QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

3 km SSW of Salinas, Puerto Rico

· 14 km deep · released about 20 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Salinas Municipio 5 kmSanta Isabel Municipio 9 kmCoamo Municipio 18 kmGuayama Municipio 18 kmJuana Díaz Municipio 20 kmAibonito Municipio 21 kmCayey Municipio 24 kmVillalba Municipio 27 kmBarranquitas Municipio 28 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
14 km below the surface
Felt
no reports yet
Nearest
Salinas Municipio, 5 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 231 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 20 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 5.8 760,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 540,000× the energy of this one
  3. Around the size people start to feel M 3.0 48× the energy of this one
  4. This earthquake M 1.9 about 20 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 17.9497, -66.3067. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Salinas Municipio, PR 5 km (3 mi) WSW of here earthquakes near Salinas Municipio
Santa Isabel Municipio, PR 9 km (5 mi) E of here earthquakes near Santa Isabel Municipio
Coamo Municipio, PR 18 km (11 mi) SSE of here earthquakes near Coamo Municipio
Guayama Municipio, PR 18 km (11 mi) W of here earthquakes near Guayama Municipio
Juana Díaz Municipio, PR 20 km (13 mi) ESE of here earthquakes near Juana Díaz Municipio
Aibonito Municipio, PR 21 km (13 mi) SSW of here earthquakes near Aibonito Municipio

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

Aftershocks so far

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

  1. 2.3 6 km NNE of Tallaboa Alta, Puerto Rico
  2. 1.6 1 km SW of G. L. Garcia, Puerto Rico
  3. 1.8 2 km S of Magas Arriba, Puerto Rico
  4. 1.8 7 km ESE of G. L. Garcia, Puerto Rico
  5. 2.5 3 km ENE of Magas Arriba, Puerto Rico
  6. 2.4 3 km SSE of Salinas, Puerto Rico
  7. 1.7 1 km WSW of G. L. Garcia, Puerto Rico
  8. 2.0 3 km SE of Tallaboa Alta, Puerto Rico
  9. 1.7 2 km NW of Las Ollas, Puerto Rico
  10. 2.3 23 km S of Ponce, Puerto Rico
  11. 2.0 1 km SSE of Cidra, Puerto Rico
  12. 3.2 3 km SSW of Tallaboa, Puerto Rico
  13. 1.9 3 km WNW of Orocovis, Puerto Rico
  14. 1.9 2 km NE of Magas Arriba, Puerto Rico
  15. 2.4 1 km WSW of Las Ochenta, 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 5.6 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.