A powerful weather system will batter Greece on Wednesday, bringing in a hazardous mix of heavy snow to northern lowlands and violent thunderstorms to Athens and the south, meteorologists warned.
The storm, driven by a collision of warm Mediterranean moisture and entrenched cold air, is expected to peak midweek.
Meteorologist Giannis Kallianos described the setup as a “dangerous weather cocktail” for the capital, warning that the Athens metropolitan area faces a high risk of flash flooding.
“The system carries enormous amounts of moisture,” Mr. Kallianos told Mega TV. He forecast severe gale-force winds reaching 10 on the Beaufort scale in southern coastal areas.
While the south battles rain, central and northern Greece will freeze.
Mr. Kallianos predicted snow at unusually low elevations, dusting areas just 100 meters above sea level in Macedonia and 200 meters in Thessaly.
Theodoros Kolydas, former head of the National Meteorological Service, confirmed that winter conditions will persist through Wednesday before easing.
“The winter of 2026 continues,” Mr. Kolydas said, noting the pattern suggests a prolonged season of dynamic weather changes rather than extreme cold.
Authorities have urged residents to limit travel in affected regions as conditions deteriorate.