QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6md

22 km NNE of San Juan, Puerto Rico

· 2.0 km deep · released about 270 lb of TNT

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10 km30 km60 km120 km N Cataño Municipio 26 kmLoíza Municipio 26 kmSan Juan Municipio 27 kmToa Baja Municipio 27 kmDorado Municipio 30 kmCarolina Municipio 31 kmGuaynabo Municipio 36 kmTrujillo Alto Municipio 36 kmBayamón Municipio 37 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 2.6 (md)
Depth
2.0 km below the surface
Felt
no reports yet
Nearest
Cataño Municipio, 26 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2763 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 270 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 57,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 40,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.6× the energy of this one
  4. This earthquake M 2.6 about 270 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 18.6601, -66.0510. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cataño Municipio, PR 26 km (16 mi) NNE of here earthquakes near Cataño Municipio
Loíza Municipio, PR 26 km (16 mi) NNW of here earthquakes near Loíza Municipio
San Juan Municipio, PR 27 km (16 mi) N of here earthquakes near San Juan Municipio
Toa Baja Municipio, PR 27 km (17 mi) NNE of here earthquakes near Toa Baja Municipio
Dorado Municipio, PR 30 km (19 mi) NE of here earthquakes near Dorado Municipio
Carolina Municipio, PR 31 km (19 mi) NNW of here earthquakes near Carolina Municipio

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

Aftershocks so far

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

  1. 1.8 1 km NW of Aguas Buenas, Puerto Rico
  2. 2.0 Puerto Rico region
  3. 2.7 61 km N of San Juan, Puerto Rico
  4. 2.9 3 km N of Naranjito, Puerto Rico
  5. 2.6 55 km N of Brenas, Puerto Rico
  6. 2.2 26 km N of Dorado, Puerto Rico
  7. 2.5 31 km N of Brenas, Puerto Rico
  8. 3.0 36 km N of Suárez, Puerto Rico
  9. 2.6 37 km N of Tierras Nuevas Poniente, Puerto Rico
  10. 2.3 Puerto Rico region
  11. 1.9 24 km NNE of Tierras Nuevas Poniente, Puerto Rico
  12. 2.5 31 km NNE of San Juan, Puerto Rico
  13. 1.7 50 km N of San Juan, Puerto Rico
  14. 1.9 3 km ENE of Bairoa, Puerto Rico
  15. 2.0 52 km N of Loíza, 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 4.8 on 2017-08-18 — it released about 1,800 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.