QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

1 km SW of Bairoa, Puerto Rico

· 14 km deep · released about 180 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Caguas Municipio 4 kmGurabo Municipio 8 kmAguas Buenas Municipio 8 kmTrujillo Alto Municipio 11 kmGuaynabo Municipio 13 kmSan Lorenzo Municipio 14 kmCidra Municipio 15 kmJuncos Municipio 15 kmBayamón 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
Magnitude
M 2.5 (md)
Depth
14 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Caguas Municipio, 4 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2481 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 180 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 83,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 59,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.2× the energy of this one
  4. This earthquake M 2.5 about 180 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 18.2501, -66.0490. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Caguas Municipio, PR 4 km (3 mi) N of here earthquakes near Caguas Municipio
Gurabo Municipio, PR 8 km (5 mi) WSW of here earthquakes near Gurabo Municipio
Aguas Buenas Municipio, PR 8 km (5 mi) E of here earthquakes near Aguas Buenas Municipio
Trujillo Alto Municipio, PR 11 km (7 mi) SSW of here earthquakes near Trujillo Alto Municipio
Guaynabo Municipio, PR 13 km (8 mi) SSE of here earthquakes near Guaynabo Municipio
San Lorenzo Municipio, PR 14 km (9 mi) NW of here earthquakes near San Lorenzo Municipio

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

Aftershocks so far

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

  1. 2.3 1 km NW of Jauca, Puerto Rico
  2. 1.9 1 km SSE of Santa Isabel, Puerto Rico
  3. 2.3 2 km SW of Vázquez, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.6 on 2016-12-05 — it released about 1,300 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.