Floodwater swept the living away, and on Wednesday it was washing bodies back onto the shores of eastern Libya faster than the devastated city of Derna could bury them.
President Joe Biden is among the world leaders to have already pledged support, with many of Libya's neighbors sending teams and humanitarian supplies
Catastrophic damage has been done to the city of Derna in eastern Libya, where entire streets of houses have been washed away
Neighboring Egypt, Algeria and Tunisia, as well as Turkey, Italy and the United Arab Emirates, sent rescue teams and aid.