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A light magnitude 4.3 earthquake struck 5 km WSW of Antirrio, Greece on Tuesday, September 8, 2026 at 03:25:15 AM UTC. This shallow crustal event (10.0 km depth) released energy equivalent to approximately 43 tons of TNT. Here is the verified US telemetry, live epicenter map, and ground shaking assessment.
(5 km WSW of)4.3MB
Light Seismic Class
10.0km
Crustal Layer
38.315° N, 21.706° E
GPS Coordinates
43 tons
TNT Equivalent Power
US
USGS Real-time Feed
A magnitude 4.3 event is classified as a light earthquake. Noticeable shaking of indoor objects and rattling doors/windows. Generally causes none to slight non-structural damage in older buildings.
Felt by all. Glassware broken, books knocked off shelves, minor plaster cracks.
Felt only by a few persons at rest, especially on upper floors.
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Earthquake strength is measured on a logarithmic scale. Compare this event with the full seismic scale:
Because seismic scales are logarithmic, each whole integer increase represents:
The Mediterranean region lies in the active collision zone of the African, Arabian, and Eurasian tectonic plates. In Anatolia, the westward extrusion of the Anatolian Microplate along the North Anatolian and East Anatolian strike-slip faults generates powerful, shallow-focus earthquakes.
Originating at a depth of 10.0 km (Earth's Crust (0–70 km)), this rupture occurred occurred within the brittle upper crust. shallow earthquakes produce the highest peak ground acceleration and the sharpest surface shaking.
Seismologists note that minor aftershocks remain common in the 24 to 48 hours following tremors of magnitude 4.3. According to statistical seismic models, there is roughly a 5% probability of a subsequent event of equal or greater strength occurring in the same fault zone. Residents in Greece are advised to check living spaces for unsecured items.
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