QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

Earthquake near Guayanilla, PR

Yes: an earthquake was likely felt in Guayanilla in the last 24 hours. M 2.1, 7 km (4 mi) WSW of Guayanilla, at 4:14 pm AST on 11 November 2026 (20:14 UTC); the estimated shaking in Guayanilla was intensity II (weak). Every earthquake near Guayanilla

This page: a magnitude 2.4 earthquake was recorded 2 km (1 mi) south-southwest of Guayanilla, PR, at 6:48 am AST on 22 April 2020 (10:48 UTC), 14 km deep.

USGS: 2 km SSW of Guayanilla, Puerto Rico

18 km (11 mi) W of Ponce, PR

6:48 am AST, Apr 22, 2020 · · 14 km deep · released about 120 lb of TNT

Every earthquake near Guayanilla Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guayanilla Municipio 1 kmPeñuelas Municipio 8 kmYauco Municipio 11 kmGuánica Municipio 15 kmSabana Grande Municipio 18 kmPonce Municipio 20 kmAdjuntas Municipio 21 kmMaricao Municipio 24 kmLajas Municipio 26 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
6:48 am AST on 22 April 2020 ()
Where
2 km (1 mi) south-southwest of Guayanilla, PR · earthquakes near Guayanilla
Magnitude
M 2.4 (md)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Guayanilla Municipio, 1 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2394 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 16 km (10 mi) from the epicentre. In Guayanilla, 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.

Likely felt in: Guayanilla 2 km, intensity II · Magas Arriba 4 km, intensity II · Yauco 7 km, intensity II · Tallaboa 9 km, intensity II · Tallaboa Alta 12 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 120 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 89,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.9× the energy of this one
  4. This earthquake M 2.4 about 120 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 1,000,000 times the energy of this one.

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 18.0001, -66.7970. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Guayanilla Municipio, PR 1 km (0 mi) NNW earthquakes near Guayanilla Municipio
Peñuelas Municipio, PR 8 km (5 mi) ENE earthquakes near Peñuelas Municipio
Yauco Municipio, PR 11 km (7 mi) NW earthquakes near Yauco Municipio
Guánica Municipio, PR 15 km (9 mi) WSW earthquakes near Guánica Municipio
Sabana Grande Municipio, PR 18 km (11 mi) WNW earthquakes near Sabana Grande Municipio
Ponce Municipio, PR 20 km (13 mi) E earthquakes near Ponce 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. 2.6 2 km SSE of Indios, Puerto Rico
  2. 2.4 2 km WSW of Indios, Puerto Rico
  3. 2.3 3 km S of Indios, Puerto Rico
  4. 2.4 1 km E of Magas Arriba, Puerto Rico
  5. 2.5 9 km SSE of Guánica, Puerto Rico
  6. 3.1 10 km SSE of Indios, Puerto Rico
  7. 2.4 13 km SSE of Maria Antonia, Puerto Rico
  8. 3.1 3 km WSW of Fuig, Puerto Rico
  9. 2.8 3 km ESE of Magas Arriba, Puerto Rico
  10. 3.2 6 km ESE of La Parguera, Puerto Rico
  11. 3.1 5 km S of Guánica, Puerto Rico
  12. 2.6 6 km SE of La Parguera, Puerto Rico
  13. 2.1 10 km S of Indios, Puerto Rico
  14. 2.9 6 km ESE of La Parguera, Puerto Rico
  15. 3.3 5 km ENE of La Parguera, 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.