QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

2 km S of Guaynabo, Puerto Rico

· 9.0 km deep · released about 130 lb of TNT

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10 km30 km60 km120 km N Guaynabo Municipio 1 kmBayamón Municipio 6 kmAguas Buenas Municipio 9 kmSan Juan Municipio 11 kmTrujillo Alto Municipio 12 kmCataño Municipio 12 kmToa Alta Municipio 14 kmCaguas Municipio 16 kmNaranjito 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
9.0 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Guaynabo Municipio, 1 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1510 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 130 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 5.8 120,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 83,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.4× the energy of this one
  4. This earthquake M 2.4 about 130 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 18.3373, -66.1138. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guaynabo Municipio, PR 1 km (0 mi) S of here earthquakes near Guaynabo Municipio
Bayamón Municipio, PR 6 km (4 mi) ESE of here earthquakes near Bayamón Municipio
Aguas Buenas Municipio, PR 9 km (6 mi) N of here earthquakes near Aguas Buenas Municipio
San Juan Municipio, PR 11 km (7 mi) SSW of here earthquakes near San Juan Municipio
Trujillo Alto Municipio, PR 12 km (7 mi) W of here earthquakes near Trujillo Alto Municipio
Cataño Municipio, PR 12 km (8 mi) SSE of here earthquakes near Cataño Municipio

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

Aftershocks so far

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

  1. 2.0 4 km SSE of G. L. Garcia, Puerto Rico
  2. 2.2 1 km SW of H. Rivera Colon, Puerto Rico
  3. 2.3 3 km SE of Jobos, Puerto Rico
  4. 2.9 23 km N of Loíza, Puerto Rico
  5. 2.5 5 km NW of Los Llanos, Puerto Rico
  6. 3.4 0 km NE of Mucarabones, Puerto Rico
  7. 2.3 8 km S of Ciales, Puerto Rico
  8. 2.5 1 km NW of Jauca, Puerto Rico
  9. 3.0 34 km N of San Juan, Puerto Rico
  10. 2.7 4 km WNW of Palomas, Puerto Rico
  11. 3.1 10 km NNW of Sabana, Puerto Rico
  12. 2.0 5 km E of Orocovis, Puerto Rico
  13. 3.2 4 km SE of Cataño, Puerto Rico
  14. 3.1 19 km NNE of San Juan, Puerto Rico
  15. 2.9 16 km NNE of Suárez, 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 4.6 on 2019-03-12 — it released about 1,900 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.