Nearly two-thirds of homes in Florida are without power
Four storm-related deaths have been reported so far in Florida
The weakening storm is crossing into Georgia
At least 37 people were killed as Irma rolled across the Caribbean
Image source, Getty ImagesPresident Donald Trump has spoken to the governors of Alabama, Georgia, South Carolina and Tennessee as Irma began moving north of the Florida Keys, the White House said.
Mr Trump also issued a disaster declaration for the US territory of Puerto Rico on Sunday and made federal funds available to the US Virgin Islands, which were hit by the powerful Atlantic storm.
After Florida Power and Light tweeted a video of their crews ready to fix the damage caused by the storm, engineers from other companies in Texas and Maryland announced they were travelling to help with restoration efforts.
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Over one million people across the state are currently without power.
A Tampa Bay-area sheriff has warned that firing bullets into the storm could have dangerous effects.
The Pasco sheriff's office tweeted late on Saturday in response to a Facebook event created by a 22-year-old man out of "stress and boredom".
The event appeared to be a joke, but 80,000 people suggested they were "going" or "interested".
The ´óÏó´«Ã½ interviewed .
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Photographs showing a crane that has collapsed onto a high-rise building in Miami have emerged on social media.
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The ´óÏó´«Ã½'s Jessica Lussenhop looked at during hurricane conditions as Irma approached.
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Boats piled up against Tortola's shore by Hurricane Irma
The ´óÏó´«Ã½'s Paul Blake and Laura Bicker report from the British Virgin Islands, where Hurricane Irma's force has destroyed communities and left at least five people dead.
The flight into the island of Tortola should feature sweeping views of lush green hillsides and translucent-blue bays. Today it looks like the victim of a bomb blast.
On approach to the airport on Saturday, boats could be seen piled on top of one another like children's toys. Others laid lop-sided on dry ground or semi-submerged offshore.
At the main international airport, operations have ceased. Small, local aircraft are occasionally allowed to land in order to bring food and water, or to evacuate the critically ill.
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Will Grant
´óÏó´«Ã½ News, Havana
Image source, ReutersWaves crash on a Havana street
Havana is currently a city without power. Electricity is out across the capital after Irma clipped the city on its route away from the Cuban coast and out towards Florida.
Residents have woken from a torrid night of howling winds and lashing rain to find trees felled, electricity posts down and flooding in areas near the sea. Thankfully however, no deaths or injuries have been reported.
The clean-up in the capital will take some time. But it is little in comparison to other towns and villages further along the coast which received the full force of Irma's strength.
Cubans are used to hurricanes and generally know how to respond to them. However few could have been fully prepared for a storm of this magnitude.
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Most of the island has just a few feet of elevation - Key West's highest point is only 18ft (5.5m) above sea level.
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The US National Hurricane Center has confirmed Hurricane Irma's eye is beginning to move away from the Florida Keys in a 10:00 local time (15:00 GMT) update.
Image source, National Hurricane Center´óÏó´«Ã½'s Jane O'Brien is live in Miami, Florida, where emergency services have been suspended as the deadly storm approaches.
Here is some footage taken just after Hurricane Irma reached the Florida Keys on Sunday:
Hurricane Irma hits Florida islands
The storm has officially made landfall at Cudjoe Key in the Lower Florida Keys, according to the National Weather Service.
It could make a second landfall in south-west Florida later today.
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Simon Brewer, who describes himself as a meteorologist and an extreme weather journalist, has tweeted a video of heavy winds in Saddlebunch Keys, a series of islands about seven miles (11km) east of Key West.
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Florida Governor Rick Scott has said he feared the "deadly" storm surge set to strike Florida's west coast.
"I am very concerned about the west coast," Mr Scott said on Fox News Sunday.
He later told ABC News: "This storm surge is just deadly."
The storm surge can be the most deadly part of a hurricane.
Image source, EPAThe Weather Channel's Mike Seidel faces challenging conditions while reporting in Miami
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The ´óÏó´«Ã½'s Barbara Plett Usher, who is in Miami, tweets:
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The National Weather Service has tweeted this graphic as Irma heads up towards the Florida mainland:
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