QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

4 km ENE of Bayamon, Puerto Rico

· 15 km deep · released about 10 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Caguas Municipio 4 kmCidra Municipio 9 kmAguas Buenas Municipio 10 kmSan Lorenzo Municipio 11 kmCayey Municipio 12 kmGurabo Municipio 14 kmComerío Municipio 16 kmGuaynabo Municipio 18 kmJuncos 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
15 km below the surface
Felt
no reports yet
Nearest
Caguas Municipio, 4 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2747 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 18.1866, -66.0750. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Caguas Municipio, PR 4 km (2 mi) SW of here earthquakes near Caguas Municipio
Cidra Municipio, PR 9 km (6 mi) E of here earthquakes near Cidra Municipio
Aguas Buenas Municipio, PR 10 km (6 mi) SE of here earthquakes near Aguas Buenas Municipio
San Lorenzo Municipio, PR 11 km (7 mi) WNW of here earthquakes near San Lorenzo Municipio
Cayey Municipio, PR 12 km (8 mi) NE of here earthquakes near Cayey Municipio
Gurabo Municipio, PR 14 km (9 mi) SW of here earthquakes near Gurabo Municipio

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

Aftershocks so far

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

  1. 2.1 1 km WSW of Los Llanos, Puerto Rico
  2. 2.5 2 km ENE of Pájaros, Puerto Rico
  3. 1.5 5 km NW of Coamo, Puerto Rico
  4. 1.8 0 km SSE of Jobos, Puerto Rico
  5. 1.9 2 km S of Barahona, Puerto Rico
  6. 2.1 5 km NNE of Dorado, Puerto Rico
  7. 1.9 1 km E of Jauca, Puerto Rico
  8. 1.9 13 km N of Levittown, Puerto Rico
  9. 1.6 5 km SSE of Arroyo, Puerto Rico
  10. 2.5 1 km ESE of Toa Baja, Puerto Rico
  11. 1.7 15 km S of Central Aguirre, Puerto Rico
  12. 1.7 6 km ESE of Jayuya, Puerto Rico
  13. 1.5 4 km SSW of Salinas, Puerto Rico
  14. 1.8 2 km SE of Salinas, Puerto Rico
  15. 2.3 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 24,000 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.