QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

15 km E of Luis M. Cintron, Puerto Rico

· 16 km deep · released about 12 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ceiba Municipio 14 kmFajardo Municipio 15 kmVieques Municipio 20 kmCulebra Municipio 20 kmLuquillo Municipio 25 kmNaguabo Municipio 27 kmRío Grande Municipio 34 kmHumacao Municipio 36 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 1.7 (md)
Depth
16 km below the surface
Felt
2 reports · strongest reported intensity IV
Nearest
Ceiba Municipio, 14 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2557 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 12 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 870,000× the energy of this one
  3. Around the size people start to feel M 3.0 78× the energy of this one
  4. This earthquake M 1.7 about 12 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 18.2931, -65.4913. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ceiba Municipio, PR 14 km (9 mi) ENE of here earthquakes near Ceiba Municipio
Fajardo Municipio, PR 15 km (9 mi) SE of here earthquakes near Fajardo Municipio
Vieques Municipio, PR 20 km (12 mi) NNW of here earthquakes near Vieques Municipio
Culebra Municipio, PR 20 km (12 mi) W of here earthquakes near Culebra Municipio
Luquillo Municipio, PR 25 km (15 mi) ESE of here earthquakes near Luquillo Municipio
Naguabo Municipio, PR 27 km (17 mi) ENE of here earthquakes near Naguabo Municipio

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

Aftershocks so far

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

  1. 3.4 26 km SSW of Esperanza, Puerto Rico
  2. 3.4 19 km NNE of Luquillo, Puerto Rico
  3. 3.4 25 km NNE of Culebra, Puerto Rico
  4. 3.4 3 km E of Esperanza, Puerto Rico
  5. 2.8 19 km SSE of Esperanza, Puerto Rico
  6. 2.3 2 km W of Humacao, Puerto Rico
  7. 3.3 19 km W of Charlotte Amalie, U.S. Virgin Islands
  8. 2.7 18 km SSW of Esperanza, Puerto Rico
  9. 2.1 13 km WSW of Esperanza, Puerto Rico
  10. 2.8 7 km SW of Esperanza, Puerto Rico
  11. 2.7 7 km W of Isabel Segunda, Puerto Rico
  12. 2.3 5 km SSE of El Negro, Puerto Rico
  13. 2.8 40 km NNE of Luquillo, Puerto Rico
  14. 2.2 8 km SSW of Esperanza, Puerto Rico
  15. 2.7 9 km ENE 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 6,900 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.