Earthquake · reviewed by a seismologist
M 2.0md
Earthquake near Humacao, PR
No earthquake was likely felt in Humacao in the 24 hours to 5:34 pm AST (21:34 UTC). The last one was M 4.1, 56 km (35 mi) ESE, at 5:44 am AST on 28 October 2026, estimated intensity II (weak) in town; 5 felt reports to USGS. Every earthquake near Humacao
This page: a magnitude 2.0 earthquake was recorded 39 km (24 mi) south-southeast of Humacao, PR, at 3:03 am AST on 12 March 2019 (07:03 UTC), 9.0 km deep.
USGS: 30 km SE of El Negro, Puerto Rico
76 km (47 mi) SE of San Juan, PR · 60 km (37 mi) SE of Caguas, PR
- When
- 3:03 am AST on 12 March 2019 ()
- Where
- 39 km (24 mi) south-southeast of Humacao, PR · earthquakes near Humacao
- Magnitude
- M 2.0 (md)
- Depth
- 9.0 km below the surface
- Felt
- no reports yet
- Nearest
- Maunabo Municipio, 32 km WNW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2801 days ago
Earthquake alerts for Humacao, PR
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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 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 13 km (8 mi) from the epicentre. In Humacao, 39 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.
How big was it?
This earthquake released about 29 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.
- Mineral, Virginia 2011 M 5.8 520,000× the energy of this one
- Magna, Utah 2020 M 5.7 370,000× the energy of this one
- Around the size people start to feel M 3.0 33× the energy of this one
- This earthquake M 2.0 about 29 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 8,200 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 17.8515, -65.6371. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Maunabo Municipio, PR | 32 km (20 mi) | WNW | earthquakes near Maunabo Municipio |
| Yabucoa Municipio, PR | 33 km (21 mi) | NW | earthquakes near Yabucoa Municipio |
| Humacao Municipio, PR | 35 km (22 mi) | NNW | earthquakes near Humacao Municipio |
| Vieques Municipio, PR | 37 km (23 mi) | NE | earthquakes near Vieques Municipio |
| Patillas Municipio, PR | 41 km (25 mi) | WNW | earthquakes near Patillas Municipio |
| Naguabo Municipio, PR | 41 km (26 mi) | NNW | earthquakes near Naguabo Municipio |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
9 earthquakes have been recorded within 50 km since this one.
- 2.2 5 km SSW of Arroyo, Puerto Rico
- 2.4 23 km ESE of El Negro, Puerto Rico
- 2.3 21 km SSE of Arroyo, Puerto Rico
- 2.2 26 km SSW of Esperanza, Puerto Rico
- 1.8 23 km SSE of Esperanza, Puerto Rico
- 1.7 8 km SSW of Arroyo, Puerto Rico
- 1.9 10 km SSE of Arroyo, Puerto Rico
- 1.9 26 km SE of El Negro, Puerto Rico
- 2.2 4 km SSW of Las Piedras, 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.