QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

3 km ENE of Pastos, Puerto Rico

· 19 km deep · released about 9.6 lb of TNT

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10 km30 km60 km120 km N Aibonito Municipio 3 kmCidra Municipio 9 kmCayey Municipio 9 kmComerío Municipio 10 kmBarranquitas Municipio 11 kmCoamo Municipio 13 kmNaranjito Municipio 18 kmAguas Buenas Municipio 18 kmSalinas Municipio 18 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
19 km below the surface
Felt
no reports yet
Nearest
Aibonito Municipio, 3 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2876 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 9.6 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 1,600,000× 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 99× the energy of this one
  4. This earthquake M 1.7 about 9.6 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 18.1323, -66.2346. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Aibonito Municipio, PR 3 km (2 mi) E of here earthquakes near Aibonito Municipio
Cidra Municipio, PR 9 km (6 mi) WSW of here earthquakes near Cidra Municipio
Cayey Municipio, PR 9 km (6 mi) WNW of here earthquakes near Cayey Municipio
Comerío Municipio, PR 10 km (6 mi) S of here earthquakes near Comerío Municipio
Barranquitas Municipio, PR 11 km (7 mi) SE of here earthquakes near Barranquitas Municipio
Coamo Municipio, PR 13 km (8 mi) ENE of here earthquakes near Coamo Municipio

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

Aftershocks so far

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

  1. 1.8 1 km NW of H. Rivera Colon, Puerto Rico
  2. 1.6 3 km SE of Santa Isabel, Puerto Rico
  3. 2.9 2 km ESE of H. Rivera Colon, Puerto Rico
  4. 2.3 4 km ESE of Ponce, Puerto Rico
  5. 2.0 Puerto Rico region
  6. 1.6 4 km SSW of Playita Cortada, Puerto Rico
  7. 1.9 3 km ESE of Ponce, Puerto Rico
  8. 1.7 8 km S of Emajagua, Puerto Rico
  9. 2.5 9 km SSW of Arroyo, Puerto Rico
  10. 2.6 2 km ENE of Corozal, Puerto Rico
  11. 1.7 5 km E of Comerío, Puerto Rico
  12. 1.7 1 km WNW of Ponce, Puerto Rico
  13. 1.8 2 km SSE of Santa Isabel, Puerto Rico
  14. 1.7 Puerto Rico region
  15. 2.0 5 km S of Salinas, 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 2016-12-05 — it released about 25,000 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.