QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

104 km NNE of Suárez, Puerto Rico

· 45 km deep · released about 310 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Loíza Municipio 107 kmFajardo Municipio 107 kmLuquillo Municipio 109 kmRío Grande Municipio 110 kmCarolina Municipio 113 kmSan Juan Municipio 114 kmCataño Municipio 116 kmCanóvanas Municipio 117 kmCulebra Municipio 117 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 2.7 (md)
Depth
45 km below the surface
Felt
no reports yet
Nearest
Loíza Municipio, 107 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2608 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 310 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 50,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 35,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.1× the energy of this one
  4. This earthquake M 2.7 about 310 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 19.3448, -65.5931. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Loíza Municipio, PR 107 km (66 mi) NNE of here earthquakes near Loíza Municipio
Fajardo Municipio, PR 107 km (66 mi) N of here earthquakes near Fajardo Municipio
Luquillo Municipio, PR 109 km (68 mi) N of here earthquakes near Luquillo Municipio
Río Grande Municipio, PR 110 km (68 mi) NNE of here earthquakes near Río Grande Municipio
Carolina Municipio, PR 113 km (70 mi) NNE of here earthquakes near Carolina Municipio
San Juan Municipio, PR 114 km (71 mi) NNE of here earthquakes near San Juan Municipio

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

Aftershocks so far

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

  1. 3.7 133 km NNE of Vieques, Puerto Rico
  2. 3.5 118 km NNE of Vieques, Puerto Rico
  3. 3.5 Puerto Rico region
  4. 3.0 78 km NNE of Vieques, Puerto Rico
  5. 2.7 106 km N of Culebra, Puerto Rico
  6. 2.9 127 km NNE of Vieques, Puerto Rico
  7. 2.7 137 km NNE of Vieques, Puerto Rico
  8. 2.4 117 km NNE of Suárez, Puerto Rico
  9. 2.4 117 km NNE of Vieques, Puerto Rico
  10. 3.3 144 km NNE of Vieques, Puerto Rico
  11. 2.6 102 km NNW of Charlotte Amalie, U.S. Virgin Islands
  12. 2.7 96 km NNE of Luquillo, Puerto Rico
  13. 3.0 Puerto Rico region
  14. 2.6 141 km NNE of Vieques, Puerto Rico
  15. 2.8 123 km NNW of Charlotte Amalie, U.S. Virgin Islands

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 4.5 on 2018-03-06 — it released about 560 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.