M4.8 Earthquake 7 km W of Skiáthos, Greece — April 28, 2026
2026-04-28 13:07:45 UTC (2026-04-28) · approx. 3:07 PM UTC+2 local
Felt by 3 people across nearby locations. Aftershock of the M5.2 mainshock.
On April 28, 2026 at 13:07 UTC, a magnitude 4.8 shallow crustal earthquake struck 7 km W of Skiáthos, Greece, at a depth of 6.6 km and coordinates 39.1647°, 23.3997°. This earthquake was detected by 139 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 356, placing it among routine seismic activity.
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.
This earthquake is part of an ongoing aftershock sequence following the magnitude 5.2 mainshock that occurred 27 days ago 5 km W of Prokópi, Greece. Since the mainshock, the USGS has recorded 7 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.
The epicenter is located in Greece, a region characterized by the Hellenic subduction zone, where the African Plate subducts northward beneath the Aegean at roughly 35 mm per year. The nearest mapped fault system is the Hellenic Trench. View all earthquakes in Greece.
Learn more: Magnitude scale · Aftershock sequences
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 3 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
23.3997°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.8 earthquake near Skiáthos, Greece?
The magnitude 4.8 earthquake that struck 7 km W of Skiáthos, Greece on April 28, 2026 at 13:07 UTC had a depth of 6.6 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 39.1647°, 23.3997°, which is 7 km W of Skiáthos, Greece. View all earthquakes in Greece.
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.
Is this the same earthquake as the M5.2 one earlier?
No. This magnitude 4.8 earthquake is an aftershock of the larger magnitude 5.2 mainshock that occurred earlier 5 km W of Prokópi, Greece. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
Has Greece had earthquakes this big before?
The largest recorded earthquake in Greece was the M8.5 Crete earthquake of June 29, 1303. Today's magnitude 4.8 event is significantly smaller than that historical record.
What should I do after an earthquake?
If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.
Authoritative source: USGS event page (event ID: us7000sgnb). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, April 28, 2026). M4.8 Earthquake 7 km W of Skiáthos, Greece — April 28, 2026. Retrieved June 23, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000sgnb/