QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

Earthquake near Bayamón, PR

No earthquake was likely felt in Bayamón in the 24 hours to 8:55 pm AST (00:55 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 2.7 earthquake was recorded 7 km (4 mi) south-southwest of Bayamón, PR, at 3:00 pm AST on 8 May 2023 (19:00 UTC), 69 km deep.

USGS: Puerto Rico region

in Bayamón, PR

3:00 pm AST, May 8, 2023 · · 69 km deep · released about 350 lb of TNT

Every earthquake near Bayamón Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Bayamón Municipio 3 kmToa Alta Municipio 6 kmGuaynabo Municipio 8 kmNaranjito Municipio 9 kmCataño Municipio 12 kmAguas Buenas Municipio 12 kmToa Baja Municipio 12 kmComerío Municipio 14 kmCorozal 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
3:00 pm AST on 8 May 2023 ()
Where
7 km (4 mi) south-southwest of Bayamón, PR · earthquakes near Bayamón
Magnitude
M 2.7 (md)
Depth
69 km below the surface
Felt
no reports yet
Nearest
Bayamón Municipio, 3 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1283 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, 7 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: Pájaros, Mucarabones, Candelaria, Galateo, Naranjito, Toa Alta.

How big was it?

This earthquake released about 350 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 43,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 31,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.7× the energy of this one
  4. This earthquake M 2.7 about 350 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 in our catalogue was M 4.6 on 2019-03-12 — about 680 times the energy of this one.

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 18.3457, -66.1925. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Bayamón Municipio, PR 3 km (2 mi) E earthquakes near Bayamón Municipio
Toa Alta Municipio, PR 6 km (4 mi) WNW earthquakes near Toa Alta Municipio
Guaynabo Municipio, PR 8 km (5 mi) E earthquakes near Guaynabo Municipio
Naranjito Municipio, PR 9 km (6 mi) SW earthquakes near Naranjito Municipio
Cataño Municipio, PR 12 km (7 mi) NNE earthquakes near Cataño Municipio
Aguas Buenas Municipio, PR 12 km (7 mi) SE earthquakes near Aguas Buenas 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. 3.3 Puerto Rico region
  2. 2.9 8 km NNW of Coamo, Puerto Rico
  3. 3.0 1 km E of Jagual, Puerto Rico
  4. 2.4 8 km S of Orocovis, Puerto Rico
  5. 2.9 Puerto Rico region
  6. 3.3 8 km S of Orocovis, Puerto Rico
  7. 3.0 22 km N of San Juan, Puerto Rico
  8. 2.7 2 km E of Santa Clara, Puerto Rico
  9. 3.0 1 km ENE of Bayamon, Puerto Rico
  10. 3.3 7 km NNW of Brenas, Puerto Rico
  11. 3.2 1 km NE of Bajandas, Puerto Rico
  12. 3.1 4 km WNW of Santa Clara, Puerto Rico
  13. 2.0 1 km NE of La Plena, Puerto Rico
  14. 3.0 3 km NE of La Plena, Puerto Rico
  15. 3.1 2 km SW of Santa Clara, 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.