QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1md

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 3.1 earthquake was recorded 24 km (15 mi) southeast of Culebra, PR, at 5:37 am AST on 12 April 2025 (09:37 UTC), 30 km deep. 1 person has reported feeling it to USGS.

USGS: 23 km SE of Culebra, Puerto Rico

5:37 am AST, Apr 12, 2025 · · 30 km deep · released about 1,300 lb of TNT

Every earthquake near Culebra Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Culebra Municipio 26 kmVieques Municipio 32 kmCeiba Municipio 53 kmFajardo Municipio 54 kmNaguabo Municipio 64 kmLuquillo Municipio 65 kmHumacao Municipio 69 kmRío Grande Municipio 74 kmYabucoa Municipio 78 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
5:37 am AST on 12 April 2025 ()
Where
24 km (15 mi) southeast of Culebra, PR · earthquakes near Culebra
Magnitude
M 3.1 (md)
Depth
30 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Culebra Municipio, 26 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 578 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 27 km (17 mi) from the epicentre. In Culebra, 24 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 24 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 1,300 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 270,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 12,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 8,500× the energy of this one
  4. This earthquake M 3.1 about 1,300 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.3× 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 since 2016 was M 4.8 on 2021-10-08 — about 380 times the energy of this one.

Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:

  1. 5.0 29 km S of Cruz Bay, U.S. Virgin Islands · 41 km ESE of this epicentre

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 18.1615, -65.1320. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Culebra Municipio, PR 26 km (16 mi) NW earthquakes near Culebra Municipio
Vieques Municipio, PR 32 km (20 mi) W earthquakes near Vieques Municipio
Ceiba Municipio, PR 53 km (33 mi) WNW earthquakes near Ceiba Municipio
Fajardo Municipio, PR 54 km (34 mi) WNW earthquakes near Fajardo Municipio
Naguabo Municipio, PR 64 km (40 mi) W earthquakes near Naguabo Municipio
Luquillo Municipio, PR 65 km (41 mi) WNW earthquakes near Luquillo Municipio

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

Aftershocks so far

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

  1. 3.2 35 km SE of Esperanza, Puerto Rico
  2. 3.0 6 km WSW of Charlotte Amalie, U.S. Virgin Islands
  3. 3.1 17 km SSE of Esperanza, Puerto Rico
  4. 2.5 11 km SSE of Esperanza, Puerto Rico
  5. 3.4 23 km NW of Charlotte Amalie, U.S. Virgin Islands
  6. 3.1 18 km NW of Saint Croix, U.S. Virgin Islands
  7. 2.4 30 km SSW of Charlotte Amalie, U.S. Virgin Islands
  8. 3.1 21 km NE of Culebra, Puerto Rico
  9. 2.5 22 km SW of Charlotte Amalie, U.S. Virgin Islands
  10. 2.8 41 km SE of Esperanza, Puerto Rico
  11. 2.9 23 km S of Charlotte Amalie, U.S. Virgin Islands
  12. 2.9 8 km SW of Charlotte Amalie, U.S. Virgin Islands
  13. 3.0 16 km S of Cruz Bay, U.S. Virgin Islands
  14. 3.4 4 km NNW of Charlotte Amalie, U.S. Virgin Islands
  15. 3.1 13 km SSW of Cruz Bay, 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.