27 August 2012
Last updated at 02:28 ET
People in Florida are bracing for the arrival of tropical Storm Isaac, which has begun lashing the US coastline. Louisiana, Mississippi and Alabama, along with Florida, have now all declared a state of emergency.
Residents in the Florida Keys have been preparing to ride out the storm, which was expected to pass over the southernmost point in the United States late on Sunday.
The US Republican Party has delayed its National Convention in the Florida city of Tampa for a day because of the approach of Isaac.
Before hitting the US, Isaac crashed over Haiti, Cuba and the Dominican Republic (pictured).
At least six people are thought to have died when the storm hit Haiti, with heavy flooding in some areas of the country.
People still living in tents and temporary shelters following the devastating earthquake that hit Haiti in 2010 were particularly vulnerable to the elements.
The Cuban government declared a state of alert in eastern Cuba and evacuated hundreds of people from high-risk areas as Isaac swept in.
With winds reaching 65mph (100 km/h), the tropical storm hit Cuba's east coast late on Saturday, but no deaths or injuries were reported.
Isaac has become stronger as it moves toward the Florida Keys and forecasters say it could strengthen into a Category 2 storm.