QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

Earthquake near Pájaros, PR

No earthquake was likely felt in Pájaros in the 24 hours to 11:30 am AST (15:30 UTC). The last one was M 4.8, 91 km (56 mi) WSW, at 9:19 am AST on 18 September 2026, estimated intensity III (weak) in town; 86 felt reports to USGS. Every earthquake near Pájaros

This page: a magnitude 2.5 earthquake was recorded 3 km (2 mi) east-northeast of Pájaros, PR, at 5:49 pm AST on 28 April 2019 (21:49 UTC), 7.0 km deep.

USGS: 2 km ENE of Pájaros, Puerto Rico

in Bayamón, PR

5:49 pm AST, Apr 28, 2019 · · 7.0 km deep · released about 190 lb of TNT

Every earthquake near Pájaros Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Bayamón Municipio 4 kmToa Alta Municipio 6 kmGuaynabo Municipio 9 kmCataño Municipio 9 kmToa Baja Municipio 9 kmNaranjito Municipio 12 kmDorado Municipio 13 kmSan Juan Municipio 14 kmAguas Buenas Municipio 15 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
5:49 pm AST on 28 April 2019 ()
Where
3 km (2 mi) east-northeast of Pájaros, PR · earthquakes near Pájaros
Magnitude
M 2.5 (md)
Depth
7.0 km below the surface
Felt
no reports yet
Nearest
Bayamón Municipio, 4 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2752 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 21 km (13 mi) from the epicentre. In Pájaros, 3 km away, the estimate is intensity III (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.

Likely felt in: Bayamón 4 km, intensity III · Levittown 8 km, intensity III · Guaynabo 9 km, intensity II · Cataño 10 km, intensity II · Dorado 12 km, intensity II · San Juan 13 km, intensity II · Corozal 14 km, intensity II · San Antonio 14 km, intensity II. Estimated for each town centre; each link is that town's own record.

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 80,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 57,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.1× 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 4.6 on 2019-03-12 — about 1,300 times the energy of this one.

Before 2016, the USGS record lists 3 earthquakes of M5 or more within 50 km:

  1. 5.8 12 km N of Garrochales, Puerto Rico · 45 km WNW of this epicentre
  2. 5.1 3 km W of Aguas Buenas, Puerto Rico · 14 km SSE of this epicentre
  3. 5.0 3 km N of Brenas, Puerto Rico · 21 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 18.3756, -66.1895. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Bayamón Municipio, PR 4 km (2 mi) SE earthquakes near Bayamón Municipio
Toa Alta Municipio, PR 6 km (4 mi) WSW earthquakes near Toa Alta Municipio
Guaynabo Municipio, PR 9 km (5 mi) ESE earthquakes near Guaynabo Municipio
Cataño Municipio, PR 9 km (5 mi) NNE earthquakes near Cataño Municipio
Toa Baja Municipio, PR 9 km (6 mi) N earthquakes near Toa Baja Municipio
Naranjito Municipio, PR 12 km (7 mi) SW earthquakes near Naranjito Municipio

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

Aftershocks so far

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

  1. 2.3 25 km N of Brenas, Puerto Rico
  2. 2.0 19 km NNE of Tierras Nuevas Poniente, Puerto Rico
  3. 1.9 5 km SE of La Plena, Puerto Rico
  4. 2.6 13 km NNW of Garrochales, Puerto Rico
  5. 1.7 5 km E of San Juan, Puerto Rico
  6. 2.3 6 km NW of Trujillo Alto, Puerto Rico
  7. 1.7 5 km NNW of Brenas, Puerto Rico
  8. 2.6 3 km WSW of Ciales, Puerto Rico
  9. 2.4 0 km E of Río Lajas, Puerto Rico
  10. 1.5 3 km NE of Río Cañas Abajo, Puerto Rico
  11. 1.8 6 km ESE of Jayuya, Puerto Rico
  12. 1.9 6 km NW of Villalba, Puerto Rico
  13. 2.1 39 km N of Dorado, Puerto Rico
  14. 2.3 27 km N of Brenas, Puerto Rico
  15. 1.8 12 km N of San Juan, 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.