QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

Earthquake near Daguao, PR

No earthquake was likely felt in Daguao in the 24 hours to 10:47 am AST (14:47 UTC). The last one was M 4.1, 47 km (29 mi) SE, at 5:44 am AST on 28 October 2026, estimated intensity II (weak) in town; 5 felt reports to USGS. Every earthquake near Daguao

This page: a magnitude 2.2 earthquake was recorded 10 km (6 mi) south-southeast of Daguao, PR, at 4:09 am AST on 23 September 2019 (08:09 UTC), 69 km deep.

USGS: 9 km SSE of Daguao, Puerto Rico

52 km (32 mi) ESE of San Juan, PR · 42 km (26 mi) ESE of Caguas, PR

4:09 am AST, Sep 23, 2019 · · 69 km deep · released about 58 lb of TNT

Every earthquake near Daguao Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Naguabo Municipio 12 kmCeiba Municipio 13 kmHumacao Municipio 14 kmVieques Municipio 23 kmLas Piedras Municipio 24 kmYabucoa Municipio 24 kmLuquillo Municipio 26 kmFajardo Municipio 28 kmJuncos Municipio 28 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
4:09 am AST on 23 September 2019 ()
Where
10 km (6 mi) south-southeast of Daguao, PR · earthquakes near Daguao
Magnitude
M 2.2 (md)
Depth
69 km below the surface
Felt
no reports yet
Nearest
Naguabo Municipio, 12 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2606 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 Daguao, 10 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.

Earthquakes near other towns within 30 km: Punta Santiago, Naguabo, Aguas Claras, Bajandas, Duque, Río Blanco.

How big was it?

This earthquake released about 58 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 260,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 180,000× the energy of this one
  3. Around the size people start to feel M 3.0 16× the energy of this one
  4. This earthquake M 2.2 about 58 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 4.6 on 2016-12-05 — about 4,100 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 18.1433, -65.6528. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Naguabo Municipio, PR 12 km (7 mi) NW earthquakes near Naguabo Municipio
Ceiba Municipio, PR 13 km (8 mi) NNE earthquakes near Ceiba Municipio
Humacao Municipio, PR 14 km (9 mi) W earthquakes near Humacao Municipio
Vieques Municipio, PR 23 km (15 mi) E earthquakes near Vieques Municipio
Las Piedras Municipio, PR 24 km (15 mi) WNW earthquakes near Las Piedras Municipio
Yabucoa Municipio, PR 24 km (15 mi) WSW earthquakes near Yabucoa Municipio

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

Aftershocks so far

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

  1. 2.3 2 km W of Humacao, Puerto Rico
  2. 2.7 22 km SE of Emajagua, Puerto Rico
  3. 2.7 18 km SSW of Esperanza, Puerto Rico
  4. 2.1 13 km WSW of Esperanza, Puerto Rico
  5. 3.0 29 km S of Esperanza, Puerto Rico
  6. 2.6 23 km SE of Emajagua, Puerto Rico
  7. 2.5 1 km SW of Bairoa, Puerto Rico
  8. 2.8 7 km SW of Esperanza, Puerto Rico
  9. 2.7 7 km W of Isabel Segunda, Puerto Rico
  10. 2.3 5 km SSE of El Negro, Puerto Rico
  11. 1.8 9 km S of Emajagua, Puerto Rico
  12. 1.7 4 km SSE of Arroyo, Puerto Rico
  13. 2.2 2 km NNE of Emajagua, Puerto Rico
  14. 2.8 5 km W of Trujillo Alto, Puerto Rico
  15. 2.6 29 km SSE of Esperanza, 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.