MADINAH, 22 August  — Seven cars parked at an open showroom in the holy city of Madinah were destroyed on Sunday in a powerful sandstorm which caused billboards and iron sheets to fall on the vehicles. A few days ago, 80 sheep were electrocuted by lightning during a three-hour thunderstorm over the city. Meanwhile, a 14-year-old boy drowned in Jizan after he fell in a pond while walking through a flooded farm.