QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

1 km SSE of Aguada, Puerto Rico

· 10 km deep · released about 49 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Aguada Municipio 1 kmRincón Municipio 8 kmAñasco Municipio 11 kmMoca Municipio 11 kmAguadilla Municipio 13 kmIsabela Municipio 22 kmSan Sebastián Municipio 23 kmLas Marías Municipio 27 kmHormigueros 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 2.1 (md)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Aguada Municipio, 1 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2486 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 49 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 5.8 310,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 220,000× the energy of this one
  3. Around the size people start to feel M 3.0 19× the energy of this one
  4. This earthquake M 2.1 about 49 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 18.3678, -67.1845. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Aguada Municipio, PR 1 km (1 mi) S of here earthquakes near Aguada Municipio
Rincón Municipio, PR 8 km (5 mi) ENE of here earthquakes near Rincón Municipio
Añasco Municipio, PR 11 km (7 mi) NNW of here earthquakes near Añasco Municipio
Moca Municipio, PR 11 km (7 mi) W of here earthquakes near Moca Municipio
Aguadilla Municipio, PR 13 km (8 mi) SSW of here earthquakes near Aguadilla Municipio
Isabela Municipio, PR 22 km (14 mi) SW of here earthquakes near Isabela Municipio

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

Aftershocks so far

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

  1. 1.6 4 km N of San Germán, Puerto Rico
  2. 2.2 2 km WNW of Palmarejo, Puerto Rico
  3. 2.8 5 km NNE of Carrizales, Puerto Rico
  4. 3.3 23 km WSW of Stella, Puerto Rico
  5. 2.4 1 km ESE of Espino, Puerto Rico
  6. 2.4 2 km N of Cabo Rojo, Puerto Rico
  7. 2.8 9 km N of Quebradillas, Puerto Rico
  8. 2.2 14 km NNW of San Antonio, Puerto Rico
  9. 1.9 2 km NNE of Las Marias, Puerto Rico
  10. 2.2 1 km SE of Piedra Gorda, Puerto Rico
  11. 2.6 10 km ESE of Maricao, Puerto Rico
  12. 2.3 5 km SSW of La Playa, Puerto Rico
  13. 2.4 29 km WSW of Puerto Real, Puerto Rico
  14. 2.0 11 km W of Puerto Real, Puerto Rico
  15. 1.8 3 km N of Las Marías, 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 4.3 on 2019-09-05 — it released about 1,700 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.