QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

Earthquake near Jauca, PR

No earthquake was likely felt in Jauca in the 24 hours to 12:12 pm AST (16:12 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 1.9 earthquake was recorded 12 km (7 mi) south-southeast of Jauca, PR, at 3:43 am AST on 11 June 2018 (07:43 UTC), 30 km deep.

USGS: 11 km SSE of Jauca, Puerto Rico

65 km (41 mi) SSW of San Juan, PR · 34 km (21 mi) ESE of Ponce, PR

3:43 am AST, Jun 11, 2018 · · 30 km deep · released about 21 lb of TNT

Every earthquake near Jauca Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Santa Isabel Municipio 11 kmSalinas Municipio 13 kmJuana Díaz Municipio 22 kmGuayama Municipio 23 kmCoamo Municipio 26 kmAibonito Municipio 29 kmCayey Municipio 32 kmArroyo Municipio 32 kmVillalba 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
3:43 am AST on 11 June 2018 ()
Where
12 km (7 mi) south-southeast of Jauca, PR · earthquakes near Jauca
Magnitude
M 1.9 (md)
Depth
30 km below the surface
Felt
no reports yet
Nearest
Santa Isabel Municipio, 11 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3075 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth it was probably too small to be felt, even directly above it. In Jauca, 12 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.

Earthquakes near other towns within 30 km: Salinas, Las Ochenta, Santa Isabel, Parcelas Peñuelas, Central Aguirre, Coquí.

How big was it?

This earthquake released about 21 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 5.8 730,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 520,000× the energy of this one
  3. Around the size people start to feel M 3.0 46× the energy of this one
  4. This earthquake M 1.9 about 21 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 12,000 times the energy of this one.

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 · 48 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 17.8721, -66.3266. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Santa Isabel Municipio, PR 11 km (7 mi) NW earthquakes near Santa Isabel Municipio
Salinas Municipio, PR 13 km (8 mi) NNE earthquakes near Salinas Municipio
Juana Díaz Municipio, PR 22 km (14 mi) NW earthquakes near Juana Díaz Municipio
Guayama Municipio, PR 23 km (14 mi) ENE earthquakes near Guayama Municipio
Coamo Municipio, PR 26 km (16 mi) N earthquakes near Coamo Municipio
Aibonito Municipio, PR 29 km (18 mi) NNE earthquakes near Aibonito Municipio

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

Aftershocks so far

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

  1. 3.0 10 km SSW of Tallaboa, Puerto Rico
  2. 2.1 19 km S of Tallaboa, Puerto Rico
  3. 2.2 18 km S of Tallaboa, Puerto Rico
  4. 2.2 19 km S of Tallaboa, Puerto Rico
  5. 2.0 1 km N of Bayamon, Puerto Rico
  6. 1.7 8 km NNE of Emajagua, Puerto Rico
  7. 2.7 8 km S of Palo Seco, Puerto Rico
  8. 1.8 10 km SSE of Tallaboa, Puerto Rico
  9. 1.7 10 km S of Emajagua, Puerto Rico
  10. 3.0 11 km S of Emajagua, Puerto Rico
  11. 2.5 7 km E of Jayuya, Puerto Rico
  12. 2.3 11 km SSE of Indios, Puerto Rico
  13. 2.4 22 km S of Tallaboa, Puerto Rico
  14. 2.0 24 km S of Tallaboa, Puerto Rico
  15. 2.3 27 km SSW of Potala Pastillo, 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.