QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

Puerto Rico region

· 15 km deep · released about 290 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Aguas Buenas Municipio 6 kmComerío Municipio 7 kmNaranjito Municipio 8 kmBayamón Municipio 8 kmGuaynabo Municipio 10 kmCidra Municipio 11 kmToa Alta Municipio 12 kmCaguas Municipio 15 kmCorozal Municipio 16 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
15 km below the surface
Felt
no reports yet
Nearest
Aguas Buenas Municipio, 6 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1384 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 290 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 51,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 36,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.2× the energy of this one
  4. This earthquake M 2.7 about 290 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 18.2755, -66.1783. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Aguas Buenas Municipio, PR 6 km (4 mi) WNW of here earthquakes near Aguas Buenas Municipio
Comerío Municipio, PR 7 km (4 mi) NE of here earthquakes near Comerío Municipio
Naranjito Municipio, PR 8 km (5 mi) ESE of here earthquakes near Naranjito Municipio
Bayamón Municipio, PR 8 km (5 mi) S of here earthquakes near Bayamón Municipio
Guaynabo Municipio, PR 10 km (6 mi) SW of here earthquakes near Guaynabo Municipio
Cidra Municipio, PR 11 km (7 mi) N of here earthquakes near Cidra 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. 2.5 3 km WSW of Central Aguirre, Puerto Rico
  2. 2.8 1 km W of San Isidro, Puerto Rico
  3. 2.4 Puerto Rico region
  4. 2.0 1 km SSW of Vázquez, Puerto Rico
  5. 3.2 3 km NNW of San Juan, Puerto Rico
  6. 2.1 Puerto Rico region
  7. 2.2 3 km SE of Salinas, Puerto Rico
  8. 3.1 5 km N of Garrochales, Puerto Rico
  9. 1.9 2 km SSW of Coto Laurel, Puerto Rico
  10. 2.6 4 km SSE of Arroyo, Puerto Rico
  11. 3.0 4 km SSW of Potala Pastillo, Puerto Rico
  12. 2.2 2 km WSW of Aguilita, Puerto Rico
  13. 2.7 Puerto Rico region
  14. 3.4 Puerto Rico region
  15. 3.1 3 km E of Celada, 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 2019-03-12 — it released about 810 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.