QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

Earthquake near Caguas, PR

No earthquake was likely felt in Caguas in the 24 hours to 10:42 am AST (14:42 UTC). The last one was M 4.1, 81 km (50 mi) ESE, at 5:44 am AST on 28 October 2026, estimated intensity II (weak) in town; 5 felt reports to USGS. Every earthquake near Caguas

This page: a magnitude 2.0 earthquake was recorded 6 km (4 mi) south of Caguas, PR, at 4:17 am AST on 27 August 2019 (08:17 UTC), 29 km deep.

USGS: 6 km S of Caguas, Puerto Rico

6 km (4 mi) S of Caguas, PR

4:17 am AST, Aug 27, 2019 · · 29 km deep · released about 33 lb of TNT

Every earthquake near Caguas Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Caguas Municipio 4 kmSan Lorenzo Municipio 9 kmCidra Municipio 12 kmAguas Buenas Municipio 12 kmGurabo Municipio 13 kmCayey Municipio 14 kmJuncos Municipio 16 kmTrujillo Alto Municipio 18 kmComerío Municipio 19 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
4:17 am AST on 27 August 2019 ()
Where
6 km (4 mi) south of Caguas, PR · earthquakes near Caguas
Magnitude
M 2.0 (md)
Depth
29 km below the surface
Felt
no reports yet
Nearest
Caguas Municipio, 4 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2633 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 Caguas, 6 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: Jagual, G. L. Garcia, Bairoa, Sumidero, San Lorenzo, Santa Clara.

How big was it?

This earthquake released about 33 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 5.8 450,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 320,000× the energy of this one
  3. Around the size people start to feel M 3.0 29× the energy of this one
  4. This earthquake M 2.0 about 33 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 7,200 times the energy of this one.

Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:

  1. 5.1 3 km W of Aguas Buenas, Puerto Rico · 13 km NW of this epicentre
  2. 5.0 3 km N of Brenas, Puerto Rico · 47 km NW 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 18.1795, -66.0498. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Caguas Municipio, PR 4 km (2 mi) N earthquakes near Caguas Municipio
San Lorenzo Municipio, PR 9 km (5 mi) ESE earthquakes near San Lorenzo Municipio
Cidra Municipio, PR 12 km (7 mi) W earthquakes near Cidra Municipio
Aguas Buenas Municipio, PR 12 km (7 mi) NW earthquakes near Aguas Buenas Municipio
Gurabo Municipio, PR 13 km (8 mi) NE earthquakes near Gurabo Municipio
Cayey Municipio, PR 14 km (8 mi) SW earthquakes near Cayey Municipio

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

Aftershocks so far

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

  1. 1.7 1 km W of Jauca, Puerto Rico
  2. 2.1 0 km N of Salinas, Puerto Rico
  3. 2.3 10 km S of Salinas, Puerto Rico
  4. 2.2 4 km ESE of Bayamon, Puerto Rico
  5. 1.6 14 km WSW of Esperanza, Puerto Rico
  6. 1.6 2 km NNW of Jagual, Puerto Rico
  7. 1.6 1 km NNE of Parcelas Nuevas, Puerto Rico
  8. 1.6 18 km SE of El Negro, Puerto Rico
  9. 1.6 21 km SE of El Negro, Puerto Rico
  10. 1.6 19 km ESE of El Negro, Puerto Rico
  11. 2.0 22 km ESE of El Negro, Puerto Rico
  12. 1.9 11 km N of Dorado, Puerto Rico
  13. 1.6 2 km NNW of Río Cañas Abajo, Puerto Rico
  14. 2.2 9 km SSE of Daguao, Puerto Rico
  15. 2.3 2 km W of Bayamon, 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.