QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

Earthquake near Añasco, PR

No earthquake was likely felt in Añasco in the 24 hours to 12:59 pm AST (16:59 UTC). The last one was M 3.0, 36 km (22 mi) SSE, at 5:47 pm AST on 7 November 2026, estimated intensity II (weak) in town. Every earthquake near Añasco

This page: a magnitude 2.2 earthquake was recorded 50 km (31 mi) west of Añasco, PR, at 11:11 pm AST on 30 April 2019 (03:11 UTC), 50 km deep.

USGS: 38 km W of Rincón, Puerto Rico

50 km (31 mi) W of Mayagüez, PR · 109 km (68 mi) WNW of Ponce, PR

11:11 pm AST, Apr 30, 2019 · · 50 km deep · released about 52 lb of TNT

Every earthquake near Añasco Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mayagüez Municipio 37 kmRincón Municipio 38 kmAguada Municipio 46 kmAñasco Municipio 51 kmAguadilla Municipio 54 kmHormigueros Municipio 55 kmCabo Rojo Municipio 56 kmMoca Municipio 57 kmSan Germán Municipio 64 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
11:11 pm AST on 30 April 2019 ()
Where
50 km (31 mi) west of Añasco, PR · earthquakes near Añasco
Magnitude
M 2.2 (md)
Depth
50 km below the surface
Felt
no reports yet
Nearest
Mayagüez Municipio, 37 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2751 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 Añasco, 50 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.

How big was it?

This earthquake released about 52 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 5.8 290,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 200,000× the energy of this one
  3. Around the size people start to feel M 3.0 18× the energy of this one
  4. This earthquake M 2.2 about 52 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 2017-10-01 — about 2,300 times the energy of this one.

Before 2016, the USGS record lists 6 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.4 32 km NW of Aguadilla, Puerto Rico · 44 km NNE of this epicentre
  2. 6.3 6 km WNW of Aguadilla, Puerto Rico · 45 km ENE of this epicentre
  3. 6.3 58 km E of Punta Cana, Dominican Republic · 35 km NW of this epicentre
  4. 6.1 15 km WNW of San Antonio, Puerto Rico · 49 km NE of this epicentre
  5. 5.2 19 km SW of Stella, Puerto Rico · 28 km ESE 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 18.2883, -67.6096. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Mayagüez Municipio, PR 37 km (23 mi) SW earthquakes near Mayagüez Municipio
Rincón Municipio, PR 38 km (24 mi) E earthquakes near Rincón Municipio
Aguada Municipio, PR 46 km (28 mi) ENE earthquakes near Aguada Municipio
Añasco Municipio, PR 51 km (31 mi) E earthquakes near Añasco Municipio
Aguadilla Municipio, PR 54 km (33 mi) ENE earthquakes near Aguadilla Municipio
Hormigueros Municipio, PR 55 km (34 mi) ESE earthquakes near Hormigueros Municipio

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

Aftershocks so far

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

  1. 2.6 51 km WSW of Stella, Puerto Rico
  2. 2.3 4 km N of Puerto Real, Puerto Rico
  3. 2.4 52 km W of Stella, Puerto Rico
  4. 2.7 65 km NW of Rincón, Puerto Rico
  5. 2.2 47 km WSW of Stella, Puerto Rico
  6. 2.7 59 km WSW of Stella, Puerto Rico
  7. 2.6 54 km WSW of Stella, Puerto Rico
  8. 2.5 29 km WSW of Stella, Puerto Rico
  9. 2.4 55 km WSW of Stella, Puerto Rico
  10. 2.5 44 km WSW of Stella, Puerto Rico
  11. 2.6 36 km W of Puerto Real, Puerto Rico
  12. 2.8 52 km WSW of Stella, Puerto Rico
  13. 2.1 14 km NW of Puerto Real, Puerto Rico
  14. 2.4 32 km W of Rincón, Puerto Rico
  15. 2.7 50 km W of Stella, 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.