QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

17 km N of Hatillo, Puerto Rico

· 75 km deep · released about 750 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hatillo Municipio 23 kmCamuy Municipio 23 kmQuebradillas Municipio 24 kmArecibo Municipio 27 kmIsabela Municipio 29 kmBarceloneta Municipio 32 kmManatí Municipio 39 kmSan Sebastián Municipio 39 kmFlorida Municipio 40 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 2.9 (md)
Depth
75 km below the surface
Felt
no reports yet
Nearest
Hatillo Municipio, 23 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2591 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 750 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 20,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 14,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.3× the energy of this one
  4. This earthquake M 2.9 about 750 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 18.6463, -66.7988. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hatillo Municipio, PR 23 km (14 mi) N of here earthquakes near Hatillo Municipio
Camuy Municipio, PR 23 km (15 mi) NNE of here earthquakes near Camuy Municipio
Quebradillas Municipio, PR 24 km (15 mi) NE of here earthquakes near Quebradillas Municipio
Arecibo Municipio, PR 27 km (17 mi) NNW of here earthquakes near Arecibo Municipio
Isabela Municipio, PR 29 km (18 mi) NE of here earthquakes near Isabela Municipio
Barceloneta Municipio, PR 32 km (20 mi) NW of here earthquakes near Barceloneta Municipio

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

Aftershocks so far

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

  1. 1.6 7 km ESE of Las Marías, Puerto Rico
  2. 2.5 35 km NNW of San Antonio, Puerto Rico
  3. 1.9 25 km NNE of Isabela, Puerto Rico
  4. 2.0 34 km N of Isabela, Puerto Rico
  5. 2.6 45 km N of Arecibo, Puerto Rico
  6. 2.2 5 km N of Camuy, Puerto Rico
  7. 2.1 19 km N of Brenas, Puerto Rico
  8. 2.3 10 km NNE of Carrizales, Puerto Rico
  9. 2.1 56 km N of Hatillo, Puerto Rico
  10. 2.4 49 km N of Hatillo, Puerto Rico
  11. 2.9 60 km N of Hatillo, Puerto Rico
  12. 2.6 56 km N of Isabela, Puerto Rico
  13. 2.1 Puerto Rico region
  14. 1.9 4 km WNW of San Sebastián, Puerto Rico
  15. 1.9 4 km SE of Piedra Gorda, 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 160 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.