QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

41 km N of Hatillo, Puerto Rico

· 29 km deep · released about 450 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Quebradillas Municipio 45 kmIsabela Municipio 45 kmCamuy Municipio 46 kmHatillo Municipio 47 kmArecibo Municipio 51 kmAguadilla Municipio 52 kmBarceloneta Municipio 54 kmMoca Municipio 59 kmManatí Municipio 60 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 2.8 (md)
Depth
29 km below the surface
Felt
no reports yet
Nearest
Quebradillas Municipio, 45 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 453 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 450 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 34,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 24,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.1× the energy of this one
  4. This earthquake M 2.8 about 450 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 18.8632, -66.8570. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Quebradillas Municipio, PR 45 km (28 mi) N of here earthquakes near Quebradillas Municipio
Isabela Municipio, PR 45 km (28 mi) NNE of here earthquakes near Isabela Municipio
Camuy Municipio, PR 46 km (29 mi) N of here earthquakes near Camuy Municipio
Hatillo Municipio, PR 47 km (29 mi) N of here earthquakes near Hatillo Municipio
Arecibo Municipio, PR 51 km (32 mi) NNW of here earthquakes near Arecibo Municipio
Aguadilla Municipio, PR 52 km (32 mi) NE of here earthquakes near Aguadilla Municipio

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

Aftershocks so far

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

  1. 3.1 77 km N of Hatillo, Puerto Rico
  2. 3.1 69 km N of Hatillo, Puerto Rico
  3. 3.0 69 km N of Hatillo, Puerto Rico
  4. 3.1 71 km N of Hatillo, Puerto Rico
  5. 3.5 64 km N of Hatillo, Puerto Rico
  6. 2.8 44 km N of Carrizales, Puerto Rico
  7. 2.5 20 km NNE of Carrizales, Puerto Rico
  8. 3.7 57 km NNE of Isabela, Puerto Rico
  9. 3.3 33 km NW of San Antonio, Puerto Rico
  10. 3.0 36 km N of Arecibo, Puerto Rico
  11. 2.4 2 km WNW of Arecibo, Puerto Rico
  12. 2.7 19 km N of Hatillo, Puerto Rico
  13. 3.0 49 km N of Isabela, Puerto Rico
  14. 3.0 31 km N of Tierras Nuevas Poniente, Puerto Rico
  15. 3.0 36 km N of San Antonio, 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 68,000 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.