QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

Earthquake near San Germán, PR

No earthquake was likely felt in San Germán in the 24 hours to 5:43 pm AST (21:43 UTC). The last one was M 2.1, 12 km (7 mi) SW, at 11:57 pm AST on 8 November 2026, estimated intensity II (weak) in town. Every earthquake near San Germán

This page: a magnitude 2.0 earthquake was recorded 49 km (30 mi) south-southwest of San Germán, PR, at 10:57 pm AST on 29 April 2017 (02:57 UTC), 10 km deep.

USGS: 33 km S of Pole Ojea, Puerto Rico

60 km (37 mi) S of Mayagüez, PR · 146 km (91 mi) SW of San Juan, PR

10:57 pm AST, Apr 29, 2017 · · 10 km deep · released about 29 lb of TNT

Every earthquake near San Germán Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cabo Rojo Municipio 37 kmLajas Municipio 39 kmGuánica Municipio 43 kmSan Germán Municipio 52 kmHormigueros Municipio 53 kmSabana Grande Municipio 54 kmGuayanilla Municipio 57 kmYauco Municipio 59 kmMaricao 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
10:57 pm AST on 29 April 2017 ()
Where
49 km (30 mi) south-southwest of San Germán, PR · earthquakes near San Germán
Magnitude
M 2.0 (md)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Cabo Rojo Municipio, 37 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3482 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 12 km (7 mi) from the epicentre. In San Germán, 49 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 29 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 520,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 370,000× the energy of this one
  3. Around the size people start to feel M 3.0 33× the energy of this one
  4. This earthquake M 2.0 about 29 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 17.6690, -67.2050. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Cabo Rojo Municipio, PR 37 km (23 mi) N earthquakes near Cabo Rojo Municipio
Lajas Municipio, PR 39 km (24 mi) NNE earthquakes near Lajas Municipio
Guánica Municipio, PR 43 km (27 mi) NE earthquakes near Guánica Municipio
San Germán Municipio, PR 52 km (32 mi) NNE earthquakes near San Germán Municipio
Hormigueros Municipio, PR 53 km (33 mi) N earthquakes near Hormigueros Municipio
Sabana Grande Municipio, PR 54 km (33 mi) NNE earthquakes near Sabana Grande Municipio

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

Aftershocks so far

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

  1. 2.1 9 km SSW of Guánica, Puerto Rico
  2. 1.9 12 km SSW of Guánica, Puerto Rico
  3. 2.3 1 km E of Pole Ojea, Puerto Rico
  4. 2.0 7 km ESE of La Parguera, Puerto Rico
  5. 1.9 21 km S of La Parguera, Puerto Rico
  6. 1.6 2 km S of Cabo Rojo, Puerto Rico
  7. 2.1 14 km S of Pole Ojea, Puerto Rico
  8. 2.1 3 km SSE of Pole Ojea, Puerto Rico
  9. 2.6 8 km WNW of Puerto Real, Puerto Rico
  10. 2.2 9 km SW of Guánica, Puerto Rico
  11. 2.2 11 km SW of Guánica, Puerto Rico
  12. 1.5 3 km S of Palmarejo, Puerto Rico
  13. 1.9 34 km S of La Parguera, Puerto Rico
  14. 1.6 31 km SSW of Guánica, Puerto Rico
  15. 1.5 6 km SSE of Pole Ojea, 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.