QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6md

Earthquake near Mucarabones, PR

No earthquake was likely felt in Mucarabones in the 24 hours to 10:00 am AST (14:00 UTC). The last one was M 4.8, 92 km (57 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 Mucarabones

This page: a magnitude 2.6 earthquake was recorded 2 km (1 mi) east-southeast of Mucarabones, PR, at 7:31 am AST on 14 August 2019 (11:31 UTC), 93 km deep.

USGS: 2 km ESE of Mucarabones, Puerto Rico

in Bayamón, PR

7:31 am AST, Aug 14, 2019 · · 93 km deep · released about 280 lb of TNT

Every earthquake near Mucarabones Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Bayamón Municipio 5 kmToa Alta Municipio 5 kmToa Baja Municipio 8 kmCataño Municipio 9 kmGuaynabo Municipio 10 kmNaranjito Municipio 12 kmDorado Municipio 12 kmSan Juan Municipio 14 kmAguas Buenas Municipio 16 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
7:31 am AST on 14 August 2019 ()
Where
2 km (1 mi) east-southeast of Mucarabones, PR · earthquakes near Mucarabones
Magnitude
M 2.6 (md)
Depth
93 km below the surface
Felt
no reports yet
Nearest
Bayamón Municipio, 5 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2646 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 it was probably too small to be felt, even directly above it. In Mucarabones, 2 km away, the estimate is intensity I (not felt). 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: Pájaros, Candelaria, Candelaria Arenas, Bayamón, Sabana Seca, Toa Alta.

How big was it?

This earthquake released about 280 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 55,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 39,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.5× the energy of this one
  4. This earthquake M 2.6 about 280 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 4.4 on 2018-12-09 — about 440 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 · 44 km WNW of this epicentre
  2. 5.1 3 km W of Aguas Buenas, Puerto Rico · 15 km SSE of this epicentre
  3. 5.0 3 km N of Brenas, Puerto Rico · 20 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 18.3823, -66.1970. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Bayamón Municipio, PR 5 km (3 mi) SE earthquakes near Bayamón Municipio
Toa Alta Municipio, PR 5 km (3 mi) WSW earthquakes near Toa Alta Municipio
Toa Baja Municipio, PR 8 km (5 mi) N earthquakes near Toa Baja Municipio
Cataño Municipio, PR 9 km (5 mi) NE earthquakes near Cataño Municipio
Guaynabo Municipio, PR 10 km (6 mi) ESE earthquakes near Guaynabo Municipio
Naranjito Municipio, PR 12 km (7 mi) SSW earthquakes near Naranjito Municipio

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

Aftershocks so far

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

  1. 1.7 10 km WNW of Orocovis, Puerto Rico
  2. 1.9 4 km E of Guayabal, Puerto Rico
  3. 1.7 1 km WSW of Río Cañas Abajo, Puerto Rico
  4. 2.0 1 km SW of Las Ochenta, Puerto Rico
  5. 2.5 3 km ESE of Jauca, Puerto Rico
  6. 1.7 2 km E of Jauca, Puerto Rico
  7. 2.2 12 km NNW of Tierras Nuevas Poniente, Puerto Rico
  8. 1.8 1 km ESE of Mariano Colón, Puerto Rico
  9. 2.3 1 km E of Corozal, Puerto Rico
  10. 1.6 2 km SE of El Ojo, Puerto Rico
  11. 1.7 1 km W of Jauca, Puerto Rico
  12. 2.1 0 km N of Salinas, Puerto Rico
  13. 2.2 4 km ESE of Bayamon, Puerto Rico
  14. 2.9 12 km N of Brenas, Puerto Rico
  15. 2.0 37 km N of Brenas, 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.