QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

1 km WNW of Vega Baja, Puerto Rico

· 24 km deep · released about 47 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Vega Baja Municipio 1 kmVega Alta Municipio 7 kmManatí Municipio 10 kmDorado Municipio 15 kmMorovis Municipio 15 kmBarceloneta Municipio 16 kmCorozal Municipio 19 kmFlorida Municipio 19 kmToa Alta Municipio 19 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 2.1 (md)
Depth
24 km below the surface
Felt
no reports yet
Nearest
Vega Baja Municipio, 1 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2034 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 47 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 320,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 230,000× the energy of this one
  3. Around the size people start to feel M 3.0 20× the energy of this one
  4. This earthquake M 2.1 about 47 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 18.4538, -66.4030. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Vega Baja Municipio, PR 1 km (0 mi) WSW of here earthquakes near Vega Baja Municipio
Vega Alta Municipio, PR 7 km (5 mi) WNW of here earthquakes near Vega Alta Municipio
Manatí Municipio, PR 10 km (6 mi) E of here earthquakes near Manatí Municipio
Dorado Municipio, PR 15 km (9 mi) W of here earthquakes near Dorado Municipio
Morovis Municipio, PR 15 km (9 mi) N of here earthquakes near Morovis Municipio
Barceloneta Municipio, PR 16 km (10 mi) E of here earthquakes near Barceloneta Municipio

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

Aftershocks so far

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

  1. 2.0 2 km E of Vázquez, Puerto Rico
  2. 2.6 33 km N of San Juan, Puerto Rico
  3. 1.5 4 km N of Coto Laurel, Puerto Rico
  4. 1.6 6 km SSE of Adjuntas, Puerto Rico
  5. 3.3 13 km NNE of Carrizales, Puerto Rico
  6. 2.0 5 km NNE of Carrizales, 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 4.4 on 2018-12-09 — it released about 2,500 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.