QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3Md

11 km ESE of Isabel Segunda, Puerto Rico

· 16 km deep · released about 85 lb of TNT

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10 km30 km60 km120 km N Vieques Municipio 10 kmCulebra Municipio 26 kmCeiba Municipio 34 kmFajardo Municipio 41 kmNaguabo Municipio 43 kmHumacao Municipio 47 kmLuquillo Municipio 49 kmYabucoa Municipio 54 kmLas Piedras Municipio 56 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 2.3 (Md)
Depth
16 km below the surface
Felt
no reports yet
Nearest
Vieques Municipio, 10 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3670 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 85 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 5.8 180,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 11× the energy of this one
  4. This earthquake M 2.3 about 85 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 18.0958, -65.3478. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Vieques Municipio, PR 10 km (6 mi) ESE of here earthquakes near Vieques Municipio
Culebra Municipio, PR 26 km (16 mi) S of here earthquakes near Culebra Municipio
Ceiba Municipio, PR 34 km (21 mi) ESE of here earthquakes near Ceiba Municipio
Fajardo Municipio, PR 41 km (26 mi) SE of here earthquakes near Fajardo Municipio
Naguabo Municipio, PR 43 km (27 mi) ESE of here earthquakes near Naguabo Municipio
Humacao Municipio, PR 47 km (29 mi) E of here earthquakes near Humacao Municipio

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

Aftershocks so far

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

  1. 2.0 32 km SSW of Esperanza, Puerto Rico
  2. 1.6 26 km SE of El Negro, Puerto Rico
  3. 2.0 16 km WNW of Charlotte Amalie, U.S. Virgin Islands
  4. 2.7 32 km SSW of Esperanza, Puerto Rico
  5. 2.0 23 km SW of Charlotte Amalie, U.S. Virgin Islands
  6. 3.3 20 km S of Charlotte Amalie, U.S. Virgin Islands
  7. 1.8 15 km ESE of Emajagua, Puerto Rico
  8. 1.9 24 km SE of El Negro, Puerto Rico
  9. 2.2 14 km WSW of Esperanza, Puerto Rico
  10. 1.8 27 km SW of Esperanza, Puerto Rico
  11. 1.7 14 km SSE of Esperanza, Puerto Rico
  12. 2.6 27 km SW of Esperanza, Puerto Rico
  13. 2.8 23 km S of Charlotte Amalie, U.S. Virgin Islands
  14. 2.6 20 km WNW of Charlotte Amalie, U.S. Virgin Islands
  15. 2.5 7 km SW of Culebra, 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 1,000 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.