Marie el-Drese, the aid group’s secretary-general, told The Associated Press that a further 10,100 people are reported missing in the Mediterranean city. Health authorities previously put the death toll in Derna at 5,500. The storm also killed about 170 people elsewhere in the country.
The flooding swept away entire families in Derna on Sunday night and exposed vulnerabilities in the oil-rich country that has been mired in conflict since a 2011 uprising that toppled long-ruling dictator Moammar Gadhafi.
Daniel, an unusually strong Mediterranean storm, caused deadly flooding in communities across eastern Libya, but the worst-hit was Derna. As the storm pounded the coast Sunday night, residents said they heard loud explosions when two dams outside the city collapsed. Floodwaters gushed down Wadi Derna, a valley that cuts through the city, crashing through buildings and washing people out to sea.
A UN official said Thursday that most casualties could have been avoided.
The World Meteorological Organization said earlier this week that the National Meteorological Center issued warnings 72 hours before the flooding, notifying all governmental authorities by email and through media.
Officials in eastern Libya warned the public about the coming storm, and on Saturday, they ordered residents to evacuate coastal areas, fearing a surge from the sea. But there was no warning about the dams collapsing.
The two dams that collapsed outside Derna were built in the 1970s. A report by a state-run audit agency in 2021 said the dams had not been maintained despite the allocation of more than 2 million euros for that purpose in 2012 and 2013.
As of Thursday, the Libyan Red Crescent said that 11,300 people have been killed, and a further 10,100 are reported missing.
However, local officials suggested that the death toll could be much higher than announced.
The storm also killed around 170 people in other parts of eastern Libya, including the towns of Bayda, Susa, Um Razaz and Marj, the health minister said.