QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7Md

2 km SSW of Añasco, Puerto Rico

· 104 km deep · released about 340 lb of TNT

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10 km30 km60 km120 km N Añasco Municipio 4 kmAguada Municipio 13 kmRincón Municipio 13 kmHormigueros Municipio 15 kmMoca Municipio 15 kmLas Marías Municipio 19 kmSan Sebastián Municipio 21 kmSan Germán Municipio 21 kmAguadilla Municipio 24 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
104 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Añasco Municipio, 4 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3383 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 340 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 45,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 32,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.8× the energy of this one
  4. This earthquake M 2.7 about 340 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 18.2619, -67.1540. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Añasco Municipio, PR 4 km (2 mi) SW of here earthquakes near Añasco Municipio
Aguada Municipio, PR 13 km (8 mi) SSE of here earthquakes near Aguada Municipio
Rincón Municipio, PR 13 km (8 mi) SE of here earthquakes near Rincón Municipio
Hormigueros Municipio, PR 15 km (9 mi) NNW of here earthquakes near Hormigueros Municipio
Moca Municipio, PR 15 km (9 mi) SSW of here earthquakes near Moca Municipio
Las Marías Municipio, PR 19 km (12 mi) WNW of here earthquakes near Las Marías Municipio

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

Aftershocks so far

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

  1. 1.7 6 km W of La Parguera, Puerto Rico
  2. 2.0 2 km NNE of Sabana Eneas, Puerto Rico
  3. 2.0 23 km SW of Stella, Puerto Rico
  4. 2.1 36 km W of Rincón, Puerto Rico
  5. 1.8 25 km W of Puerto Real, Puerto Rico
  6. 2.1 3 km N of Monte Grande, Puerto Rico
  7. 2.4 1 km W of Palmarejo, Puerto Rico
  8. 1.6 9 km S of La Parguera, Puerto Rico
  9. 1.9 4 km NNW of Puerto Real, Puerto Rico
  10. 2.7 1 km ENE of Mayagüez, Puerto Rico
  11. 2.0 2 km WSW of Sabana Grande, Puerto Rico
  12. 2.3 3 km SSE of La Parguera, Puerto Rico
  13. 1.9 9 km SW of La Parguera, Puerto Rico
  14. 2.3 9 km SW of Guánica, Puerto Rico
  15. 2.5 19 km WNW of Rincón, 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.