Video: Tornado sweeps across Venice The tornado roared through Sant'Erasmo island in Venice's lagoon on Tuesday, ripping the roofs off at least 12 buildings, media reports said. A funnel cloud was clearly visible from the centre of the town and from its canals, Youreporter and Venice Municipality video showed. The tornado caused major damage in several islands off the Venice lagoon, including Sant'Elena and Certosa islands, where many trees were uprooted, reports said. Dozens of small sailing ships were smashed in the port of Sant'Elena. No injuries were reported, the Municipality of Venice said.