QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0Md

Earthquake near Luyando, PR

No earthquake was likely felt in Luyando in the 24 hours to 4:06 pm AST (20:06 UTC). The last one was M 3.5, 5 km (3 mi) NE, at 12:03 am AST on 6 November 2026, estimated intensity II (weak) in town. Every earthquake near Luyando

This page: a magnitude 3.0 earthquake was recorded 4 km (2 mi) east-southeast of Luyando, PR, at 12:46 am AST on 25 February 2017 (04:46 UTC), 132 km deep.

USGS: 3 km ESE of Luyando, Puerto Rico

17 km (10 mi) N of Mayagüez, PR · 112 km (70 mi) W of San Juan, PR

12:46 am AST, Feb 25, 2017 · · 132 km deep · released about 950 lb of TNT

Every earthquake near Luyando Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Moca Municipio 6 kmAñasco Municipio 7 kmAguada Municipio 7 kmRincón Municipio 13 kmAguadilla Municipio 15 kmSan Sebastián Municipio 16 kmIsabela Municipio 19 kmLas Marías Municipio 21 kmHormigueros Municipio 24 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
12:46 am AST on 25 February 2017 ()
Where
4 km (2 mi) east-southeast of Luyando, PR · earthquakes near Luyando
Magnitude
M 3.0 (Md)
Depth
132 km below the surface
Felt
no reports yet
Nearest
Moca Municipio, 6 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3546 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 it was probably too small to be felt, even directly above it. In Luyando, 4 km away, the estimate is intensity I (not felt). 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: Moca, Las Marias, Añasco, Aguada, Espino, Aguadilla.

How big was it?

This earthquake released about 950 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 350,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 11,000× the energy of this one
  4. This earthquake M 3.0 about 950 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 10 earthquakes of M5 or more within 50 km; the five largest:

  1. 7.1 24 km NNW of San Antonio, Puerto Rico · 40 km N of this epicentre
  2. 6.4 32 km NW of Aguadilla, Puerto Rico · 40 km NW of this epicentre
  3. 6.3 6 km WNW of Aguadilla, Puerto Rico · 14 km NW of this epicentre
  4. 6.1 15 km WNW of San Antonio, Puerto Rico · 25 km NNW of this epicentre
  5. 6.1 18 km NNW of San Antonio, Puerto Rico · 33 km N 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 18.3490, -67.1238. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Moca Municipio, PR 6 km (4 mi) NE earthquakes near Moca Municipio
Añasco Municipio, PR 7 km (4 mi) S earthquakes near Añasco Municipio
Aguada Municipio, PR 7 km (4 mi) WNW earthquakes near Aguada Municipio
Rincón Municipio, PR 13 km (8 mi) W earthquakes near Rincón Municipio
Aguadilla Municipio, PR 15 km (9 mi) N earthquakes near Aguadilla Municipio
San Sebastián Municipio, PR 16 km (10 mi) E earthquakes near San Sebastián Municipio

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

Aftershocks so far

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

  1. 2.4 17 km SSW of Stella, Puerto Rico
  2. 1.9 10 km WNW of Puerto Real, Puerto Rico
  3. 1.9 5 km ENE of La Parguera, Puerto Rico
  4. 2.5 Mona Passage
  5. 2.8 36 km W of Rincón, Puerto Rico
  6. 2.5 10 km N of Hatillo, Puerto Rico
  7. 2.1 7 km WSW of Guánica, Puerto Rico
  8. 2.3 2 km NNE of Mayagüez, Puerto Rico
  9. 2.5 4 km WSW of Las Marías, Puerto Rico
  10. 2.6 34 km NW of Rincón, Puerto Rico
  11. 2.3 0 km WNW of Liborio Negron Torres, Puerto Rico
  12. 2.2 9 km WNW of Puerto Real, Puerto Rico
  13. 2.0 6 km SSW of Palmarejo, Puerto Rico
  14. 3.1 38 km NW of Rincón, Puerto Rico
  15. 3.0 39 km NW of Rincón, 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.