QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

Earthquake near Lluveras, PR

Yes: an earthquake was likely felt in Lluveras in the last 24 hours. M 2.1, 8 km (5 mi) SE of Lluveras, at 4:14 pm AST on 11 November 2026 (20:14 UTC); the estimated shaking in Lluveras was intensity II (weak). Every earthquake near Lluveras

This page: a magnitude 1.5 earthquake was recorded 7 km (4 mi) north-northeast of Lluveras, PR, at 6:38 am AST on 27 December 2018 (10:38 UTC), 10 km deep.

USGS: 6 km NNE of Lluveras, Puerto Rico

29 km (18 mi) WNW of Ponce, PR

6:38 am AST, Dec 27, 2018 · · 10 km deep · released about 5.6 lb of TNT

Every earthquake near Lluveras Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Yauco Municipio 3 kmSabana Grande Municipio 7 kmMaricao Municipio 11 kmGuayanilla Municipio 13 kmSan Germán Municipio 16 kmAdjuntas Municipio 16 kmGuánica Municipio 17 kmLas Marías Municipio 18 kmPeñuelas Municipio 18 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
6:38 am AST on 27 December 2018 ()
Where
7 km (4 mi) north-northeast of Lluveras, PR · earthquakes near Lluveras
Magnitude
M 1.5 (md)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Yauco Municipio, 3 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2877 days ago

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

At this magnitude and depth, people at rest would likely notice it out to about 2 km (1 mi) from the epicentre. In Lluveras, 7 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: Yauco, Sabana Grande, Liborio Negron Torres, Palomas, Fuig, Guayanilla.

How big was it?

This earthquake released about 5.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.6 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. 5.8 4 km E of Moca, Puerto Rico · 39 km NNW 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 18.0933, -66.8835. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Yauco Municipio, PR 3 km (2 mi) ESE earthquakes near Yauco Municipio
Sabana Grande Municipio, PR 7 km (4 mi) W earthquakes near Sabana Grande Municipio
Maricao Municipio, PR 11 km (7 mi) NNW earthquakes near Maricao Municipio
Guayanilla Municipio, PR 13 km (8 mi) SE earthquakes near Guayanilla Municipio
San Germán Municipio, PR 16 km (10 mi) W earthquakes near San Germán Municipio
Adjuntas Municipio, PR 16 km (10 mi) NE earthquakes near Adjuntas Municipio

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

Aftershocks so far

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

  1. 1.5 1 km SSW of Liborio Negron Torres, Puerto Rico
  2. 1.8 3 km W of Rafael Capo, Puerto Rico
  3. 2.1 2 km NE of San Germán, Puerto Rico
  4. 2.0 3 km SW of Adjuntas, Puerto Rico
  5. 2.2 4 km ENE of Isabela, Puerto Rico
  6. 1.5 6 km E of La Parguera, Puerto Rico
  7. 2.5 34 km SSE of Guánica, Puerto Rico
  8. 1.8 8 km SSW of Guánica, Puerto Rico
  9. 1.8 Puerto Rico region
  10. 2.1 2 km NNE of Mayagüez, Puerto Rico
  11. 1.8 1 km SE of Piedra Gorda, Puerto Rico
  12. 2.8 0 km NW of Rincón, Puerto Rico
  13. 1.9 0 km SW of Boquerón, Puerto Rico
  14. 2.4 18 km WNW of Puerto Real, Puerto Rico
  15. 1.8 6 km NE of La Parguera, 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.