QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

1 km SSE of Corozal, Puerto Rico

· 49 km deep · released about 950 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Corozal Municipio 3 kmNaranjito Municipio 7 kmToa Alta Municipio 8 kmMorovis Municipio 12 kmVega Alta Municipio 12 kmBarranquitas Municipio 14 kmComerío Municipio 15 kmBayamón Municipio 15 kmVega Baja Municipio 17 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 3.0 (md)
Depth
49 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Corozal Municipio, 3 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1002 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 950 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 350,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 11,000× the energy of this one
  4. This earthquake M 3.0 about 950 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 18.3295, -66.3097. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Corozal Municipio, PR 3 km (2 mi) NNE of here earthquakes near Corozal Municipio
Naranjito Municipio, PR 7 km (5 mi) NW of here earthquakes near Naranjito Municipio
Toa Alta Municipio, PR 8 km (5 mi) WSW of here earthquakes near Toa Alta Municipio
Morovis Municipio, PR 12 km (7 mi) E of here earthquakes near Morovis Municipio
Vega Alta Municipio, PR 12 km (8 mi) SSE of here earthquakes near Vega Alta Municipio
Barranquitas Municipio, PR 14 km (9 mi) N of here earthquakes near Barranquitas Municipio

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

Aftershocks so far

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

  1. 2.6 5 km WSW of Orocovis, Puerto Rico
  2. 2.1 6 km SSE of Salinas, Puerto Rico
  3. 2.3 6 km SSE of Salinas, Puerto Rico
  4. 3.1 7 km NNE of Utuado, Puerto Rico
  5. 2.0 4 km SSE of Salinas, Puerto Rico
  6. 2.6 3 km SSE of Salinas, Puerto Rico
  7. 1.8 2 km E of Cayey, Puerto Rico
  8. 2.2 7 km SSE of Salinas, Puerto Rico
  9. 1.5 5 km SE of Cayey, Puerto Rico
  10. 2.8 4 km WSW of Central Aguirre, Puerto Rico
  11. 2.1 4 km NW of Orocovis, Puerto Rico
  12. 3.2 2 km SSE of Coto Norte, Puerto Rico
  13. 2.6 4 km NW of Orocovis, 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 250 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.