QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

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 3.0 earthquake was recorded 47 km (29 mi) south-southwest of Guánica, PR, at 6:52 am AST on 22 July 2026 (10:52 UTC), 7.8 km deep.

USGS: 40 km S of Pole Ojea, Puerto Rico

6:52 am AST, Jul 22, 2026 · · 7.8 km deep · released about 1,100 lb of TNT

Every earthquake near Guánica Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lajas Municipio 42 kmCabo Rojo Municipio 43 kmGuánica Municipio 44 kmSan Germán Municipio 56 kmSabana Grande Municipio 56 kmGuayanilla Municipio 56 kmHormigueros Municipio 58 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
6:52 am AST on 22 July 2026 ()
Where
47 km (29 mi) south-southwest of Guánica, PR · earthquakes near Guánica
Magnitude
M 3.0 (md)
Depth
7.8 km below the surface
Felt
no reports yet
Nearest
Lajas Municipio, 42 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 92 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 37 km (23 mi) from the epicentre. In Guánica, 47 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 1,100 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 6.7 320,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 14,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 10,000× the energy of this one
  4. This earthquake M 3.0 about 1,100 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 5.9 on 2020-01-11 — about 20,000 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 17.6138, -67.1370. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Lajas Municipio, PR 42 km (26 mi) NNE earthquakes near Lajas Municipio
Cabo Rojo Municipio, PR 43 km (27 mi) N earthquakes near Cabo Rojo Municipio
Guánica Municipio, PR 44 km (27 mi) NNE earthquakes near Guánica Municipio
San Germán Municipio, PR 56 km (35 mi) N earthquakes near San Germán Municipio
Sabana Grande Municipio, PR 56 km (35 mi) NNE earthquakes near Sabana Grande Municipio
Guayanilla Municipio, PR 56 km (35 mi) NE earthquakes near Guayanilla Municipio

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

Aftershocks so far

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

  1. 2.2 4 km ESE of Maria Antonia, Puerto Rico
  2. 1.8 7 km SE of Maria Antonia, Puerto Rico
  3. 2.3 5 km SSW of Indios, Puerto Rico
  4. 1.8 5 km SSW of Indios, Puerto Rico
  5. 2.0 5 km SE of Maria Antonia, Puerto Rico
  6. 1.6 4 km SW of Indios, Puerto Rico
  7. 1.8 4 km SSW of Indios, Puerto Rico
  8. 1.9 4 km SSW of Indios, Puerto Rico
  9. 3.5 4 km SSW of Indios, Puerto Rico
  10. 2.3 4 km SSW of Indios, Puerto Rico
  11. 2.1 4 km SSW of Indios, Puerto Rico
  12. 1.8 3 km SW of Fuig, Puerto Rico
  13. 2.5 6 km SSE of Maria Antonia, Puerto Rico
  14. 1.9 1 km NNE of Fuig, Puerto Rico
  15. 2.1 1 km S of Guánica, 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.