QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

2 km NE of Playita Cortada, Puerto Rico

· 9.0 km deep · released about 5.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Santa Isabel Municipio 6 kmJuana Díaz Municipio 7 kmCoamo Municipio 13 kmVillalba Municipio 15 kmSalinas Municipio 17 kmPonce Municipio 20 kmAibonito Municipio 22 kmOrocovis Municipio 24 kmBarranquitas 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 1.5 (md)
Depth
9.0 km below the surface
Felt
no reports yet
Nearest
Santa Isabel Municipio, 6 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2630 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 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 18.0015, -66.4215. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Santa Isabel Municipio, PR 6 km (4 mi) NNW of here earthquakes near Santa Isabel Municipio
Juana Díaz Municipio, PR 7 km (5 mi) E of here earthquakes near Juana Díaz Municipio
Coamo Municipio, PR 13 km (8 mi) SSW of here earthquakes near Coamo Municipio
Villalba Municipio, PR 15 km (10 mi) SSE of here earthquakes near Villalba Municipio
Salinas Municipio, PR 17 km (11 mi) W of here earthquakes near Salinas Municipio
Ponce Municipio, PR 20 km (12 mi) E of here earthquakes near Ponce Municipio

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

Aftershocks so far

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

  1. 1.8 7 km SW of Jayuya, Puerto Rico
  2. 2.4 12 km SSE of Ponce, Puerto Rico
  3. 2.1 12 km S of Ponce, Puerto Rico
  4. 2.4 12 km SSE of Ponce, Puerto Rico
  5. 2.6 2 km ESE of Mucarabones, Puerto Rico
  6. 1.9 Puerto Rico region
  7. 1.6 12 km SSE of Ponce, Puerto Rico
  8. 1.8 7 km SSW of Arroyo, Puerto Rico
  9. 1.5 6 km SSW of Arroyo, Puerto Rico
  10. 1.6 6 km SSW of Arroyo, Puerto Rico
  11. 2.2 12 km SSE of Ponce, Puerto Rico
  12. 2.2 Puerto Rico region
  13. 2.5 7 km SSW of Arroyo, Puerto Rico
  14. 1.5 13 km SSE of Ponce, Puerto Rico
  15. 1.5 8 km S of Salinas, 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 4.6 on 2019-03-12 — it released about 45,000 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.