QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

0 km ENE of Jobos, Puerto Rico

· 15 km deep · released about 19 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guayama Municipio 3 kmSalinas Municipio 11 kmArroyo Municipio 13 kmCayey Municipio 16 kmPatillas Municipio 19 kmAibonito Municipio 22 kmSanta Isabel Municipio 24 kmCidra Municipio 24 kmCoamo Municipio 27 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
Magnitude
M 1.9 (md)
Depth
15 km below the surface
Felt
no reports yet
Nearest
Guayama Municipio, 3 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2744 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 19 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 5.8 790,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 560,000× the energy of this one
  3. Around the size people start to feel M 3.0 50× the energy of this one
  4. This earthquake M 1.9 about 19 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 17.9573, -66.1596. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guayama Municipio, PR 3 km (2 mi) SW of here earthquakes near Guayama Municipio
Salinas Municipio, PR 11 km (7 mi) E of here earthquakes near Salinas Municipio
Arroyo Municipio, PR 13 km (8 mi) W of here earthquakes near Arroyo Municipio
Cayey Municipio, PR 16 km (10 mi) S of here earthquakes near Cayey Municipio
Patillas Municipio, PR 19 km (12 mi) WSW of here earthquakes near Patillas Municipio
Aibonito Municipio, PR 22 km (14 mi) SSE of here 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. 1.7 3 km NNE of Río Cañas Abajo, Puerto Rico
  2. 2.6 6 km ESE of Pájaros, Puerto Rico
  3. 2.9 2 km NE of Trujillo Alto, Puerto Rico
  4. 1.9 1 km NE of Jobos, Puerto Rico
  5. 1.8 4 km W of Capitanejo, Puerto Rico
  6. 2.1 1 km N of Aguilita, Puerto Rico
  7. 2.3 0 km ENE of Jobos, Puerto Rico
  8. 2.1 6 km SSE of Arroyo, Puerto Rico
  9. 2.4 19 km SE of Emajagua, Puerto Rico
  10. 1.8 8 km SE of Lamboglia, Puerto Rico
  11. 2.5 5 km SSE of El Negro, Puerto Rico
  12. 4.1 5 km SSE of El Negro, Puerto Rico
  13. 2.1 1 km NNE of El Negro, Puerto Rico
  14. 2.1 5 km S of Palo Seco, Puerto Rico
  15. 1.9 6 km SE of Lamboglia, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.6 on 2016-12-05 — it released about 12,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.