QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

Earthquake near Culebra, PR

Yes: an earthquake was likely felt in Culebra in the last 24 hours. M 2.9, 25 km (15 mi) ENE of Culebra, at 6:51 am AST on 11 November 2026 (10:51 UTC); the estimated shaking in Culebra was intensity II (weak). Every earthquake near Culebra

This page: a magnitude 2.9 earthquake was recorded 11 km (7 mi) west-northwest of Culebra, PR, at 2:11 pm AST on 6 March 2023 (18:11 UTC), 14 km deep.

USGS: 11 km WNW of Culebra, Puerto Rico

71 km (44 mi) E of San Juan, PR

2:11 pm AST, Mar 6, 2023 · · 14 km deep · released about 590 lb of TNT

Every earthquake near Culebra Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Culebra Municipio 10 kmFajardo Municipio 21 kmVieques Municipio 25 kmCeiba Municipio 26 kmLuquillo Municipio 33 kmNaguabo Municipio 39 kmRío Grande Municipio 42 kmHumacao Municipio 47 kmCanóvanas Municipio 51 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
2:11 pm AST on 6 March 2023 ()
Where
11 km (7 mi) west-northwest of Culebra, PR · earthquakes near Culebra
Magnitude
M 2.9 (md)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Culebra Municipio, 10 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1346 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 26 km (16 mi) from the epicentre. In Culebra, 11 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: Culebra 11 km, intensity II · Isabel Segunda 22 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 590 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 26,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 18,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.6× the energy of this one
  4. This earthquake M 2.9 about 590 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 4.8 on 2021-10-08 — about 810 times the energy of this one.

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 18.3448, -65.3985. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Culebra Municipio, PR 10 km (6 mi) ESE earthquakes near Culebra Municipio
Fajardo Municipio, PR 21 km (13 mi) WNW earthquakes near Fajardo Municipio
Vieques Municipio, PR 25 km (15 mi) S earthquakes near Vieques Municipio
Ceiba Municipio, PR 26 km (16 mi) WSW earthquakes near Ceiba Municipio
Luquillo Municipio, PR 33 km (20 mi) W earthquakes near Luquillo Municipio
Naguabo Municipio, PR 39 km (24 mi) WSW earthquakes near Naguabo Municipio

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

Aftershocks so far

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

  1. 2.3 6 km S of Punta Santiago, Puerto Rico
  2. 2.6 Puerto Rico region
  3. 3.2 37 km NNW of Charlotte Amalie, U.S. Virgin Islands
  4. 3.0 Puerto Rico region
  5. 3.9 18 km SE of Culebra, Puerto Rico
  6. 2.7 37 km SSW of Charlotte Amalie, U.S. Virgin Islands
  7. 2.7 5 km SSE of Esperanza, Puerto Rico
  8. 2.9 23 km NNE of Luquillo, Puerto Rico
  9. 3.2 2 km N of Charlotte Amalie, U.S. Virgin Islands
  10. 3.2 34 km NNW of Culebra, Puerto Rico
  11. 3.2 1 km NE of Bajandas, Puerto Rico
  12. 3.4 33 km NNW of Culebra, Puerto Rico
  13. 3.4 1 km W of Punta Santiago, Puerto Rico
  14. 2.6 25 km NNW of Charlotte Amalie, U.S. Virgin Islands
  15. 3.0 33 km SSW of Charlotte Amalie, U.S. Virgin Islands

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.