QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

20 km SSE of Tallaboa, Puerto Rico

· 13 km deep · released about 7.8 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ponce Municipio 21 kmPeñuelas Municipio 25 kmJuana Díaz Municipio 26 kmGuayanilla Municipio 26 kmSanta Isabel Municipio 31 kmGuánica Municipio 33 kmYauco Municipio 37 kmVillalba Municipio 39 kmAdjuntas Municipio 42 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
13 km below the surface
Felt
no reports yet
Nearest
Ponce Municipio, 21 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2797 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 7.8 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 1,900,000× 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 3.0 120× the energy of this one
  4. This earthquake M 1.6 about 7.8 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 17.8191, -66.6448. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ponce Municipio, PR 21 km (13 mi) S of here earthquakes near Ponce Municipio
Peñuelas Municipio, PR 25 km (15 mi) SSE of here earthquakes near Peñuelas Municipio
Juana Díaz Municipio, PR 26 km (16 mi) SW of here earthquakes near Juana Díaz Municipio
Guayanilla Municipio, PR 26 km (16 mi) SE of here earthquakes near Guayanilla Municipio
Santa Isabel Municipio, PR 31 km (19 mi) WSW of here earthquakes near Santa Isabel Municipio
Guánica Municipio, PR 33 km (20 mi) ESE of here earthquakes near Guánica Municipio

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

Aftershocks so far

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

  1. 2.1 1 km SSE of Palomas, Puerto Rico
  2. 1.6 1 km NNW of Jayuya, Puerto Rico
  3. 2.3 1 km NNW of Indios, Puerto Rico
  4. 1.9 5 km E of La Parguera, Puerto Rico
  5. 1.9 4 km N of Palmarejo, Puerto Rico
  6. 2.3 1 km SE of Maria Antonia, Puerto Rico
  7. 1.9 1 km ENE of El Ojo, Puerto Rico
  8. 1.7 Puerto Rico region
  9. 1.9 2 km E of Magas Arriba, Puerto Rico
  10. 1.8 14 km SSW of Guánica, Puerto Rico
  11. 1.9 4 km NE of La Parguera, Puerto Rico
  12. 1.7 6 km E of La Parguera, Puerto Rico
  13. 2.0 2 km ESE of Magas Arriba, Puerto Rico
  14. 2.1 15 km S of La Parguera, Puerto Rico
  15. 1.7 6 km SSE of Indios, 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.