QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

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 2.3 earthquake was recorded 38 km (24 mi) north-northeast of Culebra, PR, at 8:26 am AST on 30 May 2017 (12:26 UTC), 79 km deep.

USGS: Puerto Rico region

98 km (61 mi) ENE of San Juan, PR

8:26 am AST, May 30, 2017 · · 79 km deep · released about 98 lb of TNT

Every earthquake near Culebra Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Culebra Municipio 36 kmFajardo Municipio 51 kmVieques Municipio 62 kmCeiba Municipio 63 kmLuquillo Municipio 64 kmRío Grande Municipio 72 kmNaguabo Municipio 75 kmCanóvanas Municipio 82 kmLoíza Municipio 84 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
8:26 am AST on 30 May 2017 ()
Where
38 km (24 mi) north-northeast of Culebra, PR · earthquakes near Culebra
Magnitude
M 2.3 (md)
Depth
79 km below the surface
Felt
no reports yet
Nearest
Culebra Municipio, 36 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3452 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth it was probably too small to be felt, even directly above it. In Culebra, 38 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 98 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 150,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 110,000× the energy of this one
  3. Around the size people start to feel M 3.0 9.8× the energy of this one
  4. This earthquake M 2.3 about 98 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.

Where

Epicentre 18.6193, -65.1665. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Culebra Municipio, PR 36 km (22 mi) SSW earthquakes near Culebra Municipio
Fajardo Municipio, PR 51 km (32 mi) WSW earthquakes near Fajardo Municipio
Vieques Municipio, PR 62 km (38 mi) SSW earthquakes near Vieques Municipio
Ceiba Municipio, PR 63 km (39 mi) SW earthquakes near Ceiba Municipio
Luquillo Municipio, PR 64 km (40 mi) WSW earthquakes near Luquillo Municipio
Río Grande Municipio, PR 72 km (45 mi) WSW earthquakes near Río Grande Municipio

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

Aftershocks so far

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

  1. 2.3 35 km NNW of Charlotte Amalie, U.S. Virgin Islands
  2. 2.0 17 km NNW of Charlotte Amalie, U.S. Virgin Islands
  3. 1.9 Puerto Rico region
  4. 1.9 34 km NNW of Charlotte Amalie, U.S. Virgin Islands
  5. 1.9 72 km N of Culebra, Puerto Rico
  6. 3.0 77 km N of Charlotte Amalie, U.S. Virgin Islands
  7. 2.5 26 km N of Cruz Bay, U.S. Virgin Islands
  8. 2.1 73 km N of Culebra, Puerto Rico
  9. 2.0 32 km N of Charlotte Amalie, U.S. Virgin Islands
  10. 1.7 25 km NNW of Charlotte Amalie, U.S. Virgin Islands
  11. 1.8 26 km NW of Charlotte Amalie, U.S. Virgin Islands
  12. 2.7 63 km N of Charlotte Amalie, U.S. Virgin Islands
  13. 2.6 26 km NNW of Charlotte Amalie, U.S. Virgin Islands
  14. 1.6 66 km NNW of Charlotte Amalie, U.S. Virgin Islands
  15. 2.5 26 km NNW 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.