For days, Libyans looked across the Mediterranean to Turkey, Greece and Bulgaria, where a powerful storm had already killed more than a dozen people. But when it reached the North African nation of Libya, disaster grew exponentially. Torrential rains swelled the waters behind two dams until they burst, inundating entire communities. More than 5,000 people are feared dead, and in the coastal city of Derna, entire neighborhoods were carried out to sea, the local authorities said. ThursdaySoldiers in the flood-stricken city of Derna.