The eastern Libyan city of Derna, the epicenter of the disaster, had a population of around 100,000 before the tragedy. A ferocious stormThe extreme rainfall that hit Libya on Sunday was brought by a system called Storm Daniel. The medicane strengthened as it crossed the unusually warm waters of the Mediterranean before dumping torrential rain on Libya on Sunday. The Derna dam is 75 meters (246 feet) high with a storage capacity of 18 million cubic meters (4.76 billion gallons). The Sebha University paper warned that the dams in Derna had a “high potential for flood risk” and that periodic maintenance is needed to avoid “catastrophic” flooding.

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