QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

10 km NNW of San Juan, Puerto Rico

· 84 km deep · released about 98 lb of TNT

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10 km30 km60 km120 km N Cataño Municipio 13 kmToa Baja Municipio 13 kmSan Juan Municipio 16 kmDorado Municipio 17 kmLoíza Municipio 23 kmBayamón Municipio 23 kmGuaynabo Municipio 24 kmCarolina Municipio 24 kmToa Alta Municipio 25 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 2.3 (md)
Depth
84 km below the surface
Felt
no reports yet
Nearest
Cataño Municipio, 13 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2703 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 98 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 150,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 110,000× the energy of this one
  3. Around the size people start to feel M 3.0 9.8× the energy of this one
  4. This earthquake M 2.3 about 98 lb of TNT

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 18.5568, -66.1283. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cataño Municipio, PR 13 km (8 mi) N of here earthquakes near Cataño Municipio
Toa Baja Municipio, PR 13 km (8 mi) NNE of here earthquakes near Toa Baja Municipio
San Juan Municipio, PR 16 km (10 mi) NNW of here earthquakes near San Juan Municipio
Dorado Municipio, PR 17 km (10 mi) ENE of here earthquakes near Dorado Municipio
Loíza Municipio, PR 23 km (14 mi) WNW of here earthquakes near Loíza Municipio
Bayamón Municipio, PR 23 km (15 mi) N of here earthquakes near Bayamón Municipio

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

Aftershocks so far

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

  1. 2.1 0 km ENE of Sabana, Puerto Rico
  2. 2.6 46 km N of Brenas, Puerto Rico
  3. 2.3 39 km N of San Juan, Puerto Rico
  4. 2.6 10 km N of San Juan, Puerto Rico
  5. 1.9 37 km N of San Juan, Puerto Rico
  6. 2.8 43 km N of Suárez, Puerto Rico
  7. 2.1 9 km NNW of Levittown, Puerto Rico
  8. 2.5 36 km NNE of Suárez, Puerto Rico
  9. 1.9 20 km NNE of Luquillo, Puerto Rico
  10. 2.1 19 km N of Brenas, Puerto Rico
  11. 2.1 2 km ENE of Celada, Puerto Rico
  12. 1.9 16 km N of Tierras Nuevas Poniente, Puerto Rico
  13. 1.8 11 km NNW of San Juan, Puerto Rico
  14. 2.3 25 km N of Brenas, Puerto Rico
  15. 2.0 19 km NNE of Tierras Nuevas Poniente, 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 4.8 on 2017-08-18 — it released about 4,900 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.