E of Bossier City, LA

9:20 pm CST, Dec 6, 2021 · · 0.1 km deep · released about 44 lb of TNT

10 km30 km60 km120 km N Webster Parish 24 kmBossier Parish 25 kmCaddo Parish 42 kmBienville Parish 43 kmRed River Parish 49 kmClaiborne Parish 53 kmDe Soto Parish 60 kmLincoln Parish 74 kmColumbia County 79 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
9:20 pm CST on 6 December 2021 ()
Where
29 km (18 mi) east of Shreveport, LA · earthquakes near Shreveport
Magnitude
M 2.1 (md)
Depth
0.1 km below the surface
Felt
no reports yet
Nearest
Webster Parish, 24 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1800 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 29 km (18 mi) from the epicentre. In Shreveport, 29 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.

Likely felt in: Shreveport 29 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 44 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 340,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 240,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. This earthquake M 2.1 about 44 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 32.5347, -93.4430. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Webster Parish, LA 24 km (15 mi) NNE earthquakes near Webster Parish
Bossier Parish, LA 25 km (16 mi) NW earthquakes near Bossier Parish
Caddo Parish, LA 42 km (26 mi) W earthquakes near Caddo Parish
Bienville Parish, LA 43 km (27 mi) ESE earthquakes near Bienville Parish
Red River Parish, LA 49 km (30 mi) S earthquakes near Red River Parish
Claiborne Parish, LA 53 km (33 mi) NE earthquakes near Claiborne Parish

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

Aftershocks so far

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

  1. 2.4 6 km NNW of Ringgold, Louisiana
  2. 1.9 3 km ENE of Jamestown, Louisiana
  3. 2.3 5 km N of Castor, Louisiana
  4. 2.3 7 km ENE of Jamestown, Louisiana
  5. 2.2 3 km SE of Ringgold, Louisiana
  6. 2.3 3 km S of Jamestown, Louisiana
  7. 2.3 4 km NNE of Ringgold, Louisiana
  8. 1.8 5 km NW of Edgefield, Louisiana
  9. 2.9 6 km NNW of Edgefield, Louisiana
  10. 2.2 13 km NW of Edgefield, Louisiana
  11. 2.5 5 km NW of Edgefield, Louisiana
  12. 3.0 4 km ESE of Mooringsport, Louisiana
  13. 2.1 6 km NNW of Edgefield, Louisiana
  14. 2.7 8 km SSE of Doyline, Louisiana
  15. 2.7 3 km N of Ringgold, Louisiana

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.