4.9

M4.9 Earthquake 83 km ENE of Scarborough, Trinidad and TobagoOctober 16, 2021

2021-10-16 07:07:44 UTC (2021-10-16) · approx. 3:07 AM UTC-4 local

Felt by 1 person across nearby locations.

MagnitudeM4.9(mb)
Time07:07 UTC3:07 AM UTC-4
Depth44.3 kmshallow crustal
Coordinates11.592°, -60.098°
Felt by1DYFI response
Status✓ Reviewed by USGS

On October 16, 2021 at 07:07 UTC, a magnitude 4.9 shallow crustal earthquake struck 83 km ENE of Scarborough, Trinidad and Tobago, at a depth of 44.3 km and coordinates 11.5925°, -60.0979°.

Physical scale: An earthquake of magnitude 4.9 releases seismic energy equivalent to roughly 338 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.4 km — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 11.59°, -60.10°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 1 citizen response 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 M4.9 earthquake near 83 km ENE of Scarborough, Trinidad and Tobago

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

Earthquake Details

Magnitude
4.9 mb
Depth
44.3 km
shallow crustal
Location
11.5925°N
-60.0979°E
Felt Reports
1
DYFI responses
Community Intensity
2.9
CDI from reports

Technical Information

Event ID
us6000fv5y
Event Type
earthquake
Status
✓ Reviewed
Significance
370
Azimuthal Gap
61.0°
Min Station Distance
1.615°
RMS Residual
0.51 sec
Last Updated
2021-12-25 22:58:37 UTC

Common Questions

How strong was the magnitude 4.9 earthquake near Scarborough, Trinidad and Tobago?

The magnitude 4.9 earthquake that struck 83 km ENE of Scarborough, Trinidad and Tobago on October 16, 2021 at 07:07 UTC had a depth of 44.3 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 11.5925°, -60.0979°, which is 83 km ENE of Scarborough, Trinidad and Tobago.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.9 earthquakes can continue for several days and gradually diminish over time.

Authoritative source: USGS event page (event ID: us6000fv5y). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, October 16, 2021). M4.9 Earthquake 83 km ENE of Scarborough, Trinidad and TobagoOctober 16, 2021. Retrieved December 25, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000fv5y/