QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3md

11 km SW of La Playa, Puerto Rico

· 27 km deep · released about 1.4 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Rincón Municipio 15 kmAñasco Municipio 16 kmHormigueros Municipio 17 kmAguada Municipio 20 kmCabo Rojo Municipio 25 kmSan Germán Municipio 25 kmMoca Municipio 27 kmLas Marías Municipio 29 kmAguadilla Municipio 33 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
27 km below the surface
Felt
3 reports · strongest reported intensity II
Nearest
Rincón Municipio, 15 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 430 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1.4 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 6.7 120,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 5,200× the energy of this one
  3. Magna, Utah 2020 M 5.7 3,700× the energy of this one
  4. This earthquake M 3.3 about 1.4 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 3× 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 18.2060, -67.2550. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Rincón Municipio, PR 15 km (9 mi) S of here earthquakes near Rincón Municipio
Añasco Municipio, PR 16 km (10 mi) SW of here earthquakes near Añasco Municipio
Hormigueros Municipio, PR 17 km (10 mi) WNW of here earthquakes near Hormigueros Municipio
Aguada Municipio, PR 20 km (13 mi) SSW of here earthquakes near Aguada Municipio
Cabo Rojo Municipio, PR 25 km (15 mi) NNW of here earthquakes near Cabo Rojo Municipio
San Germán Municipio, PR 25 km (16 mi) WNW of here earthquakes near San Germán Municipio

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

Aftershocks so far

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

  1. 2.4 11 km W of Adjuntas, Puerto Rico
  2. 2.5 18 km S of La Parguera, Puerto Rico
  3. 2.4 0 km SSE of Yauco, Puerto Rico
  4. 2.2 3 km NE of Las Marias, Puerto Rico
  5. 1.9 7 km SE of La Parguera, Puerto Rico
  6. 2.7 2 km NW of La Parguera, Puerto Rico
  7. 3.1 27 km W of Rincón, Puerto Rico
  8. 2.5 3 km SSW of Guánica, Puerto Rico
  9. 2.8 1 km ENE of Las Marías, Puerto Rico
  10. 2.3 2 km SSE of Maria Antonia, Puerto Rico
  11. 2.1 1 km WSW of Liborio Negron Torres, Puerto Rico
  12. 2.3 2 km WSW of Indios, Puerto Rico
  13. 2.3 5 km WSW of Guánica, Puerto Rico
  14. 2.7 8 km W of Mayagüez, Puerto Rico
  15. 2.5 3 km W of Fuig, 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 5.3 on 2020-07-03 — it released about 930 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.