QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

Earthquake near San Juan, PR

No earthquake was likely felt in San Juan in the 24 hours to 11:28 am AST (15:28 UTC). The last one was M 4.1, 99 km (62 mi) SE, at 5:44 am AST on 28 October 2026, estimated intensity II (weak) in town; 5 felt reports to USGS. Every earthquake near San Juan

This page: a magnitude 1.7 earthquake was recorded 6 km (3 mi) east of San Juan, PR, at 5:18 am AST on 7 June 2019 (09:18 UTC), 95 km deep.

USGS: 5 km E of San Juan, Puerto Rico

8 km (5 mi) N of San Juan, PR

5:18 am AST, Jun 7, 2019 · · 95 km deep · released about 9.6 lb of TNT

Every earthquake near San Juan Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Juan Municipio 6 kmCataño Municipio 11 kmLoíza Municipio 12 kmCarolina Municipio 12 kmToa Baja Municipio 15 kmGuaynabo Municipio 16 kmTrujillo Alto Municipio 16 kmBayamón Municipio 18 kmDorado Municipio 22 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
5:18 am AST on 7 June 2019 ()
Where
6 km (3 mi) east of San Juan, PR · earthquakes near San Juan
Magnitude
M 1.7 (md)
Depth
95 km below the surface
Felt
no reports yet
Nearest
San Juan Municipio, 6 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2714 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. In San Juan, 6 km away, the estimate is intensity I (not felt). 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: Eleanor Roosevelt, Cataño, Bayamón, Levittown, Trujillo Alto, Guaynabo.

How big was it?

This earthquake released about 9.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 99× the energy of this one
  4. This earthquake M 1.7 about 9.6 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.

For this area

The largest earthquake within 50 km since 2016 was M 4.4 on 2018-12-09 — about 12,000 times the energy of this one.

Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:

  1. 5.1 3 km W of Aguas Buenas, Puerto Rico · 25 km SSW of this epicentre
  2. 5.0 3 km N of Brenas, Puerto Rico · 30 km W of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 18.4748, -66.0535. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
San Juan Municipio, PR 6 km (4 mi) SSW earthquakes near San Juan Municipio
Cataño Municipio, PR 11 km (7 mi) WSW earthquakes near Cataño Municipio
Loíza Municipio, PR 12 km (8 mi) ESE earthquakes near Loíza Municipio
Carolina Municipio, PR 12 km (8 mi) SE earthquakes near Carolina Municipio
Toa Baja Municipio, PR 15 km (9 mi) W earthquakes near Toa Baja Municipio
Guaynabo Municipio, PR 16 km (10 mi) SSW earthquakes near Guaynabo Municipio

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

Aftershocks so far

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

  1. 2.2 43 km N of Suárez, Puerto Rico
  2. 2.4 1 km WNW of Pájaros, Puerto Rico
  3. 2.0 4 km NNE of Levittown, Puerto Rico
  4. 1.8 25 km NNE of Luquillo, Puerto Rico
  5. 2.5 23 km NNE of Luquillo, Puerto Rico
  6. 2.8 Puerto Rico region
  7. 2.6 2 km ESE of Mucarabones, Puerto Rico
  8. 2.5 28 km NNE of San Juan, Puerto Rico
  9. 2.7 0 km S of Cataño, Puerto Rico
  10. 2.0 3 km WNW of Corozal, Puerto Rico
  11. 1.7 2 km SSW of H. Rivera Colon, Puerto Rico
  12. 2.1 2 km NW of Galateo, Puerto Rico
  13. 1.6 26 km N of Suárez, Puerto Rico
  14. 1.9 5 km WNW of Aguas Buenas, Puerto Rico
  15. 1.7 3 km N 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.

On USGS

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