QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

19 km SSW of Potala Pastillo, Puerto Rico

· 12 km deep · released about 320 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ponce Municipio 20 kmJuana Díaz Municipio 21 kmSanta Isabel Municipio 24 kmPeñuelas Municipio 28 kmGuayanilla Municipio 31 kmVillalba Municipio 35 kmSalinas Municipio 36 kmCoamo Municipio 38 kmGuánica Municipio 40 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 2.7 (md)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Ponce Municipio, 20 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1629 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 320 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 48,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 34,000× the energy of this one
  3. Around the size people start to feel M 3.0 3× the energy of this one
  4. This earthquake M 2.7 about 320 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 17.8275, -66.5717. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ponce Municipio, PR 20 km (12 mi) S of here earthquakes near Ponce Municipio
Juana Díaz Municipio, PR 21 km (13 mi) SSW of here earthquakes near Juana Díaz Municipio
Santa Isabel Municipio, PR 24 km (15 mi) SW of here earthquakes near Santa Isabel Municipio
Peñuelas Municipio, PR 28 km (17 mi) SE of here earthquakes near Peñuelas Municipio
Guayanilla Municipio, PR 31 km (19 mi) SE of here earthquakes near Guayanilla Municipio
Villalba Municipio, PR 35 km (22 mi) SSW of here earthquakes near Villalba Municipio

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

Aftershocks so far

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

  1. 2.1 Puerto Rico region
  2. 2.1 0 km NNW of Fuig, Puerto Rico
  3. 2.1 2 km WNW of Indios, Puerto Rico
  4. 2.5 5 km E of La Parguera, Puerto Rico
  5. 2.8 15 km S of La Parguera, Puerto Rico
  6. 2.5 1 km E of Palomas, Puerto Rico
  7. 2.2 3 km SW of Indios, Puerto Rico
  8. 1.8 3 km SE of Indios, Puerto Rico
  9. 1.9 2 km NNE of Guayanilla, Puerto Rico
  10. 2.1 7 km SW of Guánica, Puerto Rico
  11. 2.5 2 km WNW of Guayanilla, Puerto Rico
  12. 2.3 5 km WSW of Guánica, Puerto Rico
  13. 1.8 5 km WSW of Guánica, Puerto Rico
  14. 2.9 5 km WSW of Guánica, Puerto Rico
  15. 1.8 4 km WSW of Fuig, 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 6.4 on 2020-01-07 — it released about 380,000 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.