QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

Earthquake near Central Aguirre, PR

No earthquake was likely felt in Central Aguirre in the 24 hours to 10:14 am AST (14:14 UTC). The last one was M 3.0, 23 km (14 mi) WSW, at 7:09 pm AST on 5 November 2026, estimated intensity II (weak) in town. Every earthquake near Central Aguirre

This page: a magnitude 2.5 earthquake was recorded 20 km (12 mi) south-southwest of Central Aguirre, PR, at 4:47 pm AST on 1 May 2023 (20:47 UTC), 11 km deep.

USGS: 19 km SSW of Central Aguirre, Puerto Rico

73 km (45 mi) SSW of San Juan, PR · 40 km (25 mi) SE of Ponce, PR

4:47 pm AST, May 1, 2023 · · 11 km deep · released about 190 lb of TNT

Every earthquake near Central Aguirre Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Santa Isabel Municipio 19 kmSalinas Municipio 20 kmGuayama Municipio 27 kmJuana Díaz Municipio 30 kmArroyo Municipio 34 kmCoamo Municipio 35 kmAibonito Municipio 38 kmCayey Municipio 38 kmPonce Municipio 39 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
4:47 pm AST on 1 May 2023 ()
Where
20 km (12 mi) south-southwest of Central Aguirre, PR · earthquakes near Central Aguirre
Magnitude
M 2.5 (md)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Santa Isabel Municipio, 19 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1290 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 20 km (12 mi) from the epicentre. In Central Aguirre, 20 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.

Earthquakes near other towns within 30 km: Jauca, Salinas, Las Ochenta, Santa Isabel, Coquí, Parcelas Peñuelas.

How big was it?

This earthquake released about 190 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 78,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 55,000× the energy of this one
  3. Around the size people start to feel M 3.0 4.9× the energy of this one
  4. This earthquake M 2.5 about 190 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 5.6 on 2020-01-07 — about 39,000 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 17.7953, -66.3090. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Santa Isabel Municipio, PR 19 km (12 mi) NNW earthquakes near Santa Isabel Municipio
Salinas Municipio, PR 20 km (13 mi) NNE earthquakes near Salinas Municipio
Guayama Municipio, PR 27 km (17 mi) NE earthquakes near Guayama Municipio
Juana Díaz Municipio, PR 30 km (18 mi) NW earthquakes near Juana Díaz Municipio
Arroyo Municipio, PR 34 km (21 mi) NE earthquakes near Arroyo Municipio
Coamo Municipio, PR 35 km (22 mi) N earthquakes near Coamo Municipio

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

Aftershocks so far

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

  1. 2.6 5 km SE of G. L. Garcia, Puerto Rico
  2. 2.0 3 km SE of Ponce, Puerto Rico
  3. 3.3 Puerto Rico region
  4. 2.2 3 km E of Bayamon, Puerto Rico
  5. 3.1 8 km SSW of Orocovis, Puerto Rico
  6. 2.7 7 km SE of Tallaboa, Puerto Rico
  7. 2.5 5 km SE of Tallaboa, Puerto Rico
  8. 2.0 3 km ENE of Tallaboa, Puerto Rico
  9. 2.5 3 km WSW of Santa Isabel, Puerto Rico
  10. 2.8 Puerto Rico region
  11. 2.3 4 km S of Tallaboa, Puerto Rico
  12. 2.9 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.