QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

Earthquake near La Parguera, PR

Yes: an earthquake was likely felt in La Parguera in the last 24 hours. M 2.4, 13 km (8 mi) ESE of La Parguera, at 3:43 pm AST on 11 November 2026 (19:43 UTC); the estimated shaking in La Parguera was intensity II (weak). Every earthquake near La Parguera

This page: a magnitude 3.0 earthquake was recorded 8 km (5 mi) southeast of La Parguera, PR, at 9:20 am AST on 18 October 2020 (13:20 UTC), 9.0 km deep. 1 person has reported feeling it to USGS.

USGS: 7 km SE of La Parguera, Puerto Rico

39 km (24 mi) W of Ponce, PR · 34 km (21 mi) SSE of Mayagüez, PR

9:20 am AST, Oct 18, 2020 · · 9.0 km deep · released about 800 lb of TNT

Every earthquake near La Parguera Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guánica Municipio 7 kmLajas Municipio 8 kmSabana Grande Municipio 17 kmSan Germán Municipio 20 kmGuayanilla Municipio 22 kmCabo Rojo Municipio 22 kmYauco Municipio 22 kmHormigueros Municipio 26 kmMaricao Municipio 27 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
9:20 am AST on 18 October 2020 ()
Where
8 km (5 mi) southeast of La Parguera, PR · earthquakes near La Parguera
Magnitude
M 3.0 (md)
Depth
9.0 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Guánica Municipio, 7 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2215 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, people at rest would likely notice it out to about 33 km (21 mi) from the epicentre. In La Parguera, 8 km away, the estimate is intensity III (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: San Germán 18 km, intensity II · Yauco 18 km, intensity II · Pole Ojea 22 km, intensity II · Guayanilla 23 km, intensity II · Magas Arriba 25 km, intensity II · Puerto Real 26 km, intensity II · Tallaboa 29 km, intensity II · Tallaboa Alta 33 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 800 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 6.7 420,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 19,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 13,000× the energy of this one
  4. This earthquake M 3.0 about 800 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 since 2016 was M 6.4 on 2020-01-07 — about 150,000 times the energy of this one.

Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:

  1. 5.2 19 km SW of Stella, Puerto Rico · 49 km NW of this epicentre
  2. 5.1 21 km SW of Stella, Puerto Rico · 49 km WNW 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 17.9328, -66.9868. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Guánica Municipio, PR 7 km (4 mi) ENE earthquakes near Guánica Municipio
Lajas Municipio, PR 8 km (5 mi) NW earthquakes near Lajas Municipio
Sabana Grande Municipio, PR 17 km (11 mi) NNE earthquakes near Sabana Grande Municipio
San Germán Municipio, PR 20 km (13 mi) NNW earthquakes near San Germán Municipio
Guayanilla Municipio, PR 22 km (13 mi) ENE earthquakes near Guayanilla Municipio
Cabo Rojo Municipio, PR 22 km (14 mi) WNW earthquakes near Cabo Rojo Municipio

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

Aftershocks so far

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

  1. 3.0 2 km S of Magas Arriba, Puerto Rico
  2. 2.0 6 km SSE of Indios, Puerto Rico
  3. 2.7 3 km SW of Indios, Puerto Rico
  4. 2.5 8 km ESE of La Parguera, Puerto Rico
  5. 2.1 2 km SSW of Indios, Puerto Rico
  6. 2.6 4 km SE of Maria Antonia, Puerto Rico
  7. 2.7 2 km E of Magas Arriba, Puerto Rico
  8. 3.0 5 km E of La Parguera, Puerto Rico
  9. 3.2 4 km ESE of Maria Antonia, Puerto Rico
  10. 2.5 Puerto Rico region
  11. 2.2 4 km SE of Pole Ojea, Puerto Rico
  12. 3.0 2 km SSE of Magas Arriba, Puerto Rico
  13. 3.1 3 km SSW of Indios, Puerto Rico
  14. 2.6 13 km SSE of Maria Antonia, Puerto Rico
  15. 2.9 8 km SE 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.