QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

3 km SW of Luyando, Puerto Rico

· 19 km deep · released about 170 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Aguada Municipio 3 kmRincón Municipio 8 kmAñasco Municipio 8 kmMoca Municipio 11 kmAguadilla Municipio 15 kmSan Sebastián Municipio 22 kmIsabela Municipio 23 kmHormigueros Municipio 25 kmLas Marías Municipio 25 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
19 km below the surface
Felt
no reports yet
Nearest
Aguada Municipio, 3 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 378 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 170 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 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 18.3467, -67.1800. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Aguada Municipio, PR 3 km (2 mi) S of here earthquakes near Aguada Municipio
Rincón Municipio, PR 8 km (5 mi) E of here earthquakes near Rincón Municipio
Añasco Municipio, PR 8 km (5 mi) NW of here earthquakes near Añasco Municipio
Moca Municipio, PR 11 km (7 mi) WSW of here earthquakes near Moca Municipio
Aguadilla Municipio, PR 15 km (10 mi) SSW of here earthquakes near Aguadilla Municipio
San Sebastián Municipio, PR 22 km (14 mi) W of here earthquakes near San Sebastián 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. 2.4 1 km NNE of Lluveras, Puerto Rico
  2. 1.9 3 km E of La Parguera, Puerto Rico
  3. 2.1 5 km ENE of Sabana Grande, Puerto Rico
  4. 2.1 4 km W of Fuig, Puerto Rico
  5. 2.5 4 km ENE of La Parguera, Puerto Rico
  6. 3.1 32 km W of Rincón, Puerto Rico
  7. 3.3 33 km NW of San Antonio, Puerto Rico
  8. 2.7 30 km W of Puerto Real, Puerto Rico
  9. 2.3 5 km SSW of Palmarejo, Puerto Rico
  10. 2.2 4 km NE of Hormigueros, Puerto Rico
  11. 3.0 7 km E of Pole Ojea, Puerto Rico
  12. 2.1 3 km WSW of La Parguera, Puerto Rico
  13. 2.5 5 km SSW of Pole Ojea, Puerto Rico
  14. 2.4 2 km WNW of Arecibo, Puerto Rico
  15. 2.3 4 km E of Lajas, 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 4.9 on 2020-07-03 — it released about 4,000 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.