Flooding has wiped entire towns off the map in Libya, after a powerful storm burst dams and swept away bridges.
More than 2,000 people have been killed and 10,000 are missing.
Poor infrastructure and political instability are hampering aid and rescue efforts.
The city of Derna, home to 100,000 people, has been particularly badly hit, 1,500 people in the city have been killed.
Andrew Thomas from the International Federation of Red Cross and Red Crescent Societies spoke to Corin Dann.
