QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

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 2.7 earthquake was recorded 49 km (31 mi) south-southwest of Guánica, PR, at 12:51 am AST on 9 February 2023 (04:51 UTC), 3.4 km deep.

USGS: 42 km S of Pole Ojea, Puerto Rico

12:51 am AST, Feb 9, 2023 · · 3.4 km deep · released about 340 lb of TNT

Every earthquake near Guánica Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lajas Municipio 44 kmCabo Rojo Municipio 45 kmGuánica Municipio 46 kmSan Germán Municipio 58 kmSabana Grande Municipio 59 kmGuayanilla Municipio 59 kmHormigueros Municipio 60 kmYauco Municipio 63 kmPeñuelas Municipio 66 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
12:51 am AST on 9 February 2023 ()
Where
49 km (31 mi) south-southwest of Guánica, PR · earthquakes near Guánica
Magnitude
M 2.7 (md)
Depth
3.4 km below the surface
Felt
no reports yet
Nearest
Lajas Municipio, 44 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1372 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 25 km (16 mi) from the epicentre. In Guánica, 49 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 340 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 45,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 32,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.8× the energy of this one
  4. This earthquake M 2.7 about 340 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 5.8 on 2020-01-06 — about 45,000 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 17.5952, -67.1527. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Lajas Municipio, PR 44 km (28 mi) NNE earthquakes near Lajas Municipio
Cabo Rojo Municipio, PR 45 km (28 mi) N earthquakes near Cabo Rojo Municipio
Guánica Municipio, PR 46 km (29 mi) NNE earthquakes near Guánica Municipio
San Germán Municipio, PR 58 km (36 mi) NNE earthquakes near San Germán Municipio
Sabana Grande Municipio, PR 59 km (36 mi) NNE earthquakes near Sabana Grande Municipio
Guayanilla Municipio, PR 59 km (37 mi) NE earthquakes near Guayanilla Municipio

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

Aftershocks so far

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

  1. 2.2 2 km NE of La Parguera, Puerto Rico
  2. 2.2 5 km ENE of La Parguera, Puerto Rico
  3. 2.3 4 km WSW of Guánica, Puerto Rico
  4. 2.4 8 km SE of La Parguera, Puerto Rico
  5. 2.6 6 km SE of Maria Antonia, Puerto Rico
  6. 2.6 3 km NE of La Parguera, Puerto Rico
  7. 2.5 7 km SSW of Indios, Puerto Rico
  8. 2.9 7 km SSW of Indios, Puerto Rico
  9. 3.1 7 km SE of Maria Antonia, Puerto Rico
  10. 2.5 7 km SE of Maria Antonia, Puerto Rico
  11. 2.6 Puerto Rico region
  12. 2.4 Puerto Rico region
  13. 2.5 5 km SE of La Parguera, Puerto Rico
  14. 2.5 4 km SSE of Guánica, Puerto Rico
  15. 2.5 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.