The head of the Red Crescent in Benghazi, Kais Fhakeri, has confirmed that Storm Daniel has killed at least 150 people dead in Derna, after water levels in the city rose as high as three metres (10 feet).

Two dams have also collapsed in the city, the Derna municipal council has said, and videos posted online show entire residential blocks destroyed along Wadi Derna, a river that runs down from the mountains through the city centre.

“The city of Derna is completely surrounded by mountains, and these dams collapsed,” said Al Jazeera’s Malik Traina, reporting from the capital, Tripoli, in Libya’s west. “Some experts are saying more than 30 million cubic square metres of water was dumped into the city, and we’re starting to see pictures of entire neighbourhoods destroyed.”

Footage on social media showed people stranded on the roofs of their vehicles as Storm Daniel hit the cities of Benghazi, Susa, Bayda, al-Marj and Derna on Sunday and Monday.

Note: Source updated