Irma is expected to landfall in Florida tomorrow, which at its current trend officials said, is likely to cause devastation across Florida and surrounding areas.
Authorities in Florida have ordered 5.6 million people - a quarter of the state's population - to evacuate, warning that those who do not leave cannot expect rescue services to reach them once Irma hits.
"It is not a question of if Florida is going to be impacted, it is a question of how bad Florida's going to be impacted," said Brock Long, head of Federal Emergency Management Agency.
Florida is also home to thousands of Indian-Americans.
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In addition to thousands of federal employees, several thousand-military personals have been deployed by the Department of Defence to meet any eventuality in the aftermath of Irma hitting the coast of Florida.
"We need the people to listen to their local officials. But when we see evacuations taking place, what we try to do is break down the number that are going to need mass care support, and some of those numbers are well over 100,000 people in shelters for this event," Long said.
Earlier in the day, Trump signed a legislation that provides an additional USD 15.25 billion in emergency appropriations for disaster relief and extends the authorisation of the National Flood Insurance Programme through December 8.
"Additionally, as the damage from Hurricane Irma unfolds, it is especially important that the men and women in the Southeast and our Caribbean territories stand strong and rest assured that this Administration will always put the needs of the American people above partisan politics as usual," White House Press Secretary Sarah Sanders said in a statement.
In his weekly address to the nation, Trump noted that this is a storm of historic destructive potential, and he's asking that everyone in the storm's path to remain vigilant and pay heed all recommendations from government officials and law enforcement.
"Our message to the American people is this: With gratitude for our first responders, and prayers for those in the storm's path, we are behind you 100 per cent," she said.
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