Overview
- A marked deterioration is underway this weekend with heavy rain and thunderstorms in the North, where Liguria could exceed 80 mm of daily rainfall on Sunday.
- Models indicate a Mediterranean vortex between Tuesday and Wednesday that would shift rain and storms toward central and southern regions.
- An Arctic maritime air mass is forecast to reach Italy around Thursday, sending temperatures well below seasonal norms, especially across the North and Center.
- Snow is expected on the Alps and the central–northern Apennines, with some forecasts pointing to lower elevations later in the period as colder air deepens.
- Because the cold is projected to enter via the Rhone Valley corridor, a Tyrrhenian low could form and locally enhance precipitation, while the far South and major islands stay milder for now.