QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

3 km S of Palomas, Puerto Rico

· 12 km deep · released about 830 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Comerío Municipio 5 kmBarranquitas Municipio 6 kmAibonito Municipio 7 kmNaranjito Municipio 10 kmCidra Municipio 10 kmCorozal Municipio 14 kmCoamo Municipio 15 kmAguas Buenas Municipio 15 kmCayey Municipio 15 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
12 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Comerío Municipio, 5 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2360 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 830 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 6.7 410,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 18,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 13,000× the energy of this one
  4. This earthquake M 3.0 about 830 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 18.1976, -66.2570. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Comerío Municipio, PR 5 km (3 mi) SW of here earthquakes near Comerío Municipio
Barranquitas Municipio, PR 6 km (3 mi) E of here earthquakes near Barranquitas Municipio
Aibonito Municipio, PR 7 km (5 mi) N of here earthquakes near Aibonito Municipio
Naranjito Municipio, PR 10 km (6 mi) S of here earthquakes near Naranjito Municipio
Cidra Municipio, PR 10 km (6 mi) WNW of here earthquakes near Cidra Municipio
Corozal Municipio, PR 14 km (9 mi) SSE of here earthquakes near Corozal Municipio

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

Aftershocks so far

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

  1. 2.7 0 km E of Luis Llorens Torres, Puerto Rico
  2. 2.9 2 km W of Potala Pastillo, Puerto Rico
  3. 2.0 3 km WSW of Villalba, Puerto Rico
  4. 2.3 3 km ESE of Ponce, Puerto Rico
  5. 2.7 3 km ESE of Ponce, Puerto Rico
  6. 2.7 2 km SSW of Jauca, 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 2019-03-12 — it released about 290 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.