M5.0 Earthquake near northern Mid-Atlantic Ridge — August 31, 2021
2021-08-31 22:24:23 UTC (2021-08-31) · approx. 7:24 PM UTC-3 local
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On August 31, 2021 at 22:24 UTC, a magnitude 5.0 shallow crustal earthquake struck near northern Mid-Atlantic Ridge, at a depth of 10.0 km and coordinates 29.7511°, -42.6528°.0
Physical scale: An earthquake of magnitude 5.0 releases seismic energy equivalent to roughly 477 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.7 km — a useful intuition for the size of the slip patch on the fault.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from submitted citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
-42.6528°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 5.0 earthquake near northern Mid-Atlantic Ridge?
The magnitude 5.0 earthquake that struck near northern Mid-Atlantic Ridge on August 31, 2021 at 22:24 UTC had a depth of 10.0 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at 29.7511°, -42.6528°, which is near northern Mid-Atlantic Ridge.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.0 earthquakes can continue for days to weeks and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000f6fl). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, August 31, 2021). M5.0 Earthquake near northern Mid-Atlantic Ridge — August 31, 2021. Retrieved January 17, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000f6fl/