QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3md

6 km WSW of Estancias de Florida, Puerto Rico

· 133 km deep · released about 1.3 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Florida Municipio 7 kmUtuado Municipio 11 kmArecibo Municipio 12 kmCiales Municipio 12 kmJayuya Municipio 15 kmBarceloneta Municipio 16 kmManatí Municipio 18 kmHatillo Municipio 22 kmMorovis Municipio 22 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
133 km below the surface
Felt
no reports yet
Nearest
Florida Municipio, 7 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 807 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 1.3 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 6.7 130,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 5,600× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,000× the energy of this one
  4. This earthquake M 3.3 about 1.3 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.8× 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 18.3370, -66.6248. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Florida Municipio, PR 7 km (5 mi) WSW of here earthquakes near Florida Municipio
Utuado Municipio, PR 11 km (7 mi) NE of here earthquakes near Utuado Municipio
Arecibo Municipio, PR 12 km (7 mi) SSE of here earthquakes near Arecibo Municipio
Ciales Municipio, PR 12 km (8 mi) WNW of here earthquakes near Ciales Municipio
Jayuya Municipio, PR 15 km (9 mi) NNW of here earthquakes near Jayuya Municipio
Barceloneta Municipio, PR 16 km (10 mi) SSW of here earthquakes near Barceloneta Municipio

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

Aftershocks so far

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

  1. 2.1 2 km SW of Indios, Puerto Rico
  2. 2.3 3 km SSW of Indios, Puerto Rico
  3. 3.0 6 km ESE of Las Marías, Puerto Rico
  4. 2.3 2 km W of Santo Domingo, Puerto Rico
  5. 2.6 3 km SSW of Capitanejo, Puerto Rico
  6. 2.4 1 km N of Indios, Puerto Rico
  7. 2.4 1 km WSW of Indios, Puerto Rico
  8. 3.0 2 km SW of Indios, Puerto Rico
  9. 2.4 1 km S of Indios, Puerto Rico
  10. 2.0 2 km E of Yauco, Puerto Rico
  11. 2.3 1 km W of Capitanejo, Puerto Rico
  12. 2.7 2 km SW of Indios, Puerto Rico
  13. 2.4 2 km E of Tallaboa, Puerto Rico
  14. 2.9 2 km WSW of Indios, Puerto Rico
  15. 2.6 1 km NNE of Magas Arriba, 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 6.4 on 2020-01-07 — it released about 45,000 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.