Strong winds toppled trees and parked cars were nearly submerged by floodwaters that left the streets clogged with mud.
"The city is literally devastated," said Leghorn Mayor Filippo Nogarin, adding that "a crazy amount of rain" pummeled the area in just a few hours.
Trees lie on a flooded street in Leghorn, Italy, Sunday, Sept. 10, 2017. Torrential rains have pounded Italy, leaving at least 5 dead in the Tuscan port town of Leghorn. (Alessio Novi/ANSA via AP)
The Italian news agency ANSA said the bodies of a 4-year-old boy, his parents and his grandfather were found in the flooded basement of their two-family home. Before dying, the grandfather managed to save the boy's sister, state TV RaiNews24 reported.
Leghorn province's interior ministry official, Anna Maria Manzone, told Sky TG24 TV that by late Sunday afternoon two people were still missing. Sky reported the six dead included two elderly people who died in a hillside hamlet on the edge of Leghorn.
Nogarin appealed for volunteers to help. The city of 170,000 is also a popular spot for travelers catching ferries to the islands of Elba and Sardinia.
An aerial view of the city of Leghorn, Italy, following floods, Sunday, Sept. 10, 2017. Torrential rain in Italy has triggered flooding that killed at least five people in Tuscany.(Vigili del Fuoco/Italian Firefighters via AP)
The flooding also interrupted train service in parts of the Tuscan coast along the Tyrrhenian Sea.
In Rome, which until recently had suffered through 3½ months of drought, the downpour quickly produced fast-moving streams in the streets. Several subway stations had to be closed.
Rome City Hall urged residents and visitors to go outside only for urgent reasons and to avoid parks after thunderstorms lashed the city Sunday morning. Possible hailstorms and strong winds were predicted throughout the rest of Sunday and Monday.
