QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

4 km WNW of Yaurel, Puerto Rico

· 23 km deep · released about 7.6 lb of TNT

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10 km30 km60 km120 km N Guayama Municipio 9 kmCayey Municipio 9 kmArroyo Municipio 10 kmPatillas Municipio 13 kmCidra Municipio 16 kmSan Lorenzo Municipio 17 kmSalinas Municipio 19 kmCaguas Municipio 19 kmAibonito 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 1.6 (md)
Depth
23 km below the surface
Felt
no reports yet
Nearest
Guayama Municipio, 9 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2887 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 7.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.6 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 18.0421, -66.0968. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guayama Municipio, PR 9 km (5 mi) NNE of here earthquakes near Guayama Municipio
Cayey Municipio, PR 9 km (6 mi) SE of here earthquakes near Cayey Municipio
Arroyo Municipio, PR 10 km (6 mi) NW of here earthquakes near Arroyo Municipio
Patillas Municipio, PR 13 km (8 mi) WNW of here earthquakes near Patillas Municipio
Cidra Municipio, PR 16 km (10 mi) SSE of here earthquakes near Cidra Municipio
San Lorenzo Municipio, PR 17 km (11 mi) SW 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

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

  1. 1.7 6 km SSW of Capitanejo, Puerto Rico
  2. 1.6 7 km S of Jauca, Puerto Rico
  3. 2.8 4 km E of Bayamón, Puerto Rico
  4. 1.8 1 km NNW of Sumidero, Puerto Rico
  5. 1.9 2 km SW of Las Ollas, Puerto Rico
  6. 1.8 1 km NW of H. Rivera Colon, Puerto Rico
  7. 1.6 3 km SE of Santa Isabel, Puerto Rico
  8. 2.9 2 km ESE of H. Rivera Colon, Puerto Rico
  9. 1.6 4 km SSW of Playita Cortada, Puerto Rico
  10. 1.7 8 km S of Emajagua, Puerto Rico
  11. 2.5 9 km SSW of Arroyo, Puerto Rico
  12. 2.6 2 km ENE of Corozal, Puerto Rico
  13. 1.7 5 km E of Comerío, Puerto Rico
  14. 1.8 2 km SSE of Santa Isabel, Puerto Rico
  15. 1.7 Puerto Rico region

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 32,000 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.