Overview

• A detached jet stream pocket known as a 'goccia fredda' has unsettled the atmosphere and triggered widespread thunderstorms, intense rain and hail.
• Temperatures have plunged by 6°C to 10°C in many areas, with Florence failing to exceed 28°C on June 17.
• Yellow alerts cover Emilia-Romagna, Marche, Lazio, Umbria, Abruzzo and parts of Campania as local authorities warn of flash floods and hail through June 19.
• While northern regions may see gradual improvement by Thursday, heavy storms are forecast to shift toward Calabria and Sicily.
• Forecasters expect the African anticyclone to rebuild by June 20, bringing warmer temperatures and more stable skies.