that could come any hour? we will have that story. we begin tonight with the massive evacuation under way. and other preparations in south florida. steve harrigan starts us off from miami s sure is. good evening, steve. good evening, bret. tough choice for people still here in south florida. get on the jam highway and risk running out of gas or stay put here in a home, a home that could be destroyed by the storm. irma s unwelcome debut in the united states expected overnight with the first fits of rain and wind aimed at the florida keys. the weekend track taking it due north along the flat spine of the state. the majority in florida will have major hurricane impacts with deadly storm surge and life-threatening winds. most residents and tourists heeding the call to evacuate. others hunker down in shelters, grateful but anxious. it s scary. it wiped out other towns and