Earthquake · reviewed by a seismologist
M 4.2ml
Earthquake near Indios, PR
Yes: an earthquake was likely felt in Indios in the last 24 hours. M 2.1, 3 km (2 mi) W of Indios, at 4:14 pm AST on 11 November 2026 (20:14 UTC); the estimated shaking in Indios was intensity II (weak). Every earthquake near Indios
This page: a magnitude 4.2 earthquake was recorded in Indios, PR, at 1:03 am AST on 9 January 2020 (05:03 UTC), 11 km deep. 128 people have reported feeling it to USGS.
USGS: 1 km WNW of Indios, Puerto Rico
22 km (14 mi) W of Ponce, PR
- When
- 1:03 am AST on 9 January 2020 ()
- Where
- in Indios, PR · earthquakes near Indios
- Magnitude
- M 4.2 (ml)
- Depth
- 11 km below the surface
- Felt
- 128 reports · strongest reported intensity VI
- Nearest
- Guayanilla Municipio, 4 km E
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2414 days ago
Earthquake alerts for Indios, PR
Get a notification in this browser when USGS records an earthquake near Indios, PR. No account or email needed.
Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon.
At this magnitude and depth, people at rest would likely notice it out to about 109 km (68 mi) from the epicentre. 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: Yauco 4 km, intensity IV · Guayanilla 5 km, intensity IV · Magas Arriba 7 km, intensity IV · Tallaboa 12 km, intensity IV · Tallaboa Alta 15 km, intensity III · Adjuntas 22 km, intensity III · Ponce 22 km, intensity III · San Germán 24 km, intensity III. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 27 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.2 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 6,200× the energy of this one
- Mineral, Virginia 2011 M 5.8 280× the energy of this one
- Magna, Utah 2020 M 5.7 200× the energy of this one
- This earthquake M 4.2 about 27 tons of TNT
- Around the size people start to feel M 3.0 this one released 57× more
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 2,200 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 17.9996, -66.8316. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Guayanilla Municipio, PR | 4 km (2 mi) | E | earthquakes near Guayanilla Municipio |
| Yauco Municipio, PR | 10 km (6 mi) | NNW | earthquakes near Yauco Municipio |
| Guánica Municipio, PR | 11 km (7 mi) | WSW | earthquakes near Guánica Municipio |
| Peñuelas Municipio, PR | 11 km (7 mi) | ENE | earthquakes near Peñuelas Municipio |
| Sabana Grande Municipio, PR | 15 km (10 mi) | NW | earthquakes near Sabana Grande Municipio |
| Adjuntas Municipio, PR | 22 km (13 mi) | NNE | earthquakes near Adjuntas Municipio |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
60 earthquakes have been recorded within 50 km since this one.
- 3.0 9 km S of Indios, Puerto Rico
- 2.4 18 km SSE of Guánica, Puerto Rico
- 2.4 8 km SE of Maria Antonia, Puerto Rico
- 3.0 7 km SE of Maria Antonia, Puerto Rico
- 2.8 3 km SSW of Guánica, Puerto Rico
- 2.7 9 km S of Indios, Puerto Rico
- 2.3 2 km SSE of Yauco, Puerto Rico
- 2.7 4 km SSE of Magas Arriba, Puerto Rico
- 2.8 5 km SSE of Indios, Puerto Rico
- 2.3 7 km SSE of Guánica, Puerto Rico
- 2.6 5 km SSE of Maria Antonia, Puerto Rico
- 2.8 1 km SSW of Magas Arriba, Puerto Rico
- 2.8 2 km WSW of Fuig, Puerto Rico
- 2.8 1 km SE of Indios, Puerto Rico
- 3.5 5 km S of Indios, 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.