The National Weather Service on Tuesday tweeted the following forecast for South Florida: "This isn't something we usually forecast, but don't be surprised if you see iguanas falling from the trees tonight as lows drop into the 30s and 40s."
No, the tweet wasn't a joke and the National Weather Service's Twitter account wasn't hacked. It turns out cold weather can result in falling iguanas because they're cold-blooded animals; and when the outside temperature gets too low, iguanas either slow down or become completely immobile. That causes them to lose their grips on tree branches, resulting in showers of falling iguanas, according to the NWS.
But don't worry about the little reptiles; once the weather warms up, they do do. "They may fall from trees, but they're not dead," an NWS rep says.