1994年4月25日晚9点38分,一阵强烈的龙卷风掠过了美国德克萨斯州兰开斯特镇的中心地区,摧毁了至少175座房屋,把这一带历史悠久的商业区的一半建筑物夷为平地,使整个街区成了瓦砾堆。 令人吃惊的是,在这么大的风灾中只有4人丧生,这主要归功于设在离此地约100公里远的沃斯堡的“国家气象服务台”的一种新型气象雷达。这种雷达名叫Nexrad,意思是“下一代的气象雷达”。 At 9:38 a.m. on April 25, 1994, an intense tornado swept through the heart of the town of Lancaster, Texas, United States, destroying at least 175 houses and leaving the area with its historic downtown Half of the building was razed to make the entire neighborhood a rubble heap. Surprisingly, only four people were killed in such a big storm, thanks in large part to a new weather radar at the National Weather Service station in Fort Worth, about 100 kilometers away. This kind of radar called Nexrad, meaning “the next generation of weather radar.”