4.9

M4.9 Earthquake near northern Mid-Atlantic Ridge — May 30, 2020

2020-05-30 03:51:48 UTC (2020-05-30) · approx. 12:51 AM UTC-3 local

MagnitudeM4.9(mb)
Time03:51 UTC≈ 12:51 AM UTC-3
Depth10.0 kmshallow crustal
Coordinates25.938°, -44.973°
Felt byNo felt reports
Status✓ Reviewed by USGS

On May 30, 2020 at 03:51 UTC, a magnitude 4.9 shallow crustal earthquake struck near northern Mid-Atlantic Ridge, at a depth of 10.0 km and coordinates 25.9375°, -44.9734°.

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 25.94°, -44.97°

Earthquake Details

Magnitude
4.9 mb
Depth
10.0 km
shallow crustal
Location
25.9375°N
-44.9734°E

Technical Information

Event ID
us6000a2dz
Event Type
earthquake
Status
✓ Reviewed
Significance
369
Azimuthal Gap
75.0°
Min Station Distance
21.103°
RMS Residual
0.68 sec
Last Updated
2025-12-22 18:35:09 UTC

Common Questions

How strong was the magnitude 4.9 earthquake near northern Mid-Atlantic Ridge?

The magnitude 4.9 earthquake that struck near northern Mid-Atlantic Ridge on May 30, 2020 at 03:51 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 25.9375°, -44.9734°, which is near northern Mid-Atlantic Ridge.

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: us6000a2dz). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2020, May 30, 2020). M4.9 Earthquake near northern Mid-Atlantic Ridge — May 30, 2020. Retrieved December 22, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000a2dz/