QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

4 km SW of Patillas, Puerto Rico

· 71 km deep · released about 140 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Patillas Municipio 4 kmArroyo Municipio 9 kmMaunabo Municipio 10 kmSan Lorenzo Municipio 13 kmYabucoa Municipio 14 kmGuayama Municipio 17 kmCayey Municipio 19 kmLas Piedras Municipio 21 kmCaguas Municipio 21 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
71 km below the surface
Felt
no reports yet
Nearest
Patillas Municipio, 4 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2858 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 18.0343, -65.9853. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Patillas Municipio, PR 4 km (2 mi) N of here earthquakes near Patillas Municipio
Arroyo Municipio, PR 9 km (6 mi) NE of here earthquakes near Arroyo Municipio
Maunabo Municipio, PR 10 km (6 mi) WNW of here earthquakes near Maunabo Municipio
San Lorenzo Municipio, PR 13 km (8 mi) S of here earthquakes near San Lorenzo Municipio
Yabucoa Municipio, PR 14 km (8 mi) WSW of here earthquakes near Yabucoa Municipio
Guayama Municipio, PR 17 km (11 mi) ENE of here earthquakes near Guayama Municipio

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

Aftershocks so far

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

  1. 1.6 5 km SE of Arroyo, Puerto Rico
  2. 2.3 4 km NW of Palomas, Puerto Rico
  3. 2.3 Puerto Rico region
  4. 1.8 11 km S of Emajagua, Puerto Rico
  5. 2.5 1 km ESE of Salinas, Puerto Rico
  6. 1.9 2 km WNW of Las Ollas, Puerto Rico
  7. 2.1 23 km S of Emajagua, Puerto Rico
  8. 1.8 9 km SSW of Emajagua, Puerto Rico
  9. 2.2 24 km SE of Emajagua, Puerto Rico
  10. 1.9 3 km ENE of Bairoa, Puerto Rico
  11. 2.2 1 km NW of Sumidero, Puerto Rico
  12. 2.7 2 km SW of H. Rivera Colon, Puerto Rico
  13. 2.6 3 km N of Cidra, Puerto Rico
  14. 2.5 6 km ESE of San Juan, Puerto Rico
  15. 1.7 3 km SSE of Santa Isabel, 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 1,700 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.