4.8

M4.8 Earthquake near North Atlantic Ocean — March 30, 2021

2021-03-30 13:14:11 UTC (2021-03-30) · approx. 10:14 AM UTC-3 local

MagnitudeM4.8(mb)
Time13:14 UTC≈ 10:14 AM UTC-3
Depth10.0 kmshallow crustal
Coordinates16.408°, -48.821°
Felt byNo felt reports
Status✓ Reviewed by USGS

On March 30, 2021 at 13:14 UTC, a magnitude 4.8 shallow crustal earthquake struck near North Atlantic Ocean, at a depth of 10.0 km and coordinates 16.4079°, -48.8213°.

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 16.41°, -48.82°

Earthquake Details

Magnitude
4.8 mb
Depth
10.0 km
shallow crustal
Location
16.4079°N
-48.8213°E

Technical Information

Event ID
us6000dxpc
Event Type
earthquake
Status
✓ Reviewed
Significance
354
Azimuthal Gap
99.0°
Min Station Distance
11.754°
RMS Residual
1.22 sec
Last Updated
2021-06-08 17:59:15 UTC

Common Questions

How strong was the magnitude 4.8 earthquake near North Atlantic Ocean?

The magnitude 4.8 earthquake that struck near North Atlantic Ocean on March 30, 2021 at 13:14 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 16.4079°, -48.8213°, which is near North Atlantic Ocean.

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: us6000dxpc). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, March 30, 2021). M4.8 Earthquake near North Atlantic Ocean — March 30, 2021. Retrieved June 8, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000dxpc/