QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

0 km WSW of Galateo, Puerto Rico

· 67 km deep · released about 320 lb of TNT

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10 km30 km60 km120 km N Toa Alta Municipio 2 kmNaranjito Municipio 8 kmCorozal Municipio 9 kmBayamón Municipio 10 kmVega Alta Municipio 11 kmDorado Municipio 13 kmToa Baja Municipio 13 kmComerío Municipio 16 kmCataño Municipio 16 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
67 km below the surface
Felt
no reports yet
Nearest
Toa Alta Municipio, 2 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2158 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 320 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 48,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 34,000× the energy of this one
  3. Around the size people start to feel M 3.0 3× the energy of this one
  4. This earthquake M 2.7 about 320 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 18.3586, -66.2673. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Toa Alta Municipio, PR 2 km (2 mi) WSW of here earthquakes near Toa Alta Municipio
Naranjito Municipio, PR 8 km (5 mi) N of here earthquakes near Naranjito Municipio
Corozal Municipio, PR 9 km (5 mi) NE of here earthquakes near Corozal Municipio
Bayamón Municipio, PR 10 km (7 mi) W of here earthquakes near Bayamón Municipio
Vega Alta Municipio, PR 11 km (7 mi) SE of here earthquakes near Vega Alta Municipio
Dorado Municipio, PR 13 km (8 mi) S of here earthquakes near Dorado Municipio

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

Aftershocks so far

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

  1. 2.3 1 km SSE of Cidra, Puerto Rico
  2. 2.0 Puerto Rico region
  3. 2.4 3 km NNW of Barranquitas, Puerto Rico
  4. 1.8 3 km N of Río Cañas Abajo, Puerto Rico
  5. 2.8 1 km ESE of Orocovis, 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 760 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.