General Situation:
The Atlantic front currently over Italy shall divide in two parts on Wednesday: one part is expected to stay in our region, especially in the night and morning, while the second shall form a depression over Sardinia. Drier currents on Thursday and Friday.
Forecast:
In the night and morning the sky is overcast with intense rainfalls over the mountains, abundant and locally thunderous on the plain and maybe on the western coast as well, less intense east. Low chance of rainfalls in Trieste. Improvement from the afternoon on with moderate Bora on the plain, sustained on the coast.
Source: Osmer