QuakeIndex

Earthquake · reviewed by a seismologist

M 3.5md

116 km NNE of Suárez, Puerto Rico

· 30 km deep · released about 2.4 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Loíza Municipio 118 kmFajardo Municipio 119 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 3.5 (md)
Depth
30 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Loíza Municipio, 118 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2129 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 2.4 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.5 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 70,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 3,100× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,200× the energy of this one
  4. This earthquake M 3.5 about 2.4 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 5.1× more

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 19.4600, -65.6251. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Loíza Municipio, PR 118 km (73 mi) NNE of here earthquakes near Loíza Municipio
Fajardo Municipio, PR 119 km (74 mi) N of here earthquakes near Fajardo Municipio
Carolina Municipio, PR 124 km (77 mi) NNE of here earthquakes near Carolina Municipio
San Juan Municipio, PR 124 km (77 mi) NNE of here earthquakes near San Juan Municipio
Cataño Municipio, PR 126 km (78 mi) NNE of here earthquakes near Cataño Municipio
Toa Baja Municipio, PR 127 km (79 mi) NNE of here earthquakes near Toa Baja Municipio

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

Aftershocks so far

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

  1. 3.3 108 km N of Suárez, Puerto Rico
  2. 3.5 117 km NNW of Charlotte Amalie, U.S. Virgin Islands
  3. 2.9 76 km NNE of San Juan, Puerto Rico
  4. 3.4 114 km N of Culebra, Puerto Rico
  5. 3.5 135 km NNE of Vieques, Puerto Rico
  6. 3.2 80 km N of Loíza, Puerto Rico
  7. 3.5 110 km N of Suárez, Puerto Rico
  8. 3.5 86 km NNE of Luquillo, Puerto Rico
  9. 3.6 127 km N of Suárez, Puerto Rico
  10. 3.3 113 km NNE of San Juan, Puerto Rico
  11. 3.7 107 km N of Suárez, Puerto Rico
  12. 3.5 127 km N of Suárez, Puerto Rico
  13. 3.4 101 km N of Culebra, Puerto Rico
  14. 3.2 94 km N of Suárez, Puerto Rico
  15. 3.2 112 km N 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 4.5 on 2018-03-06 — it released about 35 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.