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 10:14 am AST (14:14 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 11 km (7 mi) south-southeast of Daguao, PR, at 4:42 am AST on 30 March 2017 (08:42 UTC), 12 km deep.

USGS: 10 km SSE of Daguao, Puerto Rico

54 km (33 mi) ESE of San Juan, PR · 43 km (27 mi) ESE of Caguas, PR

4:42 am AST, Mar 30, 2017 · · 12 km deep · released about 60 lb of TNT

10 km30 km60 km120 km N Naguabo Municipio 13 kmCeiba Municipio 13 kmHumacao Municipio 15 kmVieques Municipio 22 kmYabucoa Municipio 25 kmLas Piedras Municipio 25 kmLuquillo Municipio 26 kmFajardo Municipio 28 kmJuncos Municipio 30 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
4:42 am AST on 30 March 2017 ()
Where
11 km (7 mi) south-southeast of Daguao, PR · earthquakes near Daguao
Magnitude
M 2.2 (Md)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Naguabo Municipio, 13 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3513 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 14 km (9 mi) from the epicentre. In Daguao, 11 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: Aguas Claras 13 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 60 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 5.8 250,000× 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 60 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 4,000 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 18.1390, -65.6405. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Naguabo Municipio, PR 13 km (8 mi) NW earthquakes near Naguabo Municipio
Ceiba Municipio, PR 13 km (8 mi) N earthquakes near Ceiba Municipio
Humacao Municipio, PR 15 km (10 mi) W earthquakes near Humacao Municipio
Vieques Municipio, PR 22 km (14 mi) E earthquakes near Vieques Municipio
Yabucoa Municipio, PR 25 km (15 mi) WSW earthquakes near Yabucoa Municipio
Las Piedras Municipio, PR 25 km (16 mi) WNW earthquakes near Las Piedras 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. 2.2 25 km ESE of El Negro, Puerto Rico
  2. 1.9 27 km SE of El Negro, Puerto Rico
  3. 2.0 27 km SE of El Negro, Puerto Rico
  4. 1.9 10 km ESE of Punta Santiago, Puerto Rico
  5. 2.1 28 km SE of El Negro, Puerto Rico
  6. 2.3 27 km ESE of El Negro, Puerto Rico
  7. 2.7 28 km SE of El Negro, Puerto Rico
  8. 1.9 10 km S of Emajagua, Puerto Rico
  9. 2.4 26 km ESE of El Negro, Puerto Rico
  10. 2.4 26 km SE of El Negro, Puerto Rico
  11. 2.0 27 km SE of El Negro, Puerto Rico
  12. 2.0 30 km SE of El Negro, Puerto Rico
  13. 1.8 4 km SE of G. L. Garcia, Puerto Rico
  14. 1.9 19 km SW of Esperanza, Puerto Rico
  15. 2.3 Puerto Rico region

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.