QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

5 km SW of Playita Cortada, Puerto Rico

· 24 km deep · released about 25 lb of TNT

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10 km30 km60 km120 km N Juana Díaz Municipio 6 kmSanta Isabel Municipio 9 kmPonce Municipio 15 kmVillalba Municipio 21 kmCoamo Municipio 21 kmSalinas Municipio 22 kmPeñuelas Municipio 28 kmAibonito Municipio 30 kmOrocovis Municipio 31 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 1.9 (md)
Depth
24 km below the surface
Felt
no reports yet
Nearest
Juana Díaz Municipio, 6 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2953 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 25 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 620,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 440,000× the energy of this one
  3. Around the size people start to feel M 3.0 39× the energy of this one
  4. This earthquake M 1.9 about 25 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 17.9461, -66.4726. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Juana Díaz Municipio, PR 6 km (4 mi) SSE of here earthquakes near Juana Díaz Municipio
Santa Isabel Municipio, PR 9 km (6 mi) W of here earthquakes near Santa Isabel Municipio
Ponce Municipio, PR 15 km (10 mi) ESE of here earthquakes near Ponce Municipio
Villalba Municipio, PR 21 km (13 mi) S of here earthquakes near Villalba Municipio
Coamo Municipio, PR 21 km (13 mi) SW of here earthquakes near Coamo Municipio
Salinas Municipio, PR 22 km (14 mi) W of here earthquakes near Salinas Municipio

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

Aftershocks so far

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

  1. 1.9 4 km SW of Adjuntas, Puerto Rico
  2. 1.9 4 km SW of Adjuntas, Puerto Rico
  3. 1.9 8 km NW of Santo Domingo, Puerto Rico
  4. 1.8 4 km NNE of Yauco, Puerto Rico
  5. 1.9 1 km N of Las Ochenta, Puerto Rico
  6. 2.2 5 km ESE of G. L. Garcia, Puerto Rico
  7. 2.0 0 km NW of Playita Cortada, Puerto Rico
  8. 2.2 1 km ESE of Potala Pastillo, Puerto Rico
  9. 1.8 1 km SSE of Adjuntas, Puerto Rico
  10. 2.1 3 km ESE of Cayey, Puerto Rico
  11. 1.8 5 km SW of Adjuntas, Puerto Rico
  12. 2.4 2 km SSE of Cidra, Puerto Rico
  13. 2.5 17 km SSE of Jobos, Puerto Rico
  14. 2.0 9 km SSE of Indios, Puerto Rico
  15. 2.5 3 km WSW of Sumidero, 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.