Today’s Image of the Day from NASA Earth Observatory features the port city of Derna on the northeastern coast of Libya, where heavy rainfall caused catastrophic flooding that killed thousands of people. “On September 10 and 11, over 100 millimeters (4 inches) of rain fell on Derna. It shows the eroded banks of Wadi Derna, and muddy water off the coast. “Preliminary estimates by the United Nations Satellite Center (UNOSAT) indicate that 3,100 buildings in Derna were damaged by rushing water. Image Credit: NASA Earth ObservatoryLike what you read?