QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

5 km E of Comerío, Puerto Rico

· 19 km deep · released about 11 lb of TNT

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10 km30 km60 km120 km N Comerío Municipio 4 kmCidra Municipio 6 kmAguas Buenas Municipio 6 kmNaranjito Municipio 11 kmCaguas Municipio 14 kmBayamón Municipio 14 kmCayey Municipio 14 kmAibonito Municipio 14 kmBarranquitas Municipio 14 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
Comerío Municipio, 4 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2854 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 11 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 1,300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 930,000× the energy of this one
  3. Around the size people start to feel M 3.0 83× the energy of this one
  4. This earthquake M 1.7 about 11 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 18.2258, -66.1786. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Comerío Municipio, PR 4 km (3 mi) E of here earthquakes near Comerío Municipio
Cidra Municipio, PR 6 km (4 mi) NNW of here earthquakes near Cidra Municipio
Aguas Buenas Municipio, PR 6 km (4 mi) WSW of here earthquakes near Aguas Buenas Municipio
Naranjito Municipio, PR 11 km (7 mi) SE of here earthquakes near Naranjito Municipio
Caguas Municipio, PR 14 km (8 mi) W of here earthquakes near Caguas Municipio
Bayamón Municipio, PR 14 km (9 mi) S of here earthquakes near Bayamón Municipio

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

Aftershocks so far

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

  1. 1.8 1 km NNW of Sumidero, Puerto Rico
  2. 2.1 11 km N of Loíza, Puerto Rico
  3. 1.9 2 km SW of Las Ollas, Puerto Rico
  4. 2.6 14 km N of Brenas, Puerto Rico
  5. 1.8 1 km NW of H. Rivera Colon, Puerto Rico
  6. 1.6 3 km SE of Santa Isabel, Puerto Rico
  7. 2.9 2 km ESE of H. Rivera Colon, Puerto Rico
  8. 2.0 Puerto Rico region
  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

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 21,000 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.