In Argentina, at least 14 people were killed and many injured in a powerful storm coupled with heavy winds and rain in the southwestern port city of Bahía Blanca, yesterday. Officials said that the storm caused part of the roof of a sports centre to collapse during a roller skating competition, killing 13 people.<br />''<br />'' According to local authorities, at least 300 people have been evacuated.<br />''<br />''National Weather Institute of Uruguay said that at least two people died in the country, as the storm knocked down trees and tore off roofs early yesterday.<br />''<br />''<br />''<br />''<br />''<br />