QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9Md

Earthquake near Bayamón, PR

No earthquake was likely felt in Bayamón in the 24 hours to 10:10 am AST (14:10 UTC). The last one was M 4.8, 98 km (61 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 Bayamón

This page: a magnitude 2.9 earthquake was recorded 3 km (2 mi) northwest of Bayamón, PR, at 9:36 am AST on 1 March 2017 (13:36 UTC), 105 km deep.

USGS: Puerto Rico region

in Bayamón, PR

9:36 am AST, Mar 1, 2017 · · 105 km deep · released about 680 lb of TNT

Every earthquake near Bayamón Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cataño Municipio 4 kmToa Baja Municipio 5 kmBayamón Municipio 7 kmToa Alta Municipio 9 kmGuaynabo Municipio 10 kmSan Juan Municipio 11 kmDorado Municipio 11 kmNaranjito Municipio 16 kmVega Alta Municipio 17 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
9:36 am AST on 1 March 2017 ()
Where
3 km (2 mi) northwest of Bayamón, PR · earthquakes near Bayamón
Magnitude
M 2.9 (Md)
Depth
105 km below the surface
Felt
no reports yet
Nearest
Cataño Municipio, 4 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3458 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 Bayamón, 3 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: Sabana Seca, Candelaria, Levittown, Candelaria Arenas, Mucarabones, Ingenio.

How big was it?

This earthquake released about 680 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 22,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 16,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.4× the energy of this one
  4. This earthquake M 2.9 about 680 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.

Where

Epicentre 18.4137, -66.1745. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Cataño Municipio, PR 4 km (3 mi) NE earthquakes near Cataño Municipio
Toa Baja Municipio, PR 5 km (3 mi) NNW earthquakes near Toa Baja Municipio
Bayamón Municipio, PR 7 km (4 mi) S earthquakes near Bayamón Municipio
Toa Alta Municipio, PR 9 km (6 mi) SW earthquakes near Toa Alta Municipio
Guaynabo Municipio, PR 10 km (6 mi) SE earthquakes near Guaynabo Municipio
San Juan Municipio, PR 11 km (7 mi) E earthquakes near San Juan 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. 2.3 0 km N of Pastos, Puerto Rico
  2. 2.6 27 km NNW of Loíza, Puerto Rico
  3. 3.1 1 km SW of San Antonio, Puerto Rico
  4. 2.7 2 km WSW of Río Lajas, Puerto Rico
  5. 2.3 5 km NNW of Brenas, Puerto Rico
  6. 2.8 4 km WNW of San Juan, Puerto Rico
  7. 3.4 2 km NNE of Barahona, Puerto Rico
  8. 2.5 2 km WNW of Parcelas Nuevas, Puerto Rico
  9. 2.4 3 km SW of Río Lajas, Puerto Rico
  10. 3.0 4 km ENE of Guaynabo, Puerto Rico
  11. 1.8 0 km NNE of Ciales, Puerto Rico
  12. 2.6 6 km ENE of Tierras Nuevas Poniente, Puerto Rico
  13. 2.8 10 km NNE of Dorado, Puerto Rico
  14. 2.7 3 km SE of Pájaros, Puerto Rico
  15. 1.8 4 km SE of G. L. Garcia, 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.