QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

Earthquake near Potala Pastillo, PR

No earthquake was likely felt in Potala Pastillo in the 24 hours to 5:25 pm AST (21:25 UTC). The last one was M 2.2, 6 km (4 mi) NW, at 10:09 am AST on 7 November 2026, estimated intensity II (weak) in town. Every earthquake near Potala Pastillo

This page: a magnitude 2.3 earthquake was recorded 6 km (4 mi) south-southwest of Potala Pastillo, PR, at 6:22 pm AST on 26 October 2021 (22:22 UTC), 18 km deep.

USGS: 6 km SSW of Potala Pastillo, Puerto Rico

12 km (8 mi) ESE of Ponce, PR

6:22 pm AST, Oct 26, 2021 · · 18 km deep · released about 72 lb of TNT

Every earthquake near Potala Pastillo Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Juana Díaz Municipio 7 kmPonce Municipio 11 kmSanta Isabel Municipio 15 kmVillalba Municipio 22 kmPeñuelas Municipio 24 kmCoamo Municipio 25 kmSalinas Municipio 28 kmGuayanilla Municipio 30 kmJayuya Municipio 31 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
6:22 pm AST on 26 October 2021 ()
Where
6 km (4 mi) south-southwest of Potala Pastillo, PR · earthquakes near Potala Pastillo
Magnitude
M 2.3 (md)
Depth
18 km below the surface
Felt
no reports yet
Nearest
Juana Díaz Municipio, 7 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1842 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 6 km (4 mi) from the epicentre. In Potala Pastillo, 6 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: Capitanejo, Aguilita, Playita Cortada, Río Cañas Abajo, Coto Laurel, Juana Díaz.

How big was it?

This earthquake released about 72 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 210,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 150,000× the energy of this one
  3. Around the size people start to feel M 3.0 13× the energy of this one
  4. This earthquake M 2.3 about 72 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 6.4 on 2020-01-07 — about 1,700,000 times the energy of this one.

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 17.9411, -66.5241. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Juana Díaz Municipio, PR 7 km (5 mi) NNE earthquakes near Juana Díaz Municipio
Ponce Municipio, PR 11 km (7 mi) NW earthquakes near Ponce Municipio
Santa Isabel Municipio, PR 15 km (9 mi) E earthquakes near Santa Isabel Municipio
Villalba Municipio, PR 22 km (14 mi) NNE earthquakes near Villalba Municipio
Peñuelas Municipio, PR 24 km (15 mi) WNW earthquakes near Peñuelas Municipio
Coamo Municipio, PR 25 km (16 mi) NE earthquakes near Coamo Municipio

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

Aftershocks so far

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

  1. 3.2 11 km SSW of Guánica, Puerto Rico
  2. 3.0 13 km SSW of Guánica, Puerto Rico
  3. 2.2 1 km NNW of Tallaboa, Puerto Rico
  4. 3.0 4 km SW of Indios, Puerto Rico
  5. 3.3 6 km WSW of Guánica, Puerto Rico
  6. 2.7 5 km WSW of Guánica, Puerto Rico
  7. 2.7 4 km SSE of Tallaboa, Puerto Rico
  8. 2.4 3 km SSW of Indios, Puerto Rico
  9. 2.4 7 km WSW of Fuig, Puerto Rico
  10. 2.8 2 km NNW of Tallaboa, Puerto Rico
  11. 2.3 2 km WSW of Indios, Puerto Rico
  12. 3.1 2 km NW of Fuig, Puerto Rico
  13. 2.5 1 km NNE of Magas Arriba, Puerto Rico
  14. 2.5 12 km SW of Guánica, Puerto Rico
  15. 3.0 4 km WSW of Guánica, 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.