QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

13 km N of Levittown, Puerto Rico

· 48 km deep · released about 25 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Dorado Municipio 13 kmToa Baja Municipio 13 kmCataño Municipio 15 kmVega Alta Municipio 21 kmSan Juan Municipio 22 kmToa Alta Municipio 23 kmVega Baja Municipio 25 kmBayamón Municipio 25 kmGuaynabo Municipio 27 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 1.9 (md)
Depth
48 km below the surface
Felt
no reports yet
Nearest
Dorado Municipio, 13 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2717 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 25 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 620,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 440,000× the energy of this one
  3. Around the size people start to feel M 3.0 39× the energy of this one
  4. This earthquake M 1.9 about 25 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 18.5716, -66.2000. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Dorado Municipio, PR 13 km (8 mi) NNE of here earthquakes near Dorado Municipio
Toa Baja Municipio, PR 13 km (8 mi) N of here earthquakes near Toa Baja Municipio
Cataño Municipio, PR 15 km (9 mi) NNW of here earthquakes near Cataño Municipio
Vega Alta Municipio, PR 21 km (13 mi) NE of here earthquakes near Vega Alta Municipio
San Juan Municipio, PR 22 km (13 mi) NW of here earthquakes near San Juan Municipio
Toa Alta Municipio, PR 23 km (15 mi) NNE of here earthquakes near Toa Alta Municipio

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

Aftershocks so far

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

  1. 2.1 2 km ENE of Celada, Puerto Rico
  2. 1.9 16 km N of Tierras Nuevas Poniente, Puerto Rico
  3. 1.8 11 km NNW of San Juan, Puerto Rico
  4. 2.3 46 km N of Tierras Nuevas Poniente, Puerto Rico
  5. 2.3 25 km N of Brenas, Puerto Rico
  6. 2.0 19 km NNE of Tierras Nuevas Poniente, Puerto Rico
  7. 2.6 13 km NNW of Garrochales, Puerto Rico
  8. 1.7 5 km E of San Juan, Puerto Rico
  9. 2.4 47 km N of Brenas, Puerto Rico
  10. 1.9 49 km N of Brenas, Puerto Rico
  11. 2.3 6 km NW of Trujillo Alto, Puerto Rico
  12. 1.7 5 km NNW of Brenas, Puerto Rico
  13. 2.6 3 km WSW of Ciales, Puerto Rico
  14. 2.4 0 km E of Río Lajas, Puerto Rico
  15. 2.1 39 km N of Dorado, 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 19,000 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.