The Italian island of Sardinia and parts of Liguria were on maximum red alert on Thursday as storms swept across Italy’s western coasts.
The victim was driving near the town of Assemini with her husband and three children when high water blocked their car.
Part of a state road that runs over the Santa Lucia river collapsed on Wednesday, cutting the highway Road in two parts.
More than 100 firefighters were at work around in the Cagliari area to rescue people trapped in their homes, with some people taking shelter on the roofs.