QuakeIndex

Earthquake · reviewed by a seismologist

M 3.4md

119 km N of Suárez, Puerto Rico

· 64 km deep · released about 2 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Loíza 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 3.4 (md)
Depth
64 km below the surface
Felt
no reports yet
Nearest
Loíza Municipio, 120 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1156 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 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 19.5097, -65.7565. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Loíza Municipio, PR 120 km (75 mi) N of here earthquakes near Loíza Municipio
Cataño Municipio, PR 125 km (78 mi) NNE of here earthquakes near Cataño Municipio
Toa Baja Municipio, PR 126 km (78 mi) NNE of here earthquakes near Toa Baja Municipio
Dorado Municipio, PR 127 km (79 mi) NNE of here earthquakes near Dorado Municipio
Vega Alta Municipio, PR 134 km (83 mi) NNE of here earthquakes near Vega Alta Municipio
Vega Baja Municipio, PR 135 km (84 mi) NNE of here earthquakes near Vega Baja Municipio

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

Aftershocks so far

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

  1. 3.9 129 km N of Suárez, Puerto Rico
  2. 3.7 Puerto Rico region
  3. 3.7 139 km N of Suárez, Puerto Rico
  4. 3.8 136 km N of Suárez, Puerto Rico
  5. 3.9 130 km N of Suárez, Puerto Rico
  6. 3.7 136 km N of Suárez, Puerto Rico
  7. 3.9 130 km N of Suárez, Puerto Rico
  8. 2.5 123 km N of Suárez, Puerto Rico
  9. 3.8 124 km N of Su?rez, Puerto Rico
  10. 3.8 142 km N of Suárez, Puerto Rico
  11. 3.8 Puerto Rico region
  12. 4.0 132 km N of Suárez, Puerto Rico
  13. 3.9 135 km N of Suárez, Puerto Rico
  14. 3.5 90 km N of Suárez, Puerto Rico
  15. 3.7 129 km N of Suárez, 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 4.4 on 2023-02-28 — it released about 35 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.