Susan Gallagher, who represents the private power firm Ameren in St Louis, Missouri, says her state has been through a lot this winter.

• 暴风雨经过之处，大部分覆盖着冰雪的电缆被大风刮掉，致使数以十万计的人无电可用，而且在这些人中大多数的家里都没有暖气。