Whirlwind kills one in Hanoi   Big trees near Thong Nhat Park are uprooted by the whirlwind. -- VNA/VNS Photos HA NOI - A strong whirlwind hit the capital city of Ha Noi yesterday afternoon, killing one and injuring three others. The victim was killed at the Quang Trung-Nguyen Du crossroads in central Ha Noi when strong wind uprooted a big tree measuring 75cm in diameter. Meanwhile, a giant advertisement board was whirled across Tran Duy Hung Street, hitting two women on a motorbike and a taxi. The women and the taxi driver were hurt and were brought to hospital for treatment.   A fallen tree crushed a car on Lang Street. In addition, it was reported that at least 13 cars were damaged by fallen trees. Vice Chairman of the Ha Noi People's Committee Nguyen Quoc Hung said on June 14 that more than 1,000 trees across the city were uprooted during the whirlwind, blocking the traffic and damaging many power and telecom lines. Many areas experienced power cuts, including those in Ba Dinh, Tay Ho, Hoan Kiem, Long Bien and Thanh Xuan wards.   A billboard falls down due to strong wind in Xa Dan Street. The wind was accompanied by big rains, measured at 34mm at Van Ho during the 45 minutes shower, while 27.2 mm were recorded in the central Hoan Kiem ward, according to the Ha Noi water drainage company. -- VNS