Evacuation orders multiply in Florida

Evacuation orders are multiplying across Florida as local officials try to get the most vulnerable populations to move to safety ahead of Hurricane Irma.  Miami Dade has now made evacuations mandatory for all of its coastal areas, barrier islands and mobile homes. Monroe County's mandatory order stands for the entire Florida Keys. Broward County's order remains voluntary for mobile homes and low-lying areas. Collier County issued a voluntary evacuation order for Marco Island.&