QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

2 km SE of Lajas, Puerto Rico

· 6.2 km deep · released about 480 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lajas Municipio 6 kmSan Germán Municipio 9 kmSabana Grande Municipio 12 kmHormigueros Municipio 14 kmCabo Rojo Municipio 15 kmGuánica Municipio 16 kmMaricao Municipio 20 kmYauco Municipio 21 kmLas Marías Municipio 23 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 2.8 (ml)
Depth
6.2 km below the surface
Felt
1 report · strongest reported intensity IV
Nearest
Lajas Municipio, 6 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1511 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 480 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 32,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 22,000× the energy of this one
  3. Around the size people start to feel M 3.0 2× the energy of this one
  4. This earthquake M 2.8 about 480 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 18.0301, -67.0445. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lajas Municipio, PR 6 km (4 mi) N of here earthquakes near Lajas Municipio
San Germán Municipio, PR 9 km (5 mi) S of here earthquakes near San Germán Municipio
Sabana Grande Municipio, PR 12 km (7 mi) WSW of here earthquakes near Sabana Grande Municipio
Hormigueros Municipio, PR 14 km (9 mi) SSE of here earthquakes near Hormigueros Municipio
Cabo Rojo Municipio, PR 15 km (9 mi) ENE of here earthquakes near Cabo Rojo Municipio
Guánica Municipio, PR 16 km (10 mi) NW of here earthquakes near Guánica 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. 2.5 3 km S of Indios, Puerto Rico
  2. 2.9 2 km SSE of Yauco, Puerto Rico
  3. 3.5 3 km SSW of Indios, Puerto Rico
  4. 2.5 0 km S of Guánica, Puerto Rico
  5. 2.5 4 km SE of Indios, Puerto Rico
  6. 2.9 2 km ESE of Magas Arriba, Puerto Rico
  7. 2.6 3 km SE of Maria Antonia, Puerto Rico
  8. 1.6 14 km SSE of Guánica, Puerto Rico
  9. 2.5 16 km SSE of Maria Antonia, Puerto Rico
  10. 3.6 7 km S of Indios, Puerto Rico
  11. 1.9 12 km SSE of Guánica, Puerto Rico
  12. 2.5 10 km SSE of Guánica, Puerto Rico
  13. 2.5 10 km S of Ponce, Puerto Rico
  14. 2.5 6 km SSW of Indios, Puerto Rico
  15. 2.7 12 km SSE of Maria Antonia, 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 250,000 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.