QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

0 km SW of Coco, Puerto Rico

· 6.9 km deep · released about 9.3 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Salinas Municipio 4 kmGuayama Municipio 14 kmAibonito Municipio 14 kmSanta Isabel Municipio 14 kmCoamo Municipio 15 kmCayey Municipio 16 kmCidra Municipio 22 kmBarranquitas Municipio 22 kmArroyo 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 1.7 (md)
Depth
6.9 km below the surface
Felt
no reports yet
Nearest
Salinas Municipio, 4 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 81 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 9.3 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 3.0 100× the energy of this one
  4. This earthquake M 1.7 about 9.3 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 18.0040, -66.2632. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Salinas Municipio, PR 4 km (2 mi) N of here earthquakes near Salinas Municipio
Guayama Municipio, PR 14 km (9 mi) WNW of here earthquakes near Guayama Municipio
Aibonito Municipio, PR 14 km (9 mi) S of here earthquakes near Aibonito Municipio
Santa Isabel Municipio, PR 14 km (9 mi) ENE of here earthquakes near Santa Isabel Municipio
Coamo Municipio, PR 15 km (9 mi) SE of here earthquakes near Coamo Municipio
Cayey Municipio, PR 16 km (10 mi) SW of here earthquakes near Cayey Municipio

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

Aftershocks so far

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

  1. 2.3 0 km S of Tallaboa, Puerto Rico
  2. 2.2 5 km WSW of Naranjito, Puerto Rico
  3. 2.3 2 km NW of Tallaboa, Puerto Rico
  4. 2.2 0 km WSW of Tallaboa Alta, Puerto Rico
  5. 2.0 1 km W of Tallaboa, Puerto Rico
  6. 2.4 14 km SSE of Tallaboa, Puerto Rico
  7. 2.3 5 km NNW of Coco, Puerto Rico
  8. 2.3 2 km N of Tallaboa, Puerto Rico
  9. 2.2 7 km SSW of Capitanejo, Puerto Rico
  10. 2.9 0 km E of Parcelas Peñuelas, Puerto Rico
  11. 2.7 5 km SW of Guaynabo, Puerto Rico
  12. 2.2 0 km SE of Parcelas Peñuelas, Puerto Rico
  13. 2.1 3 km NE of La Plena, Puerto Rico
  14. 2.4 4 km SW of Ponce, Puerto Rico
  15. 2.6 4 km SSW of Ponce, 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 5.4 on 2020-05-02 — it released about 410,000 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.