QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

4 km E of Espino, Puerto Rico

· 52 km deep · released about 10 lb of TNT

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10 km30 km60 km120 km N Añasco Municipio 6 kmLas Marías Municipio 11 kmMoca Municipio 12 kmSan Sebastián Municipio 13 kmHormigueros Municipio 16 kmAguada Municipio 17 kmMaricao Municipio 18 kmSan Germán Municipio 19 kmRincón 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 1.7 (md)
Depth
52 km below the surface
Felt
no reports yet
Nearest
Añasco Municipio, 6 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2793 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 10 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 95× the energy of this one
  4. This earthquake M 1.7 about 10 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 18.2718, -67.0733. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Añasco Municipio, PR 6 km (4 mi) ESE of here earthquakes near Añasco Municipio
Las Marías Municipio, PR 11 km (7 mi) WNW of here earthquakes near Las Marías Municipio
Moca Municipio, PR 12 km (7 mi) S of here earthquakes near Moca Municipio
San Sebastián Municipio, PR 13 km (8 mi) WSW of here earthquakes near San Sebastián Municipio
Hormigueros Municipio, PR 16 km (10 mi) NNE of here earthquakes near Hormigueros Municipio
Aguada Municipio, PR 17 km (10 mi) SE of here earthquakes near Aguada Municipio

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

Aftershocks so far

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

  1. 2.7 31 km WSW of Stella, Puerto Rico
  2. 2.3 1 km NNW of Indios, Puerto Rico
  3. 1.9 5 km E of La Parguera, Puerto Rico
  4. 2.2 2 km ESE of Las Marías, Puerto Rico
  5. 2.2 3 km ESE of Las Marías, Puerto Rico
  6. 1.7 2 km ESE of Las Marías, Puerto Rico
  7. 2.0 2 km NNE of Las Marías, Puerto Rico
  8. 1.9 3 km NNE of Las Marías, Puerto Rico
  9. 3.8 1 km ESE of Las Marías, Puerto Rico
  10. 2.8 4 km WNW of Mayagüez, Puerto Rico
  11. 2.5 2 km SW of Espino, Puerto Rico
  12. 2.4 7 km NNE of Hatillo, Puerto Rico
  13. 2.1 2 km N of Sabana Eneas, Puerto Rico
  14. 2.0 4 km SW of Maricao, Puerto Rico
  15. 2.5 14 km SSW of Stella, 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 4.3 on 2017-10-14 — it released about 8,500 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.