QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

Earthquake near Santa Isabel, PR

No earthquake was likely felt in Santa Isabel in the 24 hours to 10:11 am AST (14:11 UTC). The last one was M 2.2, 9 km (6 mi) NE, at 5:05 pm AST on 8 November 2026, estimated intensity II (weak) in town. Every earthquake near Santa Isabel

This page: a magnitude 2.0 earthquake was recorded 4 km (2 mi) east-northeast of Santa Isabel, PR, at 5:49 pm AST on 23 November 2018 (21:49 UTC), 12 km deep.

USGS: Puerto Rico region

58 km (36 mi) SW of San Juan, PR · 27 km (17 mi) E of Ponce, PR

5:49 pm AST, Nov 23, 2018 · · 12 km deep · released about 33 lb of TNT

Every earthquake near Santa Isabel Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Santa Isabel Municipio 3 kmSalinas Municipio 12 kmJuana Díaz Municipio 13 kmCoamo Municipio 15 kmVillalba Municipio 20 kmAibonito Municipio 21 kmGuayama Municipio 25 kmPonce Municipio 25 kmBarranquitas Municipio 26 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
5:49 pm AST on 23 November 2018 ()
Where
4 km (2 mi) east-northeast of Santa Isabel, PR · earthquakes near Santa Isabel
Magnitude
M 2.0 (md)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Santa Isabel Municipio, 3 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2911 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 11 km (7 mi) from the epicentre. In Santa Isabel, 4 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.

Likely felt in: Santa Isabel 4 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 33 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 5.8 450,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 320,000× the energy of this one
  3. Around the size people start to feel M 3.0 29× the energy of this one
  4. This earthquake M 2.0 about 33 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.

Where

Epicentre 17.9736, -66.3726. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Santa Isabel Municipio, PR 3 km (2 mi) SW earthquakes near Santa Isabel Municipio
Salinas Municipio, PR 12 km (7 mi) E earthquakes near Salinas Municipio
Juana Díaz Municipio, PR 13 km (8 mi) WNW earthquakes near Juana Díaz Municipio
Coamo Municipio, PR 15 km (9 mi) N earthquakes near Coamo Municipio
Villalba Municipio, PR 20 km (13 mi) NNW earthquakes near Villalba Municipio
Aibonito Municipio, PR 21 km (13 mi) NNE earthquakes near Aibonito 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. 2.2 8 km S of Tallaboa, Puerto Rico
  2. 2.1 8 km S of Tallaboa, Puerto Rico
  3. 2.0 8 km S of Tallaboa, Puerto Rico
  4. 2.1 8 km S of Tallaboa, Puerto Rico
  5. 1.5 4 km SW of Tallaboa, Puerto Rico
  6. 1.9 9 km S of Tallaboa, Puerto Rico
  7. 1.5 8 km S of Tallaboa, Puerto Rico
  8. 2.2 9 km S of Tallaboa, Puerto Rico
  9. 1.7 6 km S of Tallaboa, Puerto Rico
  10. 2.4 8 km S of Tallaboa, Puerto Rico
  11. 2.4 11 km S of Tallaboa, Puerto Rico
  12. 1.9 2 km WSW of Tallaboa, Puerto Rico
  13. 2.0 9 km S of Tallaboa, Puerto Rico
  14. 2.2 8 km S of Tallaboa, Puerto Rico
  15. 1.8 7 km S of Tallaboa, 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

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