QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

3 km NE of La Plena, Puerto Rico

· 21 km deep · released about 950 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cayey Municipio 5 kmGuayama Municipio 11 kmAibonito Municipio 12 kmCidra Municipio 12 kmSalinas Municipio 14 kmArroyo Municipio 18 kmComerío Municipio 18 kmCoamo Municipio 19 kmBarranquitas Municipio 20 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 3.0 (md)
Depth
21 km below the surface
Felt
3 reports · strongest reported intensity II
Nearest
Cayey Municipio, 5 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1185 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 950 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 350,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 11,000× the energy of this one
  4. This earthquake M 3.0 about 950 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 18.0650, -66.1792. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cayey Municipio, PR 5 km (3 mi) SW of here earthquakes near Cayey Municipio
Guayama Municipio, PR 11 km (7 mi) NNW of here earthquakes near Guayama Municipio
Aibonito Municipio, PR 12 km (7 mi) SE of here earthquakes near Aibonito Municipio
Cidra Municipio, PR 12 km (8 mi) S of here earthquakes near Cidra Municipio
Salinas Municipio, PR 14 km (8 mi) NE of here earthquakes near Salinas Municipio
Arroyo Municipio, PR 18 km (11 mi) NW of here earthquakes near Arroyo 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. 2.4 4 km WSW of Central Aguirre, Puerto Rico
  2. 2.5 Puerto Rico region
  3. 2.7 4 km S of Salinas, Puerto Rico
  4. 2.3 4 km SSE of Salinas, Puerto Rico
  5. 1.9 Puerto Rico region
  6. 2.3 1 km SSW of Ponce, Puerto Rico
  7. 2.4 0 km WSW of Ponce, Puerto Rico
  8. 3.3 Puerto Rico region
  9. 2.4 15 km SSE of Central Aguirre, Puerto Rico
  10. 2.4 15 km S of Central Aguirre, Puerto Rico
  11. 2.7 12 km S of Central Aguirre, Puerto Rico
  12. 2.6 18 km S of Jobos, Puerto Rico
  13. 2.5 Puerto Rico region
  14. 3.0 18 km S of Central Aguirre, Puerto Rico
  15. 2.7 16 km S of Central Aguirre, 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 250 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.