QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

34 km NW of San Antonio, Puerto Rico

· 5.0 km deep · released about 94 lb of TNT

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10 km30 km60 km120 km N Aguadilla Municipio 33 kmAguada Municipio 41 kmIsabela Municipio 41 kmRincón Municipio 43 kmMoca Municipio 46 kmQuebradillas Municipio 50 kmAñasco Municipio 52 kmCamuy Municipio 57 kmSan Sebastián Municipio 57 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 2.3 (md)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Aguadilla Municipio, 33 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2524 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 94 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 160,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 110,000× the energy of this one
  3. Around the size people start to feel M 3.0 10× the energy of this one
  4. This earthquake M 2.3 about 94 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 18.7246, -67.3146. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Aguadilla Municipio, PR 33 km (20 mi) NNW of here earthquakes near Aguadilla Municipio
Aguada Municipio, PR 41 km (26 mi) NNW of here earthquakes near Aguada Municipio
Isabela Municipio, PR 41 km (26 mi) NW of here earthquakes near Isabela Municipio
Rincón Municipio, PR 43 km (27 mi) N of here earthquakes near Rincón Municipio
Moca Municipio, PR 46 km (28 mi) NNW of here earthquakes near Moca Municipio
Quebradillas Municipio, PR 50 km (31 mi) NW of here earthquakes near Quebradillas Municipio

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

Aftershocks so far

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

  1. 2.4 21 km NNW of Camuy, Puerto Rico
  2. 2.9 75 km NNW of San Antonio, Puerto Rico
  3. 1.9 52 km N of San Antonio, Puerto Rico
  4. 3.0 72 km N of San Antonio, Puerto Rico
  5. 2.9 68 km N of San Antonio, Puerto Rico
  6. 2.5 11 km NNW of Isabela, Puerto Rico
  7. 2.7 69 km N of San Antonio, Puerto Rico
  8. 1.9 23 km N of San Antonio, Puerto Rico
  9. 2.4 37 km N of Isabela, Puerto Rico
  10. 2.3 43 km NW of San Antonio, Puerto Rico
  11. 1.9 38 km NW of San Antonio, Puerto Rico
  12. 2.2 63 km N of San Antonio, Puerto Rico
  13. 2.8 70 km NNW of San Antonio, Puerto Rico
  14. 3.2 63 km N of Isabela, Puerto Rico
  15. 2.1 17 km N of Camuy, 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 320,000 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.