QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3md

119 km NNW of San Antonio, Puerto Rico

· 89 km deep · released about 1.4 tons of TNT

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10 km30 km60 km120 km N Aguadilla Municipio 120 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
89 km below the surface
Felt
no reports yet
Nearest
Aguadilla Municipio, 120 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2972 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 1.4 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 5,400× the energy of this one
  3. Magna, Utah 2020 M 5.7 3,800× 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 2.9× 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 19.5165, -67.4618. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Aguadilla Municipio, PR 120 km (75 mi) NNW of here earthquakes near Aguadilla Municipio
Isabela Municipio, PR 124 km (77 mi) NNW of here earthquakes near Isabela Municipio
Quebradillas Municipio, PR 130 km (81 mi) NNW of here earthquakes near Quebradillas Municipio
Camuy Municipio, PR 135 km (84 mi) NNW of here earthquakes near Camuy Municipio
Hatillo Municipio, PR 138 km (86 mi) NNW of here earthquakes near Hatillo Municipio
Barceloneta Municipio, PR 150 km (93 mi) NW of here earthquakes near Barceloneta Municipio

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

Aftershocks so far

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

  1. 3.3 123 km NNE of Punta Cana, Dominican Republic
  2. 3.4 111 km NE of Punta Cana, Dominican Republic
  3. 3.3 121 km NNE of Punta Cana, Dominican Republic
  4. 3.3 117 km NE of Punta Cana, Dominican Republic
  5. 2.8 125 km NNE of Punta Cana, Dominican Republic
  6. 3.1 114 km NNE of Punta Cana, Dominican Republic
  7. 3.0 92 km N of Isabela, Puerto Rico
  8. 3.1 118 km NNE of Punta Cana, Dominican Republic
  9. 3.3 103 km NNE of Punta Cana, Dominican Republic
  10. 3.3 105 km NE of Punta Cana, Dominican Republic
  11. 2.5 99 km NNW of San Antonio, Puerto Rico
  12. 3.3 108 km NNW of San Antonio, Puerto Rico
  13. 3.1 88 km NNW of San Antonio, Puerto Rico
  14. 3.1 87 km N of San Antonio, Puerto Rico
  15. 3.2 118 km N of Isabela, 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 4.2 on 2017-08-27 — it released about 20 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.