QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

Puerto Rico region

· 39 km deep · released about 1,100 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Canóvanas Municipio 4 kmCarolina Municipio 8 kmTrujillo Alto Municipio 10 kmLoíza Municipio 11 kmGurabo Municipio 12 kmRío Grande Municipio 12 kmJuncos Municipio 14 kmSan Juan Municipio 18 kmLas Piedras Municipio 19 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
39 km below the surface
Felt
5 reports · strongest reported intensity II
Nearest
Canóvanas Municipio, 4 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1135 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 5 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,100 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 6.7 300,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 13,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 9,400× the energy of this one
  4. This earthquake M 3.0 about 1,100 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 18.3537, -65.9105. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Canóvanas Municipio, PR 4 km (2 mi) NW of here earthquakes near Canóvanas Municipio
Carolina Municipio, PR 8 km (5 mi) SE of here earthquakes near Carolina Municipio
Trujillo Alto Municipio, PR 10 km (6 mi) ENE of here earthquakes near Trujillo Alto Municipio
Loíza Municipio, PR 11 km (7 mi) SSE of here earthquakes near Loíza Municipio
Gurabo Municipio, PR 12 km (7 mi) NE of here earthquakes near Gurabo Municipio
Río Grande Municipio, PR 12 km (8 mi) WSW of here earthquakes near Río Grande 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. 2.5 2 km SSE of Caguas, Puerto Rico
  2. 2.8 1 km SSW of Cidra, Puerto Rico
  3. 2.3 Puerto Rico region
  4. 3.2 2 km NNW of San Juan, Puerto Rico
  5. 3.3 4 km ENE of Guaynabo, Puerto Rico
  6. 2.6 Puerto Rico region
  7. 3.3 Puerto Rico region
  8. 2.5 16 km SE of El Negro, Puerto Rico
  9. 2.3 6 km S of Punta Santiago, Puerto Rico
  10. 2.6 Puerto Rico region
  11. 2.6 2 km WNW of Bayamon, Puerto Rico
  12. 2.9 2 km NNE of Parcelas La Milagrosa, Puerto Rico
  13. 2.7 1 km W of Juncos, 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 2016-12-05 — it released about 210 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.