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Americans have barely started recovering from the devastation left in the wake of Hurricane Harvey.
But Hurricane Irma could be even worse.
What started typical hurricane near Cape Verde islands has grown into a category five cyclone, as 5.6 million Floridians - or 25 per cent of the state's population - have been asked to evacuate.
Here is why Hurricane Irma looks so dangerous.
Hurricane Irma slams Cuba on way to Florida https://t.co/HvamTqrKCU https://t.co/T8V8dHsSSB — Fox News (@Fox News)
That's larger than Ohio.
Hurricane Harvey was 5.2 and Katrina was 4.9.
They're the things designed to measure earthquakes.
Seismometer recordings from the past 48 hours on Guadeloupe show Cat. 5 #Hurricane #Irma driving closer toward the… https://t.co/hyj4jgqBCU — Dr Stephen Hicks 🇪🇺 (@Dr Stephen Hicks 🇪🇺)
Which would be the fourth time since 1966.
The @NWSNHC @WLTX has upated the wind gusts on Hurricane #Irma up to now 215MPH. https://t.co/p2LilKai5w — Efren Afante (@Efren Afante)
While airplane measurements suggest it can sustain winds at 155mph.
This is at a "life-threatening" strength according to the National Hurricane Centre.
The storm could dump up to 10 inches of rain, cause landslides and flash floods, and generate waves up to 23 feet. https://t.co/aSmc2uHwLJ — The Christian Science Monitor (@The Christian Science Monitor)
And if it stays at Category 5 when it hits Miami, Credit Suisse estimates the cost could be double that.
It has already left other areas devastated.
On the ground the destruction is worse the than the Prime Minister feared. The whole island will have to be rebuilt https://t.co/W6kkQUPSgf — Laura Bicker (@Laura Bicker)
Irma is expected to reach Florida on Sunday.
More: After saying Hurricane Irma was a liberal climate change hoax, Rush Limbaugh just quietly evacuated Florida