Wild weather is set to wreak havoc on Kate and Wills’ big day as meteorologists predict an extreme blizzard will hit the UK on 29 April.

Prince William and his fiancée Kate Middleton have reportedly been forced to trade the lavish open top horse-drawn carriage they had planned to ride for the backup 1881 Glass Coach, which will be fitted with a custom-made snow plough to ensure it doesn’t get stuck on the procession route.

In an effort to control the weather Clarence House has employed a team of scientists to construct a fake cloud made from frozen carbon dioxide that will hover over Westminster Abbey and ‘lock in’ moisture to stop it raining. Head scientist at the Institute for the Deliberate Insulation of Temperature (IDIoT), Dr Lars Polfio, said he was confident the measures would be sufficient for the ceremony and the balcony kiss to go ahead.

“We will position a large body of cloud matter directly over Westminster Abbey and the areas immediately surrounding it, along with a smaller one that will cover Buckingham Palace. Kate and William should therefore stay in these two locations for the entire day, as we will not be able to guarantee complete dryness anywhere else in London,” Dr Polfio said in a statement.

In addition, high beam lights will be placed outside each of the Abbey’s stainless glass windows, to emit a natural glow as the bride and groom say their vows.

Watch scientists explain how the cloud works in the video below:

If you hadn’t already figured it out, this was an April Fool. Sorry about that.

Follow Yahoo! Royal Wedding UK on Twitter