QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

Earthquake near Yauco, PR

Yes: an earthquake was likely felt in Yauco in the last 24 hours. M 2.1, 5 km (3 mi) S of Yauco, at 4:14 pm AST on 11 November 2026 (20:14 UTC); the estimated shaking in Yauco was intensity II (weak). Every earthquake near Yauco

This page: a magnitude 2.7 earthquake was recorded 45 km (28 mi) south of Yauco, PR, at 8:04 pm AST on 1 December 2018 (00:04 UTC), 73 km deep.

USGS: 37 km S of Guánica, Puerto Rico

50 km (31 mi) SW of Ponce, PR · 123 km (76 mi) SW of San Juan, PR

8:04 pm AST, Dec 1, 2018 · · 73 km deep · released about 390 lb of TNT

Every earthquake near Yauco Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guánica Municipio 36 kmLajas Municipio 42 kmGuayanilla Municipio 43 kmPeñuelas Municipio 47 kmYauco Municipio 51 kmSabana Grande Municipio 51 kmPonce Municipio 51 kmCabo Rojo Municipio 51 kmSan Germán Municipio 55 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
8:04 pm AST on 1 December 2018 ()
Where
45 km (28 mi) south of Yauco, PR · earthquakes near Yauco
Magnitude
M 2.7 (md)
Depth
73 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 36 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2902 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 Yauco, 45 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.

How big was it?

This earthquake released about 390 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 39,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 28,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.5× the energy of this one
  4. This earthquake M 2.7 about 390 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 since 1900 lists no earthquake of M5 or more within 50 km.

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 17.6300, -66.8888. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Guánica Municipio, PR 36 km (22 mi) N earthquakes near Guánica Municipio
Lajas Municipio, PR 42 km (26 mi) NNW earthquakes near Lajas Municipio
Guayanilla Municipio, PR 43 km (27 mi) NNE earthquakes near Guayanilla Municipio
Peñuelas Municipio, PR 47 km (29 mi) NNE earthquakes near Peñuelas Municipio
Yauco Municipio, PR 51 km (32 mi) N earthquakes near Yauco Municipio
Sabana Grande Municipio, PR 51 km (32 mi) N earthquakes near Sabana Grande Municipio

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

Aftershocks so far

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

  1. 1.8 2 km SSW of Tallaboa, Puerto Rico
  2. 1.9 9 km S of Tallaboa, Puerto Rico
  3. 1.8 8 km S of Tallaboa, Puerto Rico
  4. 1.9 9 km S of Tallaboa, Puerto Rico
  5. 1.9 6 km SSW of Tallaboa, Puerto Rico
  6. 1.9 8 km S of Tallaboa, Puerto Rico
  7. 1.7 7 km SSW of Tallaboa, Puerto Rico
  8. 1.9 8 km S of Tallaboa, Puerto Rico
  9. 1.6 Puerto Rico region
  10. 1.7 6 km S of Tallaboa, Puerto Rico
  11. 1.9 8 km S of Tallaboa, Puerto Rico
  12. 1.7 7 km SSW of Tallaboa, Puerto Rico
  13. 1.6 1 km W of Tallaboa, Puerto Rico
  14. 1.8 8 km S of Tallaboa, Puerto Rico
  15. 1.9 10 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.