M3.9 Earthquake 171 km ENE of Flagler Beach, Florida — July 28, 2026
2026-07-28 17:12:54 UTC (1 hour ago) · approx. 12:12 PM UTC-5 local
On July 28, 2026 at 17:12 UTC, a magnitude 3.9 shallow crustal earthquake struck 171 km ENE of Flagler Beach, Florida, at a depth of 0.0 km and coordinates 30.0308°, -79.4734°.
Physical scale: An earthquake of magnitude 3.9 releases seismic energy equivalent to roughly 11 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 296 m — 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 1 citizen response 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
-79.4734°E
Technical Information
Common Questions
How strong was the magnitude 3.9 earthquake near Flagler Beach, Florida?
The magnitude 3.9 earthquake that struck 171 km ENE of Flagler Beach, Florida on July 28, 2026 at 17:12 UTC had a depth of 0.0 km. For context, this was a minor earthquake typically detected only by instruments.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.9 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.9 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us6000tgf0). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, July 28, 2026). M3.9 Earthquake 171 km ENE of Flagler Beach, Florida — July 28, 2026. Retrieved July 28, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000tgf0/