QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

0 km E of Río Lajas, Puerto Rico

· 122 km deep · released about 100 lb of TNT

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10 km30 km60 km120 km N Toa Alta Municipio 4 kmDorado Municipio 9 kmVega Alta Municipio 9 kmToa Baja Municipio 10 kmBayamón Municipio 11 kmNaranjito Municipio 12 kmCorozal Municipio 12 kmCataño Municipio 13 kmVega Baja Municipio 16 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 2.4 (md)
Depth
122 km below the surface
Felt
no reports yet
Nearest
Toa Alta Municipio, 4 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2679 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 100 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 150,000× 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 9.4× the energy of this one
  4. This earthquake M 2.4 about 100 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 18.3945, -66.2638. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Toa Alta Municipio, PR 4 km (2 mi) NNW of here earthquakes near Toa Alta Municipio
Dorado Municipio, PR 9 km (6 mi) S of here earthquakes near Dorado Municipio
Vega Alta Municipio, PR 9 km (6 mi) ESE of here earthquakes near Vega Alta Municipio
Toa Baja Municipio, PR 10 km (6 mi) SW of here earthquakes near Toa Baja Municipio
Bayamón Municipio, PR 11 km (7 mi) WNW of here earthquakes near Bayamón Municipio
Naranjito Municipio, PR 12 km (7 mi) N of here earthquakes near Naranjito Municipio

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

Aftershocks so far

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

  1. 1.9 5 km NNE of Río Cañas Abajo, Puerto Rico
  2. 2.6 10 km N of San Juan, Puerto Rico
  3. 1.8 2 km SW of Río Cañas Abajo, Puerto Rico
  4. 1.7 0 km ENE of Jobos, Puerto Rico
  5. 1.9 1 km SW of Río Cañas Abajo, Puerto Rico
  6. 1.5 3 km N of Potala Pastillo, Puerto Rico
  7. 1.5 2 km WSW of Río Cañas Abajo, Puerto Rico
  8. 2.1 1 km WSW of Río Cañas Abajo, Puerto Rico
  9. 1.5 1 km WSW of Vázquez, Puerto Rico
  10. 1.7 2 km WSW of Río Cañas Abajo, Puerto Rico
  11. 1.6 2 km SSW of Río Cañas Abajo, Puerto Rico
  12. 1.9 1 km WSW of Río Cañas Abajo, Puerto Rico
  13. 2.4 2 km SW of Río Cañas Abajo, Puerto Rico
  14. 1.5 1 km ENE of Jobos, Puerto Rico
  15. 1.6 2 km W of Río Cañas Abajo, 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 4.4 on 2018-12-09 — it released about 1,200 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.