Earthquake · reviewed by a seismologist
M 1.6md
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 1.6 earthquake was recorded 2 km (1 mi) north-northwest of Lluveras, PR, at 4:33 am AST on 31 May 2019 (08:33 UTC), 13 km deep.
USGS: 2 km NNW of Lluveras, Puerto Rico
31 km (19 mi) WNW of Ponce, PR · 29 km (18 mi) ESE of Mayagüez, PR
- When
- 4:33 am AST on 31 May 2019 ()
- Where
- 2 km (1 mi) north-northwest of Lluveras, PR · earthquakes near Lluveras
- Magnitude
- M 1.6 (md)
- Depth
- 13 km below the surface
- Felt
- no reports yet
- Nearest
- Sabana Grande Municipio, 5 km NW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2721 days ago
Earthquake alerts for Lluveras, PR
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Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
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, 2 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: Liborio Negron Torres, Sabana Grande, Palomas, Yauco, Fuig, Maria Antonia.
How big was it?
This earthquake released about 7.8 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,900,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
- Around the size people start to feel M 3.0 120× the energy of this one
- This earthquake M 1.6 about 7.8 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:
- 5.8 4 km E of Moca, Puerto Rico · 42 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 18.0553, -66.9120. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Sabana Grande Municipio, PR | 5 km (3 mi) | NW | earthquakes near Sabana Grande Municipio |
| Yauco Municipio, PR | 7 km (4 mi) | ENE | earthquakes near Yauco Municipio |
| Guánica Municipio, PR | 12 km (7 mi) | S | earthquakes near Guánica Municipio |
| Guayanilla Municipio, PR | 13 km (8 mi) | ESE | earthquakes near Guayanilla Municipio |
| Maricao Municipio, PR | 13 km (8 mi) | N | earthquakes near Maricao Municipio |
| San Germán Municipio, PR | 14 km (9 mi) | WNW | earthquakes near San Germán 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.
- 1.8 4 km SE of La Parguera, Puerto Rico
- 1.9 3 km NNE of Sabana Eneas, Puerto Rico
- 2.2 15 km SW of Pole Ojea, Puerto Rico
- 2.1 5 km SSW of La Parguera, Puerto Rico
- 1.8 6 km SSW of La Parguera, Puerto Rico
- 1.9 19 km SW of Stella, Puerto Rico
- 1.8 1 km NNW of Boquerón, Puerto Rico
- 2.1 2 km ENE of Rafael Hernandez, Puerto Rico
- 2.1 3 km S of Monte Grande, Puerto Rico
- 2.1 20 km SSW of Pole Ojea, Puerto Rico
- 1.8 4 km NE of Yauco, Puerto Rico
- 1.8 18 km SW of Stella, Puerto Rico
- 1.6 3 km W of Tallaboa, Puerto Rico
- 1.5 6 km NNE of Lluveras, Puerto Rico
- 1.8 14 km WSW of Puerto Real, 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.