QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

Puerto Rico region

· 10 km deep · released about 38 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lajas Municipio 4 kmGuánica Municipio 9 kmSabana Grande Municipio 12 kmSan Germán Municipio 14 kmYauco Municipio 19 kmCabo Rojo Municipio 19 kmHormigueros Municipio 21 kmGuayanilla Municipio 22 kmMaricao Municipio 22 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
Lajas Municipio, 4 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1512 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 38 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 5.8 390,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 280,000× the energy of this one
  3. Around the size people start to feel M 3.0 25× the energy of this one
  4. This earthquake M 2.1 about 38 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 17.9843, -67.0007. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lajas Municipio, PR 4 km (3 mi) E of here earthquakes near Lajas Municipio
Guánica Municipio, PR 9 km (6 mi) WNW of here earthquakes near Guánica Municipio
Sabana Grande Municipio, PR 12 km (8 mi) SSW of here earthquakes near Sabana Grande Municipio
San Germán Municipio, PR 14 km (9 mi) SSE of here earthquakes near San Germán Municipio
Yauco Municipio, PR 19 km (12 mi) SW of here earthquakes near Yauco Municipio
Cabo Rojo Municipio, PR 19 km (12 mi) E of here earthquakes near Cabo Rojo Municipio

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

Aftershocks so far

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

  1. 2.2 2 km WSW of Indios, Puerto Rico
  2. 2.1 1 km WSW of Indios, Puerto Rico
  3. 2.0 1 km SW of Indios, Puerto Rico
  4. 2.3 2 km WSW of Indios, Puerto Rico
  5. 1.7 2 km WNW of Indios, Puerto Rico
  6. 2.2 2 km WSW of Indios, Puerto Rico
  7. 2.5 2 km WSW of Indios, Puerto Rico
  8. 2.2 1 km W of Indios, Puerto Rico
  9. 2.5 2 km ESE of Yauco, Puerto Rico
  10. 2.4 12 km S of Guánica, Puerto Rico
  11. 2.0 1 km WSW of Indios, Puerto Rico
  12. 2.3 3 km WSW of Indios, Puerto Rico
  13. 2.2 2 km SW of Indios, Puerto Rico
  14. 2.2 2 km WSW of Indios, Puerto Rico
  15. 2.3 2 km W of Indios, 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 6.4 on 2020-01-07 — it released about 3,100,000 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.