QuakeIndex

Earthquake · reviewed by a seismologist

M 3.4md

3 km NNE of Benitez, Puerto Rico

· 132 km deep · released about 2 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Canóvanas Municipio 4 kmJuncos Municipio 9 kmRío Grande Municipio 11 kmGurabo Municipio 12 kmLas Piedras Municipio 13 kmTrujillo Alto Municipio 15 kmCarolina Municipio 15 kmNaguabo Municipio 17 kmLoíza 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 3.4 (md)
Depth
132 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Canóvanas Municipio, 4 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1269 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 2 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 86,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 3,800× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,700× the energy of this one
  4. This earthquake M 3.4 about 2 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 4.1× 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 18.3007, -65.8688. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Canóvanas Municipio, PR 4 km (2 mi) SSE of here earthquakes near Canóvanas Municipio
Juncos Municipio, PR 9 km (6 mi) NNE of here earthquakes near Juncos Municipio
Río Grande Municipio, PR 11 km (7 mi) SW of here earthquakes near Río Grande Municipio
Gurabo Municipio, PR 12 km (8 mi) ENE of here earthquakes near Gurabo Municipio
Las Piedras Municipio, PR 13 km (8 mi) N of here earthquakes near Las Piedras Municipio
Trujillo Alto Municipio, PR 15 km (9 mi) ESE of here earthquakes near Trujillo Alto Municipio

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

Aftershocks so far

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

  1. 2.6 Puerto Rico region
  2. 2.6 2 km WNW of Bayamon, Puerto Rico
  3. 2.9 2 km NNE of Parcelas La Milagrosa, Puerto Rico
  4. 2.7 1 km W of Juncos, Puerto Rico
  5. 3.0 Puerto Rico region
  6. 3.2 6 km N of San Juan, Puerto Rico
  7. 3.0 Puerto Rico region
  8. 2.6 6 km S of Emajagua, Puerto Rico
  9. 3.6 0 km ENE of Pájaros, Puerto Rico
  10. 3.0 1 km E of Jagual, Puerto Rico
  11. 2.9 23 km NNE of Luquillo, Puerto Rico
  12. 3.0 22 km N of San Juan, Puerto Rico
  13. 2.7 2 km E of Santa Clara, Puerto Rico
  14. 3.0 1 km ENE of Bayamon, Puerto Rico
  15. 2.8 24 km ESE of El Negro, 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 61 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.