QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

7 km NW of San Sebastián, Puerto Rico

· 9.0 km deep · released about 35 lb of TNT

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10 km30 km60 km120 km N Moca Municipio 4 kmSan Sebastián Municipio 9 kmIsabela Municipio 12 kmAñasco Municipio 14 kmAguada Municipio 15 kmAguadilla Municipio 15 kmQuebradillas Municipio 15 kmLas Marías Municipio 18 kmCamuy Municipio 20 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 2.0 (md)
Depth
9.0 km below the surface
Felt
no reports yet
Nearest
Moca Municipio, 4 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2745 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 35 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 440,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 310,000× the energy of this one
  3. Around the size people start to feel M 3.0 28× the energy of this one
  4. This earthquake M 2.0 about 35 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 18.3800, -67.0428. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Moca Municipio, PR 4 km (2 mi) E of here earthquakes near Moca Municipio
San Sebastián Municipio, PR 9 km (6 mi) NW of here earthquakes near San Sebastián Municipio
Isabela Municipio, PR 12 km (7 mi) SSW of here earthquakes near Isabela Municipio
Añasco Municipio, PR 14 km (9 mi) NE of here earthquakes near Añasco Municipio
Aguada Municipio, PR 15 km (9 mi) E of here earthquakes near Aguada Municipio
Aguadilla Municipio, PR 15 km (10 mi) SE of here earthquakes near Aguadilla Municipio

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

Aftershocks so far

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

  1. 2.1 3 km NW of Quebradillas, Puerto Rico
  2. 1.6 3 km SSE of Mayagüez, Puerto Rico
  3. 1.9 1 km ENE of Hormigueros, Puerto Rico
  4. 2.7 19 km N of Isabela, Puerto Rico
  5. 1.8 3 km SW of Las Marías, Puerto Rico
  6. 1.8 15 km NW of Puerto Real, Puerto Rico
  7. 2.1 0 km SW of Lajas, Puerto Rico
  8. 1.7 2 km NNE of Yauco, Puerto Rico
  9. 1.8 2 km N of Yauco, Puerto Rico
  10. 2.1 3 km NNE of La Playa, Puerto Rico
  11. 1.6 5 km SW of La Parguera, Puerto Rico
  12. 2.3 3 km ENE of Isabela, Puerto Rico
  13. 2.3 22 km N of Arecibo, Puerto Rico
  14. 2.1 29 km NW of Rincón, Puerto Rico
  15. 1.7 3 km S 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 2017-10-14 — it released about 2,500 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.