QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

16 km N of San Juan, Puerto Rico

· 71 km deep · released about 67 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cataño Municipio 20 kmToa Baja Municipio 21 kmSan Juan Municipio 21 kmLoíza Municipio 24 kmDorado Municipio 24 kmCarolina Municipio 27 kmGuaynabo Municipio 30 kmBayamón Municipio 31 kmTrujillo Alto Municipio 32 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 2.2 (md)
Depth
71 km below the surface
Felt
no reports yet
Nearest
Cataño Municipio, 20 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2741 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 67 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 230,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 160,000× the energy of this one
  3. Around the size people start to feel M 3.0 14× the energy of this one
  4. This earthquake M 2.2 about 67 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 18.6125, -66.0858. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cataño Municipio, PR 20 km (12 mi) NNE of here earthquakes near Cataño Municipio
Toa Baja Municipio, PR 21 km (13 mi) NNE of here earthquakes near Toa Baja Municipio
San Juan Municipio, PR 21 km (13 mi) N of here earthquakes near San Juan Municipio
Loíza Municipio, PR 24 km (15 mi) NW of here earthquakes near Loíza Municipio
Dorado Municipio, PR 24 km (15 mi) NE of here earthquakes near Dorado Municipio
Carolina Municipio, PR 27 km (17 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

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

  1. 2.1 39 km N of Dorado, Puerto Rico
  2. 2.7 44 km N of San Juan, Puerto Rico
  3. 2.3 27 km N of Brenas, Puerto Rico
  4. 1.8 12 km N of San Juan, Puerto Rico
  5. 2.4 63 km N of San Juan, Puerto Rico
  6. 2.7 2 km NNE of Levittown, Puerto Rico
  7. 2.5 2 km E of Tierras Nuevas Poniente, Puerto Rico
  8. 2.0 20 km NNE of Tierras Nuevas Poniente, Puerto Rico
  9. 1.9 25 km N of Loíza, Puerto Rico
  10. 2.7 1 km E of Guaynabo, Puerto Rico
  11. 1.5 2 km NNE of San Lorenzo, Puerto Rico
  12. 2.6 6 km ESE of Pájaros, Puerto Rico
  13. 2.9 2 km NE of Trujillo Alto, Puerto Rico
  14. 2.3 4 km N of Brenas, Puerto Rico
  15. 2.0 8 km NE of Tierras Nuevas Poniente, 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 7,200 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.