QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

Earthquake near Luquillo, PR

No earthquake was likely felt in Luquillo in the 24 hours to 5:30 pm AST (21:30 UTC). The last one was M 4.1, 61 km (38 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 Luquillo

This page: a magnitude 2.2 earthquake was recorded 47 km (29 mi) north-northeast of Luquillo, PR, at 1:08 am AST on 8 May 2019 (05:08 UTC), 5.0 km deep.

USGS: 46 km NNE of Vieques, Puerto Rico

64 km (40 mi) NE of San Juan, PR · 57 km (36 mi) NE of Carolina, PR

1:08 am AST, May 8, 2019 · · 5.0 km deep · released about 62 lb of TNT

Every earthquake near Luquillo Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Fajardo Municipio 43 kmLuquillo Municipio 47 kmRío Grande Municipio 49 kmLoíza Municipio 52 kmCarolina Municipio 58 kmCeiba Municipio 58 kmCanóvanas Municipio 58 kmCulebra Municipio 58 kmSan Juan Municipio 63 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
1:08 am AST on 8 May 2019 ()
Where
47 km (29 mi) north-northeast of Luquillo, PR · earthquakes near Luquillo
Magnitude
M 2.2 (md)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Fajardo Municipio, 43 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2745 days ago

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

At this magnitude and depth, people at rest would likely notice it out to about 18 km (11 mi) from the epicentre. In Luquillo, 47 km away, the estimate is intensity II (weak). 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.

How big was it?

This earthquake released about 62 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 240,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 170,000× the energy of this one
  3. Around the size people start to feel M 3.0 15× the energy of this one
  4. This earthquake M 2.2 about 62 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 4.3 on 2016-09-04 — about 1,400 times the energy of this one.

Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:

  1. 5.0 73 km NNE of Vieques, Puerto Rico · 27 km NNE 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 18.7755, -65.5961. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Fajardo Municipio, PR 43 km (27 mi) S earthquakes near Fajardo Municipio
Luquillo Municipio, PR 47 km (29 mi) SSW earthquakes near Luquillo Municipio
Río Grande Municipio, PR 49 km (31 mi) SSW earthquakes near Río Grande Municipio
Loíza Municipio, PR 52 km (32 mi) SW earthquakes near Loíza Municipio
Carolina Municipio, PR 58 km (36 mi) SW earthquakes near Carolina Municipio
Ceiba Municipio, PR 58 km (36 mi) S earthquakes near Ceiba Municipio

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

Aftershocks so far

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

  1. 2.7 49 km N of Culebra, Puerto Rico
  2. 2.2 34 km NNE of Luquillo, Puerto Rico
  3. 2.0 25 km NNE of Luquillo, Puerto Rico
  4. 2.1 82 km NNE of Suárez, Puerto Rico
  5. 1.9 80 km NNE of Vieques, Puerto Rico
  6. 1.9 37 km N of San Juan, Puerto Rico
  7. 2.8 43 km N of Suárez, Puerto Rico
  8. 3.0 78 km NNE of Vieques, Puerto Rico
  9. 2.5 36 km NNE of Suárez, Puerto Rico
  10. 1.9 20 km NNE of Luquillo, Puerto Rico
  11. 2.4 45 km NNW of Charlotte Amalie, U.S. Virgin Islands
  12. 3.0 59 km N of Culebra, Puerto Rico
  13. 2.2 44 km NE of Luquillo, Puerto Rico
  14. 2.3 48 km NNW of Charlotte Amalie, U.S. Virgin Islands
  15. 2.1 37 km NNW of Culebra, 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.