QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

1 km E of Palmas, Puerto Rico

· 80 km deep · released about 390 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Patillas Municipio 3 kmArroyo Municipio 4 kmMaunabo Municipio 12 kmGuayama Municipio 14 kmYabucoa Municipio 18 kmSan Lorenzo Municipio 18 kmCayey Municipio 20 kmCaguas Municipio 25 kmCidra Municipio 26 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 2.7 (md)
Depth
80 km below the surface
Felt
no reports yet
Nearest
Patillas Municipio, 3 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 283 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 390 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 39,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 28,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.5× the energy of this one
  4. This earthquake M 2.7 about 390 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 17.9880, -66.0080. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Patillas Municipio, PR 3 km (2 mi) WSW of here earthquakes near Patillas Municipio
Arroyo Municipio, PR 4 km (2 mi) ENE of here earthquakes near Arroyo Municipio
Maunabo Municipio, PR 12 km (7 mi) W of here earthquakes near Maunabo Municipio
Guayama Municipio, PR 14 km (9 mi) E of here earthquakes near Guayama Municipio
Yabucoa Municipio, PR 18 km (11 mi) WSW of here earthquakes near Yabucoa Municipio
San Lorenzo Municipio, PR 18 km (11 mi) S of here earthquakes near San Lorenzo 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. 2.9 21 km SW of Esperanza, Puerto Rico
  2. 3.7 29 km SSW of Esperanza, Puerto Rico
  3. 2.7 3 km SE of Jobos, Puerto Rico
  4. 1.5 1 km NE of Vázquez, Puerto Rico
  5. 2.1 1 km SE of Aguas Buenas, Puerto Rico
  6. 1.6 2 km ESE of Jobos, Puerto Rico
  7. 2.1 2 km SE of Jobos, Puerto Rico
  8. 2.5 1 km W of Santa Clara, Puerto Rico
  9. 1.5 6 km S of Central Aguirre, Puerto Rico
  10. 2.5 4 km ESE of Pájaros, Puerto Rico
  11. 2.6 2 km WSW of G. L. Garcia, Puerto Rico
  12. 2.0 2 km SSW of Vázquez, Puerto Rico
  13. 2.0 11 km SSE of Punta Santiago, Puerto Rico
  14. 2.0 0 km WSW of Aguas Buenas, Puerto Rico
  15. 1.9 0 km SW of G. L. Garcia, 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 4.6 on 2016-12-05 — it released about 620 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.