QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

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 1.6 earthquake was recorded 4 km (3 mi) south-southeast of Yauco, PR, at 6:33 pm AST on 30 January 2021 (22:33 UTC), 8.0 km deep.

USGS: Puerto Rico region

22 km (14 mi) W of Ponce, PR

6:33 pm AST, Jan 30, 2021 · · 8.0 km deep · released about 7.6 lb of TNT

Every earthquake near Yauco Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guayanilla Municipio 4 kmYauco Municipio 10 kmGuánica Municipio 11 kmPeñuelas Municipio 11 kmSabana Grande Municipio 15 kmAdjuntas Municipio 22 kmLajas Municipio 22 kmMaricao Municipio 22 kmPonce 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
6:33 pm AST on 30 January 2021 ()
Where
4 km (3 mi) south-southeast of Yauco, PR · earthquakes near Yauco
Magnitude
M 1.6 (md)
Depth
8.0 km below the surface
Felt
no reports yet
Nearest
Guayanilla Municipio, 4 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1427 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 8 km (5 mi) from the epicentre. In Yauco, 4 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.

Likely felt in: Yauco 4 km, intensity II · Guayanilla 5 km, intensity II · Magas Arriba 7 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 7.6 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.

  1. Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.6 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

The largest earthquake within 50 km in our catalogue was M 6.4 on 2020-01-07 — about 16,000,000 times the energy of this one.

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 18.0000, -66.8325. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Guayanilla Municipio, PR 4 km (2 mi) E earthquakes near Guayanilla Municipio
Yauco Municipio, PR 10 km (6 mi) NNW earthquakes near Yauco Municipio
Guánica Municipio, PR 11 km (7 mi) WSW earthquakes near Guánica Municipio
Peñuelas Municipio, PR 11 km (7 mi) ENE earthquakes near Peñuelas Municipio
Sabana Grande Municipio, PR 15 km (10 mi) NW earthquakes near Sabana Grande Municipio
Adjuntas Municipio, PR 22 km (13 mi) NNE earthquakes near Adjuntas Municipio

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

Aftershocks so far

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

  1. 3.2 4 km ESE of Maria Antonia, Puerto Rico
  2. 2.4 4 km S of Guánica, Puerto Rico
  3. 2.2 6 km SSE of Guánica, Puerto Rico
  4. 1.9 5 km WSW of Fuig, Puerto Rico
  5. 2.0 4 km WSW of Guánica, Puerto Rico
  6. 3.1 5 km E of La Parguera, Puerto Rico
  7. 2.3 4 km ESE of Maria Antonia, Puerto Rico
  8. 2.5 2 km S of Guánica, Puerto Rico
  9. 2.1 5 km SE of Maria Antonia, Puerto Rico
  10. 2.6 9 km S of Pole Ojea, Puerto Rico
  11. 2.4 5 km WSW of Guánica, Puerto Rico
  12. 2.3 8 km SE of Maria Antonia, Puerto Rico
  13. 1.5 6 km SW of La Parguera, Puerto Rico
  14. 1.9 4 km WSW of Guánica, Puerto Rico
  15. 1.9 4 km SSE of Maria Antonia, 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.