QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

Earthquake near Central Aguirre, PR

No earthquake was likely felt in Central Aguirre in the 24 hours to 5:30 pm AST (21:30 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 2.0 earthquake was recorded 10 km (6 mi) south-southwest of Central Aguirre, PR, at 1:39 am AST on 8 March 2018 (05:39 UTC), 40 km deep.

USGS: 9 km SSW of Central Aguirre, Puerto Rico

63 km (39 mi) SSW of San Juan, PR · 42 km (26 mi) ESE of Ponce, PR

1:39 am AST, Mar 8, 2018 · · 40 km deep · released about 35 lb of TNT

Every earthquake near Central Aguirre Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Salinas Municipio 11 kmSanta Isabel Municipio 17 kmGuayama Municipio 17 kmArroyo Municipio 25 kmCoamo Municipio 28 kmCayey Municipio 28 kmJuana Díaz Municipio 29 kmAibonito Municipio 29 kmPatillas Municipio 32 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
1:39 am AST on 8 March 2018 ()
Where
10 km (6 mi) south-southwest of Central Aguirre, PR · earthquakes near Central Aguirre
Magnitude
M 2.0 (md)
Depth
40 km below the surface
Felt
no reports yet
Nearest
Salinas Municipio, 11 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3171 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth it was probably too small to be felt, even directly above it. In Central Aguirre, 10 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: Coquí, Salinas, Jobos, Las Ochenta, Coco, Jauca.

How big was it?

This earthquake released about 35 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 440,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 310,000× the energy of this one
  3. Around the size people start to feel M 3.0 28× the energy of this one
  4. This earthquake M 2.0 about 35 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 4.6 on 2016-12-05 — about 6,900 times the energy of this one.

Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:

  1. 5.1 3 km W of Aguas Buenas, Puerto Rico · 45 km NNE of this epicentre

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 17.8695, -66.2551. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Salinas Municipio, PR 11 km (7 mi) N earthquakes near Salinas Municipio
Santa Isabel Municipio, PR 17 km (10 mi) WNW earthquakes near Santa Isabel Municipio
Guayama Municipio, PR 17 km (11 mi) NE earthquakes near Guayama Municipio
Arroyo Municipio, PR 25 km (16 mi) ENE earthquakes near Arroyo Municipio
Coamo Municipio, PR 28 km (18 mi) NNW earthquakes near Coamo Municipio
Cayey Municipio, PR 28 km (18 mi) NNE earthquakes near Cayey Municipio

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

Aftershocks so far

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

  1. 1.7 5 km SSW of Lamboglia, Puerto Rico
  2. 2.3 5 km SSW of Lamboglia, Puerto Rico
  3. 2.0 1 km NNE of Buena Vista, Puerto Rico
  4. 2.3 5 km SSW of Lamboglia, Puerto Rico
  5. 2.1 5 km SSW of Lamboglia, Puerto Rico
  6. 1.6 4 km N of Los Llanos, Puerto Rico
  7. 2.2 6 km SSW of Lamboglia, Puerto Rico
  8. 2.5 5 km S of Palmas, Puerto Rico
  9. 2.0 2 km N of Yaurel, Puerto Rico
  10. 1.7 3 km S of Palmas, Puerto Rico
  11. 3.0 7 km SSW of Lamboglia, Puerto Rico
  12. 3.9 6 km SSW of Lamboglia, Puerto Rico
  13. 1.6 1 km SSW of Mariano Colón, Puerto Rico
  14. 2.4 13 km SSE of Arroyo, Puerto Rico
  15. 1.8 13 km SSE of Tallaboa, 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.