QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

5 km E of San Juan, Puerto Rico

· 95 km deep · released about 9.6 lb of TNT

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10 km30 km60 km120 km N San Juan Municipio 6 kmCataño Municipio 11 kmLoíza Municipio 12 kmCarolina Municipio 12 kmToa Baja Municipio 15 kmGuaynabo Municipio 16 kmTrujillo Alto Municipio 16 kmBayamón Municipio 18 kmDorado 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 1.7 (md)
Depth
95 km below the surface
Felt
no reports yet
Nearest
San Juan Municipio, 6 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2669 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 9.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 99× the energy of this one
  4. This earthquake M 1.7 about 9.6 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 18.4748, -66.0535. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Juan Municipio, PR 6 km (4 mi) NNE of here earthquakes near San Juan Municipio
Cataño Municipio, PR 11 km (7 mi) ENE of here earthquakes near Cataño Municipio
Loíza Municipio, PR 12 km (8 mi) WNW of here earthquakes near Loíza Municipio
Carolina Municipio, PR 12 km (8 mi) NW of here earthquakes near Carolina Municipio
Toa Baja Municipio, PR 15 km (9 mi) E of here earthquakes near Toa Baja Municipio
Guaynabo Municipio, PR 16 km (10 mi) NNE of here earthquakes near Guaynabo Municipio

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

Aftershocks so far

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

  1. 2.2 43 km N of Suárez, Puerto Rico
  2. 2.4 1 km WNW of Pájaros, Puerto Rico
  3. 2.0 4 km NNE of Levittown, Puerto Rico
  4. 1.8 25 km NNE of Luquillo, Puerto Rico
  5. 2.5 23 km NNE of Luquillo, Puerto Rico
  6. 2.8 Puerto Rico region
  7. 2.6 2 km ESE of Mucarabones, Puerto Rico
  8. 2.5 28 km NNE of San Juan, Puerto Rico
  9. 2.7 0 km S of Cataño, Puerto Rico
  10. 2.0 3 km WNW of Corozal, Puerto Rico
  11. 1.7 2 km SSW of H. Rivera Colon, Puerto Rico
  12. 2.1 2 km NW of Galateo, Puerto Rico
  13. 1.6 26 km N of Suárez, Puerto Rico
  14. 1.9 5 km WNW of Aguas Buenas, Puerto Rico
  15. 1.7 3 km N of Orocovis, 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 2018-12-09 — it released about 12,000 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.