QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

Earthquake near Guánica, PR

Yes: an earthquake was likely felt in Guánica in the last 24 hours. M 2.3, 15 km (9 mi) ENE of Guánica, at 7:05 pm AST on 12 November 2026 (23:05 UTC); the estimated shaking in Guánica was intensity II (weak). Every earthquake near Guánica

This page: a magnitude 2.5 earthquake was recorded 46 km (29 mi) southwest of Guánica, PR, at 6:29 pm AST on 8 February 2018 (22:29 UTC), 6.0 km deep.

USGS: 38 km S of Pole Ojea, Puerto Rico

6:29 pm AST, Feb 8, 2018 · · 6.0 km deep · released about 140 lb of TNT

Every earthquake near Guánica Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lajas Municipio 40 kmCabo Rojo Municipio 41 kmGuánica Municipio 43 kmSan Germán Municipio 54 kmSabana Grande Municipio 55 kmHormigueros Municipio 56 kmGuayanilla Municipio 56 kmYauco Municipio 60 kmPeñuelas Municipio 63 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
6:29 pm AST on 8 February 2018 ()
Where
46 km (29 mi) southwest of Guánica, PR · earthquakes near Guánica
Magnitude
M 2.5 (md)
Depth
6.0 km below the surface
Felt
no reports yet
Nearest
Lajas Municipio, 40 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3199 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 21 km (13 mi) from the epicentre. In Guánica, 46 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 140 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 110,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 75,000× the energy of this one
  3. Around the size people start to feel M 3.0 6.7× the energy of this one
  4. This earthquake M 2.5 about 140 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

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 17.6320, -67.1566. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Lajas Municipio, PR 40 km (25 mi) NNE earthquakes near Lajas Municipio
Cabo Rojo Municipio, PR 41 km (25 mi) N earthquakes near Cabo Rojo Municipio
Guánica Municipio, PR 43 km (27 mi) NE earthquakes near Guánica Municipio
San Germán Municipio, PR 54 km (34 mi) NNE earthquakes near San Germán Municipio
Sabana Grande Municipio, PR 55 km (34 mi) NNE earthquakes near Sabana Grande Municipio
Hormigueros Municipio, PR 56 km (35 mi) N earthquakes near Hormigueros Municipio

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

Aftershocks so far

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

  1. 1.9 14 km SSW of Guánica, Puerto Rico
  2. 2.3 5 km SSW of La Parguera, Puerto Rico
  3. 2.1 8 km SSE of La Parguera, Puerto Rico
  4. 2.1 7 km SSE of Guánica, Puerto Rico
  5. 2.1 4 km ESE of Boquerón, Puerto Rico
  6. 2.0 7 km SSW of Indios, Puerto Rico
  7. 2.5 8 km S of Pole Ojea, Puerto Rico
  8. 2.0 9 km S of Pole Ojea, Puerto Rico
  9. 1.7 7 km WSW of La Parguera, Puerto Rico
  10. 1.6 6 km SW of Liborio Negron Torres, Puerto Rico
  11. 1.6 7 km SSW of Indios, Puerto Rico
  12. 2.4 18 km S of Indios, Puerto Rico
  13. 1.5 1 km NE of La Parguera, Puerto Rico
  14. 1.5 4 km SE of Pole Ojea, Puerto Rico
  15. 1.7 9 km S of Indios, 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.