QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

Earthquake near Maricao, PR

No earthquake was likely felt in Maricao in the 24 hours to 10:14 am AST (14:14 UTC). The last one was M 3.0, 33 km (20 mi) SSE, at 3:45 am AST on 8 November 2026, estimated intensity II (weak) in town. Every earthquake near Maricao

This page: a magnitude 2.2 earthquake was recorded 5 km (3 mi) northwest of Maricao, PR, at 12:47 pm AST on 27 February 2018 (16:47 UTC), 21 km deep.

USGS: 4 km NW of Maricao, Puerto Rico

14 km (9 mi) E of Mayagüez, PR · 102 km (64 mi) WSW of San Juan, PR

12:47 pm AST, Feb 27, 2018 · · 21 km deep · released about 54 lb of TNT

Every earthquake near Maricao Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Las Marías Municipio 4 kmMaricao Municipio 9 kmSan Germán Municipio 12 kmSan Sebastián Municipio 14 kmHormigueros Municipio 14 kmAñasco Municipio 15 kmSabana Grande Municipio 16 kmLares Municipio 17 kmMoca Municipio 20 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
12:47 pm AST on 27 February 2018 ()
Where
5 km (3 mi) northwest of Maricao, PR · earthquakes near Maricao
Magnitude
M 2.2 (md)
Depth
21 km below the surface
Felt
no reports yet
Nearest
Las Marías Municipio, 4 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3179 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 Maricao, 5 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.

Earthquakes near other towns within 30 km: Espino, Mayagüez, San Sebastián, Hormigueros, San Germán, Juncal.

How big was it?

This earthquake released about 54 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 5.8 280,000× 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 54 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists 5 earthquakes of M5 or more within 50 km:

  1. 6.3 6 km WNW of Aguadilla, Puerto Rico · 33 km NW of this epicentre
  2. 6.1 15 km WNW of San Antonio, Puerto Rico · 44 km NNW of this epicentre
  3. 5.8 4 km E of Moca, Puerto Rico · 22 km NNW of this epicentre
  4. 5.2 19 km SW of Stella, Puerto Rico · 38 km W of this epicentre
  5. 5.1 21 km SW of Stella, Puerto Rico · 38 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 18.2115, -67.0105. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Las Marías Municipio, PR 4 km (2 mi) ENE earthquakes near Las Marías Municipio
Maricao Municipio, PR 9 km (6 mi) ESE earthquakes near Maricao Municipio
San Germán Municipio, PR 12 km (7 mi) SSW earthquakes near San Germán Municipio
San Sebastián Municipio, PR 14 km (9 mi) NNE earthquakes near San Sebastián Municipio
Hormigueros Municipio, PR 14 km (9 mi) SW earthquakes near Hormigueros Municipio
Añasco Municipio, PR 15 km (9 mi) WNW earthquakes near Añasco Municipio

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

Aftershocks so far

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

  1. 2.0 6 km NW of Puerto Real, Puerto Rico
  2. 2.5 3 km NNW of Lluveras, Puerto Rico
  3. 1.8 3 km WSW of Sabana Grande, Puerto Rico
  4. 2.1 24 km WNW of Puerto Real, Puerto Rico
  5. 2.0 7 km SSW of Indios, Puerto Rico
  6. 2.5 8 km S of Pole Ojea, Puerto Rico
  7. 2.0 1 km N of La Playa, Puerto Rico
  8. 1.7 6 km E of Hormigueros, Puerto Rico
  9. 1.9 5 km W of Hormigueros, Puerto Rico
  10. 2.0 9 km S of Pole Ojea, Puerto Rico
  11. 2.3 5 km WNW of Aguada, Puerto Rico
  12. 2.2 2 km SSW of Magas Arriba, Puerto Rico
  13. 1.9 4 km NNW of Lluveras, Puerto Rico
  14. 2.1 15 km WNW of Puerto Real, Puerto Rico
  15. 1.7 7 km WSW of La Parguera, 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.