4.8

M4.8 Earthquake 31 km N of Petit Valley, Trinidad and Tobago — October 4, 2020

2020-10-04 19:12:15 UTC (2020-10-04) · approx. 3:12 PM UTC-4 local

Felt by 22 people across nearby locations.

MagnitudeM4.8(mb)
Time19:12 UTC≈ 3:12 PM UTC-4
Depth55.2 kmshallow crustal
Coordinates10.986°, -61.545°
Felt by22DYFI responses
Status✓ Reviewed by USGS

On October 4, 2020 at 19:12 UTC, a magnitude 4.8 shallow crustal earthquake struck 31 km N of Petit Valley, Trinidad and Tobago, at a depth of 55.2 km and coordinates 10.9857°, -61.5455°.

Physical scale: An earthquake of magnitude 4.8 releases seismic energy equivalent to roughly 239 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.2 km — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 10.99°, -61.55°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 22 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.

USGS DYFI community-reported intensity map for the M4.8 earthquake near 31 km N of Petit Valley, Trinidad and Tobago

Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report

Earthquake Details

Magnitude
4.8 mb
Depth
55.2 km
shallow crustal
Location
10.9857°N
-61.5455°E
Felt Reports
22
DYFI responses
Community Intensity
4.1
CDI from reports

Technical Information

Event ID
us6000c5ip
Event Type
earthquake
Status
✓ Reviewed
Significance
363
Azimuthal Gap
84.0°
Min Station Distance
1.144°
RMS Residual
1.01 sec
Last Updated
2020-12-12 22:28:39 UTC

Common Questions

How strong was the magnitude 4.8 earthquake near Petit Valley, Trinidad and Tobago?

The magnitude 4.8 earthquake that struck 31 km N of Petit Valley, Trinidad and Tobago on October 4, 2020 at 19:12 UTC had a depth of 55.2 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 10.9857°, -61.5455°, which is 31 km N of Petit Valley, Trinidad and Tobago.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.8 earthquakes can continue for several days and gradually diminish over time.

Authoritative source: USGS event page (event ID: us6000c5ip). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2020, October 4, 2020). M4.8 Earthquake 31 km N of Petit Valley, Trinidad and Tobago — October 4, 2020. Retrieved December 12, 2020 from https://www.earthquaketracker.org/earthquakes/event/us6000c5ip/