QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

Earthquake near Indios, PR

No earthquake was likely felt in Indios in the 24 hours to 10:44 am AST (14:44 UTC). The last one was M 2.0, 3 km (2 mi) SW, at 4:21 am AST on 10 November 2026, estimated intensity II (weak) in town. Every earthquake near Indios

This page: a magnitude 1.9 earthquake was recorded 13 km (8 mi) south-southeast of Indios, PR, at 6:20 am AST on 29 January 2018 (10:20 UTC), 18 km deep.

USGS: 12 km SSE of Indios, Puerto Rico

21 km (13 mi) SW of Ponce, PR

6:20 am AST, Jan 29, 2018 · · 18 km deep · released about 21 lb of TNT

Every earthquake near Indios Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guayanilla Municipio 13 kmPeñuelas Municipio 16 kmGuánica Municipio 17 kmPonce Municipio 22 kmYauco Municipio 24 kmSabana Grande Municipio 28 kmLajas Municipio 29 kmAdjuntas Municipio 33 kmJuana Díaz Municipio 33 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
6:20 am AST on 29 January 2018 ()
Where
13 km (8 mi) south-southeast of Indios, PR · earthquakes near Indios
Magnitude
M 1.9 (md)
Depth
18 km below the surface
Felt
no reports yet
Nearest
Guayanilla Municipio, 13 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3208 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 Indios, 13 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: Tallaboa, Magas Arriba, Guayanilla, Maria Antonia, Guánica, Palomas.

How big was it?

This earthquake released about 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 710,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 500,000× the energy of this one
  3. Around the size people start to feel M 3.0 45× the energy of this one
  4. This earthquake M 1.9 about 21 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 since 1900 lists no earthquake of M5 or more within 50 km.

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 17.8870, -66.7790. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Guayanilla Municipio, PR 13 km (8 mi) N earthquakes near Guayanilla Municipio
Peñuelas Municipio, PR 16 km (10 mi) NNE earthquakes near Peñuelas Municipio
Guánica Municipio, PR 17 km (10 mi) WNW earthquakes near Guánica Municipio
Ponce Municipio, PR 22 km (14 mi) NE earthquakes near Ponce Municipio
Yauco Municipio, PR 24 km (15 mi) NNW earthquakes near Yauco Municipio
Sabana Grande Municipio, PR 28 km (18 mi) NW earthquakes near Sabana Grande Municipio

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

Aftershocks so far

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

  1. 2.1 5 km WSW of La Parguera, Puerto Rico
  2. 1.8 4 km E of Las Marías, Puerto Rico
  3. 2.2 23 km S of Ponce, Puerto Rico
  4. 1.9 1 km WNW of Palmarejo, Puerto Rico
  5. 2.2 4 km NW of Maricao, Puerto Rico
  6. 1.7 3 km E of Sabana Grande, Puerto Rico
  7. 2.1 16 km SSE of Pole Ojea, Puerto Rico
  8. 2.2 25 km SSE of Maria Antonia, Puerto Rico
  9. 1.9 9 km NNE of Yauco, Puerto Rico
  10. 2.7 1 km NE of Jauca, Puerto Rico
  11. 2.0 6 km E of La Parguera, Puerto Rico
  12. 1.9 7 km WSW of Orocovis, Puerto Rico
  13. 2.5 1 km WSW of Liborio Negron Torres, Puerto Rico
  14. 2.1 16 km SSW of La Parguera, Puerto Rico
  15. 2.3 3 km SW 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.