QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

Earthquake near Trujillo Alto, PR

No earthquake was likely felt in Trujillo Alto in the 24 hours to 12:45 pm AST (16:45 UTC). The last one was M 4.1, 83 km (52 mi) ESE, at 5:44 am AST on 28 October 2026, estimated intensity II (weak) in town; 5 felt reports to USGS. Every earthquake near Trujillo Alto

This page: a magnitude 2.3 earthquake was recorded in Trujillo Alto, PR, at 8:47 pm AST on 2 February 2019 (00:47 UTC), 73 km deep.

USGS: Puerto Rico region

7 km (4 mi) SE of San Juan, PR · 6 km (4 mi) SW of Carolina, PR

8:47 pm AST, Feb 2, 2019 · · 73 km deep · released about 85 lb of TNT

Every earthquake near Trujillo Alto Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Trujillo Alto Municipio 4 kmCarolina Municipio 6 kmSan Juan Municipio 9 kmGuaynabo Municipio 11 kmGurabo Municipio 11 kmLoíza Municipio 12 kmCanóvanas Municipio 14 kmBayamón Municipio 16 kmCataño Municipio 17 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
8:47 pm AST on 2 February 2019 ()
Where
in Trujillo Alto, PR · earthquakes near Trujillo Alto
Magnitude
M 2.3 (md)
Depth
73 km below the surface
Felt
no reports yet
Nearest
Trujillo Alto Municipio, 4 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2838 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth it was probably too small to be felt, even directly above it. Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Earthquakes near other towns within 30 km: Carolina, Eleanor Roosevelt, Guaynabo, Santa Barbara, Celada, Bairoa.

How big was it?

This earthquake released about 85 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 180,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 11× the energy of this one
  4. This earthquake M 2.3 about 85 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 18.3655, -66.0141. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Trujillo Alto Municipio, PR 4 km (2 mi) SSE earthquakes near Trujillo Alto Municipio
Carolina Municipio, PR 6 km (4 mi) NE earthquakes near Carolina Municipio
San Juan Municipio, PR 9 km (5 mi) NW earthquakes near San Juan Municipio
Guaynabo Municipio, PR 11 km (7 mi) WSW earthquakes near Guaynabo Municipio
Gurabo Municipio, PR 11 km (7 mi) SSE earthquakes near Gurabo Municipio
Loíza Municipio, PR 12 km (7 mi) NE earthquakes near Loíza Municipio

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

Aftershocks so far

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

  1. 1.6 3 km E of La Plena, Puerto Rico
  2. 1.6 3 km E of La Plena, Puerto Rico
  3. 2.3 0 km SW of Jobos, Puerto Rico
  4. 2.2 4 km SSW of Las Piedras, Puerto Rico
  5. 1.6 Puerto Rico region
  6. 1.6 1 km NNE of Jobos, Puerto Rico
  7. 1.6 0 km ESE of Jobos, Puerto Rico
  8. 2.0 0 km WSW of Jobos, Puerto Rico
  9. 2.2 0 km NNE of Jobos, Puerto Rico
  10. 2.5 0 km NNW of Jobos, Puerto Rico
  11. 1.7 1 km NE of Jobos, Puerto Rico
  12. 2.6 0 km W of Jobos, Puerto Rico
  13. 2.1 0 km NNW of Jobos, Puerto Rico
  14. 2.2 0 km NNE of Jobos, Puerto Rico
  15. 1.7 0 km NE of Jobos, 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.