QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

10 km SSW of Potala Pastillo, Puerto Rico

· 16 km deep · released about 7.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Juana Díaz Municipio 12 kmPonce Municipio 12 kmSanta Isabel Municipio 18 kmPeñuelas Municipio 23 kmVillalba Municipio 26 kmGuayanilla Municipio 29 kmCoamo Municipio 30 kmSalinas Municipio 31 kmJayuya Municipio 34 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 1.6 (md)
Depth
16 km below the surface
Felt
no reports yet
Nearest
Juana Díaz Municipio, 12 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2548 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 7.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.6 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 17.9060, -66.5473. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Juana Díaz Municipio, PR 12 km (7 mi) SSW of here earthquakes near Juana Díaz Municipio
Ponce Municipio, PR 12 km (8 mi) SSE of here earthquakes near Ponce Municipio
Santa Isabel Municipio, PR 18 km (11 mi) WSW of here earthquakes near Santa Isabel Municipio
Peñuelas Municipio, PR 23 km (15 mi) SE of here earthquakes near Peñuelas Municipio
Villalba Municipio, PR 26 km (16 mi) SSW of here earthquakes near Villalba Municipio
Guayanilla Municipio, PR 29 km (18 mi) ESE of here earthquakes near Guayanilla Municipio

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

Aftershocks so far

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

  1. 1.6 13 km S of Ponce, Puerto Rico
  2. 2.0 1 km SSE of Las Ollas, Puerto Rico
  3. 1.5 12 km SSE of Ponce, Puerto Rico
  4. 1.5 7 km ESE of La Parguera, Puerto Rico
  5. 1.7 10 km WNW of Orocovis, Puerto Rico
  6. 2.2 12 km S of Ponce, Puerto Rico
  7. 1.9 4 km E of Guayabal, Puerto Rico
  8. 2.3 12 km SW of Potala Pastillo, Puerto Rico
  9. 2.0 Puerto Rico region
  10. 1.9 3 km SE of Utuado, Puerto Rico
  11. 1.9 13 km SSE of Ponce, Puerto Rico
  12. 1.7 1 km WSW of Río Cañas Abajo, Puerto Rico
  13. 1.6 10 km NW of Coto Laurel, Puerto Rico
  14. 2.2 13 km SSE of Ponce, Puerto Rico
  15. 1.6 11 km ESE of Maricao, 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 32,000 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.