Heavy rain and thunderstorms have swept across much of Greece, with the Athens National Observatory and Meteo warning that some areas could also see hail.
The storms, which began in western Greece, are spreading to central Greece, southern and eastern Peloponnese, Evia, Crete, the Cyclades, Sporades, the northern and eastern Aegean islands, and the Dodecanese.
Meteo classified the rainfall as category three out of five, with six northern regions placed on red alert. Strong southerly winds are expected across the Aegean through the afternoon.
The severe weather has already caused localised flooding in Attica, halting traffic along the Varda stream from Spata to Pikermi.
The fire service received about 40 calls for water pumping, debris removal, and fallen trees.
Two people were rescued unharmed after their vehicle was swept into a stream near Pikermi and Spata.
Authorities urged residents to avoid flood-prone areas and follow all safety instructions.
