QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

91 km NNW of San Antonio, Puerto Rico

· 41 km deep · released about 140 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Aguadilla Municipio 92 kmIsabela Municipio 96 kmQuebradillas Municipio 102 kmAguada Municipio 102 kmMoca Municipio 105 kmRincón Municipio 105 kmCamuy Municipio 107 kmHatillo Municipio 111 kmAñasco Municipio 113 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 2.5 (md)
Depth
41 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Aguadilla Municipio, 92 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2512 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 140 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 110,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 75,000× the energy of this one
  3. Around the size people start to feel M 3.0 6.7× the energy of this one
  4. This earthquake M 2.5 about 140 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 19.2791, -67.3716. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Aguadilla Municipio, PR 92 km (57 mi) NNW of here earthquakes near Aguadilla Municipio
Isabela Municipio, PR 96 km (60 mi) NNW of here earthquakes near Isabela Municipio
Quebradillas Municipio, PR 102 km (63 mi) NNW of here earthquakes near Quebradillas Municipio
Aguada Municipio, PR 102 km (64 mi) N of here earthquakes near Aguada Municipio
Moca Municipio, PR 105 km (65 mi) NNW of here earthquakes near Moca Municipio
Rincón Municipio, PR 105 km (65 mi) N of here earthquakes near Rincón Municipio

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

Aftershocks so far

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

  1. 2.9 59 km N of San Antonio, Puerto Rico
  2. 3.2 72 km NNW of San Antonio, Puerto Rico
  3. 2.9 92 km NNW of San Antonio, Puerto Rico
  4. 3.0 71 km N of Isabela, Puerto Rico
  5. 2.9 71 km N of Isabela, Puerto Rico
  6. 2.5 88 km NNW of San Antonio, Puerto Rico
  7. 3.0 88 km NNW of San Antonio, Puerto Rico
  8. 3.2 128 km N of Isabela, Puerto Rico
  9. 3.2 79 km NNW of San Antonio, Puerto Rico
  10. 3.0 75 km N of San Antonio, Puerto Rico
  11. 3.0 94 km N of San Antonio, Puerto Rico
  12. 2.9 82 km NNW of San Antonio, Puerto Rico
  13. 3.1 84 km NNW of San Antonio, Puerto Rico
  14. 3.0 78 km N of Isabela, Puerto Rico
  15. 3.0 46 km N of San Antonio, 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 6.0 on 2019-09-24 — it released about 210,000 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.