QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

5 km E of Naranjito, Puerto Rico

· 55 km deep · released about 530 lb of TNT

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10 km30 km60 km120 km N Bayamón Municipio 6 kmNaranjito Municipio 7 kmAguas Buenas Municipio 8 kmToa Alta Municipio 9 kmComerío Municipio 9 kmGuaynabo Municipio 9 kmCorozal Municipio 14 kmCidra Municipio 15 kmCataño 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 2.8 (md)
Depth
55 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Bayamón Municipio, 6 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 501 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 530 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 29,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 20,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.8× the energy of this one
  4. This earthquake M 2.8 about 530 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 18.3027, -66.1920. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Bayamón Municipio, PR 6 km (4 mi) SSW of here earthquakes near Bayamón Municipio
Naranjito Municipio, PR 7 km (4 mi) ENE of here earthquakes near Naranjito Municipio
Aguas Buenas Municipio, PR 8 km (5 mi) NW of here earthquakes near Aguas Buenas Municipio
Toa Alta Municipio, PR 9 km (5 mi) SE of here earthquakes near Toa Alta Municipio
Comerío Municipio, PR 9 km (6 mi) NNE of here earthquakes near Comerío Municipio
Guaynabo Municipio, PR 9 km (6 mi) WSW of here earthquakes near Guaynabo Municipio

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

Aftershocks so far

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

  1. 3.2 8 km NE of Dorado, Puerto Rico
  2. 2.2 4 km WNW of Orocovis, Puerto Rico
  3. 2.6 4 km NW of Orocovis, Puerto Rico
  4. 2.6 6 km WSW of Guaynabo, Puerto Rico
  5. 3.0 3 km N of Palomas, Puerto Rico
  6. 3.0 7 km NNE of Dorado, Puerto Rico
  7. 2.0 2 km SSW of Las Ochenta, Puerto Rico
  8. 3.6 1 km ESE of Carolina, Puerto Rico
  9. 2.8 4 km N of San Antonio, Puerto Rico
  10. 2.0 0 km ENE of Santa Isabel, Puerto Rico
  11. 2.3 3 km N of Playita Cortada, Puerto Rico
  12. 2.2 1 km ESE of Santa Isabel, Puerto Rico
  13. 2.1 1 km ENE of Jauca, Puerto Rico
  14. 2.3 2 km ENE of Jauca, Puerto Rico
  15. 2.6 1 km WNW of Parcelas Peñuelas, 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 450 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.