QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

Earthquake near Lluveras, PR

No earthquake was likely felt in Lluveras in the 24 hours to 12:52 pm AST (16:52 UTC). The last one was M 2.1, 12 km (7 mi) E, at 4:39 pm AST on 9 November 2026, estimated intensity II (weak) in town. Every earthquake near Lluveras

This page: a magnitude 2.1 earthquake was recorded 5 km (3 mi) north of Lluveras, PR, at 1:27 pm AST on 1 February 2018 (17:27 UTC), 21 km deep.

USGS: 5 km N of Lluveras, Puerto Rico

31 km (19 mi) WNW of Ponce, PR · 28 km (18 mi) ESE of Mayagüez, PR

1:27 pm AST, Feb 1, 2018 · · 21 km deep · released about 51 lb of TNT

Every earthquake near Lluveras Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Yauco Municipio 5 kmSabana Grande Municipio 5 kmMaricao Municipio 10 kmGuayanilla Municipio 14 kmSan Germán Municipio 14 kmGuánica Municipio 15 kmLas Marías Municipio 18 kmAdjuntas Municipio 19 kmLajas Municipio 19 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
1:27 pm AST on 1 February 2018 ()
Where
5 km (3 mi) north of Lluveras, PR · earthquakes near Lluveras
Magnitude
M 2.1 (md)
Depth
21 km below the surface
Felt
no reports yet
Nearest
Yauco Municipio, 5 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3205 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 Lluveras, 5 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: Sabana Grande, Liborio Negron Torres, Yauco, Palomas, Fuig, Maria Antonia.

How big was it?

This earthquake released about 51 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 210,000× the energy of this one
  3. Around the size people start to feel M 3.0 19× the energy of this one
  4. This earthquake M 2.1 about 51 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 18.0858, -66.9026. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Yauco Municipio, PR 5 km (3 mi) E earthquakes near Yauco Municipio
Sabana Grande Municipio, PR 5 km (3 mi) W earthquakes near Sabana Grande Municipio
Maricao Municipio, PR 10 km (6 mi) NNW earthquakes near Maricao Municipio
Guayanilla Municipio, PR 14 km (9 mi) SE earthquakes near Guayanilla Municipio
San Germán Municipio, PR 14 km (9 mi) W earthquakes near San Germán Municipio
Guánica Municipio, PR 15 km (10 mi) S earthquakes near Guánica Municipio

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

Aftershocks so far

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

  1. 1.7 3 km E of Sabana Grande, Puerto Rico
  2. 2.1 16 km SSE of Pole Ojea, Puerto Rico
  3. 2.2 25 km SSE of Maria Antonia, Puerto Rico
  4. 1.9 9 km NNE of Yauco, Puerto Rico
  5. 2.0 6 km E of La Parguera, Puerto Rico
  6. 1.9 7 km WSW of Orocovis, Puerto Rico
  7. 2.5 1 km WSW of Liborio Negron Torres, Puerto Rico
  8. 2.1 16 km SSW of La Parguera, Puerto Rico
  9. 2.3 3 km SW of La Parguera, Puerto Rico
  10. 2.4 16 km SSW of Stella, Puerto Rico
  11. 1.7 10 km SSW of Pole Ojea, Puerto Rico
  12. 2.4 13 km SSW of Guánica, Puerto Rico
  13. 2.5 4 km ESE of Mayagüez, Puerto Rico
  14. 2.2 5 km SSW of Adjuntas, Puerto Rico
  15. 2.0 14 km S 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.