QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

8 km NNW of Isabel Segunda, Puerto Rico

· 115 km deep · released about 140 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Vieques Municipio 11 kmCeiba Municipio 16 kmCulebra Municipio 21 kmFajardo Municipio 22 kmNaguabo Municipio 28 kmLuquillo Municipio 30 kmHumacao Municipio 34 kmRío Grande Municipio 38 kmLas Piedras Municipio 42 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
Magnitude
M 2.5 (md)
Depth
115 km below the surface
Felt
no reports yet
Nearest
Vieques Municipio, 11 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2902 days ago

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

How big was it?

This earthquake released about 140 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 110,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 75,000× the energy of this one
  3. Around the size people start to feel M 3.0 6.7× the energy of this one
  4. This earthquake M 2.5 about 140 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 18.2170, -65.4748. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Vieques Municipio, PR 11 km (7 mi) NNW of here earthquakes near Vieques Municipio
Ceiba Municipio, PR 16 km (10 mi) ESE of here earthquakes near Ceiba Municipio
Culebra Municipio, PR 21 km (13 mi) SW of here earthquakes near Culebra Municipio
Fajardo Municipio, PR 22 km (14 mi) SSE of here earthquakes near Fajardo Municipio
Naguabo Municipio, PR 28 km (17 mi) E of here earthquakes near Naguabo Municipio
Luquillo Municipio, PR 30 km (19 mi) SE of here earthquakes near Luquillo Municipio

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

Aftershocks so far

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

  1. 2.3 35 km NE of Luquillo, Puerto Rico
  2. 3.1 29 km ESE of Esperanza, Puerto Rico
  3. 2.6 5 km SE of Esperanza, Puerto Rico
  4. 2.9 39 km NNW of Culebra, Puerto Rico
  5. 1.9 21 km SSW of Esperanza, Puerto Rico
  6. 2.9 9 km ENE of Isabel Segunda, Puerto Rico
  7. 2.7 20 km N of Luquillo, Puerto Rico
  8. 2.8 31 km NNE of Luquillo, Puerto Rico
  9. 1.8 18 km ESE of El Negro, Puerto Rico
  10. 2.2 Puerto Rico region
  11. 2.6 3 km NNW of Benitez, Puerto Rico
  12. 2.6 14 km SW of Esperanza, Puerto Rico
  13. 1.9 17 km SE of Esperanza, Puerto Rico
  14. 2.9 41 km ESE of Esperanza, Puerto Rico
  15. 2.8 23 km NNE of Luquillo, Puerto Rico

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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.3 on 2016-09-02 — it released about 600 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.