QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

3 km SSW of G. L. Garcia, Puerto Rico

· 25 km deep · released about 490 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cayey Municipio 3 kmCidra Municipio 9 kmGuayama Municipio 14 kmCaguas Municipio 15 kmAibonito Municipio 16 kmSan Lorenzo Municipio 16 kmArroyo Municipio 16 kmComerío Municipio 17 kmAguas Buenas Municipio 18 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 2.8 (md)
Depth
25 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Cayey Municipio, 3 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2288 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 490 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 31,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 22,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.9× the energy of this one
  4. This earthquake M 2.8 about 490 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 18.0983, -66.1218. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cayey Municipio, PR 3 km (2 mi) E of here earthquakes near Cayey Municipio
Cidra Municipio, PR 9 km (6 mi) SSE of here earthquakes near Cidra Municipio
Guayama Municipio, PR 14 km (9 mi) N of here earthquakes near Guayama Municipio
Caguas Municipio, PR 15 km (9 mi) SSW of here earthquakes near Caguas Municipio
Aibonito Municipio, PR 16 km (10 mi) ESE of here earthquakes near Aibonito Municipio
San Lorenzo Municipio, PR 16 km (10 mi) WSW 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

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

  1. 2.5 Puerto Rico region
  2. 2.3 1 km SSE of Cidra, Puerto Rico
  3. 2.0 Puerto Rico region
  4. 2.8 13 km S of Central Aguirre, Puerto Rico
  5. 2.4 3 km NNW of Barranquitas, Puerto Rico
  6. 1.8 3 km N of Río Cañas Abajo, Puerto Rico
  7. 2.7 4.2 km NNE of Potala Pastillo, Puerto Rico
  8. 3.1 7.3 km NNE of Potala Pastillo, Puerto Rico
  9. 2.6 3 km SW of Potala Pastillo, Puerto Rico
  10. 2.2 1 km E of Candelero Arriba, Puerto Rico
  11. 2.3 9.4 km NNE of Potala Pastillo, Puerto Rico
  12. 2.8 1 km ESE of Orocovis, Puerto Rico
  13. 2.7 0 km WSW of Galateo, Puerto Rico
  14. 2.8 6 km NE of Orocovis, Puerto Rico
  15. 2.4 21 km SE of Emajagua, 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 480 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.