QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

12 km S of Jauca, Puerto Rico

· 8.0 km deep · released about 11 lb of TNT

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10 km30 km60 km120 km N Santa Isabel Municipio 11 kmSalinas Municipio 18 kmJuana Díaz Municipio 20 kmCoamo Municipio 28 kmGuayama Municipio 28 kmPonce Municipio 30 kmVillalba Municipio 33 kmAibonito Municipio 33 kmCayey Municipio 36 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
8.0 km below the surface
Felt
no reports yet
Nearest
Santa Isabel Municipio, 11 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2895 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 11 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 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 89× the energy of this one
  4. This earthquake M 1.7 about 11 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 17.8530, -66.3725. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Santa Isabel Municipio, PR 11 km (7 mi) S of here earthquakes near Santa Isabel Municipio
Salinas Municipio, PR 18 km (11 mi) SW of here earthquakes near Salinas Municipio
Juana Díaz Municipio, PR 20 km (13 mi) SE of here earthquakes near Juana Díaz Municipio
Coamo Municipio, PR 28 km (17 mi) S of here earthquakes near Coamo Municipio
Guayama Municipio, PR 28 km (18 mi) WSW of here earthquakes near Guayama Municipio
Ponce Municipio, PR 30 km (19 mi) ESE of here earthquakes near Ponce 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. 1.7 Puerto Rico region
  2. 1.9 5 km SSW of Adjuntas, Puerto Rico
  3. 2.0 5 km S of Salinas, Puerto Rico
  4. 2.5 4 km SW of Patillas, Puerto Rico
  5. 1.5 Puerto Rico region
  6. 1.8 0 km N of Guayanilla, Puerto Rico
  7. 2.6 Puerto Rico region
  8. 2.0 7 km SE of Arroyo, Puerto Rico
  9. 2.1 4 km ESE of Palmarejo, Puerto Rico
  10. 2.0 Puerto Rico region
  11. 2.0 3 km SSW of Jauca, Puerto Rico
  12. 2.3 2 km SSW of Jauca, Puerto Rico
  13. 2.0 2 km SSW of Jauca, Puerto Rico
  14. 2.0 2 km SE of Santa Isabel, Puerto Rico
  15. 2.1 1 km SSE of G. L. Garcia, 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.