QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3md

108 km N of Suárez, Puerto Rico

· 30 km deep · released about 1.3 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Loíza Municipio 108 kmSan Juan Municipio 114 kmCataño Municipio 114 kmCarolina Municipio 114 kmToa Baja Municipio 114 kmRío Grande Municipio 114 kmFajardo Municipio 115 kmLuquillo Municipio 115 kmDorado Municipio 116 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
30 km below the surface
Felt
no reports yet
Nearest
Loíza Municipio, 108 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1939 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 19.4048, -65.7710. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Loíza Municipio, PR 108 km (67 mi) N of here earthquakes near Loíza Municipio
San Juan Municipio, PR 114 km (71 mi) NNE of here earthquakes near San Juan Municipio
Cataño Municipio, PR 114 km (71 mi) NNE of here earthquakes near Cataño Municipio
Carolina Municipio, PR 114 km (71 mi) N of here earthquakes near Carolina Municipio
Toa Baja Municipio, PR 114 km (71 mi) NNE of here earthquakes near Toa Baja Municipio
Río Grande Municipio, PR 114 km (71 mi) N of here earthquakes near Río Grande Municipio

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

Aftershocks so far

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

  1. 3.1 65 km N of Suárez, Puerto Rico
  2. 3.1 64 km N of Suárez, Puerto Rico
  3. 3.2 71 km N of San Juan, Puerto Rico
  4. 3.7 149 km N of Suárez, Puerto Rico
  5. 3.0 67 km N of San Juan, Puerto Rico
  6. 3.5 Puerto Rico region
  7. 3.6 102 km NNE of Suárez, Puerto Rico
  8. 3.3 100 km N of San Juan, Puerto Rico
  9. 3.2 60 km N of Loíza, Puerto Rico
  10. 3.7 126 km NNE of Suárez, Puerto Rico
  11. 2.7 71 km NNE of San Juan, Puerto Rico
  12. 3.9 78 km N of San Juan, Puerto Rico
  13. 3.5 121 km N of San Juan, Puerto Rico
  14. 3.3 129 km NNE of Vieques, Puerto Rico
  15. 3.5 135 km NNE of Vieques, 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 4.0 on 2019-06-21 — it released about 11 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.