QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

Earthquake near Jauca, PR

No earthquake was likely felt in Jauca in the 24 hours to 7:36 pm AST (23:36 UTC). The last one was M 2.2, 7 km (4 mi) NNE, at 5:05 pm AST on 8 November 2026, estimated intensity II (weak) in town. Every earthquake near Jauca

This page: a magnitude 2.7 earthquake was recorded 11 km (7 mi) south of Jauca, PR, at 11:29 am AST on 19 December 2017 (15:29 UTC), 7.0 km deep.

USGS: 11 km S of Jauca, Puerto Rico

67 km (41 mi) SSW of San Juan, PR · 32 km (20 mi) ESE of Ponce, PR

11:29 am AST, Dec 19, 2017 · · 7.0 km deep · released about 350 lb of TNT

Every earthquake near Jauca Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Santa Isabel Municipio 10 kmSalinas Municipio 15 kmJuana Díaz Municipio 21 kmGuayama Municipio 25 kmCoamo Municipio 26 kmAibonito Municipio 30 kmPonce Municipio 31 kmVillalba Municipio 32 kmCayey Municipio 33 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
11:29 am AST on 19 December 2017 ()
Where
11 km (7 mi) south of Jauca, PR · earthquakes near Jauca
Magnitude
M 2.7 (md)
Depth
7.0 km below the surface
Felt
no reports yet
Nearest
Santa Isabel Municipio, 10 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3249 days ago

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

At this magnitude and depth, people at rest would likely notice it out to about 24 km (15 mi) from the epicentre. In Jauca, 11 km away, the estimate is intensity III (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Likely felt in: Santa Isabel 12 km, intensity II · Río Cañas Abajo 23 km, intensity II · Coamo 23 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 350 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 43,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 31,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.7× the energy of this one
  4. This earthquake M 2.7 about 350 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.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:

  1. 5.1 3 km W of Aguas Buenas, Puerto Rico · 49 km NNE of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 17.8693, -66.3493. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Santa Isabel Municipio, PR 10 km (6 mi) NNW earthquakes near Santa Isabel Municipio
Salinas Municipio, PR 15 km (9 mi) NE earthquakes near Salinas Municipio
Juana Díaz Municipio, PR 21 km (13 mi) NW earthquakes near Juana Díaz Municipio
Guayama Municipio, PR 25 km (16 mi) ENE earthquakes near Guayama Municipio
Coamo Municipio, PR 26 km (16 mi) N earthquakes near Coamo Municipio
Aibonito Municipio, PR 30 km (19 mi) NNE earthquakes near Aibonito Municipio

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

Aftershocks so far

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

  1. 2.2 6 km SW of Tallaboa, Puerto Rico
  2. 1.7 9 km SSW of Tallaboa, Puerto Rico
  3. 2.2 9 km SSW of Tallaboa, Puerto Rico
  4. 2.7 10 km S of Jobos, Puerto Rico
  5. 2.2 12 km S of Ponce, Puerto Rico
  6. 1.5 3 km SSW of Arroyo, Puerto Rico
  7. 2.4 5 km N of Yaurel, Puerto Rico
  8. 2.6 Puerto Rico region
  9. 3.0 4 km SE of G. L. Garcia, Puerto Rico
  10. 1.9 12 km SSE of Indios, Puerto Rico
  11. 2.2 7 km SSW of Tallaboa, Puerto Rico
  12. 1.9 11 km S of Tallaboa, Puerto Rico
  13. 1.7 10 km SSW of Tallaboa, Puerto Rico
  14. 2.2 23 km S of Indios, Puerto Rico
  15. 2.0 9 km NNE of Tallaboa, 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.