QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3md

1 km S of Comerío, Puerto Rico

· 10 km deep · released about 1.1 tons of TNT

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10 km30 km60 km120 km N Comerío Municipio 2 kmCidra Municipio 7 kmBarranquitas Municipio 9 kmAibonito Municipio 9 kmNaranjito Municipio 10 kmAguas Buenas Municipio 12 kmCayey Municipio 14 kmCorozal Municipio 15 kmBayamón Municipio 17 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 3.3 (md)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Comerío Municipio, 2 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1485 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 1.1 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 150,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 6,700× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,700× the energy of this one
  4. This earthquake M 3.3 about 1.1 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.4× more

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 18.2043, -66.2238. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Comerío Municipio, PR 2 km (1 mi) SSW of here earthquakes near Comerío Municipio
Cidra Municipio, PR 7 km (5 mi) WNW of here earthquakes near Cidra Municipio
Barranquitas Municipio, PR 9 km (6 mi) E of here earthquakes near Barranquitas Municipio
Aibonito Municipio, PR 9 km (6 mi) NNE of here earthquakes near Aibonito Municipio
Naranjito Municipio, PR 10 km (6 mi) SSE of here earthquakes near Naranjito Municipio
Aguas Buenas Municipio, PR 12 km (7 mi) WSW of here earthquakes near Aguas Buenas 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. 3.3 5 km SSW of Potala Pastillo, Puerto Rico
  2. 2.4 5 km S of Potala Pastillo, Puerto Rico
  3. 2.6 Puerto Rico region
  4. 2.2 6 km SSW of Potala Pastillo, Puerto Rico
  5. 3.0 5 km SSW of Potala Pastillo, Puerto Rico
  6. 2.8 6 km SSW of Potala Pastillo, Puerto Rico
  7. 2.9 3 km SW of Potala Pastillo, Puerto Rico
  8. 3.0 5 km SSW of Potala Pastillo, Puerto Rico
  9. 2.2 4 km SSW of Capitanejo, Puerto Rico
  10. 3.0 5 km SW of Potala Pastillo, Puerto Rico
  11. 3.4 4 km SSW of Potala Pastillo, Puerto Rico
  12. 3.4 5 km SSW of Potala Pastillo, Puerto Rico
  13. 3.6 5 km E of Candelero Arriba, Puerto Rico
  14. 3.0 11 km NNW of Brenas, Puerto Rico
  15. 2.8 5 km NNW of Dorado, 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 110 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.