QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

Earthquake near Jauca, PR

No earthquake was likely felt in Jauca in the 24 hours to 10:19 am AST (14:19 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 2.8 earthquake was recorded 16 km (10 mi) south-southeast of Jauca, PR, at 5:21 am AST on 4 May 2017 (09:21 UTC), 3.0 km deep.

USGS: 16 km SSE of Jauca, Puerto Rico

69 km (43 mi) SSW of San Juan, PR · 38 km (24 mi) ESE of Ponce, PR

5:21 am AST, May 4, 2017 · · 3.0 km deep · released about 490 lb of TNT

Every earthquake near Jauca Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Santa Isabel Municipio 16 kmSalinas Municipio 17 kmGuayama Municipio 25 kmJuana Díaz Municipio 26 kmCoamo Municipio 31 kmArroyo Municipio 33 kmAibonito Municipio 34 kmCayey Municipio 35 kmPonce Municipio 36 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
5:21 am AST on 4 May 2017 ()
Where
16 km (10 mi) south-southeast of Jauca, PR · earthquakes near Jauca
Magnitude
M 2.8 (md)
Depth
3.0 km below the surface
Felt
no reports yet
Nearest
Santa Isabel Municipio, 16 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3478 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 28 km (17 mi) from the epicentre. In Jauca, 16 km away, the estimate is intensity II (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 18 km, intensity II · Guayama 27 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 490 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 31,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 22,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.9× the energy of this one
  4. This earthquake M 2.8 about 490 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

The largest earthquake within 50 km since 2016 was M 4.6 on 2016-12-05 — about 480 times the energy of this one.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

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 17.8296, -66.3141. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Santa Isabel Municipio, PR 16 km (10 mi) NNW earthquakes near Santa Isabel Municipio
Salinas Municipio, PR 17 km (10 mi) NNE earthquakes near Salinas Municipio
Guayama Municipio, PR 25 km (15 mi) NE earthquakes near Guayama Municipio
Juana Díaz Municipio, PR 26 km (16 mi) NW earthquakes near Juana Díaz Municipio
Coamo Municipio, PR 31 km (19 mi) N earthquakes near Coamo Municipio
Arroyo Municipio, PR 33 km (20 mi) ENE earthquakes near Arroyo 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. 3.1 5 km NE of Orocovis, Puerto Rico
  2. 2.4 2 km W of Aibonito, Puerto Rico
  3. 3.0 6 km NW of Palomas, Puerto Rico
  4. 2.0 9 km SE of Indios, Puerto Rico
  5. 2.4 4 km SE of Salinas, Puerto Rico
  6. 3.0 4 km SE of Salinas, Puerto Rico
  7. 2.4 3 km S of Coco, Puerto Rico
  8. 1.9 3 km SE of Salinas, Puerto Rico
  9. 2.2 2 km NW of Tallaboa, Puerto Rico
  10. 3.0 0 km ENE of Río Cañas Abajo, Puerto Rico
  11. 2.5 1 km ENE of Salinas, Puerto Rico
  12. 2.3 10 km S of Emajagua, Puerto Rico
  13. 2.1 16 km S of Ponce, Puerto Rico
  14. 2.0 7 km SSW of Tallaboa, Puerto Rico
  15. 2.7 2 km ESE of Magas Arriba, 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.