QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3md

Earthquake near Guánica, PR

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

This page: a magnitude 3.3 earthquake was recorded 17 km (11 mi) south-southwest of Guánica, PR, at 2:40 am AST on 17 February 2022 (06:40 UTC), 9.4 km deep. 1 person has reported feeling it to USGS.

USGS: 17 km SSW of Guánica, Puerto Rico

39 km (24 mi) WSW of Ponce, PR

2:40 am AST, Feb 17, 2022 · · 9.4 km deep · released about 1.1 tons of TNT

Every earthquake near Guánica Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guánica Municipio 15 kmLajas Municipio 21 kmGuayanilla Municipio 26 kmSabana Grande Municipio 30 kmYauco Municipio 31 kmCabo Rojo Municipio 32 kmPeñuelas Municipio 32 kmSan Germán Municipio 34 kmMaricao Municipio 40 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
2:40 am AST on 17 February 2022 ()
Where
17 km (11 mi) south-southwest of Guánica, PR · earthquakes near Guánica
Magnitude
M 3.3 (md)
Depth
9.4 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Guánica Municipio, 15 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1656 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 48 km (30 mi) from the epicentre. In Guánica, 17 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: Yauco 26 km, intensity II · Guayanilla 27 km, intensity II · Magas Arriba 29 km, intensity II · Tallaboa 31 km, intensity II · Pole Ojea 31 km, intensity II · San Germán 31 km, intensity II · Tallaboa Alta 36 km, intensity II · Puerto Real 39 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 1.1 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 150,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 6,700× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,700× the energy of this one
  4. This earthquake M 3.3 about 1.1 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.4× more

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 53,000 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 17.8185, -66.9425. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Guánica Municipio, PR 15 km (9 mi) N earthquakes near Guánica Municipio
Lajas Municipio, PR 21 km (13 mi) NNW earthquakes near Lajas Municipio
Guayanilla Municipio, PR 26 km (16 mi) NE earthquakes near Guayanilla Municipio
Sabana Grande Municipio, PR 30 km (18 mi) N earthquakes near Sabana Grande Municipio
Yauco Municipio, PR 31 km (19 mi) NNE earthquakes near Yauco Municipio
Cabo Rojo Municipio, PR 32 km (20 mi) NW earthquakes near Cabo Rojo Municipio

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

Aftershocks so far

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

  1. 1.9 3 km E of La Parguera, Puerto Rico
  2. 2.4 1 km S of Maria Antonia, Puerto Rico
  3. 1.9 16 km SSW of Guánica, Puerto Rico
  4. 2.2 4 km SW of Guánica, Puerto Rico
  5. 2.1 12 km SSE of Ponce, Puerto Rico
  6. 2.0 14 km SSE of Ponce, Puerto Rico
  7. 2.3 14 km SSE of Guánica, Puerto Rico
  8. 2.7 10 km SSE of Guánica, Puerto Rico
  9. 2.2 11 km SSE of Guánica, Puerto Rico
  10. 2.4 7 km SSE of Guánica, Puerto Rico
  11. 2.0 9 km SSE of Guánica, Puerto Rico
  12. 1.6 1 km SE of Yauco, Puerto Rico
  13. 3.1 10 km SSE of Guánica, Puerto Rico
  14. 2.1 10 km SSE of Guánica, Puerto Rico
  15. 1.7 Puerto Rico region

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.